Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Facility Address Facility City Facility Facility Zip Facility Phone Permit Type Class. SIC State Code 3126122 0079146 2/28/2025 1840, LLC 1000 MAIN ST DUBUQUE IA 52001-- (563)557-8400 INDUSTRIAL MINOR 8111 8466785 0084166 7/31/2023 360 Cattle Company, Inc. 3271 360th Street SIOUX CENTER IA 51250-- (712)722-0635 AGRICULTURAL MINOR 0211 1556245 0080519 8/31/2021 A to Z Feeders 56393 Highland Road ATLANTIC IA 50022-- (712)243-4515 AGRICULTURAL MINOR 0211 3126114 0063860 5/31/2022 A.Y. MCDONALD MFG. CO. 4800 CHAVENELLE ROAD DUBUQUE IA 52002- (563)583-7311 INDUSTRIAL MINOR 3494 6600110 0080896 10/31/2022 ABSOLUTE ENERGY 1372 STATELINE ROAD SAINT ANSGAR IA 50472-- INDUSTRIAL MINOR 2869 4201001 0035297 6/30/2025 ACKLEY CITY OF STP 208 STATE STREET ACKLEY IA 50601- (641)847-3332 MUNICIPAL MINOR 4952 0105001 0035416 2/9/2008 ADAIR CITY OF STP OFF OF AUDUBON ST., EAST SIDE OF TOWN ADAIR IA 50002-- (641)742-3751 MUNICIPAL MINOR 4952 3900501 0067156 9/30/2022 ADAIR-CASEY COMMUNITY SCHOOL DISTRICT 3384 Indigo Ave. ADAIR IA 50002- (515)742-3661 SEMI-PUBLIC MINOR 8211 2503001 0041921 9/30/2019 ADEL CITY OF STP 600 SOUTH 4TH STREET ADEL IA 50003- (515)993-4525 MUNICIPAL MAJOR 4952 2326120 0082279 3/31/2025 ADM BIOPROCESSING 410 18TH AVENUE SOUTH CLINTON IA 52732-- (563)241-4533 INDUSTRIAL MINOR 2048 2326119 0080543 7/31/2024 ADM CLINTON COGENERATION PLANT 1800 S. 5TH STREET CLINTON IA 52732-- INDUSTRIAL MINOR 4911 0790123 0078484 1/31/2024 ADVANCED HEAT TREAT CORPORATION 2839 BURTON AVE WATERLOO IA 50703-- (319)232-5221 INDUSTRIAL MINOR 3398 0790119 0075451 7/31/2024 ADVANCED HEAT TREAT CORPORATION - MIDPORT 2825 MIDPORT BLVD WATERLOO IA 50703-- (319)232-5221 INDUSTRIAL MINOR 3398 8803001 0041831 9/30/2022 AFTON CITY OF STP 2/3 MILE SOUTH OF HIGHWAY 169 & PIERCE ST. AFTON IA 50830- (641)347-5224 MUNICIPAL MINOR 4952 8803002 0052182 7/31/2020 AFTON CITY PARK SPLASHPAD NW INTERSECTION OF WEBSTER AND KANSAS STREET AFTON IA 50830-- MUNICIPAL MINOR 7999 4000111 0053034 2/28/2026 AG PARTNERS, LLC 3364 VAIL AVE ELLSWORTH IA 50075-- (515)836-2126 INDUSTRIAL MINOR 2048 1457102 0064262 2/28/2022 AG PROCESSING INC a COOPERATIVE 1000 300TH ST MANNING IA 51455-- (712)653-3985 INDUSTRIAL MINOR 2075 9926101 0059901 1/31/2017 AG PROCESSING INC. 500 NORTH COMMERCIAL AVENUE EAGLE GROVE IA 50533-- (515)448-4711 INDUSTRIAL MINOR 2075 9926102 0074128 5/26/2010 AG PROCESSING INC. - ENERGY CENTER 500 NORTH COMMERCIAL AVENUE EAGLE GROVE IA 50533-- (515)448-4711 INDUSTRIAL MINOR 2075 9700105 0058815 5/31/2022 AG PROCESSING INC. - SERGEANT BLUFF 2735 Port Neal Circle SERGEANT BLUFF IA 51054-- (712)943-7267 INDUSTRIAL MINOR 2075 7170100 0063771 3/30/2005 AG PROCESSING INC. - SHELDON 804 2nd Ave SHELDON IA 51201-- (712)324-2531 INDUSTRIAL MINOR 2075 5500113 0081116 7/31/2018 AG PROCESSING, INC. - ALGONA 2108 140TH AVE ALGONA IA 50511-- (515)395-3910 INDUSTRIAL MINOR 2869 9003001 0057754 8/26/2006 AGENCY CITY OF STP EAST OF TOWN OFF 85TH STREET AGENCY IA 52530--0218 (515)937-5215 MUNICIPAL MINOR 4952 0375102 0077135 9/1/2021 AGRI STAR MEAT AND POULTRY LLC 220 WEST STREET POSTVILLE IA 52162- (563)864-7811 INDUSTRIAL MINOR 2011 8100100 0004006 6/30/2023 AGRIUM U.S. INC. 1887 Highway 71 EARLY IA 50535-- (712)273-5696 INDUSTRIAL MINOR 4789 8400120 0081621 2/28/2022 AGROPUR INC. 332 Division Street HULL IA 51239-- (605)880-7193 INDUSTRIAL MINOR 2022 9203001 0069183 5/31/2022 AINSWORTH CITY OF STP CORNER OF 1ST STREET & 250TH STREET AINSWORTH IA 52201-- (319)657-3761 MUNICIPAL MINOR 4952 9200201 0074080 9/20/2006 AINSWORTH FOUR CORNERS 2512 HIGHWAY 218 AINSWORTH IA 52201- (319)657-3399 SEMI-PUBLIC MINOR 5541 6800113 0065692 4/30/2022 AJINOMOTO ANIMAL NUTRITION NORTH AMERICA, INC. 1116 HWY 137 EDDYVILLE IA 52553-- (641)969-3311 INDUSTRIAL MINOR 2834 6800114 0072389 4/30/2022 AJINOMOTO NORTH AMERICA, INC. 1 Ajinomoto Drive EDDYVILLE IA 52553-- (641)969-4561 INDUSTRIAL MINOR 2869 7509001 0035211 5/31/2022 AKRON CITY OF STP ENTER OFF COUNTRY CLUB LN WEST OF HWY 3 INTERSECT AKRON IA 51001-- (712)568-2650 MUNICIPAL MINOR 4952 1103001 0034312 3/31/2025 ALBERT CITY, CITY OF STP 2267 510TH STREET ALBERT CITY IA 50510- (712)843-5613 MUNICIPAL MINOR 4952 8466409 0083224 3/31/2026 Albert Rens Feedlot 2661 480th Street IRETON IA 51027-- (712)278-2492 AGRICULTURAL MINOR 0211 6803001 0036871 4/30/2026 ALBIA CITY OF STP (NORTH) APPROX 0.3 MILES W OF HWY 137 & 664TH AVE INTERSECT ALBIA IA 52531- (515)932-2149 MUNICIPAL SIGNIFICANT MINOR 4952 6803003 0036889 4/30/2026 ALBIA CITY OF STP (WEST) APPROX 0.2 MILES SW OF 196TH ST & WASHINGTON AVE W INTERSECT ALBIA IA 52531- (641)932-2129 MUNICIPAL MINOR 4952 6403001 0034321 11/30/2024 ALBION CITY OF STP 1/4 MILE EAST OF E. JOHNSON ST. AND S. EAST ST. ALBION IA 50005- (515)488-2244 MUNICIPAL MINOR 4952 3100401 0075621 5/31/2025 ALBRECHT ACRES CAMPGROUND-STP 14837 SHERRILL ROAD SHERRILL IA 52073--0050 (563)552-1771 SEMI-PUBLIC MINOR 7032 5704001 0024431 1/31/2025 ALBURNETT CITY OF STP E OF N ALBURNETT RD & OLD QUASS RD INTERSECTION ALBURNETT IA 52202- (319)842-2565 MUNICIPAL MINOR 4952 4213001 0034339 2/28/2025 ALDEN CITY OF STP INTERSECTION OF 135TH STREET & G AVENUE ALDEN IA 50006--0026 (515)859-3344 MUNICIPAL MINOR 4952 5502001 0022055 6/30/2022 ALGONA CITY OF STP NEAR S WEST ST AND W COLLEGE ST INTERSECT ALGONA IA 50511- (515)295-2411 MUNICIPAL MAJOR 4952 0300901 0065790 4/30/2026 ALLAMAKEE COUNTY PUBLIC SAFETY CENTER STP 877 HIGHWAY 9 NORTH WAUKON IA 52172--7757 (563)568-4266 SEMI-PUBLIC MINOR 9221 0790118 0072419 4/30/2024 ALLEN MEMORIAL HOSPITAL 1825 LOGAN AVE WATERLOO IA 50703- (319)235-3895 INDUSTRIAL MINOR 8062 9303003 0054054 8/31/2026 ALLERTON CITY OF STP (NORTH) APPROXIMATELY 0.60 MILES NE J46 AND N26 INTERSECT ALLERTON IA 50008--0176 (641)873-4459 MUNICIPAL MINOR 4952 9303002 0054046 8/31/2026 ALLERTON CITY OF STP (SOUTH) 122 NORTH CENTRAL AVENUE ALLERTON IA 50008-- (515)873-4623 MUNICIPAL MINOR 4952 3126120 0077151 10/31/2024 ALLIANT ENERGY DATA CENTER 1031 IOWA STREET DUBUQUE IA 52001-- INDUSTRIAL MINOR 8741 1203001 0042731 1/31/2025 ALLISON CITY OF STP 1/2 MI S. OF HWY 3 ON HWY 14 THEN EAST 1/4 MI ON CEMETERY RD ALLISON IA 50602- (319)267-2166 MUNICIPAL MINOR 4952 1108001 0024449 6/30/2025 ALTA CITY OF STP 0.2 MILES SW OF THE INTERSECTION OF M31/W HWY & W. 9TH ST. ALTA IA 51002- (712)200-2105 MUNICIPAL MINOR 4952 1903001 0030686 8/31/2024 ALTA VISTA CITY OF STP 1/2 MILE NE OF 120TH ST & GILMORE AVE INTERSECTION ALTA VISTA IA 50603-- (641)364-2975 MUNICIPAL MINOR 4952 8403001 0028932 12/31/2023 ALTON CITY OF STP KENNEDY AVE AND 440TH STREET, SOUTH OF TOWN ALTON IA 51003- (712)756-4314 MUNICIPAL MINOR 4952 7707002 0078603 7/31/2024 ALTOONA, CITY OF MS4 407 8TH ST. SE ALTOONA IA 50009-- (515)967-5136 STORMWATER MINOR 4952 6003001 0059722 11/30/2019 ALVORD CITY OF STP WEST OF TOWN ON ELWOOD AVE ALVORD IA 51230- (712)473-2246 MUNICIPAL MINOR 4952 4856996 0077500 9/30/2025 Amana Farms, Inc. 2593 F15 Blvd AMANA IA 52203-- (319)622-7500 AGRICULTURAL MINOR 0211 4802901 0059161 7/31/2021 AMANA SANITARY DISTRICT EAST OF AMANA AT 220 TRAIL AND 49TH AVE AMANA IA 52203- (319)622-3719 MUNICIPAL MINOR 4952 5640104 0033600 6/30/2021 AMEREN UE KEOKUK PLANT 523 N Water Street KEOKUK IA 52632-- (319)524-9660 INDUSTRIAL MINOR 4911 4700109 0082121 12/29/2013 AMERICAN NATURAL PROCESSORS, INC. 6081 159TH STREET GALVA IA 51020-- INDUSTRIAL MINOR 2869 8503001 0035955 8/31/2015 AMES WATER POLLUTION CONTROL FACILITY 76797 280TH STREET AMES IA 50010- (515)239-5150 MUNICIPAL MAJOR 4952 8503003 0078204 3/31/2024 AMES, CITY OF MS4 515 CLARK AMES IA 50010-- (515)239-5105 STORMWATER MINOR 4952 9433112 0071366 8/31/2022 AML RIVERSIDE 141 EAST RIVERSIDE DRIVE FORT DODGE IA 50501- (515)302-2320 INDUSTRIAL MINOR 2834 1300103 0073512 10/20/2024 AMPC, INC. dba ESSENTIA PROTEINS SOLUTIONS - LAOP HIGHWAY 20 & MAIN STREET, P.O. BOX 158 LYTTON IA 50561-- (712)466-2256 OPERATION MINOR 2011 8300100 0073920 7/10/2024 AMPC, INC. dba ESSENTIA PROTEINS SOLUTIONS - LAOP 1347 Highway 44 HARLAN IA 51537-- (712)755-2370 OPERATION MINOR 2077 5307001 0025895 10/31/2025 ANAMOSA CITY OF STP 1205 WALWORTH AVENUE ANAMOSA IA 52205- (319)462-6055 MUNICIPAL MAJOR 4952 2307001 0021091 11/30/2023 ANDOVER CITY OF STP 140TH ST. 1/4 MILE WEST OF 432ND AVE. ANDOVER IA 52701- (319)242-9026 MUNICIPAL MINOR 4952 4903001 0057975 8/31/2016 ANDREW CITY OF STP 0.3 MILES W OF 150TH ST & JOHNSON ST INTERSECTION ANDREW IA 52030- (319)652-4881 MUNICIPAL MINOR 4952 1503001 0024520 9/30/2021 ANITA CITY OF STP SE CORNER OF WHITE POLE RD AND 725TH STREET INTERSECT ANITA IA 50020- (712)762-3746 MUNICIPAL MINOR 4952 7709000 0074489 2/28/2026 ANKENY AQUIFER STORAGE AND RECOVERY WELL 321 SW ELM STREET ANKENY IA 50023-- (515)963-3524 MUNICIPAL-WT MINOR 4941 7709008 0078611 8/31/2024 ANKENY, CITY OF MS4 410 W. FIRST ST. ANKENY IA 50023-- (515)965-6400 STORMWATER MINOR 4952 9704001 0042854 4/20/2014 ANTHON CITY OF STP 1/5 MILE NORTH OF 220TH ST AND MASON AVE. ANTHON IA 51004-- (712)373-5218 MUNICIPAL MINOR 4952 7500114 0080942 1/31/2022 ANTHONY TRUCKING, INC. 21080 LAKE AVENUE LE MARS IA 51031-- (712)546-3216 OPERATION MINOR 7542 1207001 0035050 12/31/2023 APLINGTON CITY OF STP 810 4TH STREET APLINGTON IA 50604- (319)347-2947 MUNICIPAL MINOR 4952 1403001 0031208 12/31/2022 ARCADIA CITY OF STP HIGHWAY 30 & CONCORD AVE ARCADIA IA 51430- (712)689-2559 MUNICIPAL MINOR 4952 7103001 0082422 11/30/2021 ARCHER CITY OF STP 203 SANFORD STREET (EAST SIDE OF BLDG) ARCHER IA 51231-- (712)262-8847 MUNICIPAL MINOR 4952 7727135 0072958 5/31/2026 ARCHER DANIELS MIDLAND COMPANY 1935 EAST EUCLID AVENUE DES MOINES IA 50316- (515)263-3252 INDUSTRIAL MINOR 2075 2326101 0003620 3/31/2021 ARCHER DANIELS MIDLAND CORN PROCESSING 1251 BEAVER CHANNEL PKWY CLINTON IA 52732--5935 (563)242-1121 INDUSTRIAL MAJOR 2046 8278100 0003395 9/30/2023 ARCONIC DAVENPORT LLC 4879 STATE STREET BETTENDORF IA 52722--8030 (563)359-2287 INDUSTRIAL MAJOR 3353 3126115 0069540 12/31/2022 ARCTIC GLACIER PREMIUM ICE 19 NIGHTENGALE LANE DUBUQUE IA 52003- (563)556-7626 INDUSTRIAL MINOR 2097 8503105 0072061 4/30/2025 ARCTIC GLACIER U.S.A., INC. 2101 PULLMAN ST AMES IA 50010-- (515)232-6123 INDUSTRIAL MINOR 2097 5603001 0082406 10/31/2020 ARGYLE, CITY OF STP SOUTH OF TOWN ON WEST SIDE OF BNSF RAILROAD ARGYLE IA 52619-- (641)919-3012 OPERATION MINOR 4952 8809001 0074462 4/30/2016 ARISPE, CITY OF STP 1500 FT SOUTH OF DUTCHER & NUTHATCH INTERSECT ARISPE IA 50801- (641)782-5744 MUNICIPAL MINOR 4952 3307001 0027383 11/30/2023 ARLINGTON CITY OF STP 1/4 MILE SOUTH OF DOGWOOD RD AND 90TH ST INTERSECT ARLINGTON IA 50606-- (319)633-2715 MUNICIPAL MINOR 4952 3203001 0028517 5/31/2022 ARMSTRONG CITY OF STP 519 6TH STREET ARMSTRONG IA 50514--0229 (712)864-3535 MUNICIPAL MINOR 4952 7727012 0052975 4/30/2024 ARMY POST ROAD AQUIFER STORAGE & RECOVERY FACILITY 5470 WILLOW CREEK AVE. DES MOINES IA 50321--1190 MUNICIPAL-WT MINOR 4941 6056506 0079502 12/31/2025 ARNEVA CATTLE, LLC 2663 BUCHANAN AVENUE INWOOD IA 51240-- AGRICULTURAL MINOR 0211 3030102 0053081 2/24/2026 ARNOLDS PARK 2019 PROMENADE BEAUTIFICATION PROJECT 37 LAKE STREET ARNOLDS PARK IA 51331-- STORMWATER MINOR 7996 4703001 0025887 6/30/2025 ARTHUR CITY OF STP HIGHWAY 175 ON THE EAST EDGE OF TOWN ARTHUR IA 51431-- (712)367-2351 MUNICIPAL MINOR 4952 3102001 0069922 4/30/2025 ASBURY CITY OF STP ON WILLOW WOOD DR., NORTH SIDE OF TOWN ASBURY IA 52002--2522 (563)556-7106 MUNICIPAL MINOR 4952 3102002 0078905 1/31/2025 ASBURY, CITY OF MS4 5290 GRAND MEADOW DR ASBURY IA 52002-- (563)556-7106 STORMWATER MINOR 4952 7209001 0024457 3/31/2023 ASHTON CITY OF STP NE CORNER OF 1ST ST & NETTLE AVE INTERSECT ASHTON IA 51232-- (712)724-6520 MUNICIPAL MINOR 4952 7165101 0081965 5/31/2023 ASSOCIATED MILK PRODUCERS, INC. - SANBORN 101 WEST STREET SANBORN IA 51248-- (712)729-3255 INDUSTRIAL MINOR 2022 7165102 0053204 2/10/2025 ASSOCIATED MILK PRODUCERS, INC. LAOP 101 WEST STREET SANBORN IA 51248-- OPERATION MINOR 2022

1 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Facility Address Facility City Facility Facility Zip Facility Phone Permit Type Class. SIC State Code 7009001 0070998 4/18/2006 ATALISSA CITY OF STP OFF OF PENN AVE., SE OF TOWN ATALISSA IA 52720- (563)649-3384 MUNICIPAL MINOR 4952 0603001 0020796 1/31/2024 ATKINS CITY OF STP Entrance 1750ft E from A Ave & Railroad St Intersection ATKINS IA 52206-- (319)446-7870 MUNICIPAL MINOR 4952 1509001 0029025 10/31/2024 ATLANTIC CITY OF STP 309 SUNNYSIDE LN. ATLANTIC IA 50022- (712)243-5281 MUNICIPAL MAJOR 4952 8104001 0057029 11/30/2021 AUBURN CITY OF STP 1/3 MILE NORTHEAST OF XAVIER AVE. AND 365TH ST. AUBURN IA 51433-- (712)688-2264 MUNICIPAL MINOR 4952 0505001 0035203 1/31/2020 AUDUBON CITY OF STP CITY HALL - CITY CLERK AUDUBON IA 50025- (712)563-2152 MUNICIPAL MINOR 4952 3126501 0081809 2/29/2020 AUDUBON ELEMENTARY SCHOOL 605 LINCOLN AVENUE DUBUQUE IA 52001--3411 INDUSTRIAL MINOR 8211 6258708 0080136 5/31/2022 Augustine & Sons, Inc. 3057 190TH STREET ROSE HILL IA 52586-- (641)632-8354 AGRICULTURAL MINOR 0211 1803001 0028908 7/31/2026 AURELIA CITY OF STP 1/2 MILE SOUTH OF 560TH ST ON W AVENUE AURELIA IA 51005-- (712)434-2025 MUNICIPAL MINOR 4952 1003001 0059412 12/31/2022 AURORA CITY OF STP 0.5 MI W SLATER AVE. 0.4 OF A MILE S OF ALICE ST. AURORA IA 50607--0117 (319)634-3363 MUNICIPAL MINOR 4952 6061430 0084204 5/31/2024 AVACH HOLDINGS LLC 1447 140th Street LARCHWOOD IA 51241-- (712)477-2811 AGRICULTURAL MINOR 0211 0398100 0003751 11/30/2024 AVEKA NUTRA PROCESSING 830 ALLAMAKEE ST. WAUKON IA 52172-- (563)568-2094 INDUSTRIAL MINOR 2833 6809001 0074713 1/31/2025 AVERY, CITY OF STP-(RATHBUN RWA) 1500 FEET NE OF MILLER ST AND GRAND ST INTERSECTION ARCADIA IA 52531-- (641)647-2416 MUNICIPAL MINOR 4952 7803001 0030708 5/31/2025 AVOCA CITY OF STP SW OF TOWN OFF 440TH STREET AVOCA IA 51521- (712)343-2424 MUNICIPAL MINOR 4952 5625101 0003514 8/31/2024 AXALTA COATING SYSTEMS, LLC - FORT MADISON PLANT 803 35TH ST FORT MADISON IA 52627--2011 (319)376-5312 INDUSTRIAL MINOR 2851 7403001 0079677 7/31/2021 AYRSHIRE, CITY OF STP 0.5 MI SOUTH & 0.25 MI EAST OF WASHINGTON & LOGAN ST AYRSHIRE IA 50515-- (712)426-3510 MUNICIPAL MINOR 4952 4760840 0079049 10/31/2024 B&D Dairy 5211 130th St HOLSTEIN IA 51025--8002 (248)343-4919 AGRICULTURAL MINOR 0241 9405001 0029041 9/30/2022 BADGER CITY OF STP 0.1 MILES N. OF PARAGON AVE AND 130TH ST INTERSEC BADGER IA 50516- (515)545-4514 MUNICIPAL MINOR 4952 4907001 0063398 5/31/2026 BALDWIN-MONMOUTH WW TREATMENT AGENCY 0.2 MILES NW OF THE HWY 64 AND 33RD AVE INTERSECTION BALDWIN IA 52207- (563)673-3111 MUNICIPAL MINOR 4952 3103001 0076911 9/30/2024 BALLTOWN, CITY OF-NORTH WWTF 0.14 MILES NW OF INTERSECT OF HORSESHOE RD & BALLTOWN RD. SHERRILL IA 52073- (319)552-2582 MUNICIPAL MINOR 4952 3103002 0076929 9/30/2024 BALLTOWN, CITY OF-SOUTH WWTF 405 HORSESHOE RD SHERRILL IA 52073- (319)552-2582 MUNICIPAL MINOR 4952 5507002 0057762 2/28/2025 BANCROFT CITY OF STP 1/2 MILE N OF SENECA AVE ON HWY 69 THEN 1/2 MILE E ON GRAVEL LN. BANCROFT IA 50517- (515)885-2382 MUNICIPAL MINOR 4952 3109001 0071731 9/20/2009 BANKSTON CITY OF STP GUN CLUB RD BANKSTON IA 52045- (563)744-3085 MUNICIPAL MINOR 4952 8456228 0077721 6/30/2022 Bar K Cattle LLC - K52 3940 HICKORY AVENUE SIOUX CENTER IA 51250-- (712)722-4752 AGRICULTURAL MINOR 0211 8457946 0059188 9/30/2024 Bar K Cattle, LLC - Carmel 3579 GRANT AVE SIOUX CENTER IA 51250-- (712)722-4802 AGRICULTURAL MINOR 0211 8456567 0077518 1/31/2025 Bar K Cattle, LLC - Inwood 2721 Beech Avenue INWOOD IA 51250-- (712)722-3332 AGRICULTURAL MINOR 0211 7905001 0081329 1/31/2024 BARNES CITY, CITY OF STP 0.76 MILES NE OF CHERRY ST & MARKET ST INTERSECT BARNES CITY IA 50027-- MUNICIPAL MINOR 4952 9408001 0041246 1/31/2025 BARNUM CITY OF STP 0.2 MILES SW OF HWY 7 & EASTER AVE INTERSECTION BARNUM IA 50518- (515)542-3290 MUNICIPAL MINOR 4952 4356275 0077526 3/31/2023 Barry Farms 2154 REDWOOD AVE WOODBINE IA 51579-- (712)592-2523 AGRICULTURAL MINOR 0211 5107001 0061778 1/31/2021 BATAVIA CITY OF STP OFF 218TH WAY, EAST OF TOWN BATAVIA IA 52533- (641)662-2313 MUNICIPAL MINOR 4952 4709001 0027855 2/28/2026 BATTLE CREEK CITY OF STP 1/3 MILE SOUTH OF TOWN BATTLE CREEK IA 51006-- (712)365-4646 MUNICIPAL MINOR 4952 5003001 0023353 1/31/2022 BAXTER CITY OF STP 6557 HWY F-17 W BAXTER IA 50028-- (641)227-3120 MUNICIPAL MINOR 4952 3907001 0061468 10/31/2021 BAYARD CITY OF STP 1116 JUSTICE ROAD BAYARD IA 50029- (712)651-2484 MUNICIPAL MINOR 4952 7000102 0000205 6/30/2022 BAYER CROPSCIENCE LP 2500 WIGGINS ROAD MUSCATINE IA 52761-- (563)262-5602 INDUSTRIAL MAJOR 2879 4800105 0052268 4/30/2025 BAYER PRODUCTION SUPPLY LLC 2396 U AVENUE WILLIAMSBURG IA 52361-- (319)668-1100 SEMI-PUBLIC MINOR 0762 6203001 0035424 3/31/2024 BEACON CITY OF STP SOUTH OF TOWN OFF WILLIAMS STREET BEACON IA 52534- MUNICIPAL MINOR 4952 3803001 0058734 6/30/2016 BEAMAN CITY OF STP 0.1 MILE WEST OF TOWN OFF CENTER STREET BEAMAN IA 50609- (641)751-1115 MUNICIPAL MINOR 4952 8709001 0026018 12/31/2021 BEDFORD CITY OF STP 2709 LINWOOD AVE BEDFORD IA 50833- (712)523-2545 MUNICIPAL MINOR 4952 6057418 0080497 11/30/2022 Beef & Bacon Drive, Inc. 2277 Coolidge Ave. INWOOD IA 51240-- (712)753-2345 AGRICULTURAL MINOR 0211 7556281 0080411 6/30/2022 Beitelspacher Land and Cattle, LLC (Formerly Beitelspacher Bros.) 11874 Juniper Ave. LE MARS IA 51031-- (712)562-6152 AGRICULTURAL MINOR 0211 8465835 0081761 5/31/2024 Bell Lake Cattle Company 3511 370th Street ORANGE CITY IA 51041-- (712)722-4249 AGRICULTURAL MINOR 0211 0610001 0065404 12/31/2024 BELLE PLAINE CITY OF STP 7874 11TH AVENUE BELLE PLAINE IA 52208-- (319)444-3251 MUNICIPAL MINOR 4952 4910001 0029009 5/31/2023 BELLEVUE CITY OF STP APPROX 1/2 MILE NORTH OF HWY 52 AND CO RD Z15 INTERSECT BELLEVUE IA 52031- (319)872-4329 MUNICIPAL MINOR 4952 9905001 0041777 9/30/2021 BELMOND CITY OF STP 523 2ND AVE SE BELMOND IA 50421- (641)444-3973 MUNICIPAL MINOR 4952 5400401 0077224 2/17/2008 BELVA DEER PARK 19366 242ND AVENUE SIGOURNEY IA 52591-- (641)622-3757 SEMI-PUBLIC MINOR 7999 2300111 0081345 4/21/2013 BENEFICIAL TECHNOLOGIES, LLC 3715 137TH STREET GOOSE LAKE IA 52750-- INDUSTRIAL MINOR 4953 1603001 0021971 7/31/2025 BENNETT CITY OF STP MAIN ST & 1ST ST BENNETT IA 52721- (563)890-2361 MUNICIPAL MINOR 4952 3113001 0076856 5/31/2024 BERNARD, CITY OF-STP HIGGINSPORT RD. 1/4 MILE WEST OF BERNARD RD. BERNARD IA 52032--0066 (563)879-3300 MUNICIPAL MINOR 4952 4000702 0076864 1/31/2023 BEST WESTERN NORSEMAN INN 3086 220TH ST WILLIAMS IA 50271- (515)854-2281 SEMI-PUBLIC MINOR 7011 2863481 0079219 12/31/2025 Beswick Farms 2176 150TH STREET GREELEY IA 52050-- (563)920-6214 AGRICULTURAL MINOR 0211 8209000 0078191 1/31/2024 BETTENDORF, CITY OF MS4 4403 DEVILS GLEN ROAD BETTENDORF IA 52722--4937 (563)344-4055 STORMWATER MINOR 4952 9110001 0081418 5/31/2026 BEVINGTON CITY OF STP 202 #2 LUCY ST. BEVINGTON IA 50033-- (515)962-1200 MUNICIPAL MINOR 4952 5200403 0069094 10/31/2022 BEYONDER GETAWAY AT SLEEPY HOLLOW 3340 BLACKHAWK AVE NW OXFORD IA 52322- (319)628-4900 SEMI-PUBLIC MINOR 7032 2900112 0078123 1/31/2025 BIG RIVER RESOURCES WEST BURLINGTON, LLC 15210 103RD ST WEST BURLINGTON IA 52655-- (319)394-3825 INDUSTRIAL MINOR 2869 2800906 0081302 10/31/2025 BIG RIVER UNITED ENERGY, LLC 3294 VINE ROAD DYERSVILLE IA 52040-- (563)875-5520 INDUSTRIAL MINOR 2869 1100109 0081256 8/31/2023 BINDER LIVESTOCK TRAILER WASHOUT - LAOP 4971 HWY 71 REMBRANDT IA 50576-- (712)260-0693 OPERATION MINOR 7542 8909001 0023426 7/27/2002 BIRMINGHAM CITY OF STP OFF 115TH ST., NE CORNER OF TOWN BIRMINGHAM IA 52535- (319)498-4296 MUNICIPAL MINOR 4952 8600102 0078158 10/31/2023 BITUMINOUS MATERIALS & SUPPLY 3380 L AVE TAMA IA 52339-- (641)484-2494 STORMWATER MINOR 2951 7727134 0073172 1/31/2023 BITUMINOUS MATERIALS AND SUPPLY, LP 900 SE RACCOON ST DES MOINES IA 50309- (515)288-1076 STORMWATER MINOR 2951 4003001 0034347 4/30/2025 BLAIRSBURG CITY OF STP 0.4 MILES E OF US HWY 69 & 220TH ST INTERSECT. BLAIRSBURG IA 50034- (515)325-6224 MUNICIPAL MINOR 4952 0607001 0030660 11/30/2021 BLAIRSTOWN CITY OF STP OFF OF PROSPECT STREET NE, ON NE CORNER OF TOWN BLAIRSTOWN IA 52209--0270 (319)454-6931 MUNICIPAL MINOR 4952 6827001 0028215 9/30/2019 BLAKESBURG CITY OF STP WEST OF INTERSECTION OF WILSON ST & LAGOON ROAD BLAKESBURG IA 52536- (515)673-4436 MUNICIPAL MINOR 4952 6709001 0042889 12/31/2016 BLENCOE CITY OF STP 0.7 MILES EAST OF MAIN ST & IOWA ST INTERSECT BLENCOE IA 51523-- (712)452-2005 MUNICIPAL MINOR 4952 8714001 0076023 2/28/2015 BLOCKTON CITY OF (SOUTHERN IA RURAL WATER ASSN.) SOUTH OF 312TH STREET 2 MILES SW OF TOWN BLOCKTON IA 50836-- (515)782-5744 MUNICIPAL MINOR 4952 2613001 0047929 7/31/2021 BLOOMFIELD CITY OF STP (MAIN) CITY CLERK, CITY HALL BLOOMFIELD IA 52537- (641)664-2260 MUNICIPAL MINOR 4952 8215001 0028975 8/31/2020 BLUE GRASS CITY OF STP BEYOND EAST END OF LAMPHERE DRIVE BLUE GRASS IA 52726- (563)381-4700 MUNICIPAL MINOR 4952 2985103 0077046 1/31/2018 BNSF RAILWAY COMPANY 1801 N. WEST BURLINGTON AVE BURLINGTON IA 52601-- INDUSTRIAL MINOR 4011 4609001 0047805 4/30/2024 BODE CITY OF STP EAST OF TOWN AT END OF 1ST STREET BODE IA 50519- (515)379-1486 MUNICIPAL MINOR 4952 8463263 0079332 3/31/2026 Boerdery Inc. 4280 JACKSON AVE ORANGE CITY IA 51041-- (712)737-4960 AGRICULTURAL MINOR 0211 8914001 0050628 7/31/2022 BONAPARTE CITY OF STP 1/4 MILE EAST OF TOWN, NORTH SIDE OF RIVER BONAPARTE IA 52620- (319)592-3400 MUNICIPAL MINOR 4952 7717002 0078786 9/30/2024 BONDURANT, CITY OF MS4 200 2ND ST NE BONDURANT IA 50035--0037 (515)967-2418 STORMWATER MINOR 4952 0819001 0058076 7/31/2024 BOONE CITY OF STP 1721 MCHOSE DRIVE BOONE IA 50036-- (515)432-4433 MUNICIPAL MAJOR 4952 0819000 0079421 2/28/2025 Boone, City of WTP 1190 E 26TH BOONE IA 50036--0550 MUNICIPAL-WT MINOR 4941 0825001 0058491 7/31/2017 BOXHOLM CITY OF STP 1/2 MI S ON HWY 169 & 3/4 MI E ON E18 BOXHOLM IA 50040- (515)846-6414 MUNICIPAL MINOR 4952 8409001 0042838 1/31/2025 BOYDEN CITY OF STP 1/2 MILE SOUTH OF 320TH ST ON JEFFERSON AVE, THEN 1/4 MILE WEST. BOYDEN IA 51234- (712)725-2216 MUNICIPAL MINOR 4952 2424101 0072915 12/31/2024 BOYER VALLEY COMPANY - LAOP 2268 Q AVENUE ARION IA 51520- (712)263-9301 OPERATION MINOR 2011 3100100 0001210 9/30/2023 BP PRODUCTS DUBUQUE TERMINAL 15393 OLD HIGHWAY ROAD PEOSTA IA 52068-- (563)556-4001 INDUSTRIAL MINOR 5171 8464000 0083119 2/28/2026 Brad Pollema Feedlot 2224 290th Street ROCK VALLEY IA 51247-- (712)476-2999 AGRICULTURAL MINOR 0211 7324001 0057151 6/30/2025 BRADDYVILLE CITY OF STP .15 MILES NORTH OF E MAIN ST & FIRST ST INTERSECTION BRADDYVILLE IA 51631-- (712)542-4414 MUNICIPAL MINOR 4952 1011001 0028185 6/30/2019 BRANDON, CITY OF STP 100 BRANARD STREET BRANDON IA 52210--0263 (319)474-2335 MUNICIPAL MINOR 4952 4166181 0082465 9/30/2024 Branstad Farms 3018 HWY 69 FOREST CITY IA 50436-- (641)590-2710 AGRICULTURAL MINOR 0211 0510001 0057100 7/31/2026 BRAYTON CITY OF STP OFF HWY 71 SOUTH OF TOWN BRAYTON IA 50042--0104 (712)549-7703 MUNICIPAL MINOR 4952 1409002 0056103 6/30/2023 BREDA CITY OF STP NW CORNER OF 110TH ST. & GRANITE AVE. BREDA IA 51436- (712)673-2660 MUNICIPAL MINOR 4952 7158774 0083941 7/31/2025 Brent Rieck Feedlot 3141 Van Buren Ave. HARTLEY IA 51346-- (712)295-6011 AGRICULTURAL MINOR 0211 7758687 0038911 1/31/2023 Brenton Brothers, Inc 21580 XAVIER AVE GRIMES IA 50111-- (515)992-3403 AGRICULTURAL MINOR 0211 9756538 0080187 1/31/2022 Brian Baldwin Feedlot 3963 240th Street ANTHON IA 51004-- (712)373-5800 AGRICULTURAL MINOR 0211 8459250 0082813 5/31/2025 Brian Roorda Dairy, LLC 3267 460th St MAURICE IA 51036-- (712)567-3321 AGRICULTURAL MINOR 0241 1456263 0080284 4/30/2022 Brian Soyer Feedlot 23135 160TH STREET CARROLL IA 51401-- (712)792-2537 AGRICULTURAL MINOR 0211 9778501 0052953 6/30/2023 BRIAR CLIFF UNIVERSITY 3303 REBECCA ST. SIOUX CITY IA 51104-- INDUSTRIAL MINOR 8221 0115001 0062006 5/31/2025 BRIDGEWATER CITY OF (SIRWA) MAPLE ST & 280TH ST BRIDGEWATER IA 50837- (641)369-2316 MUNICIPAL MINOR 4952

2 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Facility Address Facility City Facility Facility Zip Facility Phone Permit Type Class. SIC State Code 9209001 0047911 7/31/2024 BRIGHTON CITY OF STP 1/2 MILE S OF 335TH ST. & GERMANVILLE ROAD BRIGHTON IA 52540- (319)694-2695 MUNICIPAL MINOR 4952 4103001 0023582 8/31/2026 BRITT CITY OF STP 1001 9TH AVE SW BRITT IA 50423--0303 (641)843-3853 MUNICIPAL MINOR 4952 9709001 0071510 2/28/2023 BRONSON CITY OF STP ENTRANCE CO. HOME RD APPROX 1/4 MI AND 2/3 MI W OF INTERSECT W/ MAPLE ST BRONSON IA 51007- (712)948-3354 OPERATION MINOR 4952 7909001 0020958 8/31/2023 BROOKLYN CITY OF STP 807 E. GREEN ST BROOKLYN IA 52211--0145 (641)522-7471 MUNICIPAL MINOR 4952 7256597 0079481 3/31/2026 Bruce A. Lorch, Inc 2151 White Ave OCHEYEDAN IA 51354-- (712)735-4555 AGRICULTURAL MINOR 0211 8457054 0052492 8/31/2026 Bruce Van Kekerix Feedlot 1672 300th Street ROCK VALLEY IA 51247-- (712)490-8312 AGRICULTURAL MINOR 0211 6400113 0081434 10/31/2021 BRUIN MANUFACTURING CO., INC. 607 NORTH 4TH AVENUE MARSHALLTOWN IA 50158-- (641)752-7116 INDUSTRIAL MINOR 3089 7514001 0058564 4/30/2018 BRUNSVILLE CITY OF STP NORTH OF TOWN ON ELM STREET BRUNSVILLE IA 51008--0235 (712)533-6303 MUNICIPAL MINOR 4952 5600606 0057525 6/30/2017 BRYANT'S MHP (now L & R Estates LLC) 2466 340TH STREET KEOKUK IA 52632- (319)795-6158 SEMI-PUBLIC MINOR 6515 8209100 0001198 3/31/2025 BUCKEYE TERMINALS, LLC - BETTENDORF TERMINAL 75 THIRTY-FIRST STREET BETTENDORF IA 52722- (219)397-3656 INDUSTRIAL MINOR 5171 5200109 0072273 6/30/2018 BUCKEYE TERMINALS, LLC - CEDAR RAPIDS TERMINAL 2092 HWY 965 N.E. NORTH LIBERTY IA 52317- (610)904-4225 INDUSTRIAL MINOR 5171 7820112 0071234 6/30/2024 BUCKEYE TERMINALS, LLC - COUNCIL BLUFFS TERMINAL 829 TANK FARM RD COUNCIL BLUFFS IA 51503-- (712)366-9461 INDUSTRIAL MINOR 5171 7720100 0001228 5/31/2025 BUCKEYE TERMINALS, LLC - DES MOINES TERMINAL 1501 NW 86th Street CLIVE IA 50325-- (610)904-4000 INDUSTRIAL MINOR 5171 9000103 0072281 11/30/2017 BUCKEYE TERMINALS, LLC - OTTUMWA TERMINAL 16848 87TH STREET OTTUMWA IA 52501- (219)397-3656 INDUSTRIAL MINOR 5171 9506001 0047821 5/31/2016 BUFFALO CENTER CITY OF STP 0.55 MILES NE OF 140TH ST AND 10TH AVE INTERSECTION BUFFALO CENTER IA 50424- (515)562-2505 MUNICIPAL MINOR 4952 8218002 0078760 8/31/2024 BUFFALO, CITY OF MS4 409 3RD ST BUFFALO IA 52728-- (563)377-1581 STORMWATER MINOR 4952 8218001 0020800 4/30/2023 BUFFALO, CITY OF STP 201 E. FRONT ST. BUFFALO IA 52728-- (563)381-4711 MUNICIPAL MINOR 4952 7556471 0080217 8/31/2022 Bull Creek Feedlot 17638 FIR AVE AKRON IA 51001-- (712)568-3617 AGRICULTURAL MINOR 0211 2909001 0043079 5/31/2021 BURLINGTON CITY OF STP 101 SOUTH STREET BURLINGTON IA 52601- (319)753-8157 MUNICIPAL MAJOR 4952 2909000 0084271 10/31/2025 BURLINGTON MUNICIPAL WATERWORKS 3000 DES MOINES AVE. BURLINGTON IA 52601-- (319)752-7611 MUNICIPAL-WT MINOR 4941 9600301 0072265 9/30/2024 BURR OAK SEWER COMMISSION-STP WEST OF THE INTERSECTION OF US HWY 52 & 362ND STREET BURR OAK IA 52101-- (563)382-9479 OPERATION MINOR 4952 5510001 0027405 10/31/2023 BURT CITY OF STP APPROX 1/4 MILE SOUTH OF 1ST ST AND MAPLE ST INTERSECT BURT IA 50522-- (515)924-3660 MUNICIPAL MINOR 4952 6309001 0072991 7/31/2025 BUSSEY CITY OF STP North of 310th St, East of Bussey BUSSEY IA 50044--0190 (641)944-5532 MUNICIPAL MINOR 4952 6056865 0081370 9/30/2023 C & C Feedlot 2683 Dipper Ave ROCK VALLEY IA 51247-- (712)753-4948 AGRICULTURAL MINOR 0211 2320001 0028622 12/31/2022 CALAMUS CITY OF STP OFF GROVE STREET, SW OF TOWN CALAMUS IA 52729- (563)246-2755 MUNICIPAL MINOR 4952 9417001 0057096 1/31/2022 CALLENDER CITY OF STP EAST OF TOWN & 0.13 MILES NORTH OF 295TH STREET CALLENDER IA 50523- (515)548-3634 MUNICIPAL MINOR 4952 8200607 0063339 4/30/2025 CALLISON MOBILE HOME PARK 4105 NOBIS DRIVE DAVENPORT IA 52802- (563)285-7698 SEMI-PUBLIC MINOR 6515 9615001 0023515 4/30/2025 CALMAR CITY OF STP 675 FEET SE FROM INTERSECTION OF CLAY ST & IOWA ST CALMAR IA 52132-- (563)562-3154 MUNICIPAL MINOR 4952 7109001 0062049 9/30/2016 CALUMET CITY OF STP 480TH ST. 1/2 MILE WEST OF TANAGER AVE. CALUMET IA 51009- (712)446-2490 MUNICIPAL MINOR 4952 3405100 0003557 10/31/2021 CAMBREX CHARLES CITY, INC. 1205 11th St CHARLES CITY IA 50616-- (641)257-1059 INDUSTRIAL MAJOR 2833 8509001 0022101 4/30/2019 CAMBRIDGE CITY OF STP 750 FEET WEST FROM INTERSECT OF CENTER ST. AND EAST ST. CAMBRIDGE IA 50046--8017 (515)383-4541 MUNICIPAL MINOR 4952 5100105 0079707 2/28/2025 CAMBRIDGE INVESTMENT RESEARCH INC. 1776 PLEASANT PLAIN ROAD FAIRFIELD IA 52556-- (641)472-5100 SEMI-PUBLIC MINOR 8641 8200402 0067059 1/31/2022 CAMP ABE LINCOLN 1624 W. FRONT STREET BLUE GRASS IA 52726-- (563)381-3053 SEMI-PUBLIC MINOR 7033 5300802 0071820 2/29/2024 CAMP COURAGEOUS OF IOWA 12007 190TH STREET MONTICELLO IA 52310- (319)465-5916 SEMI-PUBLIC MINOR 7033 7700901 0063215 7/31/2024 CAMP DODGE 7105 NW 70TH AVE JOHNSTON IA 50131-- (515)252-4557 SEMI-PUBLIC MINOR 9711 2200401 0079839 2/29/2024 CAMP EWALU 37776 ALPHA AVENUE STRAWBERRY POINT IA 52076- (563)933-4700 SEMI-PUBLIC MINOR 7033 0800403 0073806 7/31/2022 CAMP HANTESA STP (CAMP FIRE) 1450 ORIOLE ROAD BOONE IA 50036- (515)432-1417 SEMI-PUBLIC MINOR 7021 8920001 0056685 11/30/2015 CANTRIL CITY OF STP OFF WEST STREET, SE OF TOWN CANTRIL IA 52542--0235 (319)397-2295 MUNICIPAL MINOR 4952 9000501 0064700 10/31/2024 CARDINAL SCHOOL STP 4045 ASHLAND ROAD ELDON IA 52554- (515)652-7531 SEMI-PUBLIC MINOR 8211 6200106 0071170 5/31/2022 CARGILL INC. EDDYVILLE LEACHATE TREATMENT PLANT 1194 720TH AVE EDDYVILLE IA 52553--8528 (515)969-3728 INDUSTRIAL MINOR 4953 5715100 0000647 9/30/2025 CARGILL INCORPORATED 1710 16TH ST SE CEDAR RAPIDS IA 52401--2638 (319)399-2150 INDUSTRIAL MINOR 2046 6800100 0063762 11/30/2022 CARGILL, INC. 17540 MONROE WAPELLO RD EDDYVILLE IA 52553-- (641)969-3918 INDUSTRIAL MAJOR 2046 9113001 0024554 3/31/2024 CARLISLE CITY OF STP 0.3 MILES EAST OF PARK ST & RAILROAD ST INTERSECTION CARLISLE IA 50047- (515)989-0125 MUNICIPAL MAJOR 4952 5700601 0065609 2/28/2026 CARLTON MOBILE HOME COURT 1106 DUBUQUE ROAD SPRINGVILLE IA 52336- (319)854-7013 SEMI-PUBLIC MINOR 6515 6616001 0081566 1/31/2024 CARPENTER CITY OF STP 1/2 MILE S OF WILLIAM ST & ZINNIA AVE INTERSECTION CARPENTER IA 50426-- MUNICIPAL MINOR 4952 1415001 0021377 10/31/2021 CARROLL, CITY OF STP 1400 E ANTHONY CARROLL IA 51401--3843 (712)792-2560 MUNICIPAL MAJOR 4952 7809001 0042901 2/28/2022 CARSON CITY OF STP 39897 HWY 92 CARSON IA 51525-- (712)484-2270 MUNICIPAL MINOR 4952 7812000 0078891 6/30/2026 CARTER LAKE, CITY OF MS4 950 LOCUST ST CARTER LAKE IA 51510-- (712)347-6320 STORMWATER MINOR 4952 5318001 0027740 1/31/2023 CASCADE CITY OF STP 24739 RIVERVIEW RD CASCADE IA 52033- (563)852-3396 MUNICIPAL MAJOR 4952 3914001 0027197 3/8/2006 Casey, City of STP OFF OF 350TH STREET, EAST OF TOWN CASEY IA 50048- (641)746-3315 MUNICIPAL MINOR 4952 9620001 0076236 2/28/2015 CASTALIA CITY OF STP 1/2 MI. EAST OF CENTENIAL RD & GREENE ST INTERSECT. CASTALIA IA 52133- (563)380-9682 MUNICIPAL MINOR 4952 0709001 0036633 7/31/2024 CEDAR FALLS CITY OF STP 501 EAST 4TH STREET CEDAR FALLS IA 50613--3320 (319)273-8633 MUNICIPAL MAJOR 4952 0709600 0064033 1/31/2026 CEDAR FALLS MOBILE HOME VILLAGE 3825 WEST 27TH STREET CEDAR FALLS IA 50613- (319)269-6385 SEMI-PUBLIC MINOR 6515 0709102 0002534 8/31/2017 CEDAR FALLS UTILITIES UTILITY PKWY CEDAR FALLS IA 50613-- (319)268-5309 INDUSTRIAL MINOR 4911 0709003 0078263 4/30/2024 CEDAR FALLS, CITY OF MS4 CITY OF CEDAR FALLS CEDAR FALLS IA 50613-- (319)273-8610 STORMWATER MINOR 4952 5715001 0042641 5/31/2022 CEDAR RAPIDS CITY OF STP 7525 BERTRAM ROAD SE CEDAR RAPIDS IA 52403--7111 (319)286-5286 MUNICIPAL MAJOR 4952 5715146 0052651 5/31/2022 CEDAR RAPIDS COUNTRY CLUB 550 27TH STREET DR. SE CEDAR RAPIDS IA 52403-- INDUSTRIAL MINOR 7997 5715141 0077381 8/31/2023 CEDAR RAPIDS FRANKLIN MIDDLE SCHOOL 300 20TH ST NE CEDAR RAPIDS IA 52402- (319)558-1093 INDUSTRIAL MINOR 8211 5715142 0077968 8/31/2024 CEDAR RAPIDS MCKINLEY MIDDLE SCHOOL 620 10TH STREET SE CEDAR RAPIDS IA 52402- (319)558-1221 INDUSTRIAL MINOR 8211 5715143 0078344 3/31/2024 CEDAR RAPIDS WILSON MIDDLE SCHOOL 2301 J STREET SW CEDAR RAPIDS IA 52404-- (319)558-1093 INDUSTRIAL MINOR 8211 5715005 0075566 1/31/2026 CEDAR RAPIDS, CITY OF MS4 1201 6TH STREET SW CEDAR RAPIDS IA 52404--5847 (319)398-5026 STORMWATER MINOR 4952 0700201 0082481 12/31/2024 CEDAR VALLEY SUITES 1 PEREGRINE WAY CEDAR FALLS IA 50613-- (319)277-8717 OPERATION MINOR 6211 8400124 0053315 4/30/2026 CENTER FRESH EGG FARM - DOMESTIC WASTEWATER 2791 410TH STREET SIOUX CENTER IA 51250-- (712)722-0132 SEMI-PUBLIC MINOR 0252 8400117 0080641 7/31/2023 CENTER FRESH EGG FARM - LAOP 4135 GARFIELD AVENUE SIOUX CENTER IA 51250-- (712)722-0132 OPERATION MINOR 0252 5315001 0080357 12/31/2024 CENTER JUNCTION, CITY OF STP NE OF CENTER JUNCTION CENTER JUNCTION IA 52022-- (563)556-4166 MUNICIPAL MINOR 4952 5718001 0021067 7/31/2022 CENTER POINT CITY OF STP (NORTH) NORTH EDGE OF TOWN, APPROX 0.2 MILES SOUTH OF 4668 NEWBOLD RD CENTER POINT IA 52213- (319)849-1730 MUNICIPAL MINOR 4952 5718002 0074420 7/31/2022 CENTER POINT, CITY OF STP (SOUTH) SOUTH EDGE OF TOWN, APPROX 0.4 MI. SOUTH OF PALO RD & FORD LN INTERSECT CENTER POINT IA 52213-- (319)849-1730 MUNICIPAL MINOR 4952 8900901 0076741 8/31/2026 CENTER VILLAGE CARE FACILITY-STP 19248 MAPLE AVE KEOSAUQUA IA 52565- (319)293-3107 SEMI-PUBLIC MINOR 8051 0407003 0027472 11/30/2023 CENTERVILLE CITY OF STP (EAST) OFF EAST STATE ST, EAST OF TOWN CENTERVILLE IA 52544- (641)856-3709 MUNICIPAL MAJOR 4952 0407004 0027464 11/30/2023 CENTERVILLE CITY OF STP (WEST) 1/3 MILE SE OF HWY 2 & "A" ST. INTERSECT (SOUTH OF IOWA STEEL & WIRE CO.) CENTERVILLE IA 52544- (641)437-1562 MUNICIPAL MINOR 4952 9778121 0030881 12/31/2023 CENTRAL BANK 522 4TH STREET, P.O. BOX 776 SIOUX CITY IA 51102-- (712)293-2265 INDUSTRIAL MINOR 6021 5720001 0027979 3/31/2022 CENTRAL CITY CITY OF STP 225 SOUTH 8TH CENTRAL CITY IA 52214--9596 (319)438-1713 MUNICIPAL MINOR 4952 5600501 0069426 6/30/2025 CENTRAL LEE COMMUNITY SCHOOLS 2642 HWY 218 DONNELLSON IA 52625- (319)835-9510 SEMI-PUBLIC MINOR 8211 3000800 0083879 5/31/2025 CENTRAL WATER SYSTEM 3300 LAKESHORE DR OKOBOJI IA 51355-- (712)332-5000 MUNICIPAL-WT MINOR 4941 9900123 0082783 9/30/2025 CENTRUM VALLEY FARMS, LLP - LAOP 2865 310TH ST. DOWS IA 50071-- OPERATION MINOR 2015 9700104 0004014 8/31/2020 CF INDUSTRIES NITROGEN, LLC - PORT NEAL NITROGEN COMPLEX 1182 260TH STREET SERGEANT BLUFF IA 51054- (712)233-6274 INDUSTRIAL MAJOR 2873 9000105 0077062 9/30/2021 CHAMNESS TECHNOLOGY, INC.-LAND APPLICATION 24820 160TH STREET EDDYVILLE IA 52553--8024 (641)969-5702 OPERATION MINOR 2875 5903001 0028924 3/31/2023 CHARITON CITY OF STP 25388 482nd Street CHARITON IA 50049- (641)774-2255 MUNICIPAL MAJOR 4952 3405000 0003182 3/31/2024 CHARLES CITY WATER TREATMENT PLANT 1709 Indiana Avenue CHARLES CITY IA 50616-- (641)257-6315 MUNICIPAL-WT MINOR 4941 3405001 0022039 5/31/2026 CHARLES CITY, CITY OF STP 307 SHAW AVE. CHARLES CITY IA 50616-- (515)257-6318 MUNICIPAL MAJOR 4952 2324001 0062341 1/31/2025 CHARLOTTE CITY OF STP 1/2 MILE N, 1/4 E OF 320TH AVE. CHARLOTTE IA 52731- (563)677-2710 MUNICIPAL MINOR 4952 2417001 0022268 2/29/2024 CHARTER OAK CITY OF STP 0.30 MILES SOUTHWEST OF INTERSECTION OF BIRCH AVENUE AND HIGHWAY 141 CHARTER OAK IA 51439- (712)678-3580 MUNICIPAL MINOR 4952 8609001 0071552 1/31/2026 CHELSEA CITY OF STP OFF OF HWY E66, EAST OF TOWN CHELSEA IA 52215- (319)444-3144 MUNICIPAL MINOR 4952 1811002 0059005 1/31/2026 CHEROKEE CITY OF STP 5475 RIVER RD. CHEROKEE IA 51012-- (712)225-5501 MUNICIPAL MAJOR 4952 1800900 0082791 12/31/2023 CHEROKEE RURAL WATER DISTRICT #1 - CHEROKEE SUBSYSTEM 1593 580TH STREET CHEROKEE IA 51012-- (712)225-6193 MUNICIPAL-WT MINOR 4941 4509001 0020931 6/30/2023 CHESTER CITY OF STP SOUTH SIDE OF RIVER ST, APPROX 0.2 MILES E OF RIVER ST & PARK ST INTERSECT CHESTER IA 52134-- (563)565-2768 MUNICIPAL MINOR 4952 9032001 0071081 1/31/2016 CHILLICOTHE,CITY OF-(WAPELLO RURAL WATER ASSN). 18660 130th Ave CHILLICOTHE IA 52501-- (515)682-8351 MUNICIPAL MINOR 4952 5000400 0068365 1/31/2019 CHRISTIAN CONFERENCE CENTER 5064 LINCOLN STREET NEWTON IA 50208- (641)792-1266 SEMI-PUBLIC MINOR 7032 3709001 0031216 1/31/2024 CHURDAN CITY OF STP 1500 FEET NE OF HILLS AVE & SAND ST INTERSECTION (EAST OF TOWN) CHURDAN IA 50050-- (515)389-3235 MUNICIPAL MINOR 4952

3 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Facility Address Facility City Facility Facility Zip Facility Phone Permit Type Class. SIC State Code 0410001 0070734 10/31/2023 CINCINNATI CITY OF STP NORTH END OF WALNUT STREET CINCINNATI IA 52549- (641)658-2888 MUNICIPAL MINOR 4952 8800105 0081442 8/31/2020 CIPCO - SUMMIT LAKE 1632 REA ROAD CRESTON IA 50801-- (641)782-2158 INDUSTRIAL MINOR 4911 8456296 0079154 12/31/2022 Circle G Cattle, LLC 4334 390TH STREET HOSPERS IA 51238-- (712)324-1341 AGRICULTURAL MINOR 0211 8503002 0033235 5/31/2022 CITY OF AMES STEAM ELECTRIC PLANT 200 E. 5TH ST. AMES IA 50010--0811 (515)239-5176 INDUSTRIAL MINOR 4911 8456363 0080101 10/31/2021 City View Farms - West 4045 GRANT AVE SIOUX CENTER IA 51250-- (712)446-2324 AGRICULTURAL MINOR 0211 7160334 0077569 8/31/2024 City View Farms East 4135 Yellow Ave. SUTHERLAND IA 51058-- (712)446-2274 AGRICULTURAL MINOR 0211 1556657 0078069 10/31/2023 Clan Farms, Inc 2900 W 29th Street ATLANTIC IA 50022-- (712)243-5485 AGRICULTURAL MINOR 0211 9420001 0062936 7/31/2025 CLARE CITY OF STP 0.4 MILES SW OF HOOD AVE & FRONT ST INTERSECTION CLARE IA 50524- (515)546-6272 MUNICIPAL MINOR 4952 1630001 0027201 6/30/2026 CLARENCE CITY OF STP NORTH OF RR CROSSING WHERE 1ST AVE BECOMES PLUM AVE CLARENCE IA 52216- (319)452-3625 MUNICIPAL MINOR 4952 7329001 0035190 6/30/2021 CLARINDA CITY OF STP 1420 EAST LAPERLA STREET CLARINDA IA 51632- (712)542-4383 MUNICIPAL MAJOR 4952 9909001 0030945 11/30/2017 CLARION, CITY OF STP 830 4TH STREET S.W. CLARION IA 50525-- (515)532-2847 MUNICIPAL MINOR 4952 1228001 0023388 9/30/2023 CLARKSVILLE CITY OF STP APPROX 0.25 MILES SOUTH OF S ELY ST & W JEFFERSON ST INTERSECT CLARKSVILLE IA 50619-- (319)278-4531 MUNICIPAL MINOR 4952 8456473 0083682 6/30/2022 Claussen Farms 1990 280th Street ROCK VALLEY IA 51247-- (712)476-9985 AGRICULTURAL MINOR 0211 1716901 0058441 5/31/2021 CLEAR LAKE SANITARY DISTRICT 5631 235TH STREET CLEAR LAKE IA 50428-- (641)357-2019 MUNICIPAL MAJOR 4952 8012001 0070980 10/31/2024 CLEARFIELD CITY OF STP HIGHWAY 25 & COUNTY ROAD J23 CLEARFIELD IA 50840--0217 (641)336-2479 MUNICIPAL MINOR 4952 1817001 0042846 7/31/2021 CLEGHORN CITY OF STP CITY CLERK, CITY HALL CLEGHORN IA 51014- (712)436-2266 MUNICIPAL MINOR 4952 6415001 0057509 2/28/2026 CLEMONS CITY OF STP 0.2 MI EAST OF BEVIN ST ON 165TH ST CLEMONS IA 50051- (641)485-4465 MUNICIPAL MINOR 4952 3317001 0024465 8/31/2026 CLERMONT CITY OF STP 0.35 MILES S OF HARDING RD AND BROWN ST INTERSECTION CLERMONT IA 52135- (563)423-7295 MUNICIPAL MINOR 4952 5625106 0059978 11/30/2025 CLIMAX MOLYBDENUM COMPANY 2598 Highway 61 South FORT MADISON IA 52627 (319)463-7151 INDUSTRIAL MAJOR 3339 2326001 0035947 2/28/2023 CLINTON CITY OF STP 1901 BEAVER CHANNEL PARKWAY CLINTON IA 52732-- (563)243-4064 MUNICIPAL MAJOR 4952 7720002 0078867 8/31/2024 CLIVE, CITY OF MS4 1900 NW 114TH ST CLIVE IA 50325-- (515)223-6220 STORMWATER MINOR 4952 8616001 0056812 2/28/2016 CLUTIER CITY OF STP 320 FRONT STREET CLUTIER IA 52217-- (319)479-2273 MUNICIPAL MINOR 4952 2326108 0001066 12/31/2025 CLYSAR, LLC HWY 67 SOUTH CLINTON IA 52732-- (563)259-3342 INDUSTRIAL MINOR 2671 2900109 0074969 9/26/2009 CNH AMERICA LLC BURLINGTON PROVING GROUNDS 8778 170TH ST. BURLINGTON IA 52601- (319)754-3457 INDUSTRIAL MINOR 8731 2909100 0000787 3/27/2011 CNH AMERICA, LLC 1930 DES MOINES AVE. BURLINGTON IA 52601--0848 (319)754-3000 INDUSTRIAL MINOR 3531 9400301 0062421 9/30/2024 COATS UTILITY COMPANY (XENIA RURAL WATER) OFF OF NELSON AVE/COUNTY RD. P59, WEST OF COALVILLE FORT DODGE IA 50501- (515)573-7353 SEMI-PUBLIC MINOR 4939 5722001 0024473 12/31/2022 COGGON CITY OF STP 0.1 MILES NE OF E LINN ST AND S 5TH ST INTERSECTION COGGON IA 52218-- (319)435-2314 MUNICIPAL SIGNIFICANT MINOR 4952 7335001 0062332 1/31/2022 COIN CITY OF STP H AVE & HACKBERRY AVE COIN IA 51636- (712)583-3523 MUNICIPAL MINOR 4952 2809002 0023604 9/30/2024 COLESBURG CITY OF STP (SOUTHEAST) East End of New Street COLESBURG IA 52035- (563)856-3185 MUNICIPAL MINOR 4952 5009001 0041980 3/31/2025 COLFAX CITY OF STP 401 N. WALNUT COLFAX IA 50054-- (515)674-4096 MUNICIPAL MINOR 4952 8515001 0047767 7/31/2016 COLLINS CITY OF STP 0.3 MILES WEST OF 1ST AVE AND 2ND ST INTERSECTION COLLINS IA 50055- (641)385-2205 MUNICIPAL MINOR 4952 8520001 0047759 3/31/2022 COLO CITY OF STP 0.5 MILE SOUTH OF RAY STREET & 6TH STREET COLO IA 50056--0294 (641)377-2238 MUNICIPAL MINOR 4952 5815001 0023523 4/30/2023 COLUMBUS JUNCTION CITY OF STP East of Highway 70 bypass, North of RR tracks COLUMBUS JUNCTION IA 52738-- (319)728-7973 MUNICIPAL MINOR 4952 5600105 0000833 8/31/2026 CONAGRA FOODS PACKAGED FOODS, LLC 2467 HENRY LADYN DR FORT MADISON IA 52627-- (319)463-7111 INDUSTRIAL MINOR 2013 7016001 0058769 7/31/2022 CONESVILLE CITY OF STP OFF HWY 70, WEST OF TOWN CONESVILLE IA 52739- (319)725-4217 MUNICIPAL MINOR 4952 1000500 0067393 4/30/2025 CONO RIDGE HAVEN 3269 QUASQUETON AVE WALKER IA 52532- (319)448-4395 SEMI-PUBLIC MINOR 8211 3809001 0034355 2/28/2022 CONRAD CITY OF STP JENNINGS STREET, SE OF CITY CONRAD IA 50621--0429 (515)366-2300 MUNICIPAL MINOR 4952 4807001 0079901 8/31/2021 CONROY, IOWA - POWESHIEK WATER ASSOC 1945 Q AVENUE MARENGO IA 52301-- (641)522-7416 MUNICIPAL MINOR 4952 8200107 0063525 9/30/2024 CONTINENTAL CEMENT COMPANY, LLC - DAVENPORT PLANT 301 E FRONT STREET BUFFALO IA 52728- (563)323-2751 INDUSTRIAL MINOR 3241 3126202 0052864 8/31/2022 Convivium Urban Farmstead 2805 Jackson St. DUBUQUE IA 52001-- (563)557-2900 INDUSTRIAL MINOR 8299 3927002 0028983 1/31/2024 COON RAPIDS CITY OF STP HWY 141 AND EEL LN. SOUTHEAST OF TOWN COON RAPIDS IA 50058--0207 (712)999-2225 MUNICIPAL MINOR 4952 1427000 0049692 12/31/2024 COON RAPIDS MUNICIPAL UTILITIES WTP 308 SKYLINE DR. COON RAPIDS IA 50058-- MUNICIPAL-WT MINOR 4941 5208001 0020788 3/31/2026 CORALVILLE CITY OF STP 750 CAMP CARDINAL BLVD CORALVILLE IA 52241--5127 (319)248-1700 MUNICIPAL MAJOR 4952 5208002 0078646 8/31/2024 CORALVILLE, CITY OF MS4 1512 7TH ST. CORALVILLE IA 52241-- (319)248-1720 STORMWATER MINOR 4952 1356238 0079731 6/30/2021 Corey Agri, Inc. of Lytton Beef Feeding 1530 280TH STREET LYTTON IA 50561-- (712)297-7316 AGRICULTURAL MINOR 0212 2100100 0004570 7/31/2022 CORN BELT POWER COOPERATIVE-WISDOM STATION 3365 165TH AVE SPENCER IA 51301-- (515)332-2571 INDUSTRIAL MINOR 4911 9937101 0079545 9/30/2021 CORN, LP 1303 Highway 3 E GOLDFIELD IA 50542-- (515)825-3161 INDUSTRIAL MINOR 2869 0220001 0027375 10/31/2022 CORNING CITY OF STP 0.25 MILES SE OF LOOMIS AVE & 4TH ST INTERSECT CORNING IA 50841- (515)322-3410 MUNICIPAL SIGNIFICANT MINOR 4952 0220000 0076759 12/31/2023 CORNING MUNICIPAL UTILITIES WATER TREATMENT PLANT 101 15TH ST CORNING IA 50841-- (515)322-3920 MUNICIPAL-WT MINOR 4941 9721001 0023531 10/31/2021 CORRECTIONVILLE CITY OF STP 4138 160th ST CORRECTIONVILLE IA 51016-- (712)372-4791 MUNICIPAL MINOR 4952 5280301 0077992 1/31/2025 CORRIDOR RIDGE SUBDIVISION-SHUEYVILLE 120TH STREET AND JAMES AVENUE SHUEYVILLE IA 52333-- (319)721-7221 SEMI-PUBLIC MINOR 8641 4109001 0021351 1/31/2022 CORWITH CITY OF STP SANDRING ST EAST OF TOWN CORWITH IA 50430- (515)583-2342 MUNICIPAL MINOR 4952 9334004 0049573 6/30/2026 CORYDON CITY OF STP OFF OF EAST SOUTH ST., SOUTH OF TOWN CORYDON IA 50060- (515)872-1826 MUNICIPAL MINOR 4952 5200801 0068331 8/31/2022 COTTAGE RESERVE CORPORATION 3779 COTTAGE RESERVE ROAD NE SOLON IA 52333- (319)626-2988 SEMI-PUBLIC MINOR 6531 7820001 0036641 11/30/2025 COUNCIL BLUFFS CITY OF STP 18542 APPLEWOOD ROAD COUNCIL BLUFFS IA 51501- (712)328-4642 MUNICIPAL MAJOR 4952 7820000 0077470 12/31/2018 COUNCIL BLUFFS NARROWS TREATMENT PLANT 2000 NORTH 25TH STREET COUNCIL BLUFFS IA 51501-- (712)328-1006 MUNICIPAL-WT MINOR 4941 7820003 0078271 12/31/2022 COUNCIL BLUFFS, CITY OF MS4 209 PEARL ST. COUNCIL BLUFFS IA 51503-- (712)328-4635 STORMWATER MINOR 4952 7820004 0082074 8/31/2022 COUNCIL POINT WATER PURIFICATION PLANT 6401 GIFFORD ROAD COUNCIL BLUFFS IA 51502-- MUNICIPAL-WT MINOR 4941 0600601 0077330 1/31/2026 COUNTRY AIRE TRAILER COURT-STP 7297 32ND AVE #43 ATKINS IA 52206- (319)446-7825 SEMI-PUBLIC MINOR 6515 8300901 0066214 2/29/2024 COUNTRY CARE CENTER CORPORATION 725 HWY 59 HARLAN IA 51537--0351 (712)744-3453 SEMI-PUBLIC MINOR 8051 5900201 0074551 10/31/2020 COUNTRY CONDOS-STP 25119 US HIGHWAY 34 CHARITON IA 50049- (641)774-2434 SEMI-PUBLIC MINOR 8641 8200601 0065471 8/31/2023 COUNTRY ESTATES MOBILE HOME PARK 30980 SCOTT PARK ROAD LONG GROVE IA 52756- (563)285-7717 SEMI-PUBLIC MINOR 6515 6500602 0082201 11/30/2020 COUNTRY ESTATES MOBILE HOME PARK 0.6 MILES WEST OF 189TH ST & APPLEWOOD AVE INTERSECTION COUNCIL BLUFFS IA 51503-- (712)310-1105 OPERATION MINOR 6515 8500601 0068527 11/30/2021 COUNTRY LIVING COURT, LLC 67677 250TH STREET COLO IA 50056-- (612)581-8805 SEMI-PUBLIC MINOR 6515 7700605 0068004 8/31/2025 COUNTRY LIVING MOBILE HOME PARK 6930 NE 56TH ST. ALTOONA IA 50009- (515)957-9147 SEMI-PUBLIC MINOR 6515 4500901 0083461 3/31/2017 COUNTRY WINDS MANOR, INC. 21668 80TH ST. CRESCO IA 52136-- (563)547-2398 SEMI-PUBLIC MINOR 8361 8556450 0079561 6/30/2021 Couser Cattle Company 19568 620TH AVENUE NEVADA IA 50201-- (515)382-6101 AGRICULTURAL MINOR 0211 0790122 0077437 9/22/2013 COVENANT MEDICAL CENTER 3421 WEST NINTH STREET WATERLOO IA 50702- (319)272-7853 INDUSTRIAL MINOR 8062 7561286 0077585 6/30/2022 Craig Anderson Feedlot 24999 JADE AVENUE MERRILL IA 51038-- (712)938-2493 AGRICULTURAL MINOR 0211 7521001 0075850 3/31/2025 CRAIG, CITY OF STP (SOUTHERN SIOUX CO. RURAL WATER SYSTEM) 1/4 MILE EAST OF CRAIG, SOUTH OF 110 STREET CRAIG IA 51031- (712)278-2924 OPERATION MINOR 4952 9214001 0076074 1/31/2024 CRAWFORDSVILLE, CITY OF (WAPELLO RURAL WATER ASSN) 512 E COLUMBUS CRAWFORDSVILLE IA 52621--0186 (641)682-8351 MUNICIPAL MINOR 4952 7822001 0076431 9/30/2022 CRESCENT CITY OF STP 0.6 MILE WEST OF TOWN & NORTH OF HWY 988 CRESCENT IA 51526- (712)545-3981 MUNICIPAL MINOR 4952 3126802 0081850 5/31/2026 CRESCENT COMMUNITY HEALTH CENTER 1798 WASHINGTON STREET DUBUQUE IA 52001-- INDUSTRIAL MINOR 8011 4515001 0021334 6/30/2026 CRESCO CITY OF STP 24321 90TH STREET CRESCO IA 52136- (319)547-3600 MUNICIPAL MAJOR 4952 4800715 0065480 4/30/2025 CREST COUNTRY INN 340 WEST EVANS WILLIAMSBURG IA 52361- (319)668-1522 SEMI-PUBLIC MINOR 7011 8816001 0035238 12/31/2025 CRESTON CITY OF STP 710 South Lake Shore Drive CRESTON IA 50830-- (641)782-2273 MUNICIPAL MAJOR 4952 8816000 0078514 10/11/2011 CRESTON CITY WATER TREATMENT PLANT 1730 LARK AVE CRESTON IA 50830-- (641)782-5817 MUNICIPAL-WT MINOR 4941 8822001 0074063 6/30/2016 CROMWELL, CITY-STP -SIRWA NORTH OF TOWN AT 180TH ST & MONROE ST. CROMWELL IA 50842-- (641)782-5744 MUNICIPAL MINOR 4952 2326110 0003522 1/31/2024 CROSS ROADS LAND DEVELOPMENT, LLC 3103 21ST STREET, SUITE A CAMANCHE IA 52730- (563)242-6871 INDUSTRIAL MINOR 2873 4356318 0080667 3/31/2023 Crossroads Cattle Company 1514 Panora Avenue WOODBINE IA 51579-- (712)647-2944 AGRICULTURAL MINOR 0211 5600100 0003387 4/30/2024 CRYOTECH DEICING TECHNOLOGY 6103 ORTHO WAY FORT MADISON IA 52627- INDUSTRIAL MINOR 2899 4115001 0062367 6/30/2016 CRYSTAL LAKE CITY OF STP APPROXIMATELY 0.07 MILES EAST OF 3RD STREET CRYSTAL LAKE IA 50432--0217 (641)565-3577 MUNICIPAL MINOR 4952 4515103 0064955 10/26/2009 CULLIGAN WATER CONDITIONING OF CRESCO 606 2ND AVENUE SW CRESCO IA 52136- (563)547-4014 INDUSTRIAL MINOR 7389 1516001 0034363 9/30/2019 CUMBERLAND CITY OF STP 0.1 MILES S & 0.5 MILES W OF JACKSON & 1ST ST INTERSECTION CUMBERLAND IA 50843- (712)774-2200 MUNICIPAL MINOR 4952 9725001 0023477 1/31/2025 CUSHING CITY OF STP 1/4 MILE N. OF CO HWY L43 AND 160TH ST INTERSECTION. CUSHING IA 51018--0014 (712)384-2189 MUNICIPAL MINOR 4952 7860582 0076040 7/1/2014 Cyclone Cattle, LLC 36488 BEECHNUT ROAD CARSON IA 51525-- (800)480-2487 AGRICULTURAL MINOR 0211 7414001 0064823 3/31/2023 CYLINDER CITY OF STP 1/3 MILE WEST OF TOWN NORTH OF RAILROAD CYLINDER IA 50528- (712)424-3344 MUNICIPAL MINOR 4952 6066014 0081990 1/31/2024 D & B Feedlot 1263 260th Street INWOOD IA 51240-- (712)986-5930 AGRICULTURAL MINOR 0211 3065340 0082970 9/30/2025 D & G Farms 1938 220th Street MILFORD IA 51351-- (712)338-2883 AGRICULTURAL MINOR 0211

4 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Facility Address Facility City Facility Facility Zip Facility Phone Permit Type Class. SIC State Code 8466282 0083500 8/31/2026 D & H Feedlot 2279 290th Street ROCK VALLEY IA 51247-- (712)476-5226 AGRICULTURAL MINOR 0211 9300104 0077895 3/31/2024 DAIRICONCEPTS, L.P. 211 N. CENTRAL AVE. ALLERTON IA 50008-- (641)873-4121 INDUSTRIAL MINOR 2023 4622001 0048003 3/31/2022 DAKOTA CITY CITY OF STP 805 1ST AVE NORTH DAKOTA CITY IA 50529- (515)368-3083 MUNICIPAL MINOR 4952 2520001 0035319 7/31/2021 DALLAS CENTER CITY OF STP 2711 250TH STREET DALLAS CENTER IA 50063- (515)992-3382 MUNICIPAL MAJOR 4952 7666839 0083933 12/31/2022 Dallas Janssen Heifer Ranch 54846 270th Ave. PALMER IA 50571-- (712)359-2316 AGRICULTURAL MINOR 0241 6058490 0084239 7/31/2024 Damon Bahnson Combined Operation 1754 220th Street INWOOD IA 51240-- (712)753-4923 AGRICULTURAL MINOR 0211 9766009 0084182 10/31/2023 Dan Burkhart Site #2 Feedlot 2657 LEE AVE OTO IA 51044--8036 (712)281-1013 AGRICULTURAL MINOR 0211 9729001 0035246 9/30/2022 DANBURY CITY OF STP WEST SIDE OF COUNTY HWY D54 NORTH OF MAPLE RIVER DANBURY IA 51019- (712)883-2431 MUNICIPAL MINOR 4952 2915001 0025861 11/30/2024 DANVILLE CITY OF STP OFF OF EAST KELLAR DR., SOUTH OF TOWN DANVILLE IA 52623- (319)392-4685 MUNICIPAL MINOR 4952 8461591 0083011 9/30/2023 Darin Green Feedlot 2937 Kingbird Ave. BOYDEN IA 51234-- (712)725-1920 AGRICULTURAL MINOR 0211 8456598 0053218 6/30/2025 Darin Smith 2040 360th St. HAWARDEN IA 51023-- AGRICULTURAL MINOR 0241 2326104 0000914 1/31/2022 DARLING INGREDIENTS INC. 1423 BEAVER CHANNEL PARKWAY CLINTON IA 52732-- (563)242-9200 INDUSTRIAL MINOR 2077 8222003 0043052 6/30/2026 DAVENPORT CITY OF STP 2606 S. CONCORD STREET DAVENPORT IA 52808- MUNICIPAL MAJOR 4952 8222005 0078808 6/30/2024 DAVENPORT, CITY OF MS4 1200 E 46TH ST. DAVENPORT IA 52807-- (563)326-7734 STORMWATER MINOR 4952 8222004 0076261 4/30/2023 DAVENPORT, CITY OF-WEST LOCUST LAGOON 2400 WEST LAKE BOULEVARD DAVENPORT IA 52808- (563)326-7877 MUNICIPAL MINOR 4952 3056816 0080128 2/28/2022 David and Dan Lorch Combined Operation 2176 100th Ave. HARRIS IA 51345-- (712)735-6800 AGRICULTURAL MINOR 0211 2715001 0060232 4/30/2025 DAVIS CITY, CITY OF STP (SIRWA) 1/2 MILE S. OF TOWN ON 210TH AVE. DAVIS CITY IA 50065- (641)442-8156 MUNICIPAL MINOR 4952 2600901 0065846 12/31/2015 DAVIS COUNTY CARE FACILITY 22425 OVERLAND AVE. BLOOMFIELD IA 52537-- (515)664-3629 SEMI-PUBLIC MINOR 8051 9900124 0077411 7/31/2023 DAYBREAK FOODS INC - VINCENT FARM - LAOP 3159 BUCHANAN AVE EAGLE GROVE IA 50533-- (515)603-3050 OPERATION MINOR 0252 9425001 0023558 2/28/2022 DAYTON CITY OF STP 0.6 MILES W OF SAMSON AVE & IOWA 175 INTERSECTION DAYTON IA 50530-- (515)547-2711 MUNICIPAL MINOR 4952 2718001 0072745 1/31/2016 DECATUR CITY-STP-SIRWA 19721 HWY 2 DECATUR IA 50067- (641)782-5744 MUNICIPAL MINOR 4952 9630101 0003794 5/31/2012 DECO PRODUCTS CO. 506 SANFORD STREET DECORAH IA 52101-- (563)382-4264 INDUSTRIAL MINOR 3369 9630001 0035220 8/31/2022 DECORAH CITY OF STP 1766 OLD STAGE ROAD DECORAH IA 52101- (563)382-3410 MUNICIPAL MAJOR 4952 9630502 0084000 5/31/2022 DECORAH COMM SCH DIST - THOMAS R. ROBERTS HIGH SCHOOL 100 CLAIBORNE DRIVE DECORAH IA 52101-- (563)382-4208 INDUSTRIAL MINOR 8211 1433001 0035181 10/31/2024 DEDHAM CITY OF STP 0.2 MILE NORTHEAST OF 1ST AND MAIN STREET DEDHAM IA 51440- (712)683-5711 MUNICIPAL MINOR 4952 7915001 0071943 6/30/2026 DEEP RIVER, CITY OF STP 1600 FEET SOUTH OF 2ND AVE & SOUTH ST INTERSECTION; ON 210TH STREET DEEP RIVER IA 52222- (641)595-2032 MUNICIPAL MINOR 4952 1856511 0079618 8/31/2022 Deer Run Ranch 5125 VINE AVE SUTHERLAND IA 51058-- (712)262-6762 AGRICULTURAL MINOR 0211 8315001 0042862 6/30/2023 DEFIANCE CITY OF STP 400 1ST STREET DEFIANCE IA 51527- (712)748-3431 MUNICIPAL MINOR 4952 2813001 0062855 9/30/2018 DELAWARE CITY OF STP 0.65 MILES WEST OF INTERSECT US HWY 20 & 245TH AVE DELAWARE IA 52057-- (563)922-2743 MUNICIPAL MINOR 4952 2817001 0047848 11/30/2021 DELHI CITY OF STP 2553 240TH AVE. DELHI IA 52223- (563)608-2864 MUNICIPAL MINOR 4952 2328001 0061913 4/30/2021 DELMAR, CITY OF STP 2524 130TH ST DELMAR IA 52037--0175 (563)574-4256 MUNICIPAL MINOR 4952 2421001 0020826 7/31/2022 DELOIT CITY OF STP SOUTH OF TOWN DELOIT IA 51441- (712)263-5118 MUNICIPAL MINOR 4952 5417001 0070742 4/30/2024 DELTA CITY OF STP 300 FT NORTH OF SOUTH 2ND ST E ON CENTER ST, THEN 1/4 MI WEST DELTA IA 52550- (641)624-2061 MUNICIPAL MINOR 4952 2424001 0023302 12/31/2025 DENISON MUNICIPAL UTILITIES-STP 2360 ARROWHEAD RD. DENISON IA 51442- (712)263-5116 MUNICIPAL MAJOR 4952 2424000 0077160 4/30/2023 DENISON MUNICIPAL WTP 14 SOUTH 5TH ST DENISON IA 51442-- (712)263-4458 OPERATION MINOR 4941 5617901 0073326 5/31/2026 DENMARK SANITARY DISTRICT STP NORTH END OF 7TH STREET DENMARK IA 52624- (319)753-8157 MUNICIPAL MINOR 4952 0915001 0044156 2/28/2022 DENVER CITY OF STP 2070 270TH STREET DENVER IA 50622--0394 (319)984-5642 MUNICIPAL MINOR 4952 5909001 0080322 1/31/2024 DERBY CITY OF STP APPROXIMATELY 0.4 MILES NORTH OF PRAIRIE AVE ON 150TH AVE DERBY IA 50068-- MUNICIPAL MINOR 4952 7500123 0053180 9/17/2024 DERBY TRUCKING - LAOP 23517 OLD HIGHWAY 75 MERRILL IA 51038-- OPERATION MINOR 7542 7727137 0076511 5/31/2020 DES MOINES - NAHAS AQUATIC CENTER 1101 PORTER AVENUE DES MOINES IA 50315- (515)237-1652 INDUSTRIAL MINOR 7999 7727008 0075931 4/30/2022 DES MOINES INTERNATIONAL AIRPORT 5800 Fleur Drive DES MOINES IA 50321--2869 (515)256-5100 STORMWATER MINOR 4581 7727001 0044130 2/28/2021 DES MOINES METROPOLITAN WRF 3000 VANDALIA ROAD DES MOINES IA 50317- (515)323-8000 MUNICIPAL MAJOR 4952 7727127 0069671 1/31/2025 DES MOINES TCE SUPERFUND SITE 200 SW 16TH STREET DES MOINES IA 50309- INDUSTRIAL MINOR 3011 2503401 0082104 1/31/2016 DES MOINES WEST KOA (NOW RECREATIONAL ADVENTURES CO.) 34308 L AVENUE ADEL IA 50003-- (515)321-4402 SEMI-PUBLIC MINOR 7032 7727007 0075540 6/30/2024 DES MOINES, CITY OF MS4 400 ROBERT D. RAY DR. DES MOINES IA 50309- (515)323-8037 STORMWATER MINOR 4952 2529001 0056821 3/31/2025 DESOTO CITY OF STP 1/4 MILE EAST OF INTERSECTION OF E. ELM ST. AND WARREN ST. DE SOTO IA 50069- (515)834-2233 MUNICIPAL MINOR 4952 0712901 0063908 10/31/2021 DEWAR SANITARY DISTRICT STP Third Street and Lathrop Street DEWAR IA 50623--0003 (319)234-2704 MUNICIPAL MINOR 4952 2330001 0035271 11/30/2021 DEWITT CITY OF STP 511 S 6TH AVENUE DE WITT IA 52742- (319)659-5369 MUNICIPAL MAJOR 4952 2533001 0058661 2/28/2026 DEXTER CITY OF STP BETWEEN D AVENUE AND DEXFIELD WAY DEXTER IA 50070--0156 (515)789-4210 MUNICIPAL MINOR 4952 8456302 0080349 9/30/2022 DG Farms, Inc. 4695 330TH STREET SHELDON IA 51201-- (712)324-2244 AGRICULTURAL MINOR 0211 8018001 0063401 11/30/2023 DIAGONAL CITY OF STP 0.4 MILE WEST OF SOUTH & 2ND STREET DIAGONAL IA 50845- (641)734-5491 MUNICIPAL MINOR 4952 3900300 0068381 4/30/2024 DIAMONDHEAD LAKE 9137 DIAMONDHEAD DRIVE DEXTER IA 50070- (515)523-2588 SEMI-PUBLIC MINOR 8641 2109001 0080691 1/31/2023 DICKENS WASTEWATER TREATMENT FACILITY SW CORNER OF 280TH AVE & 360TH ST INTERSECTION DICKENS IA 51333-- (712)262-8847 MUNICIPAL MINOR 4952 3800600 0061689 11/30/2024 DIETRICK MOBILE HOME PARK, INC. 34304 160TH ST CEDAR FALLS IA 50613- (319)266-6889 SEMI-PUBLIC MINOR 6515 3815001 0023311 8/31/2025 DIKE CITY OF STP OFF LUITJENS LN., SOUTH OF TOWN DIKE IA 50624- (319)824-2610 MUNICIPAL MINOR 4952 8225001 0033022 2/28/2026 DIXON CITY OF STP 750 FEET FROM CORNER OF CLINTON ST AND BUENA VISTA RD DIXON IA 52745-- (563)843-2883 MUNICIPAL MINOR 4952 2800904 0075876 11/6/2006 DNR BACKBONE STATE PARK (CABINS & SPILLWAY) BETWEEN BEACH & INTERSECT OF 129TH & 132ND STREETS BY SPILLWAY DUNDEE IA 52038- (563)924-2527 SEMI-PUBLIC MINOR 7033 2800903 0066044 11/6/2006 DNR BACKBONE STATE PARK (LOWER AREA) NEAR SOUTH LAKE CAMP 0.7 MI. WEST OF PARK ENTRANCE AT 1347 129TH ST. DUNDEE IA 52038- (563)924-2527 SEMI-PUBLIC MINOR 7033 3500901 0067385 4/30/2025 DNR BEEDS LAKE STATE PARK 1422 165TH STREET HAMPTON IA 50441-- (641)456-2047 SEMI-PUBLIC MINOR 7033 4900900 0066010 12/31/2024 DNR BELLEVUE STATE PARK 21466 429TH AVE BELLEVUE IA 52031-- (563)872-4019 SEMI-PUBLIC MINOR 7033 2200900 0054828 2/28/2025 DNR BIG SPRING TROUT HATCHERY 16212 BIG SPRING ROAD ELKADER IA 52043- (319)245-2446 INDUSTRIAL MINOR 0921 9700800 0063622 6/30/2022 DNR BROWN'S LAKE 3/4 MILE WEST OF I-29 AT SALIX EXIT SALIX IA 51052- (712)423-2426 OPERATION MINOR 9512 9400904 0076945 6/30/2017 DNR BRUSHY CREEK ST. PARK - S.EQUESTRIAN CAMPGROUND 2808 BRUSHY CREEK ROAD LEHIGH IA 50557-- (515)543-8298 SEMI-PUBLIC MINOR 7033 9400903 0074543 6/30/2017 DNR BRUSHY CREEK ST.PARK-N.EQUESTRIAN CAMPGROUND 2808 BRUSHY CREEK ROAD LEHIGH IA 50557- (515)543-8298 SEMI-PUBLIC MINOR 7033 9600901 0054798 2/28/2025 DNR DECORAH STATE HATCHERY 2325 SIEWERS SPRING ROAD DECORAH IA 52101- (563)382-8324 INDUSTRIAL MINOR 0921 4400901 0052732 4/30/2021 DNR GEODE STATE PARK 3333 RACINE AVENUE DANVILLE IA 52623-- (319)392-4601 SEMI-PUBLIC MINOR 7033 0400922 0081221 3/11/2013 DNR HONEY CREEK RESORT STATE PARK 1/4 MILE NORTH OF HIGHWAY J18 AND 175TH AVE. MORAVIA IA 52571-- SEMI-PUBLIC MINOR 7033 0400914 0075949 3/5/2011 DNR HONEY CREEK STATE PARK-(IA.OP.PERMIT) 12194 HONEY CREEK PLACE MORAVIA IA 52571- (641)724-3739 OPERATION MINOR 7033 8900904 0081361 4/30/2018 DNR LACEY KEOSAUQUA STATE PARK 22895 LACEY TRAIL KEOSAUQUA IA 52565-- (319)293-3502 SEMI-PUBLIC MINOR 7033 9100900 0066001 1/21/2008 DNR LAKE AHQUABI STATE PARK 1650 118th Avenue INDIANOLA IA 50125- (515)961-7101 SEMI-PUBLIC MINOR 7033 5200900 0072079 12/31/2024 DNR LAKE MACBRIDE STATE PARK-CAMPGROUND 3525 HIGHWAY 382 NE SOLON IA 52333-- (515)281-5886 SEMI-PUBLIC MINOR 7033 8700902 0075515 7/31/2020 DNR LAKE OF THREE FIRES STATE PARK 2303 LAKE ROAD BEDFORD IA 50833-- (712)523-2700 SEMI-PUBLIC MINOR 7033 2600902 0076694 1/31/2022 DNR LAKE WAPELLO STATE PARK 15248 CAMPGROUND ROAD DRAKESVILLE IA 52552-- (515)281-5886 SEMI-PUBLIC MINOR 7033 0800903 0077127 4/26/2014 DNR LEDGES STATE PARK 1515 P Avenue MADRID IA 50156- (515)281-6157 SEMI-PUBLIC MINOR 7033 2800900 0002275 3/31/2025 DNR MANCHESTER TROUT HATCHERY 22693 205TH AVENUE MANCHESTER IA 52057- (563)927-3276 INDUSTRIAL MINOR 0921 4900903 0076473 6/30/2017 DNR MAQUOKETA CAVES STATE PARK 10970 98TH ST MAQUOKETA IA 52060-- (563)652-5833 SEMI-PUBLIC MINOR 7033 2200902 0075400 7/31/2025 DNR PIKES PEAK STATE PARK-STP 15316 GREAT RIVER RD MCGREGOR IA 52157- (563)873-2341 SEMI-PUBLIC MINOR 7033 4100900 0066028 2/28/2025 DNR PILOT KNOB STATE PARK 2148 340TH ST FOREST CITY IA 50436-- (515)582-4835 SEMI-PUBLIC MINOR 7033 5700402 0078425 1/31/2023 DNR PLEASANT CREEK STATE RECREATION AREA 4530 MCCLINTOCK ROAD PALO IA 52324-- (319)436-7716 SEMI-PUBLIC MINOR 7033 5700403 0078433 1/31/2023 DNR Pleasant Creek State Recreation Area 4530 MCCLINTOCK ROAD PALO IA 52324-- (319)436-7716 SEMI-PUBLIC MINOR 7033 8300900 0077119 7/31/2018 DNR PRAIRIE ROSE STATE PARK 0.4 MILES NW OF ROAD M47 & 660TH ST INTERSECT. HARLAN IA 51537- (712)773-2701 SEMI-PUBLIC MINOR 7033 0400913 0054844 6/30/2024 DNR RATHBUN FISH HATCHERY 15053 HATCHERY PLACE MORAVIA IA 52571- (641)647-2406 SEMI-PUBLIC MINOR 0921 9700401 0063631 6/30/2022 DNR SNYDER-WINNEBAGO LAKE STP SNYDER BEND ROAD SOUTH OF HIGHWAY K25 SALIX IA 51052- (712)423-2426 OPERATION MINOR 9512 3900900 0075272 8/31/2023 DNR SPRINGBROOK STATE PARK-EDUCATION CENTER 2473 160TH ROAD GUTHRIE CENTER IA 50115- (641)747-8383 SEMI-PUBLIC MINOR 8211 6900900 0066036 5/31/2026 DNR VIKING LAKE STATE PARK 2780 VIKING LAKE ROAD STANTON IA 51573-- (712)829-2235 SEMI-PUBLIC MINOR 7033 3300902 0082317 11/30/2014 DNR VOLGA RIVER RECREATIONAL AREA WWTP IVY ROAD & I AVENUE FAYETTE IA 52142-- SEMI-PUBLIC MINOR 7033 3215001 0082147 10/31/2025 DOLLIVER, CITY OF STP Lots 1-2 Blk 7 - S of Int. of Main St & School St. DOLLIVER IA 50531-- MUNICIPAL MINOR 4952 8227001 0029017 12/31/2022 DONAHUE CITY OF STP 1/4 MILE WEST OF MAIN ST. & 3RD AVE. DONAHUE IA 52746--0079 (563)282-4161 MUNICIPAL MINOR 4952 5620001 0035335 5/31/2024 DONNELLSON CITY OF STP 1/2 MILE WEST OF SOUTH MAIN STREET ON PETERIE DRIVE DONNELLSON IA 52625- (319)835-5714 MUNICIPAL MINOR 4952

5 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Facility Address Facility City Facility Facility Zip Facility Phone Permit Type Class. SIC State Code 6015001 0023736 7/31/2023 DOON CITY OF STP GARFIELD AVE. 1/4 MILE SOUTH OF 260TH ST. DOON IA 51235--0037 (712)726-9303 MUNICIPAL MINOR 4952 8926001 0076031 2/28/2026 DOUDS/LEANDO,CITY OF(RATHBUN REGIONAL WATER ASSOC) WASHINGTON ST. & EMERALD RD., SOUTHWEST OF LEANDO DOUDS IA 52544- (641)473-7023 MUNICIPAL MINOR 4952 2427001 0034371 4/30/2023 DOW CITY, CITY OF STP 1/3 MILE N of FULTON ST INTERSECTION & W on KENWOOD RD DOW CITY IA 51528- (712)674-3350 MUNICIPAL MINOR 4952 9921001 0042811 6/30/2024 DOWS CITY OF STP SOUTH OF TOWN AT END OF HAYES STREET DOWS IA 50071- (515)852-4315 MUNICIPAL MINOR 4952 2618001 0075612 1/31/2026 DRAKESVILLE, CITY OF-(RATHBUN REGIONAL WATER ASSOC.) HIGHWAY 273 EAST OF TOWN DRAKESVILLE IA 52544- (641)473-7023 MUNICIPAL MINOR 4952 8464489 0083054 4/30/2025 Dry Creek Farms, Inc. 2722 350th Street ROCK VALLEY IA 51247-- (712)722-1532 AGRICULTURAL MINOR 0241 3126001 0044458 10/31/2024 DUBUQUE CITY OF STP 795 JULIEN DUBUQUE DRIVE DUBUQUE IA 52001-- (563)589-4176 MUNICIPAL MAJOR 4952 3126901 0081876 2/29/2024 DUBUQUE COUNTY COURTHOUSE 720 CENTRAL AVE DUBUQUE IA 52001--7079 (563)589-4479 INDUSTRIAL MINOR 9199 3126902 0081884 6/30/2024 DUBUQUE COUNTY SHERIFF OFFICE 770 IOWA ST DUBUQUE IA 52001-- INDUSTRIAL MINOR 9221 3100804 0082031 4/30/2024 DUBUQUE RESIDENTIAL FACILITY 1494 ELM STREET DUBUQUE IA 52001--4955 (563)556-6196 INDUSTRIAL MINOR 9223 3126004 0078671 10/31/2024 DUBUQUE, CITY OF MS4 50 W 13TH ST DUBUQUE IA 52001-- (563)589-4276 STORMWATER MINOR 4952 1240001 0033316 12/31/2022 DUMONT CITY OF STP 1/4 MILE SOUTH OF COUNTY ROAD T16 & IOWA HWY 3 INT DUMONT IA 50625- (641)857-3411 MUNICIPAL MINOR 4952 4100901 0065901 4/30/2026 DUNCAN HEIGHTS CARE FACILITY 1465 HIGHWAY 18 W GARNER IA 50438--9619 (515)923-3337 SEMI-PUBLIC MINOR 8051 9427001 0027413 2/28/2026 DUNCOMBE CITY OF STP NORTH OF INTERSECT. OF BOISE AND CEDAR STREETS DUNCOMBE IA 50532- (515)543-5716 MUNICIPAL MINOR 4952 2821001 0062839 7/31/2022 DUNDEE CITY OF STP 1/2 MILE NORTH OF 145TH STREET ON 127TH AVE. DUNDEE IA 52038- (563)924-2162 MUNICIPAL MINOR 4952 0717001 0042790 12/31/2022 DUNKERTON CITY OF STP OFF HWY 281 NORTH OF TOWN DUNKERTON IA 50626- (319)822-4247 MUNICIPAL MINOR 4952 4316001 0042871 8/31/2023 DUNLAP CITY OF STP WEST OF HWY 30, SOUTHWEST OF TOWN DUNLAP IA 51529- (712)643-5721 MUNICIPAL MINOR 4952 7036001 0064891 7/31/2022 DURANT CITY OF STP OFF OF 8TH AVE., SOUTH OF TOWN DURANT IA 52747--0818 (563)785-6371 MUNICIPAL MINOR 4952 3130001 0023345 4/30/2025 DYERSVILLE CITY OF STP 551 23RD AVE. SE DYERSVILLE IA 52040- (319)875-7724 MUNICIPAL MAJOR 4952 8627001 0020745 6/30/2022 DYSART CITY OF STP SOUTHWEST OF TOWN NEAR INTERSECTION OF FARM RD. AND 200TH ST. DYSART IA 52224- (515)476-5690 MUNICIPAL MINOR 4952 9926001 0034380 11/30/2024 EAGLE GROVE, CITY OF STP 1342 SW 9TH STREET EAGLE GROVE IA 50533--0165 (515)448-3335 MUNICIPAL MAJOR 4952 6115001 0027421 8/31/2024 EARLHAM CITY OF STP 140 S. CHESTNUT EARLHAM IA 50072- (515)758-2157 MUNICIPAL MINOR 4952 8320001 0025364 7/31/2026 EARLING CITY OF STP >6100 FEET SW OF THE INTERSECTION OF HWY 37 AND HWY 191 EARLING IA 51530- (712)747-3751 MUNICIPAL MINOR 4952 2825001 0042773 4/30/2025 EARLVILLE CITY OF STP 600 FEET SOUTH OF INTERSECT. OF 5TH AND RADCLIFFE STREETS EARLVILLE IA 52041- (563)923-3365 MUNICIPAL MINOR 4952 8114001 0035904 5/31/2025 EARLY CITY OF STP 1/4 MILE SOUTH OF SOUTH AVE. AND CRESTVIEW DR. EARLY IA 50535- (712)273-5283 MUNICIPAL MINOR 4952 4800401 0075213 7/31/2026 EAST IOWA BIBLE CAMP-STP 1433 F52 TRAIL DEEP RIVER IA 52222- (319)655-7693 SEMI-PUBLIC MINOR 8211 6122001 0079791 9/30/2022 EAST PERU CITY OF STP (WARREN WATER DISTRICT) 1/4 MILE S OF RUSTIC AVE & 285TH LANE INTERSECTION EAST PERU IA 50222-- (515)962-1200 MUNICIPAL MINOR 4952 8456490 0078107 9/30/2022 East Valley Farm, Inc. (Site 1) 3319 GARFIELD AVENUE ROCK VALLEY IA 51247-- (712)476-5133 AGRICULTURAL MINOR 0211 2900605 0068241 5/31/2023 ECHO VALLEY MOBILE HOME PARK NO. 2 14876 WASHINGTON ROAD, LOT 117 WEST BURLINGTON IA 52655- (440)838-4868 SEMI-PUBLIC MINOR 6515 2900601 0067725 3/24/2003 ECHO VALLEY MOBILE HOME PARK NO.1 14876 WASHINGTON RD WEST BURLINGTON IA 52655- (319)752-2344 SEMI-PUBLIC MINOR 6515 9049001 0020770 1/31/2022 EDDYVILLE, CITY OF STP US HWY 63 & 182ND ST EDDYVILLE IA 52553- (641)969-4267 MUNICIPAL MINOR 4952 5000600 0067717 3/31/2025 EDGETOWN MOBILE HOME PARK 3044 HWY 14 N NEWTON IA 50208--8696 (641)792-9358 SEMI-PUBLIC MINOR 6515 2820001 0024490 6/30/2022 EDGEWOOD CITY OF STP 203 WEST UNION EDGEWOOD IA 52042- (563)928-6842 MUNICIPAL MINOR 4952 3087101 0053277 1/31/2023 EDGEWOOD DR. INFRASTRUCTURE IMPROVEMENTS ALONG EDGEWOOD DR. FROM HWY 86 TO BURR OAK RD. WAHPETON IA 51351-- STORMWATER MINOR 1629 3126118 0076821 11/30/2022 EDWARDS CAST STONE COMPANY 777 EDWARDS ROAD DUBUQUE IA 52003--8500 (563)556-0535 INDUSTRIAL MINOR 3272 8456276 0079189 9/30/2025 Eilts Feedlot 2540 450TH STREET IRETON IA 51027-- (712)278-2417 AGRICULTURAL MINOR 0211 9400114 0070661 11/30/2022 ELANCO FORT DODGE 800 5th. Street NW FORT DODGE IA 50501-- (515)302-2538 INDUSTRIAL MINOR 2834 8631001 0061964 4/30/2016 ELBERON CITY OF STP SOUTH OF HWY E44, WEST OF TOWN ELBERON IA 52225- (319)439-5341 MUNICIPAL MINOR 4952 9053001 0022306 8/31/2024 ELDON CITY OF STP APPROX. 1/2 MILE SOUTHEAST OF WATER ST. ELDON IA 52554--0367 (515)652-7510 MUNICIPAL MINOR 4952 4236001 0025933 7/31/2025 ELDORA CITY OF STP 210 14TH AVENUE ELDORA IA 50627-- (641)939-2393 MUNICIPAL MAJOR 4952 8230003 0063231 10/31/2025 ELDRIDGE CITY OF STP (SOUTH SLOPE) 601 EAST TRAILS RD ELDRIDGE IA 52748--0375 (319)285-4841 MUNICIPAL MAJOR 4952 8230004 0084468 7/31/2024 ELDRIDGE, CITY OF MS4 CITY OF ELDRIDGE ELDRIDGE IA 52748-- STORMWATER MINOR 4952 3338001 0024414 1/31/2022 ELGIN CITY OF STP NORTHEAST OF TOWN ELGIN IA 52141- (319)426-5998 MUNICIPAL MINOR 4952 1500106 0052718 5/31/2022 ELITE OCTANE, LLC 60502 GLACIER RD ATLANTIC IA 50022--8275 INDUSTRIAL MINOR 2869 8325001 0027677 8/31/2026 ELK HORN CITY OF STP 2300 FEET SW OF STREET F58 AND HWY 173 INTERSECTION ELK HORN IA 51531- (712)764-6041 MUNICIPAL MINOR 4952 0721001 0034231 4/30/2023 ELK RUN HEIGHTS CITY OF STP 1620 SOUTH ELK RUN ROAD ELK RUN HEIGHTS IA 50707- (319)236-1578 MUNICIPAL MINOR 4952 0721002 0078280 4/30/2025 ELK RUN HEIGHTS, CITY OF MS4 5042 LAFAYETTE ROAD ELK RUN HEIGHTS IA 50707-- (319)232-0020 STORMWATER MINOR 4952 2223001 0021962 4/30/2022 ELKADER CITY OF STP 26258 HIGWAY 13 ELKADER IA 52043-- (563)245-2098 MUNICIPAL MINOR 4952 7730001 0021326 9/30/2019 ELKHART CITY OF STP NE OF NE MEGAN AVE AND NE ELM ST ELKHART IA 50073- (515)367-4735 MUNICIPAL MINOR 4952 7825001 0034398 2/25/2012 ELLIOTT CITY OF STP NORTH OF TOWN OFF OF 535TH STREET ELLIOTT IA 51532--9998 (712)767-2351 MUNICIPAL MINOR 4952 4009001 0026280 8/31/2022 ELLSWORTH CITY OF STP 1/2 MILE SE OF 330TH ST & TOLLMAN AVE INTERSECTION ELLSWORTH IA 50075- (515)836-4751 MUNICIPAL MINOR 4952 4525001 0021075 5/31/2024 ELMA CITY OF STP 0.1 MILES W OF THE 9TH ST & MAPLE ST INTERSECTION ELMA IA 50628- (641)330-2644 MUNICIPAL MINOR 4952 2334901 0062791 7/31/2016 ELWOOD COMMUNITY SANITARY DISTRICT 129 TH ST & IA HIGHWAY 136 ELWOOD IA 52254--0031 (563)678-2429 MUNICIPAL MINOR 4952 5728001 0047988 12/31/2022 ELY CITY OF STP APPROX 1/3 MILE SE OF 1124 VISTA RD ELY IA 52227-- (319)848-4103 MUNICIPAL MINOR 4952 5728002 0084476 6/30/2024 ELY, CITY OF MS4 CITY OF ELY ELY IA 52227-- STORMWATER MINOR 4952 6520001 0024562 4/30/2023 EMERSON CITY OF STP 1/4 MILE SW OF EDWARDS ST & SOUTH AVE INTERSECTION EMERSON IA 51533- (712)824-7866 MUNICIPAL MINOR 4952 7428002 0021580 10/31/2025 EMMETSBURG CITY OF STP 4552 BURNS ROAD EMMETSBURG IA 50536- (712)852-4030 MUNICIPAL MAJOR 4952 3133001 0036463 1/31/2026 EPWORTH CITY OF STP 9834 BIERMAN ROAD EPWORTH IA 52045- (563)876-3320 MUNICIPAL MINOR 4952 2326112 0000191 12/31/2022 EQUISTAR CHEMICALS, LP 3400 ANAMOSA ROAD CLINTON IA 52732-- (563)244-2280 INDUSTRIAL MAJOR 2821 8222108 0060305 4/30/2022 ESCP CORPORATION 1833 WEST SECOND STREET DAVENPORT IA 52802--1616 (563)322-1400 INDUSTRIAL MINOR 3469 7349001 0026603 3/23/2008 ESSEX CITY OF STP 1480 AIRPORT RD. ESSEX IA 51638--0428 (712)379-3444 MUNICIPAL MINOR 4952 3218002 0023744 12/31/2025 ESTHERVILLE CITY OF STP 1878 HIGHWAY 4 ESTHERVILLE IA 51334-- (712)362-4162 MUNICIPAL MAJOR 4952 0723001 0022004 8/31/2022 EVANSDALE CITY OF STP 1212 RIVER FORREST ROAD EVANSDALE IA 50707- (319)233-4062 MUNICIPAL MAJOR 4952 0723002 0078654 1/31/2026 EVANSDALE, CITY OF MS4 123 N EVANS RD EVANSDALE IA 50707-- (319)232-6683 STORMWATER MINOR 4952 5715121 0003093 11/30/2020 EVERGREEN PACKAGING LLC 2400 6TH STREET S.W. CEDAR RAPIDS IA 52404-- (319)399-3200 INDUSTRIAL MINOR 3556 2115001 0028916 5/31/2022 EVERLY CITY OF STP EAST OF TOWN ON CORNER OF E ST. MARYS ST. (AKA 340TH ST.) AND 140TH AVE. EVERLY IA 51338--0329 (712)834-2691 MUNICIPAL MINOR 4952 0520001 0027987 1/31/2022 EXIRA CITY OF STP 0.7 MILES SOUTH OF WASHINGTON ST & US 71 INTERSECT EXIRA IA 50076-- (712)268-2187 MUNICIPAL MINOR 4952 0426001 0074381 2/28/2015 Exline, City of, STP LANE ST & 3RD ST EXLINE IA 52544--8307 (641)647-2416 MUNICIPAL MINOR 4952 1025001 0035041 10/31/2021 FAIRBANK CITY OF STP SOUTH OF TOWN OFF OF BUTLER AVE. FAIRBANK IA 50629- (319)635-2869 MUNICIPAL SIGNIFICANT MINOR 4952 5131101 0001074 4/30/2022 FAIRCAST INC. 905 W DEPOT AVE FAIRFIELD IA 52556--2563 (515)472-5131 INDUSTRIAL MINOR 3582 5731001 0030694 7/31/2024 FAIRFAX CITY OF STP 480 FRONT STREET FAIRFAX IA 52228- (319)846-2204 MUNICIPAL MINOR 4952 5131000 0082325 9/30/2025 FAIRFIELD WATERWORKS 700 WATERWORKS ROAD FAIRFIELD IA 52556-- (641)472-2358 MUNICIPAL-WT MINOR 4941 5131001 0035076 5/31/2026 FAIRFIELD, CITY OF STP 118 SOUTH MAIN FAIRFIELD IA 52556--0850 (515)472-5218 MUNICIPAL MAJOR 4952 8462532 0078379 5/31/2025 Fairview Feeders 1335 290th St INWOOD IA 51240-- (712)986-4156 AGRICULTURAL MINOR 0211 5322001 0082929 6/30/2021 FAIRVIEW, COMMUNITY OF SOUTHEAST OF U.S. HIGHWAY 151 & 230TH AVENUE ANAMOSA IA 52205-- (563)556-4166 MUNICIPAL MINOR 4952 3135001 0044032 4/30/2025 FARLEY CITY OF STP 900 1ST STREET NW FARLEY IA 52046-- (563)744-9180 MUNICIPAL MINOR 4952 2228001 0028495 9/30/2021 FARMERSBURG CITY OF STP .45 MILES EAST OF S. ROOSEVELT ST AND HWY 182ND ST INTERSECTION FARMERSBURG IA 52047- (563)536-2220 MUNICIPAL MINOR 4952 8930001 0060313 9/30/2022 FARMINGTON CITY OF STP 203 ELM STREET FARMINGTON IA 52626- (319)878-3711 MUNICIPAL MINOR 4952 1320001 0028967 2/28/2023 FARNHAMVILLE CITY OF STP OFF OF COMMERCIAL ST., SOUTH OF TOWN FARNHAMVILLE IA 50538- (515)544-3661 MUNICIPAL MINOR 4952 3615001 0023493 10/31/2022 FARRAGUT CITY OF STP MANTI ROAD & COUNTY HIGHWAY M16 FARRAGUT IA 51639- (712)385-8660 MUNICIPAL MINOR 4952 3342001 0027456 8/31/2024 FAYETTE CITY OF STP 0.7 MILES EAST AND SE OF LIMA ROAD AND BIG ROCK ROAD INTERSECT FAYETTE IA 52142--0028 (319)425-3220 MUNICIPAL MINOR 4952 5100201 0075906 12/31/2024 FBP, LLC 1680 HWY 1, SUITE 1750 FAIRFIELD IA 52556- (515)472-8301 SEMI-PUBLIC MINOR 5942 5515001 0081396 4/30/2016 FENTON CITY OF STP APPROX. 0.11 MI. S. OF INTERSECT. 310 ST & 20 AVE FENTON IA 50539-- (515)889-2887 MUNICIPAL MINOR 4952 9820001 0058718 3/31/2026 FERTILE CITY OF STP 0.3 MILES EAST OF 3RD ST. & E MAIN ST. INTERSECTION FERTILE IA 50434-- (641)797-2121 MUNICIPAL MINOR 4952 9600302 0075442 10/31/2021 FESTINA-WINNESHIEK COUNTY-STP 201 WEST MAIN STREET FESTINA IA 52144- (319)382-5085 MUNICIPAL MINOR 4952 3937900 0076465 6/30/2022 FIREFLY CREEK RANCH 2345 REDWOOD AVENUE GUTHRIE CENTER IA 50115-- (515)554-5489 SEMI-PUBLIC MINOR 8051 7700100 0000671 9/3/2008 FIRESTONE AGRICULTURAL TIRE CO. 2ND AVE & HOFFMAN ROAD DES MOINES IA 50305- (515)243-1211 INDUSTRIAL MINOR 3011 6469102 0000230 9/30/2024 FISHER CONTROLS INTERNATIONAL LLC (MAIN OFFICE) 301 SOUTH 1ST AVENUE MARSHALLTOWN IA 50158-- (641)691-0900 INDUSTRIAL MINOR 6512 9768119 0052174 2/28/2022 Fleck Farms Feedlot 3798 240th Street ANTHON IA 51004-- (712)373-5555 AGRICULTURAL MINOR 0211

6 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Facility Address Facility City Facility Facility Zip Facility Phone Permit Type Class. SIC State Code 4200121 0078841 2/28/2015 FLINT HILLS RESOURCES (NOW POET BIOREFINING - IOWA FALLS, LLC) 21050 140TH STREET IOWA FALLS IA 50126-- (641)648-8913 INDUSTRIAL MINOR 2869 3900903 0081311 1/14/2013 FLINT HILLS RESOURCES MENLO (NOW POET BIOREFINING - MENLO) 2869 335TH STREET MENLO IA 50164-- (641)524-5665 INDUSTRIAL MINOR 2869 2622000 0074047 1/31/2016 FLORIS, CITY OF- (WAPELLO RURAL WATER ASSN.) 12007 QUAIL AVE FLORIS IA 52560-- (641)682-8351 MUNICIPAL MINOR 4952 3414001 0028894 10/31/2024 FLOYD CITY OF STP 2500 155th Street FLOYD IA 50435--0159 (641)398-2857 MUNICIPAL MINOR 4952 4000201 0082309 11/30/2025 FLYING J NO. 572 3040 220TH ST WILLIAMS IA 50271-- (865)474-2826 SEMI-PUBLIC MINOR 5541 8222201 0074110 6/30/2025 FLYING J TRAVEL PLAZA NO. 636 - DAVENPORT 8200 NW BLVD DAVENPORT IA 52809- STORMWATER MINOR 5541 7603002 0046671 1/31/2022 FONDA CITY OF STP EAST OF TOWN ON 630TH STREET FONDA IA 50540- (712)288-4466 MUNICIPAL MINOR 4952 0135001 0041840 6/30/2023 FONTANELLE CITY OF STP SW OF TOWN OFF FONTANELLE RD (N72) FONTANELLE IA 50846- (641)745-3961 MUNICIPAL MINOR 4952 9525001 0021563 4/30/2025 FOREST CITY CITY OF STP 1890 RIVER ROAD FOREST CITY IA 50436- (641)581-2341 MUNICIPAL MAJOR 4952 9641001 0072176 1/31/2024 FORT ATKINSON CITY OF STP 2685 HWY 24 FORT ATKINSON IA 52144-- (563)534-3029 MUNICIPAL MINOR 4952 9433003 0044849 9/30/2025 FORT DODGE CITY OF STP 1801 AVENUE O FORT DODGE IA 50501-- (515)955-8597 MUNICIPAL MAJOR 4952 5625001 0027219 9/30/2024 FORT MADISON CITY OF STP 1621 20TH STREET FORT MADISON IA 52627-- (319)372-5421 MUNICIPAL MAJOR 4952 5625000 0081001 1/31/2024 FORT MADISON WATER TREATMENT PLANT 2489 280TH ST MONTROSE IA 52639-- (319)463-5200 MUNICIPAL-WT MINOR 4941 2122001 0061841 8/31/2023 FOSTORIA CITY OF STP 290TH ST. 0.4 MILE EAST OF US HIGHWAY 71 FOSTORIA IA 51340- (712)262-8930 MUNICIPAL MINOR 4952 5710801 0076732 9/30/2025 FOUR OAKS GROUP HOME - BERTRAM CAMPUS 1341 BERTRAM ST. BERTRAM IA 52403-- (319)364-1216 SEMI-PUBLIC MINOR 8361 1940001 0028991 1/26/2008 FREDERICKSBURG CITY OF STP OFF OF QUINLAN AVE., NW OF TOWN FREDERICKSBURG IA 50630- (563)237-5392 MUNICIPAL MINOR 4952 0922001 0058939 7/31/2024 FREDERIKA CITY OF STP 0.2 MILES SE OF THE 5TH ST. & 4TH AVE INTERSECT. FREDERIKA IA 50631- (319)275-4579 MUNICIPAL MINOR 4952 6234001 0056791 3/31/2017 FREMONT CITY OF STP 1/2 MILE WEST OF 310TH ST & S MILES ST INTERSECTION FREMONT IA 52561- (641)933-4317 MUNICIPAL MINOR 4952 7900104 0083577 5/31/2024 FREMONT FARMS OF IOWA L.L.P. - LAOP 3868 110TH STREET MALCOM IA 50157--8093 OPERATION MINOR 2015 4715001 0056537 6/30/2026 GALVA CITY OF STP 116 S. MAIN ST GALVA IA 51020--0102 (712)282-4228 MUNICIPAL MINOR 4952 2725001 0069175 10/31/2022 GARDEN GROVE CITY OF STP 0.3 MILES N OF TIFFIN ST & ARVILLA ST INTERSECTION GARDEN GROVE IA 50103- (641)443-2965 MUNICIPAL MINOR 4952 2234001 0026697 4/2/2008 GARNAVILLO CITY OF STP OFF OF SOUTH INDUSTRIAL RD., SOUTH SIDE OF TOWN GARNAVILLO IA 52049- (319)964-2331 MUNICIPAL MINOR 4952 4130002 0036153 2/29/2024 GARNER CITY OF STP 1/4 MILE EAST OF SEYMOUR AVE ON LYON ST, THEN 1/2 MI SOUTH GARNER IA 50348- (641)923-2588 MUNICIPAL MINOR 4952 0625001 0056804 5/31/2023 GARRISON CITY OF STP 1828 61ST STREET GARRISON IA 52229- (319)551-0551 MUNICIPAL MINOR 4952 8637001 0025925 6/30/2020 GARWIN CITY OF STP 0.2 MILES SOUTH OF THE FRONT ST. & 3RD ST. INTERSECTION GARWIN IA 50632- (641)751-1115 MUNICIPAL MINOR 4952 1856935 0084042 7/31/2024 Gary Rupp Combined Operation 6141 E Ave MARCUS IA 51035-- (712)447-6409 AGRICULTURAL MINOR 0211 2900901 0065447 7/31/2025 GATEWAY CENTER CARE FACILITY-STP 13702 WASHINGTON ROAD WEST BURLINGTON IA 52655- (319)753-8232 SEMI-PUBLIC MINOR 8051 5200201 0074985 3/31/2024 GATEWAY COMMERCIAL CONDOMINIUM ASSOCIATION 4914 DOLPHIN DRIVE SE, UNIT A IOWA CITY IA 52240- SEMI-PUBLIC MINOR 8641 6066047 0082058 8/31/2025 Gaylon Rozeboom Feedlot 2548 180th Street ROCK RAPIDS IA 51246-- (712)473-2486 AGRICULTURAL MINOR 0211 9700101 0004413 1/31/2023 GELITA USA, INC. 2445 Port Neal Rd SERGEANT BLUFF IA 51054-- (712)943-5516 INDUSTRIAL MAJOR 2099 7700121 0052209 10/31/2024 GENERAL MILLS AVON PLANT 6101 SE 52ND ST. CARLISLE IA 50047-- OPERATION MINOR 2041 6028001 0036081 9/30/2022 GEORGE CITY OF STP 0.8 MILES SE OF JEFFERSON AVE & 215TH ST GEORGE IA 51237- (712)475-3612 MUNICIPAL MINOR 4952 7078101 0061972 5/31/2022 GERDAU 1500 W 3RD ST WILTON IA 52778 (563)732-4650 INDUSTRIAL MINOR 3312 8531001 0025968 5/31/2025 GILBERT, CITY OF STP 17492 GW CARVER AVEUNE GILBERT IA 50105--0029 (515)233-2670 MUNICIPAL MINOR 4952 0733001 0028177 5/31/2022 GILBERTVILLE CITY OF STP 6112 GILBERTVILLE RD. S GILBERTVILLE IA 50634-- (319)296-1822 MUNICIPAL MINOR 4952 6436001 0029033 9/30/2022 GILMAN CITY OF STP OFF OF 330TH STREET, WEST OF TOWN GILMAN IA 50106--0157 (515)498-2531 MUNICIPAL MINOR 4952 7607001 0031194 10/31/2018 GILMORE CITY, CITY OF STP 520TH & GILMORE ST GILMORE CITY IA 50541--0276 (515)373-6326 MUNICIPAL MINOR 4952 8640001 0025330 12/31/2022 GLADBROOK CITY OF STP NE OF GLADBROOK & EAST OF EAST ST GLADBROOK IA 50635- (641)473-2582 MUNICIPAL MINOR 4952 1438001 0024571 4/30/2021 GLIDDEN CITY OF STP CITY CLERK, CITY HALL GLIDDEN IA 51443- (712)659-2200 MUNICIPAL MINOR 4952 6525001 0021946 10/31/2024 GMU WASTEWATER TREATMENT FACILITY 60506 KESTERSON ROAD GLENWOOD IA 51534-- (712)527-4941 MUNICIPAL MAJOR 4952 1700127 0078735 10/31/2022 GOLDEN GRAIN ENERGY, LLC 1822 43rd St SW MASON CITY IA 50401-- (641)423-8525 INDUSTRIAL MINOR 2869 9937001 0036137 7/31/2018 GOLDFIELD CITY OF STP NORTH SIDE OF HWY 3, 1/4 MILE WEST OF CITY LIMITS GOLDFIELD IA 50542- (515)825-3613 MUNICIPAL MINOR 4952 2339001 0056944 7/31/2021 GOOSE LAKE CITY OF STP 234 MAIN ST GOOSE LAKE IA 52750- (563)249-1026 MUNICIPAL MINOR 4952 9436001 0020966 6/30/2024 GOWRIE MUNICIPAL UTILITIES 1150 FEET SOUTH OF 355TH ST INTERSECTION ON FAIRBANKS AVENUE GOWRIE IA 50543-- (515)352-3065 MUNICIPAL MINOR 4952 7445001 0027821 10/31/2022 GRAETTINGER CITY OF STP SW OF 435 AVE & 280 ST INTERSECTION GRAETTINGER IA 51342-- (712)859-3934 MUNICIPAL MINOR 4952 9825001 0062529 8/31/2022 GRAFTON CITY OF STP APPROX. 0.14 MILES SOUTH OF 390TH ST. AND 1ST AVE. GRAFTON IA 50440- (641)748-2970 MUNICIPAL MINOR 4952 7048101 0003441 6/30/2021 GRAIN PROCESSING CORPORATION 1600 OREGON STREET MUSCATINE IA 52761- (563)264-4704 INDUSTRIAL MAJOR 2869 3100605 0063240 12/2/2006 GRANADA GARDENS MOBILE HOME PARK 11941 RT 52 N DUBUQUE IA 52002- (563)552-2494 SEMI-PUBLIC MINOR 6515 6000201 0083348 3/31/2016 GRAND FALLS CASINO RESORT 1415 GRAND FALLS BLVD LARCHWOOD IA 51241-- (712)777-7777 SEMI-PUBLIC MINOR 7993 3730001 0041891 1/31/2022 GRAND JUNCTION CITY OF STP EASTERN EDGE OF TOWN AT 20TH STREET GRAND JUNCTION IA 50107--0015 (515)738-2585 MUNICIPAL MINOR 4952 2341001 0027642 12/31/2024 GRAND MOUND CITY OF STP 1/2 MILE SOUTH OF SUNNYSIDE ST & WILLIAMS ST GRAND MOUND IA 52751- (319)847-2190 MUNICIPAL MINOR 4952 2760056 0077712 9/30/2024 Grand River Cattle Co, LLC 12011 205th St GRAND RIVER IA 50108-- (641)783-2514 AGRICULTURAL MINOR 0211 3126121 0077399 5/31/2026 GRAND RIVER CENTER 350 BELL STREET DUBUQUE IA 52001- (563)589-4152 INDUSTRIAL MINOR 8999 2728001 0066346 10/31/2022 GRAND RIVER CITY OF STP 0.35 MILES NE OF 125TH AVE & COUNTY HWY J20 INTERSECT GRAND RIVER IA 50108- (641)447-2527 MUNICIPAL MINOR 4952 5842001 0062901 2/28/2025 GRANDVIEW CITY OF STP ON 145TH STREET SOUTH OF TOWN GRANDVIEW IA 52752- (319)729-2721 MUNICIPAL MINOR 4952 2537001 0041912 7/31/2021 GRANGER CITY OF STP 1906 MAIN STREET GRANGER IA 50109- (515)999-2210 MUNICIPAL MINOR 4952 8429001 0043486 12/31/2022 GRANVILLE CITY OF STP MARSH AVE 1/4 MILE NORTH OF MAIN ST GRANVILLE IA 51022- (712)727-3365 MUNICIPAL MINOR 4952 8728001 0075957 2/28/2015 GRAVITY, CITY OF (SOUTHERN IOWA RURAL WATER ASSN.) 0.6 MILES W OF 200TH ST & JERICO AVE INTERSECT GRAVITY IA 50848-- (641)782-5744 MUNICIPAL MINOR 4952 7700119 0077941 4/30/2022 GREATER DES MOINES ENERGY CENTER 4401 CARLISLE ROAD PLEASANT HILL IA 50327--1300 (515)252-6887 INDUSTRIAL MAJOR 4911 2831001 0040291 10/31/2022 GREELEY CITY OF STP OFF HWY 38, SOUTH OF TOWN GREELEY IA 52050- (563)349-6424 MUNICIPAL MINOR 4952 2900603 0067733 6/28/2014 GREEN ACRES MOBILE HOME PARK 11912 HWY. 99 BURLINGTON IA 52601- (319)753-1822 SEMI-PUBLIC MINOR 6515 6440001 0048236 5/31/2026 GREEN MOUNTAIN - IOWA REGIONAL UTILITIES ASSOC. 0.2 MILES WEST OF INTERSECTION OF GREEN MOUNTAIN ROAD AND WALLACE AVE GARWIN IA 50632-- MUNICIPAL MINOR 4952 3600102 0082210 4/30/2026 GREEN PLAINS SHENANDOAH, LLC 4124 AIRPORT ROAD SHENANDOAH IA 51601-- (712)246-2932 INDUSTRIAL MINOR 2869 3000105 0081281 10/31/2023 GREEN PLAINS SUPERIOR, LLC 1495 320TH AVE SUPERIOR IA 51363-- (712)858-4666 INDUSTRIAL MINOR 2869 8800100 0003964 4/30/2016 GREEN VALLEY CHEMICAL CORPORATION 1284 N. CHERRY STREET ROAD CRESTON IA 50801- (641)782-7041 INDUSTRIAL MINOR 2873 1253001 0035432 6/30/2026 GREENE CITY OF STP INTERSECTION OF 2ND ST & SANDHILL RD GREENE IA 50636--0471 (515)823-4631 MUNICIPAL MINOR 4952 0140001 0021369 9/30/2019 GREENFIELD CITY OF STP SOUTH END OF SE 4TH STREET GREENFIELD IA 50849- (641)743-2334 MUNICIPAL MAJOR 4952 0140000 0048453 12/31/2021 GREENFIELD MUNICIPAL UTILITIES WTP 202 SOUTH 1ST ST. GREENFIELD IA 50849-- MUNICIPAL-WT MINOR 4941 2133001 0079260 6/30/2021 GREENVILLE, CITY OF STP 1105 Goulding Ave GREENVILLE IA 51343-- (712)262-6854 MUNICIPAL MINOR 4952 6556217 0077909 8/31/2021 Gregory Feedlots North, Inc. 66592 US Highway 275 TABOR IA 51653-- (712)625-2311 AGRICULTURAL MINOR 0211 3663404 0079804 10/31/2021 Gregory Feedlots, Inc. (South Site) 1164 305th Ave. TABOR IA 51653-- (712)625-2311 AGRICULTURAL MINOR 0211 7736002 0078883 12/31/2024 GRIMES, CITY OF MS4 101 N. HARVEY ST. GRIMES IA 50111-- (515)986-3036 STORMWATER MINOR 4952 7736001 0035939 1/31/2021 GRIMES, CITY OF STP 1801 N. JAMES ST. GRIMES IA 50111- (515)986-3176 MUNICIPAL MAJOR 4952 7930001 0031186 12/31/2024 GRINNELL, CITY OF STP 3976 20th Street GRINNELL IA 50112-- (515)236-6302 MUNICIPAL MAJOR 4952 1528001 0031411 4/30/2022 GRISWOLD CITY OF STP 69321 540TH STREET GRISWOLD IA 51535- (712)778-2615 MUNICIPAL MINOR 4952 6056953 0080900 8/31/2023 Groeneweg Livestock Facility 1131 Chestnut Ave. LARCHWOOD IA 51241-- (712)982-5816 AGRICULTURAL MINOR 0211 3833001 0024511 8/31/2024 GRUNDY CENTER CITY OF STP EAST OF TOWN OFF C AVENUE GRUNDY CENTER IA 50638--1450 (319)824-3113 MUNICIPAL MAJOR 4952 3225001 0077488 8/31/2023 GRUVER CITY OF 1/2 MILE E OF AGRICULTURE AVE & 450TH AVE INTERSEC GRUVER IA 51344-- (712)262-8847 MUNICIPAL MINOR 4952 3937001 0041866 10/31/2022 GUTHRIE CENTER CITY OF STP 1 MILE NE OF THE INTERSECTION OF HWY 25 & 250TH ST GUTHRIE CENTER IA 50115- (641)332-2190 MUNICIPAL MINOR 4952 3900103 0075361 9/30/2024 GUTHRIE CENTER EGG FARM 2143 215TH ROAD GUTHRIE CENTER IA 50115--8542 (641)747-3748 INDUSTRIAL MINOR 0252 3900106 0053064 10/28/2024 GUTHRIE CENTER EGG FARM - LAOP 2143 215TH ROAD GUTHRIE CENTER IA 50115--8542 OPERATION MINOR 0252 2242001 0022284 4/30/2026 GUTTENBERG CITY OF STP EAST OF US HWY 52 & GARBER RD INTERSECT GUTTENBERG IA 52052- (563)252-1161 MUNICIPAL MINOR 4952 1444001 0075817 10/31/2023 HALBUR CITY OF (WEST CENTRAL IA RURAL WATER ASSN) ON 245TH STREET SOUTH OF HALBUR HALBUR IA 51444- (712)655-2534 MUNICIPAL MINOR 4952 9756605 0081132 4/30/2023 Hamann Feedlot 4681 240th Street BATTLE CREEK IA 51006-- (712)373-5507 AGRICULTURAL MINOR 0211 3621001 0048321 11/30/2022 HAMBURG CITY OF STP APPROX 1/3 MI SOUTH OF E ST AND COLORADO AVE INTERSECT HAMBURG IA 51640- (712)382-1313 MUNICIPAL MINOR 4952 3544001 0036471 9/30/2021 HAMPTON CITY OF STP EAST OF TOWN OFF ROLLING PRAIRIE TRAIL HAMPTON IA 50441- (641)456-2635 MUNICIPAL MAJOR 4952 7833001 0023485 7/31/2024 HANCOCK CITY OF STP 1/4 MILE W OF MAIN AT KIMBALL ST ALONG COUNTY RD G-30 HANCOCK IA 51536-- (712)741-5665 MUNICIPAL MINOR 4952 7556900 0078581 5/31/2026 Hansen Feed Yards 29382 GRANITE AVENUE HINTON IA 51024-- (712)239-1003 AGRICULTURAL MINOR 0211 6056433 0081159 4/30/2023 Hansmann Feedlot 1916 Kennedy Ave GEORGE IA 51237-- (712)475-3258 AGRICULTURAL MINOR 0211

7 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Facility Address Facility City Facility Facility Zip Facility Phone Permit Type Class. SIC State Code 9442001 0076244 1/31/2023 HARCOURT, CITY OF STP OFF OF LAINSON AVE., WEST OF TOWN HARCOURT IA 50544-- (515)354-5349 MUNICIPAL MINOR 4952 8335002 0021342 1/31/2024 HARLAN CITY OF STP 910 MAPLE ROAD HARLAN IA 51537-- (712)755-3434 MUNICIPAL MAJOR 4952 8335000 0084387 5/31/2026 HARLAN MUNICIPAL UTILITIES WATER TREATMENT PLANT 2400 SOUTHWEST AVE HARLAN IA 51537-- (712)755-5182 MUNICIPAL-WT MINOR 4941 5428001 0079359 2/28/2026 HARPER, CITY OF STP 28871 210TH STREET HARPER IA 52231-- (641)209-1011 MUNICIPAL MINOR 4952 0330001 0070564 11/30/2022 HARPERS FERRY, CITY OF STP 1009 WINFIELD ROAD HARPERS FERRY IA 52146- (563)586-2777 MUNICIPAL MINOR 4952 7222001 0036048 9/30/2022 HARRIS CITY OF STP 123 RAILROAD AVE, PO BOX 135 HARRIS IA 51345--0135 (712)349-2406 MUNICIPAL MINOR 4952 9128001 0066761 9/30/2021 HARTFORD CITY OF STP 600 FEET EAST OF NE 61ST STREET INTERSECTION ON HWY 5 HARTFORD IA 50118- (515)989-0267 MUNICIPAL MINOR 4952 7128001 0036480 6/30/2024 HARTLEY CITY OF STP 521 S 8TH AVE E HARTLEY IA 51346- (712)928-2240 MUNICIPAL MINOR 4952 5000603 0065668 9/30/2023 HARVESTER GOLF CLUB DEVELOPMENT 340TH STREET 3/4 MILE WEST OF CANFIELD AVE RHODES IA 50234-- (641)792-7011 SEMI-PUBLIC MINOR 6515 6338001 0072338 11/30/2022 HARVEY CITY OF STP 0.3 MILES NE OF WABASH ST & DEPOT ST INTERSECTION HARVEY IA 50119- (641)949-6600 MUNICIPAL MINOR 4952 6527001 0079758 4/30/2023 HASTINGS, CITY OF STP 420 TARKIO ST HASTINGS IA 51540-- (712)624-9021 MUNICIPAL MINOR 4952 8459740 0079499 5/31/2023 Haverhals Feedlot 2320 400TH STREET HAWARDEN IA 51023-- (712)722-4093 AGRICULTURAL MINOR 0211 8434001 0021083 6/30/2024 HAWARDEN CITY OF STP ONE BLOCK WEST OF AVENUE C, NORTH OF 10TH STREET HAWARDEN IA 51023- (712)551-4427 MUNICIPAL MINOR 4952 5600602 0068063 12/31/2015 HAWES ENTERPRISES LLC 3611 ARGYLE ROAD KEOKUK IA 52632- (319)835-9336 SEMI-PUBLIC MINOR 6515 5600605 0067938 4/27/2013 HAWES INVESTMENTS (NOW DENNINGS BROTHERS LLC, SERIES III) 2460 340TH ST KEOKUK IA 52632-- (319)835-9336 SEMI-PUBLIC MINOR 6515 3346001 0036072 4/30/2025 HAWKEYE CITY OF STP SOUTH OF TRINITY LUTHERAN CHURCH HAWKEYE IA 52147- (563)427-4830 MUNICIPAL MINOR 4952 4100201 0083160 8/31/2024 HAWKEYE PRIDE EGG FARMS, L.L.P. 1275 DEERE AVE CORWITH IA 50430-- (712)722-4265 SEMI-PUBLIC MINOR 0252 4100203 0053115 3/11/2024 HAWKEYE PRIDE EGG FARMS, L.L.P. - LAOP 1275 DEERE AVENUE CORWITH IA 50430-- (712)722-4265 OPERATION MINOR 0252 2326115 0068101 5/31/2026 HAWKINS - CAMANCHE 2619 CAMANCHE INDUSTRIAL DRIVE CAMANCHE IA 52730- (314)471-0500 INDUSTRIAL MINOR 2819 1031001 0044024 10/31/2022 HAZLETON CITY OF STP 0.3 MILES WEST OF SOUTH & PALMER STREET HAZLETON IA 50641-- (319)636-2539 MUNICIPAL MINOR 4952 5432001 0036498 11/30/2025 HEDRICK CITY OF STP NE OF INTERSECTION HWY 21 AND HWY 149 HEDRICK IA 52563- (515)653-4914 MUNICIPAL MINOR 4952 6529001 0061590 7/31/2023 HENDERSON CITY OF STP 1/4 MILE WEST OF MYRTLE ST. AND WEST ST. HENDERSON IA 51541- (712)825-5151 MUNICIPAL MINOR 4952 5640106 0063045 4/30/2022 HENDRICKS RIVER LOGISTICS, LLC 3254 MISSISSIPPI RIVER ROAD KEOKUK IA 52632-- (319)524-6841 INDUSTRIAL MINOR 4491 4800205 0074225 3/31/2023 HERITAGE INN AMANA COLONIES 2185 U AVENUE WILLIAMSBURG IA 52361-- (612)868-1684 SEMI-PUBLIC MINOR 7032 5735000 0078743 1/31/2026 HIAWATHA, CITY OF MS4 81 EMMONS ST HIAWATHA IA 52233-- (319)393-1515 STORMWATER MINOR 4952 3100302 0063991 2/28/2022 HICKORY ACRES SUBDIVISION WESTERNMOST END OF HICKORY HOLLOW CT DUBUQUE IA 52003- (563)583-9005 SEMI-PUBLIC MINOR 8641 8500600 0067814 1/31/2025 HICKORY GROVE COURT, LLC 2279 E. 190TH STREET AMES IA 50010- (515)388-4515 SEMI-PUBLIC MINOR 6515 8600900 0066940 9/30/2025 HICKORY HILLS PARK 3338 HICKORY HILLS RD LA PORTE CITY IA 50651- (319)342-3350 SEMI-PUBLIC MINOR 9512 5600301 0076970 2/10/2007 HIDDEN OAKS ESTATES SUBDIVISION-STP 2787 CHALK RIDGE RD FORT MADISON IA 52627--8000 (319)470-0077 SEMI-PUBLIC MINOR 8641 9000601 0067636 10/31/2017 HIDDEN VALLEY MHP (NOW BEAR CREEK FLATS) S.E. CORNER OF HWY 34 & 163rd AVE. INTERSECTION OTTUMWA IA 52501- (515)777-5050 SEMI-PUBLIC MINOR 6515 7557919 0080977 2/28/2023 Hiemstra Farms 44485 300th Street KINGSLEY IA 51028-- (712)251-4699 AGRICULTURAL MINOR 0211 9200501 0070084 8/31/2022 HIGHLAND COMMUNITY SCHOOL 1715 VINE AVE. RIVERSIDE IA 52327--0481 (319)648-3822 SEMI-PUBLIC MINOR 8211 5221002 0052894 8/31/2025 HILLS, CITY OF WWTF 1/2 MILE SOUTH OF INTERSECTION OF 3RD ST AND IOWA ST HILLS IA 52235-- (319)679-3197 MUNICIPAL MINOR 4952 4425001 0072435 6/30/2016 HILLSBORO CITY OF STP 0.4 MILE SOUTH OF TOWN HILLSBORO IA 52630--0133 (319)253-4465 MUNICIPAL MINOR 4952 4800901 0065927 4/30/2018 HILLSIDE ESTATES CARE FACILITY (NOW BAYER PRODUCTION SUPPLY) 0.15 MILES NE OF M AVE & 225TH ST. INTERSECTION WILLIAMSBURG IA 52301- (319)668-1659 SEMI-PUBLIC MINOR 2879 7528001 0057053 1/31/2019 HINTON CITY OF STP APPROX. 0.75 MILES SOUTH OF HINTON EAST OF HIGHWAY 75 HINTON IA 51024-- (712)947-4128 MUNICIPAL MINOR 4952 1750116 0071951 11/30/2021 HOLCIM (US) INC. - WEST QUARRY 14322 300th St MASON CITY IA 50401-- (641)421-3308 INDUSTRIAL MINOR 3241 3839001 0041254 4/30/2026 HOLLAND CITY OF STP 1/4 MILE SOUTH OF COUNTY ROAD D-35 HOLLAND IA 50642-- (319)824-5131 MUNICIPAL MINOR 4952 4721001 0021954 12/31/2022 HOLSTEIN CITY OF STP GERMAN AVE 0.10 MILES SOUTH OF HWY 20 HOLSTEIN IA 51025- (712)368-4898 MUNICIPAL MINOR 4952 3146001 0025992 3/31/2024 HOLY CROSS CITY OF STP 1/4 MILE N. OF MAIN ST & SUNSHINE ST HOLY CROSS IA 52053- (319)870-2475 MUNICIPAL MINOR 4952 1900107 0081981 12/17/2013 HOMELAND ENERGY SOLUTIONS, LLC 2779 IOWA HIGHWAY 24 LAWLER IA 52154-- INDUSTRIAL MINOR 2869 8500603 0067806 12/31/2015 HOMESTEAD COLONY MOBILE HOME PARK 843 W. 190TH.STREET AMES IA 50010- (712)540-0583 SEMI-PUBLIC MINOR 6515 4830901 0023591 4/30/2019 HOMESTEAD SANITARY DISTRICT 4318 V STREET HOMESTEAD IA 52236- (319)622-3746 MUNICIPAL MINOR 4952 8460406 0082520 8/31/2026 Hoogland Dairy 2982 470th Street MAURICE IA 51036--7589 (712)567-5105 AGRICULTURAL MINOR 0241 8456222 0077615 9/30/2024 Hoogland Feedlot 2998 480TH STREET MAURICE IA 51036-- (712)567-3702 AGRICULTURAL MINOR 0211 2835001 0023469 8/31/2025 HOPKINTON CITY OF STP LOCUST ST. HOPKINTON IA 52237--0154 (563)926-2181 MUNICIPAL MINOR 4952 9738001 0036501 12/31/2023 HORNICK CITY OF STP SOUTH OF 325TH STREET ON NW SIDE OF TOWN HORNICK IA 51026- (712)874-3374 MUNICIPAL MINOR 4952 8439001 0036897 6/30/2023 HOSPERS CITY OF STP 100 3RD AVE. SOUTH HOSPERS IA 51238-- (712)752-8602 MUNICIPAL SIGNIFICANT MINOR 4952 5633001 0036901 6/30/2016 HOUGHTON CITY OF STP 160TH AVE 1/2 N OF 130TH AVE HOUGHTON IA 52631--0113 (319)469-6969 MUNICIPAL MINOR 4952 4254001 0031429 11/30/2019 HUBBARD CITY OF STP 323 E. Maple HUBBARD IA 50122--0265 (641)864-3187 MUNICIPAL MINOR 4952 1100107 0076767 11/30/2024 HUBBARD FEEDS INC. 5890 70TH AVENUE ALTA IA 51002-- (712)229-5374 OPERATION MINOR 2048 0737002 0027243 7/31/2023 HUDSON CITY OF STP APPROX 0.5 MILES NE OF SERGEANT RD AND EDDYSTONE DR INTERSECT HUDSON IA 50643-- (319)988-3051 MUNICIPAL MINOR 4952 0737003 0084484 5/31/2024 HUDSON, CITY OF MS4 CITY OF HUDSON HUDSON IA 50643-- STORMWATER MINOR 4952 8444001 0020991 5/31/2024 HULL CITY OF STP 2600 FEET EAST OF THE INTERSECTION OF DIVISION ST AND 310TH ST. HULL IA 51239--0816 (712)439-1521 MUNICIPAL MINOR 4952 4641001 0047791 11/30/2025 HUMBOLDT CITY OF STP 2405 GOTCH PARK RD. HUMBOLDT IA 50548-- (515)332-1066 MUNICIPAL MAJOR 4952 9348001 0043150 7/31/2022 HUMESTON CITY OF STP NORTH END OF TOWN, APPROX. 1/4 MILE EAST OF N FRONT ST/HWY 65 HUMESTON IA 50123- (641)876-6312 MUNICIPAL MINOR 4952 7157435 0080365 2/28/2023 Hunt Brothers Feedlot 4817 MONROE AVE. GRANVILLE IA 51022-- (712)727-3562 AGRICULTURAL MINOR 0211 5059104 0076121 3/31/2022 HUNT CLEANERS, INC. 1120 E 14TH ST N NEWTON IA 50208- (641)791-9911 INDUSTRIAL MINOR 7216 8538002 0083518 4/30/2022 HUXLEY CITY OF STP 1701 EAST 1ST STREET HUXLEY IA 50124-- (515)597-2562 MUNICIPAL MINOR 4952 1600113 0071056 2/17/2010 HWH CORPORATION 2096 MOSCOW ROAD MOSCOW IA 52760-- (563)724-3396 INDUSTRIAL MINOR 3593 1000905 0053285 2/1/2023 HWY 150 HMA PAVEMENT PROJECT IA 150 FROM I-380 TO N. OF US 20 INDEPENDENCE IA 50644-- STORMWATER MINOR 1629 9800802 0084221 3/31/2026 I35-105 INTERCHANGE COMMERCIAL DISTRICT 796 STATE HWY 105 NORTHWOOD IA 50459-- (641)220-3460 SEMI-PUBLIC MINOR 7993 3100202 0081612 8/31/2023 ICE HARBOR CENTER 400 ICE HARBOR DRIVE DUBUQUE IA 52001-- (563)583-1470 INDUSTRIAL MINOR 8712 4728001 0020761 4/30/2026 IDA GROVE CITY OF STP 1201 1ST STREET IDA GROVE IA 51445- (712)364-3252 MUNICIPAL MINOR 4952 5225110 0079235 8/31/2025 IIHR OAKDALE ANNEX OLD FARMSTEAD ROAD IOWA CITY IA 52241-- INDUSTRIAL MINOR 8221 1037001 0036510 9/30/2025 INDEPENDENCE CITY OF STP 2018 THREE ELMS PARK ROAD INDEPENDENCE IA 50644--9865 (319)334-3750 MUNICIPAL MAJOR 4952 9300601 0083691 6/30/2022 INDIAN RIDGE HOMEOWNERS ASSOCIATION 1700 FEET NW OF 100TH AVE & VALE INTERSECTION MELROSE IA 52569-- (641)226-5178 SEMI-PUBLIC MINOR 8641 9133001 0027669 6/30/2024 INDIANOLA CITY OF STP (NORTH) 11870 HOOVER STREET INDIANOLA IA 50125-- (515)961-5616 MUNICIPAL MAJOR 4952 0375101 0059102 10/31/2022 INDUSTRIAL LAMINATES/NORPLEX INCORPORATED 665 LYBRAND STREET POSTVILLE IA 52162- (563)864-4232 INDUSTRIAL MINOR 3083 3126123 0081591 4/30/2025 INTERSTATE BUILDING, LLLP 131 W 10TH ST DUBUQUE IA 52001-- (563)557-7010 INDUSTRIAL MINOR 6512 6040001 0031232 12/31/2022 INWOOD CITY OF STP 517 N OAK STREET INWOOD IA 51240- (712)753-4833 MUNICIPAL MINOR 4952 5200401 0067083 11/13/2013 IO-DIS-E-CA CAMP 3271 SANDY BEACH RD NE SOLON IA 52333--9333 (319)848-4187 SEMI-PUBLIC MINOR 7999 1946001 0058777 4/30/2025 IONIA CITY OF STP 1/2 MILE SE OF E MAIN ST & EAST ST INTERSECTION IONIA IA 50645- (641)394-2968 MUNICIPAL MINOR 4952 8222121 0079430 10/31/2024 IOWA AMERICAN WATER COMPANY EAST RIVER STATION 1719 EAST RIVER DRIVE DAVENPORT IA 52803-- MUNICIPAL-WT MINOR 4941 2900900 0022144 1/31/2025 IOWA ARMY AMMUNITION PLANT 17571 HIGHWAY 79 MIDDLETOWN IA 52638--5000 (319)753-7724 INDUSTRIAL MAJOR 3489 7700502 0075531 1/31/2024 IOWA ASSOCIATION OF MUNICIPAL UTILITIES 1735 NE 70TH AVENUE ANKENY IA 50021- (515)289-1999 SEMI-PUBLIC MINOR 8651 5200601 0066303 12/31/2025 IOWA CITY MOBILE HOME PARK 4494 TAFT AVENUE S.E. IOWA CITY IA 52240- (319)351-5450 SEMI-PUBLIC MINOR 6515 5225601 0063274 7/31/2021 IOWA CITY REGENCY MOBILE HOME PARK STP 4455 OAK CREST HILL ROAD SE. IOWA CITY IA 52240- (319)351-8808 SEMI-PUBLIC MINOR 6515 5225000 0076082 12/31/2023 IOWA CITY WATER TREATMENT PLANT 80 STEPHEN ATKINS DRIVE IOWA CITY IA 52240-- (319)356-5165 MUNICIPAL-WT MINOR 4941 5225002 0070866 4/30/2025 IOWA CITY, CITY OF (SOUTH) STP 4366 NAPEOLEON ST SE IOWA CITY IA 52240- (319)356-5170 MUNICIPAL MAJOR 4952 5225005 0078298 5/31/2024 IOWA CITY, CITY OF MS4 410 E. WASHINGTON ST. IOWA CITY IA 52240-- (319)356-5437 STORMWATER MINOR 4952 4800904 0072206 9/30/2024 IOWA COUNTY SANITARY LANDFILL 3369 HIGHWAY 6 TRAIL HOMESTEAD IA 52236-- (319)828-4401 INDUSTRIAL MINOR 4953 4800802 0080969 7/31/2024 IOWA COUNTY WATER TREATMENT FACILITY 499 220th Trail AMANA IA 52203-- MUNICIPAL-WT MINOR 4941 0100903 0068756 5/28/2014 IOWA DOT REST AREA #01-I80 ADAIR Mile Marker 80 Interstate 80 East Bound ADAIR IA 50002- (515)239-1680 SEMI-PUBLIC MINOR 4959 0100902 0068764 8/31/2019 IOWA DOT REST AREA #02 I80 ADAIR Mile Marker 79 West Bound Interstate 80 ADAIR IA 50002-- (515)239-1680 SEMI-PUBLIC MINOR 4959 4800903 0067598 3/31/2021 IOWA DOT REST AREA #06 I80 VICTOR INTERSTATE 80, EXIT 208 VICTOR IA 52347-- (319)351-9185 SEMI-PUBLIC MINOR 4959 8500902 0067555 7/31/2017 IOWA DOT REST AREA #19 I35 STORY CITY 0.1 MILES SW OF THE SOUTH I35 IOWA DOT REST AREA STORY CITY IA 50010- (515)290-2815 SEMI-PUBLIC MINOR 4959 8500903 0067547 7/31/2017 IOWA DOT REST AREA #20 I35 STORY CITY 0.1 MILES SE OF THE NORTH I35 IOWA DOT REST AREA STORY CITY IA 50248-- (515)290-2815 SEMI-PUBLIC MINOR 4959 7800903 0068896 1/31/2019 IOWA DOT REST AREA #23-I680 LOVELAND 0.1 MILES SW OF THE IOWA DOT RA #23-I680 LOVELAND LOVELAND IA 51555-- (515)239-1680 SEMI-PUBLIC MINOR 4959

8 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Facility Address Facility City Facility Facility Zip Facility Phone Permit Type Class. SIC State Code 7800904 0068900 12/31/2023 IOWA DOT REST AREA #24-I680 LOVELAND 0.1 MILES NE OF THE IOWA DOT RA #24 on I-680 LOVELAND IA 51555-- (515)239-1680 SEMI-PUBLIC MINOR 4959 7800905 0068918 4/30/2024 IOWA DOT REST AREA #29 & #30 I80 UNDERWOOD I-80 EASTBOUND AT MILEPOST 19 UNDERWOOD IA 51576- (515)239-1680 SEMI-PUBLIC MINOR 4959 2700902 0068934 8/31/2018 IOWA DOT REST AREA #34 I35 LAMONI I35 Mile Marker 7 LAMONI IA 50140-- (515)239-1680 SEMI-PUBLIC MINOR 4959 3500904 0077321 3/31/2025 IOWA DOT REST AREA I35 DOWS (IRUA) 0.2 MILES SW OF THE I35 DOWS REST AREA DOWS IA 50071-- (515)239-1680 SEMI-PUBLIC MINOR 4959 4260001 0023442 8/31/2025 IOWA FALLS CITY OF STP 212 HOLLIS AVE. IOWA FALLS IA 50126- (641)648-3714 MUNICIPAL MAJOR 4952 5600118 0052166 2/28/2026 IOWA FERTILIZER COMPANY 3550 180TH ST WEVER IA 52658--9552 (319)376-4500 INDUSTRIAL MAJOR 2873 3050901 0059765 8/31/2026 IOWA GREAT LAKES SANITARY DISTRICT STP 303 28TH STREET MILFORD IA 51351- (712)338-2626 MUNICIPAL MAJOR 4952 7455000 0081183 9/30/2025 IOWA LAKES REGIONAL WATER OSGOOD PLANT 3166 RIVER ROAD GRAETTINGER IA 50636-- MUNICIPAL-WT MINOR 4941 7727805 0052438 1/31/2026 IOWA LUTHERAN HOSPITAL 700 E UNIVERSITY AVE. DES MOINES IA 50309-- INDUSTRIAL MINOR 8062 7727806 0052446 1/31/2026 IOWA METHODIST MEDICAL CENTER 1200 PLEASANT ST. DES MOINES IA 50309-- INDUSTRIAL MINOR 8062 8670101 0000795 12/31/2019 IOWA PREMIUM, LLC 3337 L AVENUE TAMA IA 52339- (641)484-2220 INDUSTRIAL MINOR 2011 0900106 0079693 10/31/2022 IOWA REGIONAL UTILITIES ASSOCIATION 1224 230TH STREET WAVERLY IA 50677-- (641)792-7011 MUNICIPAL-WT MINOR 4941 8503004 0078174 1/31/2024 IOWA STATE UNIVERSITY MS4 1122 EH&S SERVICES BUILDING AMES IA 50011--3606 (515)294-7676 STORMWATER MINOR 4952 8503100 0032697 5/31/2023 IOWA STATE UNIVERSITY POWER PLANT 220 POWER PLANT BLDG AMES IA 50011-- (515)294-8795 INDUSTRIAL MINOR 8221 2900101 0001783 4/30/2020 IPL - BURLINGTON GENERATING STATION 4282 SULLIVAN SLOUGH ROAD BURLINGTON IA 52601--9015 (319)758-5311 INDUSTRIAL MAJOR 4911 0300100 0003735 5/31/2021 IPL - LANSING GENERATING STATION 2320 POWER PLANT DR LANSING IA 52151-- (563)538-3118 INDUSTRIAL MAJOR 4911 9000101 0060909 4/30/2023 IPL - OTTUMWA GENERATING STATION 20775 POWER PLANT RD OTTUMWA IA 52501-- (608)458-3108 INDUSTRIAL MAJOR 4911 5715108 0000540 10/31/2021 IPL - PRAIRIE CREEK GENERATING STATION 3300 C STREET S.W. CEDAR RAPIDS IA 52404--7457 (319)786-8416 INDUSTRIAL MAJOR 2032 8447001 0027961 9/30/2023 IRETON CITY OF STP 0.50 MILES NORTH OF 470TH ST. & 0.30 MILES WEST OFF DOGWOOD AVE. IRETON IA 51027-- (712)278-2112 MUNICIPAL MINOR 4952 8340001 0021024 10/31/2021 IRWIN CITY OF STP 1900TH AND REDWOOD ROAD IRWIN IA 51446- (712)782-3332 MUNICIPAL MINOR 4952 0800108 0082732 8/31/2025 ISU BIOCENTURY RESEARCH FARM - LAOP 1327 U AVE BOONE IA 50036-- (515)296-6039 OPERATION MINOR 8733 1556301 0078476 2/29/2024 J. W. Freund Farms, Inc. 63200 570th St LEWIS IA 51544-- (712)769-2313 AGRICULTURAL MINOR 0211 1456478 0080292 4/30/2022 James Pudenz Inc 12892 HWY 71N CARROLL IA 51401-- (712)792-3919 AGRICULTURAL MINOR 0211 0732001 0026506 12/31/2021 JANESVILLE CITY OF STP 0.6 MI SE OF TAYLOR RD & MARQUIS RD W INTERSECTION JANESVILLE IA 50647- (319)987-2097 MUNICIPAL MINOR 4952 5000706 0076848 2/28/2025 JASPER COUNTY REGIONAL WASTEWATER SYSTEM 12209 HWY 6 EAST KELLOGG IA 50135-- (641)792-7011 MUNICIPAL MINOR 4952 4000701 0079898 1/31/2025 JAY BROS INC. 3063 220TH ST WILLIAMS IA 50271 SEMI-PUBLIC MINOR 5541 9083101 0060569 10/31/2021 JBS PORK 600 SOUTH IOWA AVENUE OTTUMWA IA 52501-- (641)682-8532 INDUSTRIAL MAJOR 2011 1556742 0080306 8/31/2021 JDH, Inc. Feedlot 64919 Yankton Road VILLISCA IA 50864-- (712)763-4311 AGRICULTURAL MINOR 0211 9778151 0079944 12/31/2025 JEBRO, INCORPORATED 2303 BRIDGEPORT DRIVE SIOUX CITY IA 51111-- (712)277-8855 STORMWATER MINOR 2951 6056976 0082091 1/31/2025 JEFF GROENEWEG FEEDLOT 1983 240TH STREET INWOOD IA 51240-- (712)753-2805 AGRICULTURAL MINOR 0211 3742001 0021300 10/31/2025 JEFFERSON CITY OF STP 605 W. RUSSELL ST. JEFFERSON IA 50129-- (515)386-4711 MUNICIPAL MAJOR 4952 1044002 0075302 5/31/2024 JESUP, CITY OF STP (SOUTH) 601 YOUNG JESUP IA 50648--0592 (319)827-1602 MUNICIPAL MAJOR 4952 4027001 0024422 12/31/2022 JEWELL CITY OF STP 0.3 MILES EAST OF LITTLE WALL LAKE RD & PARK ST JEWELL IA 50130- (515)827-5425 MUNICIPAL MINOR 4952 8461290 0077879 9/30/2025 JGM Feedlot LLC 4163 HICKORY AVE SIOUX CENTER IA 51250-- (712)470-4725 AGRICULTURAL MINOR 0211 8222107 0059501 12/31/2025 JOHN DEERE DAVENPORT WORKS 1175 E 90TH ST DAVENPORT IA 52807-- (563)388-4200 INDUSTRIAL SIGNIFICANT MINOR 3531 3126107 0000051 8/31/2019 JOHN DEERE DUBUQUE WORKS 18600 SOUTH JOHN DEERE ROAD DUBUQUE IA 52004--0538 (563)589-6133 INDUSTRIAL MAJOR 3523 0790107 0059439 6/30/2021 JOHN DEERE ENGINE WORKS 3801 W RIDGEWAY AVE WATERLOO IA 50704-- (319)292-5207 INDUSTRIAL MINOR 3519 0790116 0069485 11/30/2023 JOHN DEERE FOUNDRY WATERLOO 2000 WESTFIELD AVENUE WATERLOO IA 50704--0270 (319)292-5447 INDUSTRIAL MINOR 3523 0790102 0062481 5/31/2024 JOHN DEERE PRODUCT ENGINEERING CENTER 6725 CEDAR HEIGHTS DRIVE CEDAR FALLS IA 50613-- (319)292-4570 INDUSTRIAL MINOR 8731 0790103 0000060 11/30/2023 JOHN DEERE WATERLOO WORKS 400 WESTFIELD AVENUE WATERLOO IA 50704--0270 (319)292-4479 INDUSTRIAL MINOR 3523 6056833 0079685 7/31/2021 John Fluit Jr., Beef Open Feedlot 1948 240TH ST INWOOD IA 51240-- (712)753-4642 AGRICULTURAL MINOR 0211 9433000 0078441 4/30/2020 JOHN W. PRAY WATER FACILITY 600 PHINNEY PARK DR FORT DODGE IA 50501-- (515)576-6101 MUNICIPAL-WT MINOR 4941 7740002 0078212 4/30/2024 JOHNSTON, CITY OF MS4 6221 MERLE HAY ROAD JOHNSTON IA 50131-- (515)278-2033 STORMWATER MINOR 4952 9835001 0052077 8/31/2020 JOICE, CITY OF STP Approx. 1/2 mile south of town JOICE IA 50446-- MUNICIPAL MINOR 4952 6066585 0053042 6/30/2024 Jon Van Ginkel Feedlot 1919 260th Street INWOOD IA 51240-- (712)470-6696 AGRICULTURAL MINOR 0211 1456269 0081337 6/30/2023 JOSH PUDENZ 13095 OLYMPIC AVENUE CARROLL IA 51401-- AGRICULTURAL MINOR 0211 6059150 0084131 8/31/2023 JRT Focus Farms Ltd, Site 1 2596 180th St ROCK RAPIDS IA 51246 (712)253-2138 AGRICULTURAL MINOR 0211 8460404 0077577 10/31/2021 K & D Feedyards, LLC 2818 390th Street SIOUX CENTER IA 51250-- (712)722-3332 AGRICULTURAL MINOR 0211 7000113 0052387 10/31/2025 K.A. STEEL CHEMICALS D/B/A OLIN CHLOR ALKALI PRODUCTS & VINYLS 2581 PETTIBONE AVE. MUSCATINE IA 52761-- OPERATION MINOR 5169 9233001 0059196 1/31/2019 KALONA CITY OF STP STATE HIGHWAY 1 AND ENGLISH RIVER KALONA IA 52247- (319)656-2310 MUNICIPAL MINOR 4952 5200116 0052476 6/30/2021 KALONA CREAMERY, LLC 2206 540TH ST. SW KALONA IA 52247-- INDUSTRIAL MINOR 2022 4033001 0069124 1/31/2023 KAMRAR CITY OF STP 1/4 mile SE of Town on Mill Street KAMRAR IA 50132- (515)539-4228 MUNICIPAL MINOR 4952 4150001 0026000 4/30/2026 KANAWHA CITY OF STP 938 120TH STREET KANAWHA IA 50447- (641)762-3511 MUNICIPAL MINOR 4952 8463595 0080438 7/31/2022 Kekerix Kattle Co. 1943 300th Street ROCK VALLEY IA 51247-- (712)476-2404 AGRICULTURAL MINOR 0211 7561752 0080179 4/30/2022 Kellen Feedlot 23657 MARBLE AVE LE MARS IA 51031-- (712)546-1508 AGRICULTURAL MINOR 0211 8040001 0061760 7/31/2021 KELLERTON CITY OF STP 0.20 MILES EAST OF INTERSECT. OF CO. HWY J45 & 6TH AVE. KELLERTON IA 50133--0040 (641)783-2261 MUNICIPAL MINOR 4952 5038001 0043541 5/31/2025 KELLOGG CITY OF STP 0.1 MILES E OF US HWY 6 & IOWA 224 INTERSECTION KELLOGG IA 50135- (641)526-8264 MUNICIPAL MINOR 4952 4566247 0083062 7/31/2025 Kenneth Moellers - Hayek Farm 24343 110th Street CRESCO IA 52136-- (563)547-2026 AGRICULTURAL MINOR 0241 9840001 0076635 8/31/2016 KENSETT, CITY OF-STP 0.9 MILES E. OF MAIN ST & 0.9 MILES S. OF 4TH ST. KENSETT IA 50448--0095 (641)512-3349 MUNICIPAL MINOR 4952 5625110 0077143 7/31/2020 KENSINGTON FORT MADISON, LLC 2210 AVENUE H, SUITE A FORT MADISON IA 52627- (319)372-4233 INDUSTRIAL MINOR 8361 5640001 0042609 8/31/2023 KEOKUK CITY OF STP 1000 MISSISSIPPI DRIVE KEOKUK IA 52632-- (319)524-3412 MUNICIPAL MAJOR 4952 6245001 0062073 10/31/2024 KEOMAH VILLAGE CITY OF STP 0.10 MILES NW OF ROYAL LN & LAKE KEOMAH INTERSECT. OSKALOOSA IA 52577-- (641)673-5292 MUNICIPAL MINOR 4952 8938001 0023361 4/30/2025 KEOSAUQUA CITY OF STP WATER STREET KEOSAUQUA IA 52565- (319)293-3536 MUNICIPAL MINOR 4952 5440001 0035998 11/30/2023 KEOTA CITY OF STP 1600 FEET SOUTH OF TOWN AT END OF WEST PARK AVE. KEOTA IA 52248--0077 (515)636-2266 MUNICIPAL MINOR 4952 0398103 0080870 5/31/2022 KERNDT BROTHERS SAVINGS BANK 820 11TH AVENUE SW WAUKON IA 52172-- (800)568-4449 INDUSTRIAL MINOR 6022 5442001 0079910 5/31/2022 KESWICK, CITY OF STP 13098 190TH AVE KESWICK IA 50136-- (319)752-6395 MUNICIPAL MINOR 4952 3126201 0084255 11/30/2025 KEY CITY PLATING 2500 KERPER BLVD. DUBUQUE IA 52001-- (563)583-6811 INDUSTRIAL MINOR 7549 0640001 0025984 3/31/2024 KEYSTONE CITY OF STP 1065 FEET EAST OF 1ST AVE & RAILROAD ST INTERSECTION KEYSTONE IA 52249- (319)442-3246 MUNICIPAL MINOR 4952 5715112 0002437 5/31/2022 KILBORN, INC. 2911 FIRST AVENUE SE CEDAR RAPIDS IA 52402--4426 (319)364-9154 INDUSTRIAL MINOR 2672 0543001 0025372 12/31/2022 KIMBALLTON CITY OF STP 1/2 MILE S OF ODENSE ST & W 3RD ST INTERSECTION KIMBALLTON IA 51543- (712)249-0130 MUNICIPAL MINOR 4952 5715119 0069523 12/2/2024 KING'S MATERIAL, INC.-WASHOUT FACILITY - LAOP 355 50TH AVENUE DRIVE SW CEDAR RAPIDS IA 52404- (319)364-4144 OPERATION MINOR 3273 7537001 0023400 5/31/2024 KINGSLEY CITY OF STP LOCATED ON QUEST AVE WEST OF CITY KINGSLEY IA 51028--0309 (712)378-3601 MUNICIPAL MINOR 4952 5444001 0077186 7/31/2022 KINROSS, CITY OF STP (RUSS) 1805 WEST JEFFERSON AVENUE KINROSS IA 52335- (641)209-1011 MUNICIPAL MINOR 4952 4800104 0076881 4/30/2022 KINZE MANUFACTURING, INC. 2172 M AVENUE WILLIAMSBURG IA 52361-- (319)668-1300 INDUSTRIAL MINOR 3523 8466255 0083151 5/31/2026 Kirk Den Herder Feedlot 3367 420th Street ORANGE CITY IA 51041-- (712)722-2341 AGRICULTURAL MINOR 0211 9069001 0074667 3/31/2022 KIRKVILLE, CITY OF RICHLAND ROAD OTTUMWA IA 52501- (641)682-8351 MUNICIPAL MINOR 4952 2432001 0020818 8/31/2024 KIRON CITY OF STP SW OF RAILROAD CT & S ORANGE ST INTERSECTION KIRON IA 51448--0215 (712)675-4700 MUNICIPAL MINOR 4952 4155001 0038466 8/31/2022 KLEMME CITY OF STP 1150 FEET SOUTH OF WEST END OF CEMETARY ROAD KLEMME IA 50449-- (641)587-2018 MUNICIPAL MINOR 4952 3100602 0071811 9/30/2022 KNAPP MOBILE HOME PARK-STP 17909 PERU ROAD DUBUQUE IA 52001-- (319)582-7466 SEMI-PUBLIC MINOR 6515 1340000 0084379 10/31/2022 KNIERIM, CITY OF WTP 232 WILLIAMS KNIERIM IA 50552-- (515)469-2242 MUNICIPAL-WT MINOR 4941 6342001 0035866 7/31/2025 KNOXVILLE CITY OF STP 1703 E PLEASANT KNOXVILLE IA 50138-- (641)828-0587 MUNICIPAL MAJOR 4952 9400121 0053000 7/31/2024 KOCH FERTILIZER FORT DODGE NITROGEN PLANT - LAOP 3162 200TH STREET DUNCOMBE IA 50532-- (515)543-4365 OPERATION MINOR 2873 9400100 0000302 7/31/2024 KOCH FERTILIZER FT. DODGE, LLC 3162 200TH ST DUNCOMBE IA 50532-- (515)543-4365 INDUSTRIAL SIGNIFICANT MINOR 2873 6400112 0075591 9/5/2005 KOCH NITROGEN COMPANY, LLC 3046 GARWIN ROAD MARSHALLTOWN IA 50158-- (641)474-2427 INDUSTRIAL MINOR 2873 8466384 0083852 5/31/2023 Kooima Custom Feed 3210 Eagle Ave. ROCK VALLEY IA 51247-- (712)476-2234 AGRICULTURAL MINOR 0211 7048102 0001741 5/31/2025 KRAFTHEINZ COMPANY, L.P. 1357 ISETT AVENUE MUSCATINE IA 52761--4509 (563)262-2200 INDUSTRIAL MINOR 2033 7900714 0067458 4/30/2026 KWIK STAR #303 I-80 & HWY 21 BROOKLYN IA 52211- (319)685-4411 SEMI-PUBLIC MINOR 5541 4945001 0056707 12/31/2025 LA MOTTE CITY OF STP 750 FEET SW OF PLEASANT STREET LA MOTTE IA 52054--0056 (319)773-2204 MUNICIPAL MINOR 4952 0743001 0035963 1/31/2022 LA PORTE CITY, CITY OF STP OFF 8TH STREET, NORTH OF TOWN LA PORTE CITY IA 50651--1234 (319)342-3323 MUNICIPAL MINOR 4952

9 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Facility Address Facility City Facility Facility Zip Facility Phone Permit Type Class. SIC State Code 9138001 0022021 6/30/2016 LACONA CITY OF STP SOUTHEAST OF E. MILL ST. & S. VINE AVE. INTERSECT LACONA IA 50139- (641)534-4608 MUNICIPAL MINOR 4952 4840001 0058521 8/31/2023 LADORA CITY OF STP ON G AVE SOUTH OF TOWN LADORA IA 52251- (319)623-3507 MUNICIPAL MINOR 4952 1345003 0020842 7/31/2023 LAKE CITY CITY OF STP 1708 N 37TH ROAD LAKE CITY IA 51449-- (712)464-3111 MUNICIPAL MINOR 4952 9900900 0066401 7/31/2022 LAKE CORNELIA SANITARY DISTRICT 1/2 MILE NE OF NELSON AVE & 185TH ST INTERSECTION CLARION IA 50525- (515)532-3346 MUNICIPAL MINOR 4952 9200403 0080853 1/31/2024 LAKE DARLING YOUTH CENTER CAMP 3170 DOGWOOD AVENUE BRIGHTON IA 52540-- (319)694-3229 SEMI-PUBLIC MINOR 7032 9545001 0027448 2/28/2022 LAKE MILLS CITY OF STP SOUTH OF W MAIN STREET (HWY 69) ON WEST SIDE OF TOWN LAKE MILLS IA 50450- (515)592-7417 MUNICIPAL MINOR 4952 3900800 0084212 12/31/2022 LAKE PANORAMA ASSOCIATION WTP 6631 WEST RV ROAD PANORA IA 50216-- (641)755-2301 MUNICIPAL-WT MINOR 4941 3045001 0036919 12/31/2022 LAKE PARK CITY OF STP OFF OF SOUTH MARKET STREET LAKE PARK IA 51347- (712)832-3854 MUNICIPAL MINOR 4952 6300907 0083402 5/31/2016 LAKE RED ROCK - WHITEBREAST SEWAGE LAGOON INTERSECTION OF INWOOD DR AND CR-S71 KNOXVILLE IA 50318-- SEMI-PUBLIC MINOR 7033 5200316 0074284 10/31/2024 LAKE RIDGE, INC.- STP 893 SPRING RIDGE DRIVE IOWA CITY IA 52245-- (319)466-9071 SEMI-PUBLIC MINOR 8641 8127001 0041998 4/30/2026 LAKE VIEW CITY OF STP 0.1 MILE NORTH OF US 71 ON PERKINS/HIGH AVE LAKE VIEW IA 51450- (712)657-2634 MUNICIPAL MINOR 4952 3087102 0053299 2/17/2023 LAKESIDE AVE. INFRASTRUCTURE IMPROVEMENTS ALONG LAKESIDE AVE. FROM LAKESHORE CENTER DRIVEWAY TO HARPEN ST. WAHPETON IA 51351-- STORMWATER MINOR 1629 8200605 0064718 5/31/2026 LAKESIDE MANOR MOBILE HOME COMMUNITY 11325 140TH STREET DAVENPORT IA 52804--9513 (563)391-2938 SEMI-PUBLIC MINOR 6515 8461089 0077704 3/31/2023 Laketon Cattle Company (Formerly Performance Beef) 3991 410TH STREET ALTON IA 51003-- (712)752-8336 AGRICULTURAL MINOR 0241 5200304 0061514 8/1/2006 LAKEVIEW KNOLLS 2758 LAKEVIEW DRIVE N.E. SOLON IA 52333- (319)378-8406 SEMI-PUBLIC MINOR 8641 8200602 0067695 3/31/2022 LAKEWOOD ESTATES MOBILE HOME PARK 7171 W. 60TH STREET DAVENPORT IA 52804-- (515)208-0150 SEMI-PUBLIC MINOR 6515 5200327 0081426 3/31/2026 LAKEWOODS DEVELOPMENT SUB./BOWERSOX ADDITION SUB. 1395 LAKEWOODS DR NE SWISHER IA 52338-- SEMI-PUBLIC MINOR 8641 5540001 0078697 10/31/2023 LAKOTA CITY OF STP APPROX. 0.3 MILES EAST OF THE 425TH ST & 185TH ST INTERSECTION LAKOTA IA 50451-- (515)886-2312 MUNICIPAL MINOR 4952 2740001 0036102 8/31/2022 LAMONI CITY OF STP 0.4 MILES EAST OF HWY 69 AND 300TH ST INTERSECT LAMONI IA 50140- (641)784-6911 MUNICIPAL MINOR 4952 1051001 0025348 7/31/2022 LAMONT CITY OF STP 0.4 MILES NE OF CONCORD ST & 135TH ST INTERSECTION LAMONT IA 50650-- (563)924-2068 MUNICIPAL MINOR 4952 8465430 0053261 11/30/2025 Lance Rus 2131 280th St. ROCK VALLEY IA 51247-- AGRICULTURAL MINOR 0211 1449001 0062162 11/30/2021 LANESBORO CITY OF STP 205 E. WILLOW LANESBORO IA 51451- (712)656-2292 MUNICIPAL MINOR 4952 0345001 0024597 3/31/2022 LANSING CITY OF STP 1984 GREAT RIVER ROAD LANSING IA 52151- (319)538-3016 MUNICIPAL MINOR 4952 6000112 0052919 1/31/2024 LARCHWOOD 1447 LLC 1447 140th STREET LARCHWOOD IA 51241-- (712)477-2811 INDUSTRIAL MINOR 2836 6050001 0047333 4/30/2022 LARCHWOOD CITY OF STP INTERSECTION OF CHERRY AVE & IOWA HIGHWAY 9 LARCHWOOD IA 51241- (712)477-2366 MUNICIPAL MINOR 4952 1833001 0024589 11/30/2015 LARRABEE CITY OF STP EAST OF HWY 59, QUARTER MILE SOUTH OF TOWN LARRABEE IA 51029- (712)225-5868 MUNICIPAL MINOR 4952 9756513 0082619 3/31/2025 Larry Guthridge Combined Operation 2871 110th Street KINGSLEY IA 51028-- (712)873-3913 AGRICULTURAL MINOR 0211 3554001 0062944 9/30/2016 LATIMER-COULTER CITY OF STP NORTH SIDE OF TOWN WEST OF HEATHER AVE LATIMER IA 50452- (641)373-0844 MUNICIPAL MINOR 4952 6452001 0072214 8/31/2024 LAUREL, CITY OF STP 2649 - 330TH STREET LAUREL IA 50141--0126 (641)476-3265 MUNICIPAL MINOR 4952 7614001 0025950 8/31/2026 LAURENS CITY OF STP 0.5 MILES EAST OF 130TH AVE AND 450TH ST INTERSECT LAURENS IA 50554- (712)841-4526 MUNICIPAL MINOR 4952 7614000 0082473 12/31/2024 LAURENS, CITY OF WTP 272 N. 3RD LAURENS IA 50554-- (712)841-4526 MUNICIPAL-WT MINOR 4941 0556260 0080080 12/31/2021 Lauritsen Cattle Company 3015 HIGHWAY 71 EXIRA IA 50076-- (712)249-7333 AGRICULTURAL MINOR 0211 1957001 0056910 8/31/2016 LAWLER CITY OF STP 0.2 MILES WEST OF UNION AVE & HIGHWAY 24 INTERSECT LAWLER IA 52154- (563)238-3614 MUNICIPAL MINOR 4952 9743001 0043168 4/30/2024 LAWTON CITY OF STP 300 WEST MAIN ST. LAWTON IA 51030- (712)944-5960 MUNICIPAL MINOR 4952 7540001 0036536 11/30/2023 LE MARS CITY OF STP 705 5TH AVENUE NW LE MARS IA 51031-- (712)546-5003 MUNICIPAL MAJOR 4952 8245002 0022012 7/31/2023 LECLAIRE CITY OF STP 1800 IOWA DRIVE LE CLAIRE IA 52753-- (563)289-4165 MUNICIPAL MAJOR 4952 8245003 0078824 11/30/2024 LECLAIRE, CITY OF MS4 425 N 3RD ST LE CLAIRE IA 52753-- (563)289-4242 STORMWATER MINOR 4952 8657001 0027235 9/30/2025 LEGRAND CITY OF STP 104 W MAIN STREET LE GRAND IA 50142- (641)479-2434 MUNICIPAL MINOR 4952 1750113 0072907 8/31/2024 LEHIGH CEMENT COMPANY LLC 700 25th St NW MASON CITY IA 50401-- INDUSTRIAL MINOR 3241 1700100 0001945 9/17/2005 LEHIGH CEMENT COMPANY LLC 700 25TH ST NW MASON CITY IA 50401-- (641)421-3459 INDUSTRIAL MINOR 3241 9453001 0021296 3/31/2016 LEHIGH CITY OF STP NORTH OF CLAYWORKS DR LEHIGH IA 50557- (515)359-2311 MUNICIPAL MINOR 4952 6259001 0080501 7/31/2024 LEIGHTON, CITY OF STP 1/4 Mile N of 220th St. and Dean Ave. LEIGHTON IA 50143-- (641)673-8851 MUNICIPAL MINOR 4952 4900401 0079766 9/30/2021 LEISURE LAKE, COMMUNITY OF INTERSECTION OF 126TH AVENUE AND 226TH STREET BERNARD IA 52032-- MUNICIPAL MINOR 4952 9549001 0036528 12/31/2022 LELAND CITY OF STP 0.12 MILES SOUTHEAST OF 5TH AVE. & HIGHWAY 69 LELAND IA 50453--0127 (641)567-3330 MUNICIPAL MINOR 4952 8748001 0027995 7/31/2025 LENOX CITY OF STP 1/2 MILE WEST OF TENNESSEE AVE. AND DALLAS ST. LENOX IA 50851--0040 (515)333-2228 MUNICIPAL MINOR 4952 2742001 0027871 10/31/2024 LEON CITY OF STP 1900 SE POPLAR STREET LEON IA 50144-- (641)446-6653 MUNICIPAL MINOR 4952 2742000 0081787 6/30/2018 LEON WATER TREATMENT PLANT 20525 NW LITTLE RIVER LAKE ROAD LEON IA 50144-- (641)446-6344 MUNICIPAL-WT MINOR 4941 8459032 0083895 11/30/2023 Les Ranschau - Ranschau Enterprises 2164 350th Street ROCK VALLEY IA 51247-- (712)476-2088 AGRICULTURAL MINOR 0211 6055001 0026620 2/28/2017 LESTER CITY OF STP 1045 CLINTON ST. LESTER IA 51242-- (712)478-4411 MUNICIPAL MINOR 4952 5847001 0061492 4/30/2016 LETTS CITY OF STP 205 EAST MAIN LETTS IA 52754--0150 (319)726-3251 MUNICIPAL MINOR 4952 1535001 0057487 5/31/2020 LEWIS CITY OF STP 2/3 MILE N. OF MAIN ST. & 1/5 MILE W. OF 1ST ST. LEWIS IA 51544- (712)769-2216 MUNICIPAL MINOR 4952 9144301 0080152 5/31/2023 LIBERTY CENTER CITY OF (WARREN CO. BOARD OF SUPERVISORS) 1621 TYLER STREET LIBERTY CENTER IA 50145-- (641)466-3510 MUNICIPAL MINOR 4952 5148001 0062821 6/30/2016 LIBERTYVILLE CITY OF STP HEMLOCK AVE. LIBERTYVILLE IA 52567- (641)693-4002 MUNICIPAL MINOR 4952 1453001 0056855 12/31/2022 LIDDERDALE CITY OF STP 940 FEET WEST & 800 FEET NORTH OF LEE AVE & 4TH ST INTERSECTION LIDDERDALE IA 51452-- (712)822-5297 MUNICIPAL MINOR 4952 2000300 0068403 11/30/2022 LIFT, L.L.C. NW CORNER OF HWY 69 AND NORMAN ST INTERSECT OSCEOLA IA 50213- (641)342-4517 SEMI-PUBLIC MINOR 6531 4500802 0052031 4/30/2020 LIME SPRINGS BEEF, LLC (NOW UPPER IOWA BEEF, LLC) 4614 US Hwy 63 LIME SPRINGS IA 52155-- INDUSTRIAL MINOR 2011 4535001 0043494 9/30/2023 LIME SPRINGS CITY OF STP 0.4 MILES NE OF NORTH MILLER ST. & GRANGER RD. INTERSECTION LIME SPRINGS IA 52155- (563)547-8248 MUNICIPAL MINOR 4952 8562100 0079375 9/30/2024 LINCOLNWAY ENERGY, LLC 59511 W LINCOLN HWY NEVADA IA 50201-- (515)232-1010 INDUSTRIAL MINOR 2869 3944001 0081973 5/31/2023 LINDEN CITY OF STP 0.4 MILES W OF 250TH ST & A AVE INTERSECTION LINDEN IA 50146-- MUNICIPAL MINOR 4952 9352001 0071897 11/30/2017 LINEVILLE CITY OF STP 0.5 MI E ON LINE ST PAST JOHNSON ST INTERSECT LINEVILLE IA 50147--0180 (641)876-6875 MUNICIPAL MINOR 4952 1147001 0042897 4/30/2022 LINN GROVE CITY OF STP SW CORNER OF HWY 51 AND WEAVER ST INTERSECT LINN GROVE IA 51033- (712)296-0918 MUNICIPAL MINOR 4952 9200601 0068560 12/13/2012 LINN HOLLOW MOBILE HOME PARK 2649 WAYLAND ROAD WASHINGTON IA 52353- (319)648-3707 SEMI-PUBLIC MINOR 6515 5748001 0025909 4/30/2025 LISBON CITY OF STP 115 NORTH WASHINGTON STREET LISBON IA 52253-- (319)455-2459 MUNICIPAL MINOR 4952 6462001 0056847 7/31/2022 LISCOMB CITY OF STP 0.2 MILES SW OF BANGOR ST & CLINTON ST INTERSECTION LISCOMB IA 50148- (515)496-5419 MUNICIPAL MINOR 4952 6060001 0025356 12/31/2021 LITTLE ROCK CITY OF STP 1/2 MILE EAST OF TOWN ON 140TH ST LITTLE ROCK IA 51243-- (712)479-2526 MUNICIPAL MINOR 4952 1800112 0077275 4/30/2025 LITTLE SIOUX CORN PROCESSORS, LLC 4808 F AVE MARCUS IA 51035-- (712)376-2800 INDUSTRIAL MINOR 2869 4333001 0080276 4/30/2019 LITTLE SIOUX/RIVER SIOUX STP NW 1/4 OF SECTION 24 TOWNSHIP 81 RANGE 45 LITTLE SIOUX IA 51545-- (712)649-2211 MUNICIPAL MINOR 4952 4647001 0023566 4/30/2023 LIVERMORE CITY OF STP NE OF 120 ST & OAK AVE INTERSECTION LIVERMORE IA 50558--0016 (515)379-1074 MUNICIPAL MINOR 4952 5157001 0072729 8/31/2018 LOCKRIDGE CITY OF STP HIGHWAY 34 1/4 MILE EAST OF WINTERGREEN BLVD. LOCKRIDGE IA 52635- (319)696-2817 MUNICIPAL MINOR 4952 4337001 0058599 7/12/2006 LOGAN CITY OF STP OFF OF HWY 30, EAST OF TOWN LOGAN IA 51546- (712)644-3387 MUNICIPAL MINOR 4952 1389002 0084280 7/31/2023 LOHRVILLE, CITY OF STP HIGHWAY 175 1/2 MILE EAST OF ASH STREET LOHRVILLE IA 51453-- (712)465-5004 MUNICIPAL MINOR 4952 5547001 0082341 2/28/2025 LONE ROCK, CITY OF STP 320TH STREET (1/3 MILE EAST OF 70TH AVE.) LONE ROCK IA 50559-- (515)925-3240 MUNICIPAL MINOR 4952 5240001 0060330 4/30/2020 LONE TREE CITY OF STP (SOUTH) 5099 620TH STREET SE LONE TREE IA 52755- (319)629-5417 MUNICIPAL MINOR 4952 8251001 0022292 7/31/2022 LONG GROVE CITY OF STP OFF OF MAIN ST., WEST OF TOWN LONG GROVE IA 52756- (563)285-4904 MUNICIPAL MINOR 4952 5200323 0080730 4/30/2024 LONGVIEW ESTATES HOA LONGVIEW DRIVE NORTH LIBERTY IA 52241-- (319)594-6307 SEMI-PUBLIC MINOR 8641 3126503 0081833 3/31/2024 LORAS COLLEGE 1450 ALTA VISTA DUBUQUE IA 52001-- (563)588-7011 INDUSTRIAL MINOR 8221 3100601 0063983 6/30/2018 LORE MOBILE HOME PARK STP 15462 LEWIS ROAD DUBUQUE IA 52002-- (319)582-0224 SEMI-PUBLIC MINOR 6515 8834001 0062910 9/30/2020 LORIMOR CITY OF STP 1130 FT. SOUTH & EAST OF INTERSECT. OF 1ST ST. & IOWA AVE. LORIMOR IA 50149--0125 (641)763-2297 MUNICIPAL MINOR 4952 3100608 0063827 7/30/2007 LOST CANYON MOBILE HOME PARK 12700 PINE VIEW DRIVE PEOSTA IA 52068- (563)588-1375 SEMI-PUBLIC MINOR 6515 2346001 0036544 5/31/2022 LOST NATION CITY OF STP SOUTH OF TOWN OFF OF 140TH AVE. LOST NATION IA 52254- (319)678-2443 MUNICIPAL MINOR 4952 3700105 0082066 4/30/2024 LOUIS DREYFUS COMPANY, GRAND JUNCTION, LLC 1149 U AVENUE GRAND JUNCTION IA 50107-- INDUSTRIAL MINOR 2869 5800901 0066117 6/24/2006 LOUISA CO. LAW ENFORCEMENT CENTER 12635 County Road G56 WAPELLO IA 52653-- (319)523-8365 SEMI-PUBLIC MINOR 8361 2500904 0079669 10/31/2024 LOUISE P. MOON ASR FACILITY 2860 NW 156TH STREET CLIVE IA 50325-- MUNICIPAL-WT MINOR 4941 7720201 0068438 3/31/2024 LOVE'S TRAVEL SHOP 411 11820 HICKMAN ROAD CLIVE IA 50325-- STORMWATER MINOR 5541 6858001 0027430 7/31/2023 LOVILIA CITY OF STP 6057 115TH TRAIL LOVILIA IA 50150- (641)891-1755 MUNICIPAL MINOR 4952 1656001 0047899 4/30/2022 LOWDEN CITY OF STP DEAD END OF YANKEE AVE, SOUTH OF TOWN LOWDEN IA 52255- (563)941-7705 MUNICIPAL MINOR 4952 5551001 0082571 2/28/2023 LU VERNE, CITY OF STP 2700 FEET WEST OF NORTH MAPLE & NORTH STREET INTERSECTION LU VERNE IA 50560-- MUNICIPAL MINOR 4952 2254001 0027685 7/31/2021 LUANA CITY OF STP 0.2 MILES NE OF BURGESS ST & CIRCLE DR INTERSECT. LUANA IA 52156- (563)539-2296 MUNICIPAL MINOR 4952 5915001 0072621 8/31/2022 LUCAS CITY OF STP (RATHBUN REGIONAL WATER ASSOCIATION) 0.4 MILES SE OF HWY 65 SOUTH & HWY 34 INTERSECTION LUCAS IA 50151-- (515)647-2416 MUNICIPAL MINOR 4952

10 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Facility Address Facility City Facility Facility Zip Facility Phone Permit Type Class. SIC State Code 3158001 0074781 11/30/2024 LUXEMBURG, CITY OF-STP 1500 FEET SOUTH OF CHURCH ST ON HIGHWAY 136 LUXEMBURG IA 52056--0093 (563)853-4615 MUNICIPAL MINOR 4952 7861300 0077691 2/28/2023 LV Feedlot, LLC 47622 Dogwood Road OAKLAND IA 51560-- (712)769-2464 AGRICULTURAL MINOR 0211 6200904 0074659 3/31/2022 LYNNDANA SEWER DISTRICT NE OF LYNNDANA LANE AT THE CURVE OSKALOOSA IA 52577- (641)673-7903 SEMI-PUBLIC MINOR 8641 5047001 0041971 11/30/2018 LYNNVILLE CITY OF STP 1/4 MILE E OF THE INTERSECTION OF 4TH ST & HWY T38 LYNNVILLE IA 50153- (641)527-2535 MUNICIPAL MINOR 4952 8400700 0080535 6/14/2014 LYON & SIOUX RWS BOYDEN SUBSYTEM WTP LYON & SIOUX RURAL WATER SYSTEM ROCK RAPIDS IA 51246-- MUNICIPAL-WT MINOR 4941 8133001 0020940 4/30/2022 LYTTON CITY OF STP CORNER OF 255TH ST. AND ELKLAND AVE., EAST OF TOWN LYTTON IA 50561- (712)466-2270 MUNICIPAL MINOR 4952 4100105 0004791 3/31/2026 M.G. WALDBAUM COMPANY - LAOP 1260 HWY 18 EAST BRITT IA 50423-- (641)843-3100 OPERATION MINOR 2015 8457177 0082449 5/31/2025 Maassen & Sons Combined Facility 4733 Hickory Ave. MAURICE IA 51036-- (712)441-0467 AGRICULTURAL MINOR 0211 5200906 0073580 4/30/2022 MACBRIDE SANITARY SEWER DISTRICT 4080-4000 ROSE DRIVE NE SOLON IA 52333- (319)331-0899 MUNICIPAL MINOR 4952 7841001 0042919 8/31/2021 MACEDONIA CITY OF STP 0.4 MILES S OF 395TH ST & HAMILTON ST INTERSECTION MACEDONIA IA 51549-- (712)486-2203 MUNICIPAL MINOR 4952 6134001 0079928 8/31/2024 MACKSBURG, CITY OF STP 0.25 Mile North of West North St. & West of Carriage Trail MACKSBURG IA 50801-- (641)782-5744 MUNICIPAL MINOR 4952 0848001 0028207 8/31/2026 MADRID CITY OF STP 712 WEST 4TH STREET MADRID IA 50156- (515)795-2412 MUNICIPAL MINOR 4952 7727126 0064076 3/31/2016 MAGELLAN PIPELINE COMPANY, L.P. 2503 SE 43rd St DES MOINES IA 50317-- INDUSTRIAL MINOR 4613 0000115 0076775 7/17/2022 MAGELLAN PIPELINE COMPANY, L.P. - BLANKET PERMIT MAGELLAN MIDSTREAM PARTNERS, L.P. DES MOINES IA 50327-- (515)265-2111 INDUSTRIAL MINOR 4613 1700122 0074411 1/16/2007 MAGELLAN PIPELINE COMPANY, LP 2810 MAIN AVENUE CLEAR LAKE IA 50428- (641)357-2124 INDUSTRIAL MINOR 4613 5159001 0078417 11/22/2009 MAHARISHI VEDIC CITY 1973 GRAND DRIVE FAIRFIELD IA 52556-- (641)470-7000 MUNICIPAL MINOR 4952 5100302 0072699 7/22/2003 Maharishi Vedic City - South 1973 GRAND DRIVE FAIRFIELD IA 52556-- (515)472-9580 MUNICIPAL MINOR 4952 5200306 0073733 10/31/2025 MAKADA SUBDIVISION-STP 1000ft EAST OF SYCAMORE RD & N OF SOCCER RD ACCESS IOWA CITY IA 52240- (319)466-0281 SEMI-PUBLIC MINOR 8641 7945001 0048011 5/31/2025 MALCOM CITY OF STP APPROX. 0.4 MILES EAST OF 1ST ST & MONTEZUMA ST MALCOM IA 50157--0066 (515)528-4245 MUNICIPAL MINOR 4952 7450001 0023370 12/31/2020 MALLARD CITY OF STP 490TH STREET, EAST OF TOWN MALLARD IA 50562- (712)425-3529 MUNICIPAL MINOR 4952 6545001 0058572 12/31/2024 MALVERN CITY OF STP SOUTH OF LYTLE AVE, SOUTHWEST OF TOWN MALVERN IA 51551- (712)624-8282 MUNICIPAL MINOR 4952 2839001 0021032 6/30/2026 MANCHESTER CITY OF STP 541 SOUTH BREWER STREET MANCHESTER IA 52057- (563)927-4010 MUNICIPAL MINOR 4952 3621100 0063568 9/30/2025 MANILDRA MILLING CORPORATION 100 GEORGE ST HAMBURG IA 51640- (712)382-2265 INDUSTRIAL MINOR 2046 2436001 0047368 7/31/2023 MANILLA CITY OF STP NORTHEAST OF RAILWAY STREET & X AVENUE INTERSECTION MANILLA IA 51454- (712)654-3003 MUNICIPAL MINOR 4952 9845001 0047830 6/30/2025 MANLY CITY OF STP 1671 HWY 9 EAST MANLY IA 50456- (515)454-2219 MUNICIPAL MINOR 4952 1457001 0023337 8/31/2022 MANNING CITY OF STP OFF OF 8TH ST., WEST SIDE OF TOWN MANNING IA 51455- (712)655-3380 MUNICIPAL MINOR 4952 1351001 0027189 6/30/2024 MANSON CITY OF STP OFF UDALL AVE. SOUTH OF TOWN MANSON IA 50563- (712)469-3759 MUNICIPAL MINOR 4952 1351000 0082651 2/28/2025 MANSON, CITY OF WTP 1015 13TH STREET MANSON IA 50563-- (712)469-3043 MUNICIPAL-WT MINOR 4941 1461001 0081639 7/31/2026 MAPLE RIVER JUNCTION STP 1/4 MILE NE OF MAPLE RIVER JUNCTION CARROLL IA 51401-- (712)792-4923 MUNICIPAL MINOR 4952 6727001 0021288 9/30/2022 MAPLETON CITY OF STP OFF OF SOUTH FRONT ST., WEST OF TOWN MAPLETON IA 51034- (712)881-1351 MUNICIPAL MINOR 4952 7000601 0066338 3/31/2018 MAPLEWOOD ESTATES 3097 M & W DRIVE MUSCATINE IA 52761- (563)263-5896 SEMI-PUBLIC MINOR 6515 4950001 0024481 5/31/2025 MAQUOKETA CITY OF STP NE OF THE INTERSECTION OF N MAIN ST & PERSHING RD MAQUOKETA IA 52060- (319)652-4881 MUNICIPAL MAJOR 4952 1150001 0067652 9/30/2025 MARATHON CITY OF STP 4568 200TH AVENUE MARATHON IA 50565-- (712)289-2261 MUNICIPAL MINOR 4952 3420001 0057207 4/30/2025 MARBLE ROCK CITY OF STP 0.05 MILES SOUTH OF MAIN STREET AND SOUTH STREET MARBLE ROCK IA 50653--0098 (641)315-2621 MUNICIPAL MINOR 4952 1838001 0036111 1/31/2025 MARCUS CITY OF STP 250 480TH STREET MARCUS IA 51035--0542 (712)376-4715 MUNICIPAL MINOR 4952 4843001 0047937 6/30/2026 MARENGO CITY OF STP OFF OF EAST SOUTH STREET, EAST OF TOWN MARENGO IA 52301- (319)642-3232 MUNICIPAL MINOR 4952 8456936 0079472 2/28/2023 Marion Rus Feedlot 3283 Dogwood Ave ROCK VALLEY IA 51247-- (712)476-2277 AGRICULTURAL MINOR 0211 5751002 0078689 8/31/2025 MARION, CITY OF MS4 1225 6TH AVE. MARION IA 52302-- (319)743-6340 STORMWATER MINOR 4952 9756759 0080098 11/30/2021 Mark Baldwin Feedlot 3846 245TH Street ANTHON IA 51004-- (712)373-5657 AGRICULTURAL MINOR 0211 7556898 0080446 11/30/2023 Mark Beitelspacher Feedlot 28279 130th Street LE MARS IA 51031-- (712)562-6341 AGRICULTURAL MINOR 0211 2256001 0059463 4/30/2022 MARQUETTE CITY OF STP 515 HWY 18 WEST MARQUETTE IA 52158-- (563)873-3386 MUNICIPAL MINOR 4952 8459758 0083810 7/31/2022 Mars Farms, Inc. 3917 410th Street ALTON IA 51003-- (712)737-8093 AGRICULTURAL MINOR 0211 6400901 0075973 6/30/2020 MARSHALL COUNTY LAW CENTER 2369 JESSUP AVE MARSHALLTOWN IA 50158-- (641)754-6380 SEMI-PUBLIC MINOR 9221 6469001 0038610 4/30/2021 MARSHALLTOWN CITY OF WATER POLLUTION CONTROL 1001 WOODLAND STREET MARSHALLTOWN IA 50158-- (641)754-5709 MUNICIPAL MAJOR 4952 6469000 0075345 12/31/2023 MARSHALLTOWN WATER TREATMENT PLANT 1957 NORTH CENTER STREET RD MARSHALLTOWN IA 50158- (641)753-7913 MUNICIPAL-WT MINOR 4941 6469002 0080039 7/31/2026 MARSHALLTOWN, CITY OF MS4 1001 Woodland Street MARSHALLTOWN IA 50158-- (641)754-5709 STORMWATER MINOR 4952 5737001 0062987 12/31/2022 MARTELLE CITY OF STP 0.5 MILES E OF MARTELLE & TAYLOR INTERSECTION MARTELLE IA 52305- (319)482-3211 MUNICIPAL MINOR 4952 9147001 0031836 9/30/2026 MARTENSDALE CITY OF STP 0.1 MILES EAST OF IOWA AVE & 40TH AVE INTERSECTION MARTENSDALE IA 50160- (641)764-2622 MUNICIPAL MINOR 4952 5452001 0078727 9/30/2026 MARTINSBURG, CITY OF STP WEST OF 180TH AVE. ONE MILE SOUTH OF TOWN MARTINSBURG IA 52568-- (641)472-6177 MUNICIPAL MINOR 4952 1750001 0057169 7/31/2026 MASON CITY, CITY OF STP 2950 SOUTH BIRCH DRIVE MASON CITY IA 50401- (641)421-3682 MUNICIPAL MAJOR 4952 1750000 0077305 2/29/2024 MASON CITY, CITY OF WTP 339 13TH STREET NE MASON CITY IA 50401-- (641)421-3683 MUNICIPAL-WT MINOR 4941 2843001 0077241 2/29/2024 MASONVILLE, CITY OF-STP GORDON ST. 1/4 MILE EAST OF LOCAL ST. MASONVILLE IA 50654- (563)927-2707 MUNICIPAL MINOR 4952 1558001 0048348 10/31/2021 MASSENA CITY OF STP 100 Main PO Box 109 MASSENA IA 50853- (712)779-2047 MUNICIPAL MINOR 4952 2900110 0075035 12/31/2021 MATTESON MARINE SERVICE, INC. BNSF RAILROAD YARD / FRONT STREET BURLINGTON IA 52601- (319)754-5318 INDUSTRIAL MINOR 1629 8458001 0023451 1/31/2022 MAURICE CITY OF STP 100 4TH STREET MAURICE IA 51036-- (712)567-5371 MUNICIPAL MINOR 4952 8557001 0041793 5/31/2026 MAXWELL CITY OF STP 901 1st STREET MAXWELL IA 50161- (515)387-8655 MUNICIPAL MINOR 4952 3350001 0025976 4/30/2024 MAYNARD CITY OF STP 0.6 MILES NW OF NEON RD AND 110TH ST INTERSECTION MAYNARD IA 50655- (563)637-2269 MUNICIPAL MINOR 4952 8552001 0051934 10/31/2017 MCCALLSBURG CITY OF STP 0.2 MILES SW OF LATROBE AVE & S 2ND ST INTERSECT MCCALLSBURG IA 50154- (515)434-2242 MUNICIPAL MINOR 4952 8258001 0057185 10/31/2024 MCCAUSLAND CITY OF STP PO BOX 277 MCCAUSLAND IA 52758-- (563)225-3600 MUNICIPAL MINOR 4952 2561103 0066982 8/31/2024 MCCREARY COMMUNITY BUILDING MUN. SWIMMING POOL 1800 PATTEE ST. PERRY IA 50220- (515)465-5621 INDUSTRIAL MINOR 7999 2258001 0028614 4/30/2022 MCGREGOR CITY OF STP 147 RIVER ROAD MCGREGOR IA 52157- (563)516-1120 MUNICIPAL MINOR 4952 8462015 0077844 10/31/2021 Meadowvale Dairy - North Site 1760 300TH STREET ROCK VALLEY IA 51247-- (712)476-2560 AGRICULTURAL MINOR 0241 8461393 0077852 12/5/2017 Meadowvale Dairy - South 1730 310th STREET ROCK VALLEY IA 51247-- (712)476-2560 AGRICULTURAL MINOR 0241 1667001 0022314 11/30/2021 MECHANICSVILLE CITY OF STP 620 125TH STREET MECHANICSVILLE IA 52306- (563)432-7756 MUNICIPAL MINOR 4952 2948001 0025917 2/29/2024 MEDIAPOLIS CITY OF STP 510 MAIN STREET MEDIAPOLIS IA 52637- (319)394-3127 MUNICIPAL MINOR 4952 6471001 0036552 5/31/2026 MELBOURNE CITY OF STP W of TOWN on GERHART AVE MELBOURNE IA 50162- (515)482-3338 MUNICIPAL MINOR 4952 6352001 0047783 10/31/2022 MELCHER-DALLAS CITY OF STP 2024 60TH AVENUE MELCHER-DALLAS IA 50062- (641)947-2388 MUNICIPAL MAJOR 4952 6868001 0076902 7/31/2016 MELROSE CITY OF STP (RATHBUN REGIONAL WATER ASSN) 0.4 MILES SE OF 225TH ST & KELLS AVE INTERSECT MELROSE IA 52569-- (641)647-2416 MUNICIPAL MINOR 4952 7234001 0083658 12/31/2022 MELVIN CITY OF STP 1/2 MILE N of 250TH STREET & STARLING INTERSECTION MELVIN IA 51350-- (712)262-8847 MUNICIPAL MINOR 4952 3956001 0071374 7/31/2021 MENLO CITY OF STP 1/4 MILE SOUTH OF 7TH STREET AND SHERMAN STREET MENLO IA 50164- (515)524-2411 MUNICIPAL MINOR 4952 7727801 0081477 11/30/2024 MERCYONE DES MOINES MEDICAL CENTER 1111 6th Ave. DES MOINES IA 50314-- (515)643-2282 INDUSTRIAL MINOR 8062 1849001 0020753 7/31/2019 MERIDEN CITY OF STP PO Box 272 MERIDEN IA 51037- (712)443-8352 MUNICIPAL MINOR 4952 7548001 0024538 1/31/2020 MERRILL CITY OF STP 0.3 MILES W OF 230TH ST & KESTREL AVE INTERSECTION MERRILL IA 51038- (712)938-2514 MUNICIPAL MINOR 4952 1754001 0076724 8/31/2021 MESERVEY, CITY OF-STP 1/4 MILE NORTH OF 100TH ST. AND CARDINAL AVE. MESERVEY IA 50457-- (641)421-3021 MUNICIPAL MINOR 4952 8748102 0075647 5/31/2022 MICHAEL FOODS, INC. 600 S. BROOKS ST. LENOX IA 50851-- (641)333-4700 INDUSTRIAL MINOR 2015 9700102 0004103 11/30/2022 MIDAMERICAN ENERGY - NEAL NORTH ENERGY CENTER 1151 260TH STREET SERGEANT BLUFF IA 51054-- INDUSTRIAL MAJOR 4911 9700106 0061859 8/31/2022 MIDAMERICAN ENERGY - NEAL SOUTH ENERGY CTR 2761 Port Neal Circle SALIX IA 51052-- (712)277-5287 INDUSTRIAL MAJOR 4911 8278101 0003611 12/14/2021 MIDAMERICAN ENERGY CO - RIVERSIDE STATION 6001 STATE STREET BETTENDORF IA 52722- (563)333-8501 INDUSTRIAL MAJOR 4911 5800105 0063282 3/31/2025 MIDAMERICAN ENERGY CO. - LOUISA STATION 8602 172ND STREET MUSCATINE IA 52761--9066 (712)352-5434 INDUSTRIAL MAJOR 4911 2952001 0025381 4/30/2021 MIDDLETOWN CITY OF STP 120 MECHANIC STREET MIDDLETOWN IA 52638-- (319)752-8340 MUNICIPAL MINOR 4952 4953001 0028606 8/31/2022 MILES CITY OF STP ENTRANCE BEGINS AT END OF CENTENNIAL ST MILES IA 52064-- (319)682-7618 MUNICIPAL MINOR 4952 3050000 0081299 12/31/2023 MILFORD WATER TREATMENT PLANT 1200 Q AVE MILFORD IA 51351-- OPERATION MINOR 4941 4852001 0077283 11/30/2017 MILLERSBURG CITY OF (POWESHIEK WATER ASSN) 1/2 MILE EAST OF MAIN ST. & FREMONT ST. INTERSECTI NORTH ENGLISH IA 52316-- (641)522-7416 MUNICIPAL MINOR 4952 9155001 0030511 5/31/2024 MILO CITY OF STP 0.1 MILE SW OF THE INTERSECTION OF ELM ST. & S. 5TH ST. MILO IA 50166- (515)942-6241 MUNICIPAL MINOR 4952 8954001 0058751 11/30/2017 MILTON CITY OF STP 0.5 MILE SOUTH OF HWY 2 & ROUTE V56 INTERSECTION MILTON IA 52570-- (515)656-4454 MUNICIPAL MINOR 4952 2547001 0023418 3/31/2022 MINBURN CITY OF STP 1/2 MILE WEST OF TOWN, NORTH OF MINBURN RD MINBURN IA 50167- (515)677-2245 MUNICIPAL MINOR 4952 7849001 0048330 6/30/2026 MINDEN CITY OF STP WEST OF THE INTERSECTION OF 340TH ST. AND TEAKWOOD RD. MINDEN IA 51553- (712)483-2991 MUNICIPAL MINOR 4952 6549001 0082082 7/31/2019 MINEOLA CITY OF STP approx 1/4 mile east of INTXN Railroad St & 8th St MINEOLA IA 51554-- MUNICIPAL MINOR 4952 5052001 0022276 12/31/2025 MINGO CITY OF STP EAST OF THE INTERSECTION OF IOWA 117 & E MAIN ST MINGO IA 50168- (515)363-4441 MUNICIPAL MINOR 4952

11 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Facility Address Facility City Facility Facility Zip Facility Phone Permit Type Class. SIC State Code 3100203 0052589 8/31/2021 MIRACLE CAR WASH 255 LOCUST ST. DUBUQUE IA 52001-- INDUSTRIAL MINOR 7542 0500103 0078166 6/30/2021 MISSOURI RIVER ENERGY SERVICES-EXIRA STATION 3429 JAY AVENUE, PO BOX 19 BRAYTON IA 50042--7526 INDUSTRIAL MINOR 4911 4344001 0026654 2/13/2012 MISSOURI VALLEY CITY OF STP CANAL ST. AND KIRLIN ST. MISSOURI VALLEY IA 51555- (712)642-3146 MUNICIPAL MINOR 4952 4344000 0080454 4/30/2024 MISSOURI VALLEY CITY OF WTP 303 NORTH ALBORN AVENUE MISSOURI VALLEY IA 51555-- (712)642-3146 MUNICIPAL-WT MINOR 4941 7751001 0021997 2/28/2022 MITCHELLVILLE CITY OF STP 206 COTTON AVENUE NW MITCHELLVILLE IA 50169- (515)967-6010 MUNICIPAL MAJOR 4952 9756524 0079294 7/31/2025 MJ Cattle Company 2595 County Rd D-25 HORNICK IA 51026-- (712)874-3380 AGRICULTURAL MINOR 0211 4347001 0081051 6/30/2019 MODALE, CITY OF STP 0.4 MILES NW OF INTERSECTION 270TH ST AND FOWLER AVE MODALE IA 51556--9998 (712)645-2601 MUNICIPAL MINOR 4952 5200605 0064874 8/31/2023 MODERN MANOR MOBILE HOME COURT 893 SPRING RIDGE DRIVE IOWA CITY IA 52246- (319)351-6794 SEMI-PUBLIC MINOR 6515 4349001 0023507 6/30/2007 MONDAMIN CITY OF STP ON FILLMORE AVE 1/4 MILE SOUTH OF IOWA HWY 127 MONDAMIN IA 51557- (712)646-2431 MUNICIPAL MINOR 4952 2264001 0036927 12/31/2021 MONONA CITY OF STP 20485 125th STREET MONONA IA 52159-- (563)539-2355 MUNICIPAL MINOR 4952 5054001 0041947 8/31/2025 MONROE CITY OF STP (EAST) EAST OF TOWN, NORTH OF RODEO AVE W MONROE IA 50170- (515)259-2319 MUNICIPAL MINOR 4952 7950001 0036935 8/31/2026 MONTEZUMA CITY OF STP 1950 FEET WEST OFF FRONT STREET; SW OF TOWN MONTEZUMA IA 50171--0314 (641)623-5617 MUNICIPAL MAJOR 4952 7950000 0084310 7/31/2024 Montezuma, City of WTP 1185 Diamond Trail Rd MONTEZUMA IA 50171-- (641)623-5675 MUNICIPAL-WT MINOR 4941 5343001 0026034 9/30/2021 MONTICELLO CITY OF STP 1105 E 1ST STREET MONTICELLO IA 52310- (319)465-3731 MUNICIPAL MAJOR 4952 8666001 0058700 11/30/2025 MONTOUR CITY OF STP 3174 EAST AVE MONTOUR IA 50173- (641)751-6277 MUNICIPAL MINOR 4952 7038901 0073890 4/30/2022 MONTPELIER SANITARY DISTRICT, VILLAGE OF P. O. BOX 10 MONTPELIER IA 52759- (319)381-2440 MUNICIPAL MINOR 4952 5650001 0030848 12/31/2025 MONTROSE CITY OF STP EAST 1ST ST & MAIN ST INTERSECTION MONTROSE IA 52639-- (319)463-5533 MUNICIPAL MINOR 4952 6731001 0062995 6/30/2023 MOORHEAD CITY OF STP 1/4 MILE S OF IOWA 183 & DOTUR DIAGONAL ST INTERSECT. MOORHEAD IA 51558- (712)886-5211 MUNICIPAL MINOR 4952 7864122 0083321 4/30/2026 Moran Beef #2 25794 Magnolia Rd. UNDERWOOD IA 51576-- (712)545-3512 AGRICULTURAL MINOR 0211 7856509 0079537 4/30/2026 Moran Beef, Inc. 25843 Old Lincoln Hwy HONEY CREEK IA 51542-- (712)545-3512 AGRICULTURAL MINOR 0211 0467001 0056693 4/30/2025 MORAVIA CITY OF STP SOUTH 1340 FEET of S. EAST STREET INTERSECTION ON 250TH AVENUE MORAVIA IA 52571- (641)724-9811 MUNICIPAL MINOR 4952 5857001 0059587 6/30/2023 MORNING SUN CITY OF STP 1/3 MILE WEST OF 173RD AVENUE & N 3RD STREET MORNING SUN IA 52640- (319)868-7936 MUNICIPAL MINOR 4952 6056614 0083828 7/31/2022 Moser Feedlot 2242 170th Street LARCHWOOD IA 51241-- (712)478-4052 AGRICULTURAL MINOR 0211 0472001 0020851 10/31/2025 MOULTON CITY OF STP 611 EAST 8TH. MOULTON IA 52572-- (641)642-3328 MUNICIPAL MINOR 4952 0650001 0059153 8/31/2020 MOUNT AUBURN CITY OF STP SOUTHEAST OF 53RD ST & COMMERCIAL ST INTERSECTION MOUNT AUBURN IA 52313- (319)475-2374 MUNICIPAL MINOR 4952 8055001 0023574 1/31/2024 MOUNT AYR CITY OF STP 1/3 MILE SOUTH OF HIGHWAY 169 ON WEST STREET MOUNT AYR IA 50854- (641)464-2404 MUNICIPAL MINOR 4952 4453002 0070009 8/31/2023 MOUNT PLEASANT CITY OF STP (EAST) ENTRANCE OFF 215TH ST NORTHEAST OF US HWY 218 MOUNT PLEASANT IA 52641-- (319)385-1482 MUNICIPAL MINOR 4952 4453001 0047970 5/31/2024 MOUNT PLEASANT CITY OF STP (MAIN) 2699 HOOVER AVE MOUNT PLEASANT IA 52641- (319)385-1482 MUNICIPAL MAJOR 4952 8958001 0076651 4/30/2022 MOUNT STERLING, CITY OF STP INTERSECTION OF 1ST & HICKORY STREETS MOUNT STERLING IA 52573-- (641)472-6177 MUNICIPAL MINOR 4952 4455001 0082881 7/31/2022 MOUNT UNION CITY OF (RUSS) 1697 RACINE ROAD MOUNT UNION IA 52644-- MUNICIPAL MINOR 4952 5758001 0023710 6/30/2025 MOUNT VERNON CITY OF STP 103 COUNTRY CLUB DRIVE MOUNT VERNON IA 52314- (319)895-6724 MUNICIPAL MAJOR 4952 9753001 0042943 10/31/2024 MOVILLE CITY OF STP CORNER OF HWY 140 AND 160TH STREET, SOUTH OF TOWN MOVILLE IA 51039- (712)873-3545 MUNICIPAL MINOR 4952 8222603 0068012 3/31/2024 MT. JOY MOBILE HOME PARK 21445 SCOTT PARK ROAD DAVENPORT IA 52807-- (319)391-4774 SEMI-PUBLIC MINOR 6515 5500106 0073784 7/31/2025 MURPHY FARMS, LLC 2120 90TH AVE ALGONA IA 50511-- (515)295-7759 INDUSTRIAL MINOR 2048 2032001 0063304 12/31/2023 MURRAY CITY OF STP 2600 FEET WEST ON DEWEY ST. FROM 135th AVE. INTERSECTION MURRAY IA 50174-- (641)447-2522 MUNICIPAL MINOR 4952 7048001 0023434 3/31/2025 MUSCATINE CITY OF STP 1202 MUSSER STREET MUSCATINE IA 52761-- (563)263-2752 MUNICIPAL MAJOR 4952 7000109 0082708 1/18/2015 MUSCATINE POWER & WATER CCR LANDFILL 1802 250TH STREET LETTS IA 52754-- (563)263-2631 INDUSTRIAL MINOR 4953 7048106 0001082 2/28/2018 MUSCATINE POWER AND WATER 1700 DICK DRAKE WAY MUSCATINE IA 52761--0075 (563)262-3394 INDUSTRIAL MAJOR 4911 8456553 0084263 10/31/2023 Myron Gradert Feedlot 2220 450th Street IRETON IA 51027-- (712)278-2090 AGRICULTURAL MINOR 0211 0477001 0071064 12/31/2015 MYSTIC CITY OF STP NW OF 490TH STREET AND 190TH AVE MYSTIC IA 52574--0069 (641)647-2243 MUNICIPAL MINOR 4952 1967001 0024503 9/30/2022 NASHUA CITY OF STP 1021 JAY ST NASHUA IA 50658- (641)435-4156 MUNICIPAL MINOR 4952 3126801 0080331 6/30/2025 NATIONAL MISSISSIPPI RIVER MUSEUM AND AQUARIUM 350 E 3RD ST DUBUQUE IA 52001-- (563)557-9545 INDUSTRIAL MINOR 8412 5800107 0058262 2/28/2018 NATURAL GAS PIPELINE CO OF AMERICA #204 21864 120TH STREET COLUMBUS JUNCTION IA 52738- (319)728-2208 INDUSTRIAL MINOR 4922 5800109 0081701 7/31/2026 NATURAL GAS PIPELINE COMPANY OF AMERICA - SWD #1 WELL 21864 120TH STREET COLUMBUS JUNCTION IA 52738-- OPERATION MINOR 4922 5800108 0075485 7/31/2026 NATURAL GAS PIPELINE COMPANY OF AMERICA - A. GRIFFIN M-1 WELL 21864 120TH STREET COLUMBUS JUNCTION IA 52738-- (319)728-2208 OPERATION MINOR 4922 0709801 0080047 1/31/2019 NAZARETH LUTHERAN CHURCH 7401 UNIVERSITY AVENUE CEDAR FALLS IA 50613-- (319)266-7589 INDUSTRIAL MINOR 8661 7853001 0021041 10/31/2023 NEOLA CITY OF STP 750' S OF INTERSECTION OF FRONT & 5TH ST NEOLA IA 51559-- (712)485-2298 MUNICIPAL MINOR 4952 9433109 0064866 10/31/2021 NESTLE PURINA PETCARE 2400 5TH AVENUE SOUTH FORT DODGE IA 50501 (515)574-5219 INDUSTRIAL MINOR 2047 8562001 0031704 10/31/2021 NEVADA CITY OF STP 1209 6TH STREET NEVADA IA 50201--0530 (515)382-2621 MUNICIPAL MAJOR 4952 0370001 0026611 6/30/2022 NEW ALBIN CITY OF STP OFF OF MAIN STREET, NE CORNER OF TOWN NEW ALBIN IA 52160- (319)544-4260 MUNICIPAL MINOR 4952 3500204 0052983 9/30/2023 NEW COOPERATIVE, INC. 1389 WRIGHT AVE. ROWAN IA 50470-- (641)853-2201 INDUSTRIAL MINOR 5153 1970001 0028525 5/31/2024 NEW HAMPTON CITY OF STP 800 SOUTH LOCUST AVENUE NEW HAMPTON IA 50659-- (641)399-5906 MUNICIPAL MAJOR 4952 1271001 0056880 4/30/2023 NEW HARTFORD CITY OF STP OFF OF VAIL AVE., NE OF TOWN NEW HARTFORD IA 50660- (319)983-2703 MUNICIPAL MINOR 4952 9800114 0052535 2/14/2021 NEW HEAVEN CHEMICALS IOWA LLC - SMO MANUFACTURING PLANT 1585 380TH ST. MANLY IA 50456-- INDUSTRIAL MINOR 2869 8264001 0075221 9/30/2022 NEW LIBERTY, CITY OF-STP 1/8 MILE NORTH OF 280TH ST. 1/4 MILE EAST OF TOWN NEW LIBERTY IA 52765- (563)843-2374 MUNICIPAL MINOR 4952 4458001 0025941 10/31/2021 NEW LONDON CITY OF STP 200 NIXON DRIVE NEW LONDON IA 52645- (319)572-4271 MUNICIPAL MINOR 4952 8758001 0033049 5/31/2015 NEW MARKET CITY OF STP 1/4 MILE EAST OF TOWN ON 5TH STREET NEW MARKET IA 51646- (712)585-3479 MUNICIPAL MINOR 4952 4271001 0028193 5/31/2018 NEW PROVIDENCE CITY OF STP 1/8th MILE N. OF 300th ST. & Q AVE. INTERSECTION NEW PROVIDENCE IA 50206-- (641)486-5322 MUNICIPAL MINOR 4952 6264001 0032417 6/30/2025 NEW SHARON CITY OF STP 1/4 MILE WEST OF HWY 63 BETWEEN 140TH ST AND 135TH ST NEW SHARON IA 50207- (515)637-4124 MUNICIPAL MINOR 4952 3165001 0027391 9/30/2016 NEW VIENNA CITY OF STP 1/4 MILE SW OF WASHINGTON ST & JEFFERSON ST INTERS NEW VIENNA IA 52065- (563)921-2295 MUNICIPAL MINOR 4952 9159901 0058891 8/31/2023 NEW VIRGINIA SANITARY DISTRICT-STP SOUTHWEST OF G57 (AKA WEST STREET) NEW VIRGINIA IA 50210--0214 (641)449-3435 MUNICIPAL MINOR 4952 1155001 0021989 6/30/2021 NEWELL, CITY OF STP 1/2 MILE EAST OF TOWN, SOUTH OF PRAIRIE CREEK NEWELL IA 50568--0315 (712)272-4410 MUNICIPAL MINOR 4952 0653001 0043664 9/30/2022 NEWHALL CITY OF STP 0.4 MILES NE OF 26TH AVE & 71ST STREET INTERSECT NEWHALL IA 52315-- (319)223-5709 MUNICIPAL MINOR 4952 5059002 0027723 7/31/2025 NEWTON CITY OF STP 1915 EAST 5TH STREET SOUTH NEWTON IA 50208- (641)792-3422 MUNICIPAL MAJOR 4952 5700104 0003727 2/28/2021 NEXTERA ENERGY DUANE ARNOLD, LLC 3277 DAEC ROAD PALO IA 52324- (319)851-7606 INDUSTRIAL MAJOR 4911 7052001 0036561 3/31/2022 NICHOLS CITY OF STP OFF OF HWY 70, SE OF TOWN NICHOLS IA 52766- (319)627-2170 MUNICIPAL MINOR 4952 0260001 0040231 5/31/2026 NODAWAY CITY OF (SIRWA) 0.3 MILES W OF INTERSECTION OF 2ND ST & 11TH AVE NODAWAY IA 50857- (712)785-3261 MUNICIPAL MINOR 4952 3423001 0032778 6/30/2025 NORA SPRINGS CITY OF STP SOUTHEAST OF TOWN NORA SPRINGS IA 50458- (641)749-2612 MUNICIPAL MINOR 4952 6058902 0084093 12/31/2023 Norm Cleveringa Feedlot 2642 Elmwood Avenue ROCK VALLEY IA 51247-- (712)476-5764 AGRICULTURAL MINOR 0211 4858001 0034282 9/30/2021 NORTH ENGLISH CITY OF STP 2234 335th ST NORTH ENGLISH IA 52316- (319)664-3810 MUNICIPAL MINOR 4952 5252001 0032905 10/31/2025 NORTH LIBERTY CITY OF STP 405 ABIGAIL AVE NORTH LIBERTY IA 52317- (319)626-5738 MUNICIPAL MAJOR 4952 5252003 0078794 8/31/2024 NORTH LIBERTY, CITY OF MS4 PO BOX 77 NORTH LIBERTY IA 52317-- (319)626-5700 STORMWATER MINOR 4952 7705500 0063321 3/31/2022 NORTH POLK COMMUNITY SCHOOL DISTRICT 700 FT SW OF THE END OF NE 141ST ALLEMAN IA 50007-- (515)984-3400 SEMI-PUBLIC MINOR 8211 7856255 0077666 1/31/2025 North Ridge Feedlot (Formerly Rolling B Farms) 25597 310TH STREET NEOLA IA 51559-- (402)630-0177 AGRICULTURAL MINOR 0211 5500501 0078115 10/31/2021 NORTH UNION COMMUNITY SCHOOL DISTRICT 308 310TH STREET FENTON IA 50539-- (515)889-2261 SEMI-PUBLIC MINOR 8211 3100611 0066290 11/30/2025 NORTHEND MOBILE HOME PARK 17448 S JOHN DEERE RD DUBUQUE IA 52001-- (319)583-6677 SEMI-PUBLIC MINOR 6515 2500122 0077038 2/28/2022 NORTHERN NATURAL GAS - UNDERGROUND INJECTION WELL 44282 G AVENUE REDFIELD IA 50233-- (515)226-2011 OPERATION MINOR 4922 7800100 0004391 6/30/2024 NORTHERN NATURAL GAS CO. OAKLAND STATION 46299 HWY 6 OAKLAND IA 51560-- (712)482-6108 INDUSTRIAL MINOR 4922 0800101 0046957 10/31/2023 NORTHERN NATURAL GAS CO. OGDEN STATION 608 210th Street OGDEN IA 50212-- (515)226-2030 INDUSTRIAL MINOR 4922 2500103 0000299 9/30/2025 NORTHERN NATURAL GAS CO. REDFIELD STATION 24282 G AVENUE REDFIELD IA 50233-- (515)226-2011 INDUSTRIAL MINOR 4922 4100100 0064327 7/31/2025 NORTHERN NATURAL GAS CO. VENTURA STATION 2415 270TH ST GARNER IA 50438- (641)829-3838 INDUSTRIAL MINOR 4922 4100115 0052829 3/13/2024 NORTHERN NATURAL GAS CO., GARNER - LAOP 2315 YALE AVE. GARNER IA 50438-- OPERATION MINOR 4922 9855001 0032395 4/30/2023 NORTHWOOD CITY OF STP 1401 10TH STREET SOUTH NORTHWOOD IA 50459--1584 (641)324-1075 MUNICIPAL MINOR 4952 9164002 0078913 12/31/2024 NORWALK, CITY OF MS4 705 NORTH AVE. NORWALK IA 50211-- (515)981-0228 STORMWATER MINOR 4952 0656001 0036943 6/30/2025 NORWAY CITY OF STP 1/2 MILE EAST OF TOWN ON RAILROAD ST/30TH AVE NORWAY IA 52318- (319)227-7351 MUNICIPAL MINOR 4952 7820106 0046752 10/31/2024 NUSTAR COUNCIL BLUFFS TERMINAL 825 TANK FARM RD COUNCIL BLUFFS IA 51503-- (316)241-9252 INDUSTRIAL MINOR 4613 7856376 0080144 8/31/2026 NVF Co, LLC 41556 Cottonwood Road CARSON IA 51525-- (712)484-3314 AGRICULTURAL MINOR 0211 6056581 0053137 9/30/2024 NW Iowa Feeders LLP 3388 140th Street ROCK RAPIDS IA 51246-- (712)330-1728 AGRICULTURAL MINOR 0211 2900301 0075469 1/31/2026 OAK HILLS SUBDIVISION-STP 10868 50TH STREET BURLINGTON IA 52601- (319)457-1191 SEMI-PUBLIC MINOR 8641

12 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Facility Address Facility City Facility Facility Zip Facility Phone Permit Type Class. SIC State Code 5500300 0065242 9/30/2020 OAK LAKE MAINTENANCE, INC. 80 OAK LAKE DRIVE ALGONA IA 50511- (515)295-9256 SEMI-PUBLIC MINOR 6552 7856001 0033448 9/30/2024 OAKLAND CITY OF STP APPROX. 0.58 MILES S OF INTERSECT OF HONEYSUCKLE RD AND 408TH ST OAKLAND IA 51560- (712)482-6811 MUNICIPAL MINOR 4952 7856000 0081523 11/30/2019 OAKLAND CITY OF WTP 206 NORTH MAIN STREET OAKLAND IA 51560-- (712)482-6811 MUNICIPAL-WT MINOR 4941 5868001 0073601 9/30/2022 OAKVILLE CITY OF STP B AVENUE, NE OF TOWN OAKVILLE IA 52646- (319)766-2981 MUNICIPAL MINOR 4952 7239001 0035068 10/31/2017 OCHEYEDAN CITY OF STP 170TH ST AND TRUMAN OCHEYEDAN IA 51354- (712)758-3602 MUNICIPAL MINOR 4952 7100700 0052702 12/31/2023 OCRWS SOUTH WATER TREATMENT PLANT 6793 IOWA HWY 10 SUTHERLAND IA 51058-- (712)735-6795 MUNICIPAL-WT MINOR 4941 8144001 0032506 6/30/2022 ODEBOLT CITY OF STP SE CORNER OF INTERSECTION OF DEAN AVE & HWY 175 ODEBOLT IA 51458-- (712)668-2669 MUNICIPAL MINOR 4952 3353001 0032344 5/31/2026 OELWEIN CITY OF STP 500 9TH AVE. SW OELWEIN IA 50662- (319)283-1413 MUNICIPAL MAJOR 4952 0858001 0041904 8/31/2025 OGDEN CITY OF STP 722 COUNTY E51 RD OGDEN IA 50212-- (515)275-2876 MUNICIPAL MAJOR 4952 7565053 0080802 2/28/2023 Ohlendorf Feeders 48135 C38 REMSEN IA 51050-- (712)376-4616 AGRICULTURAL MINOR 0211 4465001 0074560 6/30/2025 OLDS MUNICIPAL UTILITIES 0.1 MILES E OF US HWY 218 AND SCHOOL AVE INTERSECT OLDS IA 52647-- (319)254-8800 MUNICIPAL MINOR 4952 5355001 0036064 8/31/2021 OLIN CITY OF STP 0.6 MILES E OF MAPLE ST & HENDERSON ST INTERSECTION OLIN IA 52320-- (319)484-2875 MUNICIPAL MINOR 4952 5460001 0083801 2/29/2020 OLLIE, CITY OF STP 31931 270th AVE. OLLIE IA 52576-- MUNICIPAL MINOR 4952 3056332 0077534 4/30/2025 Olson Farm, Inc 2830 270th St DICKENS IA 51333-- (712)853-6460 AGRICULTURAL MINOR 0211 6739001 0036145 4/27/2008 ONAWA CITY OF STP OFF OF 6TH ST., SOUTH SIDE OF TOWN ONAWA IA 51040- (712)433-1181 MUNICIPAL MINOR 4952 5358001 0057134 10/31/2022 ONSLOW CITY OF STP 0.35 MILES E OF WYOMING AVE & MAIN ST INTERSECTION ONSLOW IA 52321- (563)485-2703 MUNICIPAL MINOR 4952 0900902 0070751 4/30/2016 ORAN COMMUNITY SANITATION DISTRICT INTERSECTION OF COUNTY V62 & 240TH STREET ORAN IA 50664-- (319)638-5691 MUNICIPAL MINOR 4952 8474001 0032751 1/26/2009 ORANGE CITY CITY OF STP 0.2 MILES S. OF IRONWOOD AVE & HWY 10 INTERSECTION ORANGE CITY IA 51041- (712)707-4885 MUNICIPAL MAJOR 4952 8474000 0077496 12/16/2013 ORANGE CITY, CITY OF WTP 125 CENTRAL AVE SE ORANGE CITY IA 51041- (712)707-4885 MUNICIPAL-WT MINOR 4941 6658001 0064271 4/30/2017 ORCHARD CITY OF STP 1/4 MILE SOUTH OF TOWN WEST OF NOBLE AVE. ORCHARD IA 50460- (641)330-6411 MUNICIPAL MINOR 4952 0160001 0074535 7/28/2014 ORIENT STP (SIRWA) PINEWOOD AVE & 305TH ST ORIENT IA 50858- (641)782-5744 MUNICIPAL MINOR 4952 6663001 0032956 4/30/2024 OSAGE CITY OF STP OFF OF 357TH STREET, WEST OF TOWN OSAGE IA 50461--0029 (641)732-5828 MUNICIPAL MAJOR 4952 2038002 0041815 3/31/2026 OSCEOLA CITY OF STP 1986 COUNTRY CLUB RD OSCEOLA IA 50213- (641)342-4363 MUNICIPAL MAJOR 4952 2038003 0082953 6/30/2025 OSCEOLA CITY OF WTP 2114 W. CLAY STREET OSCEOLA IA 50213-- (641)342-2206 MUNICIPAL-WT MINOR 4941 7856100 0065111 5/31/2024 OSI INDUSTRIES, LLC 21876 N HWY 59 OAKLAND IA 51560-- (712)482-6640 INDUSTRIAL MINOR 2013 6273001 0038539 3/31/2026 OSKALOOSA CITY OF STP (NORTHEAST) 2295 235TH ST. OSKALOOSA IA 52577- (641)673-7472 MUNICIPAL MAJOR 4952 6273002 0038521 3/31/2026 OSKALOOSA CITY OF STP (SOUTHWEST) 2632 KENT AVENUE OSKALOOSA IA 52577- (641)673-5433 MUNICIPAL MAJOR 4952 9677003 0042781 9/3/2006 OSSIAN CITY OF STP OFF OF COUNTY RD. B32, WEST OF TOWN OSSIAN IA 52161- (563)532-9465 MUNICIPAL MINOR 4952 9464001 0032948 10/31/2019 OTHO CITY OF STP NORTH END OF HAYES STREET OTHO IA 50569--0160 (515)972-4441 MUNICIPAL MINOR 4952 9758001 0065811 6/30/2022 OTO CITY OF STP NORTH OF TOWN NEAR HWY 31 & LENOX AVE INTERSECT OTO IA 51044- (712)827-4522 MUNICIPAL MINOR 4952 9083001 0058611 6/30/2023 OTTUMWA CITY OF STP 2222 S EMMA ST OTTUMWA IA 52501--3508 (641)683-0641 MUNICIPAL MAJOR 4952 9083000 0000035 4/30/2021 OTTUMWA WATER WORKS, CITY OF 230 TURNER DRIVE OTTUMWA IA 52501-- (641)684-4606 MUNICIPAL-WT MINOR 4941 9083003 0078972 2/28/2025 OTTUMWA, CITY OF MS4 105 E. THIRD ST. OTTUMWA IA 52501-- (641)683-0680 STORMWATER MINOR 4952 5260001 0032531 12/31/2025 OXFORD CITY OF STP SOUTHEAST OF TOWN OFF 295TH STREET NW OXFORD IA 52322- (319)828-4742 MUNICIPAL MINOR 4952 5361001 0032450 9/30/2021 OXFORD JUNCTION CITY OF STP SE OF 1ST AVE S & COUNTY X64 INTERSECTION OXFORD JUNCTION IA 52323-- (563)826-2400 MUNICIPAL MINOR 4952 5260000 0082252 7/6/2014 OXFORD WATER TREATMENT PLANT 2448 CEMETARY ROAD NW OXFORD IA 52322-- MUNICIPAL-WT MINOR 4941 7561001 0032336 4/30/2023 OYENS CITY OF STP 160TH ST. 0.4 MILES EAST OF OYENS AVE. OYENS IA 51045- (712)786-5547 MUNICIPAL MINOR 4952 5161001 0057819 1/14/2007 PACKWOOD CITY OF STP 1/2 MILE EAST OF INTERSECTION OF CHICAGO ST AND CHURCH ST PACKWOOD IA 52580- (319)695-3601 MUNICIPAL MINOR 4952 7622001 0079308 10/31/2022 PALMER, CITY OF STP 27110 600TH STREET PALMER IA 50571--0175 (712)359-2430 MUNICIPAL MINOR 4952 8355001 0071455 12/31/2023 PANAMA CITY OF STP 1543 HWY 191 PANAMA IA 51562- (712)489-2344 MUNICIPAL MINOR 4952 8355000 0082856 8/31/2025 PANAMA CITY OF WTP 0.5 MILES NORTH OF PANAMA ON HIGHWAY 191 PANAMA IA 51562-- (712)489-2344 MUNICIPAL-WT MINOR 4941 3971001 0057045 3/31/2022 PANORA CITY OF STP 0.2 MILES SW OF THE E SOUTH ST & E 3RD ST INTERSEC PANORA IA 50216- (641)755-2164 MUNICIPAL MINOR 4952 6368301 0075434 4/30/2022 PARK HILLS WASTEWATER FACILITY 1578 ELK HORN DR. OTLEY IA 50214- (641)792-7011 MUNICIPAL MINOR 4952 8200902 0062561 4/30/2023 PARK VIEW SANITARY DIST. STP 12-A GROVE ROAD ELDRIDGE IA 52748- (563)285-7397 MUNICIPAL MINOR 4952 6900100 0004693 3/31/2023 PARKER-HANNIFIN CORPORATION 1867 State Highway 48 RED OAK IA 51566 (712)623-4901 INDUSTRIAL MINOR 3052 1281001 0058831 3/31/2022 PARKERSBURG CITY OF STP EAST NORTHSITE RD PARKERSBURG IA 50665- (319)404-9923 MUNICIPAL MINOR 4952 0400302 0053188 2/28/2025 PARKSIDE KNOLLS HOA 12262 PARKSIDE DR. MORAVIA IA 52571-- (614)777-3524 SEMI-PUBLIC MINOR 8641 5200603 0068349 9/30/2025 PARKVIEW MOBILE HOME COURT 1813 L. OLD HWY 6 RD. N.W. OXFORD IA 52322- (319)545-2800 SEMI-PUBLIC MINOR 6515 4863001 0071188 4/30/2022 PARNELL CITY OF STP 1/4 mile west of Boland Ave. South of Hwy 149 PARNELL IA 52325- (319)378-8406 MUNICIPAL MINOR 4952 3748001 0060321 10/31/2022 PATON CITY OF STP SOUTH ON SOUTH MAIN STREET PATON IA 50217- (515)968-4557 MUNICIPAL MINOR 4952 6151001 0062961 3/31/2022 PATTERSON CITY OF STP OFF HWY 92, EAST OF TOWN PATTERSON IA 50218- (515)462-4085 MUNICIPAL MINOR 4952 2200102 0080624 2/28/2023 PATTISON SAND CO., LLC 703 FIRST ST. CLAYTON IA 52049-- (563)964-2651 INDUSTRIAL MINOR 1446 7257895 0053072 4/30/2024 Paul Feldkamp 5615 170th Street SIBLEY IA 51249-- AGRICULTURAL MINOR 0211 7139001 0032352 3/31/2022 PAULLINA CITY OF STP SE OF TOWN ON EAST DAY ST. PAULLINA IA 51046- (712)949-3428 MUNICIPAL MINOR 4952 1716107 0081108 11/1/2012 PAYLESS FOODS 20 SOUTH 4TH STREET CLEAR LAKE IA 50248-- (641)357-2167 INDUSTRIAL MINOR 5411 5100501 0052961 7/31/2024 PEKIN COMMUNITY SCHOOL DISTRICT 1062 BIRCH AVE. PACKWOOD IA 52580-- (319)695-3705 SEMI-PUBLIC MINOR 8211 6368006 0043869 8/31/2021 PELLA CITY OF STP 2269 ILLINOIS DRIVE PELLA IA 50219- (641)628-3800 MUNICIPAL MAJOR 4952 6368000 0075001 2/28/2022 PELLA WATER TREATMENT PLANT 1301 UNIVERSITY STREET PELLA IA 50219- (641)628-2464 MUNICIPAL-WT MINOR 4941 2800901 0065854 1/31/2016 PENN CENTER, INC. 2337 245TH STREET DELHI IA 52223- (563)922-2881 SEMI-PUBLIC MINOR 8051 3150000 0075507 7/31/2019 PEOSTA, CITY OF STP 1 MILE WEST OF PEOSTA STREET ON KAPP DRIVE. PEOSTA IA 52068--0065 (563)556-8755 MUNICIPAL MINOR 4952 7780101 0081035 2/28/2025 PEPSI BEVERAGES COMPANY 3825 106TH STREET URBANDALE IA 50322-- (515)270-1332 INDUSTRIAL MINOR 2086 8400100 0004235 5/19/2025 PERDUE PREMIUM MEAT CO. AKA SIOUX PREME PACKING CO. - LAOP 4241 US 75 AVE SIOUX CENTER IA 51250--0255 (712)722-2555 OPERATION MINOR 2011 2835101 0072877 12/31/2023 PERMEATE REFINING 205 LOCUST STREET HOPKINTON IA 52237-- (563)926-2119 INDUSTRIAL MINOR 2869 2561001 0032379 10/4/2010 PERRY CITY OF STP 1419 IVY PLACE PERRY IA 50220- (515)465-4092 MUNICIPAL MAJOR 4952 4360001 0073881 1/31/2016 PERSIA STP (REGIONAL WATER INC.) HIGHWAY 191 & 305TH ST PERSIA IA 51563- (712)343-2413 MUNICIPAL MINOR 4952 2853001 0079740 8/31/2026 PETERSBURG, CITY OF STP (EIRUSS) 1678 300TH AVENUE DYERSVILLE IA 52069-- MUNICIPAL MINOR 4952 1156419 0079201 9/30/2025 Peterson Cattle Company 2070 510TH STREET ALBERT CITY IA 50510-- (712)843-5755 AGRICULTURAL MINOR 0211 2154002 0033677 2/28/2023 PETERSON CITY OF STP 1/3 MILE EAST OF WALNUT & HWY 10 INTERSECTION PETERSON IA 51047-- (712)295-6401 MUNICIPAL MINOR 4952 9757143 0079316 8/31/2025 Peterson Feedlot - Whiskey Creek 1739 Charles Ave. LAWTON IA 51030-- (712)943-5304 AGRICULTURAL MINOR 0211 2756899 0080861 12/13/2017 Petty Custom Cattle Feeding 25146 Nature Rd LEON IA 50144-- (641)442-5626 AGRICULTURAL MINOR 0211 7856795 0080314 4/30/2022 Pheasant Ridge Farm, Inc. 25889 IDLEWOOD ROAD UNDERWOOD IA 51576-- (712)566-2054 AGRICULTURAL MINOR 0211 9766002 0033685 3/31/2016 PIERSON CITY OF STP 1162 Minnesota Ave PIERSON IA 51048-- (712)375-5015 MUNICIPAL MINOR 4952 8600402 0074977 11/30/2017 PILGRIM HEIGHTS RETREAT CENTER-STP 3005 E AVE MONTOUR IA 50173- (641)492-6165 SEMI-PUBLIC MINOR 7032 0862001 0058530 6/30/2024 PILOT MOUND CITY OF STP 1/2 MILE NW OF PILOT ST AND 140TH ST INTERSECTION PILOT MOUND IA 50223-- (515)353-4340 MUNICIPAL MINOR 4952 8200202 0076007 2/29/2024 PILOT TRAVEL CENTER #043 3500 N PLAINVIEW RD WALCOTT IA 52773- (563)284-4100 INDUSTRIAL MINOR 5541 7900209 0078361 8/31/2024 PILOT TRAVEL CENTER #495 4126 HIGHWAY 21 BROOKLYN IA 44711- (319)685-4188 SEMI-PUBLIC MINOR 5541 1600201 0069043 3/31/2016 PILOT TRAVEL CENTERS #496 2086 ATALISSA ROAD ATALISSA IA 52720- (865)474-2826 SEMI-PUBLIC MINOR 5541 4364001 0057827 1/31/2023 PISGAH CITY OF STP 1250 FEET SW OF JACKSON ST. & FRONT ST. INTERSECTION PISGAH IA 51564- (712)456-2408 MUNICIPAL MINOR 4952 9756576 0080683 6/30/2021 Pithan Feedlots, Inc. 2889 220th Street ANTHON IA 51004-- (712)490-1730 AGRICULTURAL MINOR 0211 0960001 0033693 12/31/2022 PLAINFIELD CITY OF STP 101 1ST STREET PLAINFIELD IA 50666- (319)276-3086 MUNICIPAL MINOR 4952 0484001 0080845 2/28/2025 PLANO, IOWA-ADLM-FMS 820 1ST STREET PLANO IA 52581-- (641)437-1909 MUNICIPAL MINOR 4952 4200122 0079138 2/28/2022 PLCP, L.P. 33371 170TH STREET STEAMBOAT ROCK IA 50672-- (641)868-2676 INDUSTRIAL MINOR 2869 7767002 0078751 11/30/2024 PLEASANT HILL, CITY OF MS4 5160 MAPLE DRIVE, SUITE A PLEASANT HILL IA 50327--8494 (515)262-9368 STORMWATER MINOR 4952 5171001 0082554 8/31/2015 PLEASANT PLAIN CITY OF STP (RUSS) 1 MILE EAST OF PLEASANT PLAIN ON 110TH STREET BRIGHTON IA 52540-- (641)209-1011 MUNICIPAL MINOR 4952 7900208 0078018 8/31/2022 PLEASANT STAY INN & SUITES 4130 HWY 21 BROOKLYN IA 52211-- (319)685-4500 SEMI-PUBLIC MINOR 7011 6377001 0035921 7/31/2022 PLEASANTVILLE CITY OF STP 1001 W. JASPER PLEASANTVILLE IA 50225--0566 (515)848-3316 MUNICIPAL MINOR 4952 1759001 0033383 7/31/2023 PLYMOUTH CITY OF STP 19683 325th St. PLYMOUTH IA 50464-- (641)696-3363 MUNICIPAL MINOR 4952 7500115 0081248 9/30/2018 PLYMOUTH ENERGY, LLC 22056 K42 MERRILL IA 51038-- (712)938-2373 INDUSTRIAL MINOR 2869 5600108 0070602 2/28/2022 PNB PROCESSORS, L.L.C. 3317 OLD QUARRY ROAD WEVER IA 52658-- (319)528-6153 OPERATION MINOR 3274

13 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Facility Address Facility City Facility Facility Zip Facility Phone Permit Type Class. SIC State Code 7633001 0035173 2/28/2026 POCAHONTAS CITY OF STP 400 SE RAILROAD STREET POCAHONTAS IA 50574- (712)335-4423 MUNICIPAL MINOR 4952 4700107 0081558 2/29/2024 POET BIOREFINING - ARTHUR, LLC 2585 QUAIL AVE ARTHUR IA 51431-- (712)367-2721 INDUSTRIAL MINOR 2869 7200108 0078051 6/30/2020 POET BIOREFINING - ASHTON, LLC 4970 260TH ST ASHTON IA 51232-- (712)724-6604 INDUSTRIAL MINOR 2869 3900104 0077003 7/31/2025 POET BIOREFINING - COON RAPIDS, LLC 1015 GRANT AVENUE COON RAPIDS IA 50058- (712)684-5301 INDUSTRIAL MINOR 2869 0200104 0080063 8/31/2022 POET BIOREFINING - CORNING 1680 BROOKS ROAD CORNING IA 50841-- INDUSTRIAL MINOR 2869 7400102 0078492 8/31/2024 POET BIOREFINING - EMMETSBURG, LLC 4724 380TH STREET EMMETSBURG IA 50536-- INDUSTRIAL MINOR 2869 3300114 0079812 10/31/2024 POET BIOREFINING - FAIRBANK, LLC 1277 - 102ND STREET FAIRBANK IA 50629-- (319)635-9400 INDUSTRIAL MINOR 2869 9400120 0079570 2/28/2022 POET BIOREFINING - GOWRIE 1562 320TH STREET GOWRIE IA 50543-- (515)352-2612 INDUSTRIAL MINOR 2869 9800112 0078042 11/30/2021 POET BIOREFINING - HANLONTOWN, LLC 3638 FIR AVE HANLONTOWN IA 50444-- (641)896-2500 INDUSTRIAL MINOR 2869 4000109 0079588 11/30/2023 POET BIOREFINING - JEWELL 2601 320TH STREET JEWELL IA 50130-- (515)827-6050 INDUSTRIAL MINOR 2869 1200108 0081272 3/31/2024 POET BIOREFINING - SHELL ROCK, LLC 30750 212TH ST SHELL ROCK IA 50670-- (319)885-2019 INDUSTRIAL MINOR 2869 1363001 0032824 6/30/2022 POMEROY CITY OF STP 2900 FEET EAST OF HWY 4 ON 170TH STREET POMEROY IA 50575- (712)468-2411 MUNICIPAL MINOR 4952 8365001 0072443 1/31/2025 PORTSMOUTH CITY OF STP 0.6 MILES S. OF THE HWY 191 & HWY 44 INTERSECTION PORTSMOUTH IA 51565- (712)592-0329 MUNICIPAL MINOR 4952 0375001 0058904 4/30/2024 POSTVILLE CITY OF STP OFF OF CO-OP DRIVE, NE CORNER OF TOWN POSTVILLE IA 52162--0242 (319)864-7456 MUNICIPAL MINOR 4952 8456323 0078981 7/31/2025 Poverty Acres Feedlot, Inc 4361 460TH STREET GRANVILLE IA 51022-- (712)727-3339 AGRICULTURAL MINOR 0211 5064001 0033073 6/30/2024 PRAIRIE CITY, CITY OF STP 9380 S. 88TH AVE. W. PRAIRIE CITY IA 50228- (515)994-2649 MUNICIPAL MINOR 4952 2200100 0003808 6/30/2024 PRAIRIE FARMS DAIRY 11744 EDGEWOOD AVE MONONA IA 52159-- (563)539-2058 INDUSTRIAL MINOR 2022 7500120 0052775 8/31/2020 PRAIRIE SUN FOODS, LLC 22058 K42 MERRILL IA 51038-- (605)582-5964 INDUSTRIAL MINOR 2076 3300901 0061875 10/31/2016 PRAIRIE VIEW CARE FACILITY 0.55 MILES S OF THE 190TH ST & M AVE INTERSECTION FAYETTE IA 52142- (319)422-6061 SEMI-PUBLIC MINOR 8059 5772001 0063347 5/31/2025 PRAIRIEBURG CITY OF STP NORTH OF PRAIRIE MAIN ROAD, WEST OF CITY PRAIRIEBURG IA 52219- (319)437-2781 MUNICIPAL MINOR 4952 0270001 0033456 3/31/2022 PRESCOTT CITY OF STP DEPOT STREET PRESCOTT IA 50859- (515)335-2553 MUNICIPAL MINOR 4952 3126502 0081817 2/28/2025 PRESCOTT ELEMENTARY SCHOOL 1151 WHITE STREET DUBUQUE IA 52001--5070 INDUSTRIAL MINOR 8211 4965001 0047864 4/30/2022 PRESTON CITY OF STP OFF OF 435TH AVE./Z34, NORTH OF TOWN PRESTON IA 52069- (319)689-3081 MUNICIPAL MINOR 4952 7155001 0033031 7/31/2022 PRIMGHAR CITY OF STP 160 S Hayes Avenue PO Box 39 PRIMGHAR IA 51245- (712)957-2435 MUNICIPAL MINOR 4952 8273001 0033227 6/30/2022 PRINCETON CITY OF STP 0.2 MILES NE OF GREAT RIVER RD & 285TH AVE INTERSECT. PRINCETON IA 52768-- (319)289-5315 MUNICIPAL MINOR 4952 0819102 0076953 8/19/2014 PROLIANT HEALTH & BIOLOGICALS 2020 LAKEWOOD DRIVE BOONE IA 50036- (515)432-8184 INDUSTRIAL MINOR 2833 9360001 0082007 10/31/2022 PROMISE CITY, CITY OF STP 0.2 MILES SOUTH OF 225TH ST & HWY 2 INTERSECTION PROMISE CITY IA 52583-- MUNICIPAL MINOR 4952 4552001 0061352 10/31/2016 PROTIVIN CITY OF STP EAST OF TOWN PROTIVIN IA 52163- (319)569-8401 MUNICIPAL MINOR 4952 8457953 0080195 1/31/2022 Pruismann Feedlot 3431 FIG AVE. ROCK VALLEY IA 51247-- (712)722-3139 AGRICULTURAL MINOR 0211 2662001 0074802 1/31/2025 PULASKI, CITY OF STP 0.44 MILES NE OF 2ND ST & MAIN ST INTERSECTION PULASKI IA 52584-- (641)647-2416 MUNICIPAL MINOR 4952 3100201 0080233 10/31/2017 Q CASINO 1855 GREYHOUND PARK ROAD DUBUQUE IA 52001-- (563)582-3647 INDUSTRIAL MINOR 7993 4700105 0076813 6/30/2022 QUAD COUNTY CORN PROCESSORS 6059 159TH STREET GALVA IA 51020- (712)282-4628 INDUSTRIAL MINOR 2869 0709108 0074071 1/31/2023 QUAD STATE GAUGING & MEASUREMENT 622 ENTERPRISE DRIVE CEDAR FALLS IA 50613- (319)277-4429 INDUSTRIAL MINOR 8734 5715115 0000761 9/30/2021 QUAKER MANUFACTURING, LLC 418 2ND STREET NE CEDAR RAPIDS IA 52401-- (319)368-1530 INDUSTRIAL MINOR 2043 4800103 0072044 6/30/2024 QUANTUM PLASTICS 2135 B AVENUE VICTOR IA 52347- (319)647-3151 INDUSTRIAL MINOR 3089 1074001 0057011 2/29/2024 QUASQUETON CITY OF STP SOUTH END OF 3RD STREET QUASQUETON IA 52326--0015 (319)934-3340 MUNICIPAL MINOR 4952 9083104 0078000 9/30/2023 QUEST LINER, INC. - LAOP 1302 NORTH WILDWOOD DRIVE OTTUMWA IA 52501- (641)682-8908 OPERATION MINOR 4789 1855001 0042994 8/31/2026 QUIMBY CITY OF STP ON SIMONSEN ROAD 2200 FEET FROM "L" AVENUE INTERSECTION QUIMBY IA 51049- (712)445-2319 MUNICIPAL MINOR 4952 4283001 0033707 4/30/2017 RADCLIFFE CITY OF STP HWY 175 AND E AVE EAST OF TOWN RADCLIFFE IA 50230-- (515)899-2118 MUNICIPAL MINOR 4952 9575001 0062804 9/30/2022 RAKE CITY OF STP NE OF 30TH AVE AND 500TH STREET INTERSECTION RAKE IA 50465-- (515)566-3735 MUNICIPAL MINOR 4952 4800705 0066265 12/31/2022 RAMADA INN 2211 U AVE WILLIAMSBURG IA 52361- (319)668-1175 SEMI-PUBLIC MINOR 7011 3361001 0076660 6/30/2024 RANDALIA CITY OF STP 14799 160TH STREET RANDALIA IA 52164- (319)428-4635 MUNICIPAL MINOR 4952 3649001 0062979 8/31/2025 RANDOLPH CITY OF STP 1/2 MI. S OF 120TH ST. AND 1/4 MI. W OF 325TH AVE. RANDOLPH IA 51649-- (712)625-2601 MUNICIPAL MINOR 4952 8464425 0083861 5/31/2023 Randy Kats Feedlot 2718 290th Street ROCK VALLEY IA 51247-- (712)476-2152 AGRICULTURAL MINOR 0211 0400918 0075418 1/31/2024 RATHBUN REGIONAL WATER ASSOCIATION 16166 HWY J29 CENTERVILLE IA 52544-- (641)647-2416 MUNICIPAL-WT MINOR 4941 0768002 0078310 6/30/2025 RAYMOND, CITY OF MS4 6415 LAFAYETTE ROAD RAYMOND IA 50667-- (319)232-1851 STORMWATER MINOR 4952 0965001 0044440 6/30/2024 READLYN, CITY OF STP 2620 240TH STREET READLYN IA 50668--0070 (319)279-3411 MUNICIPAL MINOR 4952 9778152 0080721 6/30/2021 REAGENT CHEMICAL-BIG SOO 4101 HARBOR DRIVE SIOUX CITY IA 51102-- INDUSTRIAL MINOR 4789 5071001 0047775 3/31/2026 REASNOR CITY OF STP 1/2 MILE SOUTH OF TOWN ON RANCH AVE REASNOR IA 50232- (641)793-2297 MUNICIPAL MINOR 4952 6950001 0040266 8/31/2024 RED OAK CITY OF STP 213 A ST. RED OAK IA 51566- (712)623-6508 MUNICIPAL MAJOR 4952 8464082 0083097 11/30/2025 Red Rock Cattle 3316 Elmwood Avenue ROCK VALLEY IA 51247-- (712)470-3106 AGRICULTURAL MINOR 0211 2564001 0036099 9/30/2022 REDFIELD CITY OF STP 1.7 MILES E OF DEXFIELD RD & 318TH CT INTERSECTION REDFIELD IA 50233- (515)833-2512 MUNICIPAL MINOR 4952 1400108 0052331 6/30/2026 REG RALSTON LLC 33321 215TH ST RALSTON IA 51459-- INDUSTRIAL MINOR 2869 8300105 0077429 4/30/2023 REGIONAL WATER RURAL WATER ASSOCIATION WATER PLANT 108 Highway 59 Highway AVOCA IA 51521-- (712)343-2413 OPERATION MINOR 4941 3870001 0033308 8/31/2024 REINBECK, CITY OF STP 414 MAIN ST. REINBECK IA 50669-- (319)788-2046 MUNICIPAL MINOR 4952 4700106 0077259 7/31/2022 RELIANT PROCESSING GALVA PLANT 1584 MARKET AVENUE GALVA IA 51020- (712)282-4749 INDUSTRIAL MINOR 2813 1170001 0033219 2/28/2017 REMBRANDT CITY OF STP 120TH AVE. 1/6 MILE SOUTH OF 480TH ST. REMBRANDT IA 50576- (712)286-6100 MUNICIPAL MINOR 4952 1100106 0076554 11/30/2023 REMBRANDT ENTERPRISES, INC. 1419 480th St REMBRANDT IA 50576-- INDUSTRIAL MINOR 0252 9500102 0076252 8/31/2018 REMBRANDT ENTERPRISES, INC. 13780 450TH STREET THOMPSON IA 50478- (641)584-2050 INDUSTRIAL MINOR 2015 1100116 0052991 7/31/2023 REMBRANDT ENTERPRISES, INC. - LAOP 1419 480TH ST. REMBRANDT IA 50576-- OPERATION MINOR 0252 8456481 0078387 6/30/2023 Remmerde Farms 2679 - 340TH STREET ROCK VALLEY IA 51247-- (712)476-2059 AGRICULTURAL MINOR 0211 7568001 0036030 11/30/2025 REMSEN CITY OF STP 3/4 MILE WEST OF TOWN REMSEN IA 51050- (712)786-2136 MUNICIPAL MINOR 4952 9969001 0032760 2/28/2023 RENWICK CITY OF STP 160TH STREET 1/2 MILE EAST OF HWY 17 RENWICK IA 50577-- (515)368-1874 MUNICIPAL MINOR 4952 5475100 0073474 8/31/2023 RESPONSIBLE TRANSPORTATION - LAOP 22034 200TH. STREET SIGOURNEY IA 52591- (319)804-9024 OPERATION MINOR 2047 6480001 0036960 5/31/2026 RHODES CITY OF STP 1/4 MILE SE OF OAK ST & KIMBALL ST INTERSECTION RHODES IA 50234- (641)493-2701 MUNICIPAL MINOR 4952 6670001 0032514 11/30/2023 RICEVILLE CITY OF STP 1/2 MILE SOUTH OF THE INTERSECTION OF HWY 9 & HILLCREST DR RICEVILLE IA 50466- (515)985-4118 MUNICIPAL MINOR 4952 5470001 0061328 2/28/2022 RICHLAND CITY OF STP 325TH ST & 328TH AVE INTERSECTION RICHLAND IA 52585- (319)456-6081 MUNICIPAL MINOR 4952 8456546 0080527 11/30/2022 Rick Koenen Feedlot, Inc. 3519 Elmwood Ave. ROCK VALLEY IA 51247-- (712)476-5719 AGRICULTURAL MINOR 0211 3175001 0066311 8/31/2021 RICKARDSVILLE CITY OF STP 1/2 MILE N OF HWY 52 ON KLEIN LANE RICKARDSVILLE IA 52039- (319)552-1302 MUNICIPAL MINOR 4952 2441001 0042927 7/31/2023 RICKETTS CITY OF STP 0.2 MILES SW OF COUNTY ROAD E26 & MAPLE STREET INTERSECTION RICKETTS IA 51460-- (712)676-3940 MUNICIPAL MINOR 4952 9680001 0058726 1/31/2023 RIDGEWAY CITY OF STP 0.2 MILES E OF CO RD W14 & 250TH ST INTERSECTION RIDGEWAY IA 52165-- (319)737-2457 MUNICIPAL MINOR 4952 1374001 0033715 11/30/2022 RINARD CITY OF STP QUARTER MILE SOUTH OF CITY RINARD IA 50538- (712)467-5654 MUNICIPAL MINOR 4952 3275001 0057436 4/30/2023 RINGSTED CITY OF STP 112 WEST MAPLE RINGSTED IA 50578--0278 (712)866-0877 MUNICIPAL MINOR 4952 3754001 0041882 12/31/2022 RIPPEY CITY OF STP 1/4 MILE SOUTH OF 290TH STREET EAST OF TOWN RIPPEY IA 50235-- (515)436-7713 MUNICIPAL MINOR 4952 7800301 0071269 11/30/2024 RISEN SON CHRISTIAN VILLAGE 3000 RISEN SON BLVD COUNCIL BLUFFS IA 51503-- (712)366-9655 SEMI-PUBLIC MINOR 6732 7159443 0081230 6/30/2023 Ritter Cattle Company 5145 280th Street SHELDON IA 51201-- (712)470-0536 AGRICULTURAL MINOR 0211 8278002 0078832 8/31/2024 RIVERDALE, CITY OF MS4 110 MANOR DR. RIVERDALE IA 52722-- (563)355-2511 STORMWATER MINOR 4952 9260001 0047945 6/30/2026 RIVERSIDE CITY OF STP 1195 VINE AVE RIVERSIDE IA 52327- (319)648-3501 MUNICIPAL MINOR 4952 3655000 0079995 12/31/2022 RIVERTON WATER TREATMENT PLANT 4550 FEET EAST OF 330TH AVENUE ON 250TH STREET RIVERTON IA 51650-- (712)387-2085 OPERATION MINOR 4941 3655001 0077097 12/31/2019 RIVERTON, CITY OF-STP 2000 FEET SOUTH OF TOWN, EAST OF 322 AVENUE RIVERTON IA 51650--0147 (712)387-2085 MUNICIPAL MINOR 4952 8271801 0076805 11/30/2022 RIVERVIEW MANOR (PRIVATE CARE FACILITY) 17990 SPENCER RD PLEASANT VALLEY IA 52767-- (319)332-4600 SEMI-PUBLIC MINOR 8051 7048301 0077453 12/31/2025 RIVERVIEW SUBDIVISION 3647 RIVERVIEW CIR MUSCATINE IA 52761-- (563)264-0800 SEMI-PUBLIC MINOR 8641 5776000 0078816 7/31/2025 ROBINS, CITY OF MS4 265 S 2ND ST ROBINS IA 52328-- (319)393-0588 STORMWATER MINOR 4952 1769001 0063495 8/31/2023 ROCK FALLS CITY OF STP 2498 305TH ST. ROCK FALLS IA 50467-- (641)749-2612 MUNICIPAL MINOR 4952 6065001 0032786 6/30/2026 ROCK RAPIDS CITY OF STP 1205 S. EAST STREET ROCK RAPIDS IA 51246- (712)472-3665 MUNICIPAL MINOR 4952 6056382 0079022 10/31/2024 Rock River Feedyards, Inc. 1611 Fir Ave. ROCK RAPIDS IA 51246-- (712)472-3128 AGRICULTURAL MINOR 0211 6066387 0083267 10/31/2021 Rock River Jerseys Combined Dairy 2272 240th Street DOON IA 51235-- (712)986-5811 AGRICULTURAL MINOR 0241 8482001 0033057 10/31/2021 ROCK VALLEY CITY OF STP 1223 10TH AVE. ROCK VALLEY IA 51247- (712)476-5707 MUNICIPAL MINOR 4952 3430001 0058432 7/31/2022 ROCKFORD CITY OF STP 2175 9TH STREET ROAD ROCKFORD IA 50468- (641)756-3644 MUNICIPAL MINOR 4952

14 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Facility Address Facility City Facility Facility Zip Facility Phone Permit Type Class. SIC State Code 1376001 0033138 1/31/2023 ROCKWELL CITY, CITY OF STP 2637 PRESTON AVE., NE OF TOWN ROCKWELL CITY IA 50579- (712)297-7041 MUNICIPAL MAJOR 4952 1773001 0033481 7/31/2022 ROCKWELL, CITY OF STP 0.6 MILES SW OF US HWY 65 & 150TH ST INTERSECTION ROCKWELL IA 50469- (641)822-4906 MUNICIPAL MINOR 4952 8570001 0032425 12/31/2025 ROLAND CITY OF STP 599 S. COTTONWOOD ROLAND IA 50236- (515)388-4595 MUNICIPAL MINOR 4952 7639001 0032310 2/28/2025 ROLFE CITY OF STP RAILROAD ST & 300TH AVE ROLFE IA 50581- (712)848-3456 MUNICIPAL MINOR 4952 8456731 0079341 6/30/2021 Rolling Hills Feedlot 4514 Cleveland Ave. HAWARDEN IA 51023-- (712)552-1591 AGRICULTURAL MINOR 0211 8500606 0067857 1/31/2025 ROLLING HILLS MOBILE HOME PARK 31100 653RD AVE MAXWELL IA 50161- (515)387-8954 SEMI-PUBLIC MINOR 6515 4475001 0072427 1/31/2016 ROME CITY OF STP Clayton Ave N. of RR tracks. 1st chained entry west. ROME IA 52642-- (319)986-6486 MUNICIPAL MINOR 4952 3100200 0052748 4/30/2022 RON WHITE HWY 20 TRUCK PLAZA 15140 DEPOT RIDGE PEOSTA IA 52068-- (563)588-1574 SEMI-PUBLIC MINOR 5541 5640109 0084336 8/31/2023 ROQUETTE AMERICA INC. - LAOP 1003 COMMERCIAL ST. KEOKUK IA 52632-- (319)524-5757 OPERATION MINOR 2046 5640101 0000256 6/30/2023 ROQUETTE AMERICA, INC. 1417 EXCHANGE STREET KEOKUK IA 52632-- (319)524-5757 INDUSTRIAL MAJOR 2046 0100104 0052306 10/28/2024 Rose Acre Farms - Livestock Truck Wash - LAOP 2708 350th Road STUART IA 50250-- OPERATION MINOR 7542 6279001 0072311 12/31/2021 ROSE HILL CITY OF STP VENTURA AVE AND 235TH ST INTERSECT ROSE HILL IA 52586-- (641)660-0332 MUNICIPAL MINOR 4952 3126105 0002984 8/31/2021 ROUSSELOT, INC. 2350 KERPER BOULEVARD DUBUQUE IA 52001- (563)690-1143 INDUSTRIAL MINOR 2899 9958000 0053307 6/30/2026 ROWAN MUNICIPAL WATER SUPPLY 118 MAIN STREET ROWAN IA 50470-- (641)853-2345 MUNICIPAL-WT MINOR 4941 1080001 0043672 7/31/2022 ROWLEY CITY OF STP 1/2 MILE SOUTH OF D-47 ON MICHEL AVE ROWLEY IA 52329- (319)938-2636 MUNICIPAL MINOR 4952 2166001 0035408 11/30/2016 ROYAL CITY OF STP 0.4 MILE NORTH OF 400TH ST. & HIGHWAY 240 ROYAL IA 51357- (712)933-2333 MUNICIPAL MINOR 4952 2300603 0071391 9/30/2025 ROYAL PINES MHP, LLC 5000 LINCOLN WAY CLINTON IA 52732- (563)243-3165 SEMI-PUBLIC MINOR 6515 8460416 0084069 7/31/2023 Royal Ridge Dairy (formerly Double V Dairy, LLC) 3154 Fig Ave. ROCK VALLEY IA 51247-- (712)476-2876 AGRICULTURAL MINOR 0241 1856879 0079065 12/31/2019 RTCP Farm Partnership (Spring Valley Ranch) 4322 U AVENUE SUTHERLAND IA 51058-- (712)225-2718 AGRICULTURAL MINOR 0211 3440001 0061344 5/31/2016 RUDD CITY OF STP 402 CHICKASAW STREET RUDD IA 50471-- (515)395-2368 MUNICIPAL MINOR 4952 7774001 0063355 4/30/2022 RUNNELLS CITY OF STP OFF OF W PARK AVE., WEST OF TOWN RUNNELLS IA 50237--0033 MUNICIPAL MINOR 4952 8400701 0083283 7/31/2025 RURAL WATER SYSTEM #1 - PLANT #2 1129 9TH ST SW SIOUX CENTER IA 51250-- (712)752-8318 MUNICIPAL-WT MINOR 4941 8400702 0083291 2/28/2025 RURAL WATER SYSTEM #1 - PLANT #3 3129 420TH STREET SIOUX CENTER IA 51250-- MUNICIPAL-WT MINOR 4941 1456442 0052403 12/31/2021 Russ Pudenz Farms, Inc. 18889 130TH ST CARROLL IA 51401--8759 (712)830-8473 AGRICULTURAL MINOR 0211 5939001 0043176 12/31/2024 RUSSELL CITY OF STP 1/4 MI SOUTH OF 457 STREET AND 294TH AVENUE RUSSELL IA 50238- (641)535-2494 MUNICIPAL MINOR 4952 7556723 0079600 7/31/2026 Russell Schmidt Feedlot 25737 HWY C12 IRETON IA 51027-- (712)562-6102 AGRICULTURAL MINOR 0211 7465001 0032441 2/28/2026 RUTHVEN CITY OF STP 1305 GOWRIE ST. RUTHVEN IA 51358- (712)837-5206 MUNICIPAL MINOR 4952 4675001 0061239 2/28/2022 RUTLAND CITY OF STP 330 FEET SOUTH OF 4TH AVENUE S. & 1ST STREET S. INTERSECTION RUTLAND IA 50582- (515)332-2525 MUNICIPAL MINOR 4952 2864001 0041785 3/31/2025 RYAN CITY OF STP SOUTH OF 300TH ST & ILLINOIS CENTRAL GULF RAILROAD RYAN IA 52330--0040 (563)932-2051 MUNICIPAL MINOR 4952 7856416 0079171 7/31/2026 S & B Feedyard 35714 ASPEN ROAD MACEDONIA IA 51549-- (712)486-2494 AGRICULTURAL MINOR 0211 1160248 0077755 4/30/2026 S & S Farms, Inc. 1378 650TH STREET STORM LAKE IA 50588-- (712)299-5731 AGRICULTURAL MINOR 0211 5456216 0077887 3/31/2023 S + S Farm 12713 120th Ave GIBSON IA 50104-- (641)634-2847 AGRICULTURAL MINOR 0211 4975001 0032867 3/31/2024 SABULA CITY OF STP NORTHEAST OF SOUTH SABULA LAKE PARK SABULA IA 52070--0331 (563)687-2711 MUNICIPAL MINOR 4952 8150001 0033090 5/31/2026 SAC CITY, CITY OF STP 811 Highland Avenue South SAC CITY IA 50583- (712)662-4915 MUNICIPAL MINOR 4952 3181501 0077984 9/30/2021 SAGEVILLE SCHOOL STP 11919 SHERRILL ROAD DUBUQUE IA 52002--9725 (563)552-3175 SEMI-PUBLIC MINOR 8211 9176001 0072451 9/30/2024 SAINT MARYS CITY OF STP Off 33rd Ave & 1/2 Mile North of Nevada Ave Intersection SAINT MARYS IA 50241- (641)297-2104 MUNICIPAL MINOR 4952 2277002 0071072 7/31/2022 SAINT OLAF CITY OF STP EAST OF 205TH ST AND SOUTH OFF FAWN HALLOW ROAD SAINT OLAF IA 52072- (319)783-7777 MUNICIPAL MINOR 4952 4478001 0047996 1/31/2023 SALEM CITY OF STP ENTRANCE 1825 FT WEST of SALEM RD & GRAHM AVE INTERSECTION SALEM IA 52649-- (319)258-4531 MUNICIPAL MINOR 4952 9770001 0032913 8/31/2023 SALIX CITY OF STP 0.2 MILES N OF CARROLL AVE & POPLAR ST INTERSECTION SALIX IA 51052- (712)946-5645 MUNICIPAL MINOR 4952 6800602 0064041 6/30/2023 SAMPLES COVENANT PARK 6974 HWY 34 ALBIA IA 52531- (641)932-7396 SEMI-PUBLIC MINOR 6515 7165001 0032522 6/30/2025 SANBORN CITY OF STP 201 S WESTERN STREET SANBORN IA 51248- (712)930-5117 MUNICIPAL MINOR 4952 5600608 0065391 3/31/2019 SANDUSKY MOBILE HOME VILLAGE 2723 340TH ST KEOKUK IA 52632- (319)524-5355 SEMI-PUBLIC MINOR 6515 3600201 0077461 12/31/2025 SAPP BROS.TRAVEL CENTER 2496 210TH AVENUE PERCIVAL IA 51648--6048 (712)382-2323 OPERATION MINOR 5541 9400900 0059200 2/28/2026 SAVAGE SANITARY DISTRICT STP 1200 FEET WEST OF 225TH ST & OLD HWY 169 INTERSECTION FORT DODGE IA 50501- (515)955-3428 MUNICIPAL MINOR 4952 7727011 0079847 5/31/2025 SAYLORVILLE WATER TREATMENT PLANT NW 26TH ST DES MOINES IA 50313-- MUNICIPAL-WT MINOR 4941 5200405 0052791 9/30/2026 SCALES POINTE CAMPGROUND & MARINA 1850 SCALES BEND ROAD NORTH LIBERTY IA 52317- (319)626-2171 SEMI-PUBLIC MINOR 7032 2200901 0065749 8/31/2016 SCENIC ACRES CARE FACILITY 600 FT N. OF THE GRANITE ST & 230TH ST INTERSECTIO SAINT OLAF IA 52072-- (319)245-2640 SEMI-PUBLIC MINOR 8051 8156001 0042935 11/30/2021 SCHALLER CITY OF STP NW OF TOWN OFF OF EAST COUNTY ROAD SCHALLER IA 51053- (712)275-4742 MUNICIPAL MINOR 4952 8356843 0079511 5/31/2026 Schechinger Farms, Inc. 1335 IRONWOOD ROAD HARLAN IA 51537-- (712)627-4656 AGRICULTURAL MINOR 0211 2446001 0036170 1/31/2022 SCHLESWIG CITY OF STP OFF 6TH STREET, SOUTH OF TOWN SCHLESWIG IA 51461-- (712)676-3361 MUNICIPAL MINOR 4952 7556231 0080471 10/31/2022 Schnepf Farms 39367 150th Street LE MARS IA 51031-- (712)786-2904 AGRICULTURAL MINOR 0211 3759001 0032409 9/30/2025 SCRANTON CITY OF STP APPROX. 0.2 MILES SE OF KENDRICK ST. & STANTON ST. INTERSECTION SCRANTON IA 51462-- (712)652-3888 MUNICIPAL MINOR 4952 7955001 0062553 7/31/2025 SEARSBORO CITY OF STP 0.3 MILES S OF THE 40TH ST & IOWA 146 INTERSECTION SEARSBORO IA 50242-- (641)593-6511 MUNICIPAL MINOR 4952 9774001 0078859 11/30/2021 SERGEANT BLUFF, CITY OF MS4 401 4TH ST SERGEANT BLUFF IA 51054-- (712)943-4344 STORMWATER MINOR 4952 9774000 0052005 10/31/2023 SERGEANT BLUFF, CITY OF WTP 0.1 MILE SE OF WARRIOR RD AND S LEWIS BLVD INTERSECT SERGEANT BLUFF IA 51054-- (712)943-9615 MUNICIPAL-WT MINOR 4941 2326105 0000183 4/30/2023 SETHNESS PRODUCTS COMPANY 1347 BEAVER CHANNEL PARKWAY CLINTON IA 52732-- (563)243-3943 INDUSTRIAL MINOR 2062 9368001 0055301 3/31/2016 SEYMOUR CITY OF STP 0.25 MILES EAST OF CITY LIMITS ON J46 SEYMOUR IA 52590- (641)898-7146 MUNICIPAL MINOR 4952 8165218 0083836 10/31/2022 SFI, Inc. 2681 190th Street NEMAHA IA 50567-- (712)660-0046 AGRICULTURAL MINOR 0211 7380001 0069477 6/30/2020 SHAMBAUGH CITY OF STP 1/2 MILE S OF THE 270TH ST & ROSE AVE INTERSECTION SHAMBAUGH IA 51651-- (712)251-6872 MUNICIPAL MINOR 4952 8770001 0076571 5/31/2016 SHARPSBURG,CITY-STP-(SIRWA) ORANGE AVE. 1/2 MILE WEST OF TOWN SHARPSBURG IA 50862-- (641)782-5744 MUNICIPAL MINOR 4952 3570001 0036005 1/31/2025 SHEFFIELD CITY OF STP EAST STREET, SOUTHEAST OF TOWN SHEFFIELD IA 50475- (515)892-4718 MUNICIPAL MINOR 4952 8369001 0036579 8/31/2020 SHELBY CITY OF STP 1/2 MILE EAST OF INTERSECTION OF M16 & 300TH ST. SHELBY IA 51570-- (712)544-2404 MUNICIPAL MINOR 4952 7170001 0032662 3/31/2026 SHELDON CITY OF STP 910 WESTERN AVE SHELDON IA 51201-- (712)324-2234 MUNICIPAL MAJOR 4952 1286001 0033359 2/28/2022 SHELL ROCK CITY OF STP 24130 WOODS AVE SHELL ROCK IA 50670- (319)885-6555 MUNICIPAL MINOR 4952 0670001 0033332 5/31/2006 SHELLSBURG CITY OF STP OFF OF HOMER ST., SE CORNER OF TOWN SHELLSBURG IA 52332- (319)436-2954 MUNICIPAL MINOR 4952 3659001 0032328 2/28/2021 SHENANDOAH CITY OF STP WEST OF TOWN OFF 190TH STREET AND WEST SHERIDAN AVENUE SHENANDOAH IA 51601--0338 (712)246-3839 MUNICIPAL MAJOR 4952 7383000 0079081 10/31/2018 SHENANDOAH, CITY OF WTP 801 W FERGUSON SHENANDOAH IA 51601-- (712)246-4411 MUNICIPAL-WT MINOR 4941 3183001 0056952 12/31/2014 SHERRILL CITY OF STP (EAST) 1/2 MILE EAST OF TOWN SHERRILL IA 52073--9998 (319)552-2298 MUNICIPAL MINOR 4952 7245001 0032841 7/31/2025 SIBLEY CITY OF STP 5245 190TH STREET SIBLEY IA 51249- (712)754-3575 MUNICIPAL MINOR 4952 3661001 0035971 5/31/2020 SIDNEY CITY OF STP 0.4 MILES SOUTH OF CLAY ST & BIRCH ST INTERSECTION SIDNEY IA 51652-- (712)374-2223 MUNICIPAL MINOR 4952 5600104 0074951 3/31/2019 SIEMENS GAMESA RENEWABLE ENERGY, INC. 2597 HWY 61 S FORT MADISON IA 52639-- (319)463-2000 OPERATION MINOR 3511 5475002 0036595 6/30/2020 SIGOURNEY CITY OF STP (EAST) 1/2 MILE EAST OF THE MAY ST. & E. WASHINGTON ST. INTERSECT SIGOURNEY IA 52591- (641)622-3080 MUNICIPAL MINOR 4952 5625111 0081264 9/30/2024 SILGAN CONTAINERS MANUFACTURING CORPORATION 2326 263RD AVE FORT MADISON IA 52627-- (319)372-8491 OPERATION MINOR 3411 6575001 0079774 2/28/2022 SILVER CITY, CITY OF STP 1/2 MILE NORTH & EAST OF DOWNEY AVE. AND MAIN ST. SILVER CITY IA 51571-- (712)525-9121 MUNICIPAL MINOR 4952 7861149 0078409 3/31/2025 SILVER CREEK FEEDERS 32665 BEECHNUT ROAD TREYNOR IA 51575--7353 (712)487-3882 AGRICULTURAL MINOR 0211 1800100 0004634 9/30/2026 SIMONSEN RENDERING, LLC - LAOP 6141 SIMONSEN ROAD QUIMBY IA 51049- (712)445-5542 OPERATION MINOR 2077 1281101 0053018 2/28/2025 SINCLAIR ELEVATOR INC. 32746 SINCLAIR AVE PARKERSBURG IA 50665-- (319)346-1954 INDUSTRIAL MINOR 2048 8486002 0033731 2/28/2026 SIOUX CENTER CITY OF STP 1960 13th AVE SE SIOUX CENTER IA 51250--1895 (712)722-0761 MUNICIPAL MAJOR 4952 8486000 0079383 4/30/2023 Sioux Center WTP 803 9th ST SE SIOUX CENTER IA 51250-- (712)722-0761 MUNICIPAL-WT MINOR 4941 9778202 0069493 1/31/2023 SIOUX CITY COMMUNITY SCHOOL DISTRICT 627 4TH ST SIOUX CITY IA 51101-- INDUSTRIAL MINOR 8211 9778002 0078662 11/30/2022 SIOUX CITY, CITY OF MS4 405 6TH ST SIOUX CITY IA 51102-- (712)279-6222 STORMWATER MINOR 4952 9778001 0043095 11/30/2025 SIOUX CITY, CITY OF STP 3100 SOUTH LEWIS BLVD, RR 6 SIOUX CITY IA 51106- (712)279-6916 MUNICIPAL MAJOR 4952 1175001 0042951 3/31/2024 SIOUX RAPIDS CITY OF STP 0.5 MILES SW OF NORTH RIVER RD & US 71 INTERSECT. SIOUX RAPIDS IA 50585-- (712)283-2770 MUNICIPAL MINOR 4952 8400114 0076791 6/30/2025 SIOUXLAND ENERGY COOPERATIVE 3890 GARFIELD AVENUE SIOUX CENTER IA 51250- (712)722-4904 INDUSTRIAL MINOR 2869 8580001 0033740 5/31/2020 SLATER CITY OF STP 1200 FEET SOUTH OF 10TH AVE & LINN ST INTERSECTION SLATER IA 50244--0538 (515)685-3031 MUNICIPAL MINOR 4952 9780001 0032361 2/29/2024 SLOAN CITY OF STP APPROX. 0.2 MILES SOUTH OF INTERSECT OF OLD HWY 75 & HWY 141 SLOAN IA 51055- (712)428-3348 MUNICIPAL MINOR 4952 9783001 0056341 4/30/2026 SMITHLAND CITY OF STP 301 EAST MAIN SMITHLAND IA 51056- (712)889-2220 MUNICIPAL MINOR 4952 6749001 0061743 10/31/2023 SOLDIER CITY OF STP OFF OF HWY 37, 1/4 MI EAST OF INTERSECT. OF HWY 37 & HWY 183 SOLDIER IA 51572- (712)884-2266 MUNICIPAL MINOR 4952 5282001 0036978 4/30/2022 SOLON CITY OF STP OFF OF WEST ELM ST., NW SIDE OF TOWN SOLON IA 52333- (319)644-3755 MUNICIPAL MINOR 4952

15 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Facility Address Facility City Facility Facility Zip Facility Phone Permit Type Class. SIC State Code 5478001 0084018 9/30/2022 SOUTH ENGLISH, CITY OF STP 502 MILLER STREET SOUTH ENGLISH IA 52335-- (319)330-9696 MUNICIPAL MINOR 4952 5502600 0065269 9/23/2006 SOUTH OAK ESTATES MHP (NOW BURR OAK MOTEL) 1109 109TH ST ALGONA IA 50511- (641)220-3300 SEMI-PUBLIC MINOR 6515 8500302 0068276 10/31/2022 SOUTH SQUAW VALLEY ASSOCIATION NW OF INTERSECTION AT CAMERON SCHOOL ROAD 7 VALLEY ROAD AMES IA 50014- (515)232-7380 SEMI-PUBLIC MINOR 8641 1100701 0083305 2/28/2017 SOUTH WEST SHORELINE SANITARY DISTRICT 630th Street STORM LAKE IA 50588-- (712)732-2029 MUNICIPAL MINOR 4952 5500301 0068284 6/30/2026 SOUTHDALE ADDITION 206 EVERGREEN RD ALGONA IA 50511- (515)320-1122 SEMI-PUBLIC MINOR 8641 4200601 0067679 8/12/2007 SOUTHPARK ESTATES 1/2 MILE SOUTH OF IOWA FALLS, EAST OF HWY 65 IOWA FALLS IA 50126- (641)648-5597 SEMI-PUBLIC MINOR 6515 7800106 0081043 12/31/2024 SOUTHWEST IOWA RENEWABLE ENERGY 10868 189TH ST COUNCIL BLUFFS IA 51503--6925 (712)366-0392 INDUSTRIAL MINOR 2869 7700802 0052799 8/31/2023 SOUTHWEST POLK WATER SERVICE 8491 SW 52nd St WEST DES MOINES IA 50265-- MUNICIPAL-WT MINOR 4941 8000702 0083968 9/30/2023 SOUTHWEST RINGGOLD COUNTY WWTF - SIRWA 0.1 MILES SE OF THE 155TH AVE & 255TH ST INTERSECT REDDING IA 50860-- (641)782-5744 MUNICIPAL MINOR 4952 2171004 0021059 2/29/2024 SPENCER, CITY OF STP 400 10th Ave SE SPENCER IA 51301-- (712)262-5584 MUNICIPAL MAJOR 4952 9686001 0042749 6/30/2026 SPILLVILLE CITY OF STP ABOUT 1800 FEET EAST OF MAIN ST ON HWY 325 SPILLVILLE IA 52168-- (319)562-3425 MUNICIPAL MINOR 4952 4982001 0050741 6/30/2023 SPRAGUEVILLE CITY OF STP APPROX 0.2 MILES SE OF DIVISION ST AND MAIN ST INTERSECT SPRAGUEVILLE IA 52074- (563)689-6511 MUNICIPAL MINOR 4952 3100606 0066087 1/31/2023 SPRING VALLEY MOBILE PARK 6838 HWY 52 S BELLEVUE IA 52031- (563)599-0003 SEMI-PUBLIC MINOR 6515 4984001 0033154 8/31/2022 SPRINGBROOK CITY OF STP 0.17 MILES E OF EAST MAIN ST & 3RD ST INTERSECTION SPRINGBROOK IA 52074- (319)872-4601 MUNICIPAL MINOR 4952 5782002 0064726 4/30/2026 SPRINGVILLE CITY OF STP 1 MI SW OF HWY 151 & SPRINGVILLE RD INTERSECTION SPRINGVILLE IA 52336-- (319)854-6428 MUNICIPAL MINOR 4952 7000108 0074101 8/31/2024 SSAB IOWA INC. 1770 BILL SHARP BLVD MUSCATINE IA 52761-- (319)381-5300 INDUSTRIAL MINOR 3312 6161001 0039896 11/30/2020 ST CHARLES CITY OF STP 2700 FT. SOUTH OF WINDWOOD AVE. & W. MAIN ST. INTERSECT. SAINT CHARLES IA 50240- (515)250-9465 MUNICIPAL MINOR 4952 4979001 0040304 11/30/2022 ST DONATUS CITY OF STP APPROX 1/4 MILE SE OF HWY 52 & E 1ST ST INTERSECT SAINT DONATUS IA 52071- (563)590-9215 MUNICIPAL MINOR 4952 5675001 0076716 6/30/2016 ST PAUL CITY OF STP 0.4 MILES NE OF ST PAUL RD & MAIN ST INTERSECT SAINT PAUL IA 52657-- (319)469-2019 MUNICIPAL MINOR 4952 6673001 0033723 4/30/2024 ST. ANSGAR CITY OF STP 1450 420TH STREET SAINT ANSGAR IA 50472- (641)713-4921 MUNICIPAL MINOR 4952 6482001 0077291 9/30/2018 ST. ANTHONY CITY OF (IRUA) 1/2 MILE EAST OF THE INTERSECTION OF S57 & E23 SAINT ANTHONY IA 50239-- (641)792-7011 MUNICIPAL MINOR 4952 3368001 0074705 5/31/2023 ST. LUCAS CITY OF STP QUAIL RD 0.4 MILES SOUTH OF 310TH ST SAINT LUCAS IA 52166- (563)778-2737 MUNICIPAL MINOR 4952 6677001 0035254 10/31/2021 STACYVILLE, CITY OF STP 1 MILE SOUTH OF TOWN ON WEST SIDE OF ANGLE ROAD STACYVILLE IA 50476- (641)737-2428 MUNICIPAL MINOR 4952 8456480 0080110 11/30/2021 Stan Eisma Feedlot 4863 GOLDFINCH AVENUE MAURICE IA 51036-- (712)567-3461 AGRICULTURAL MINOR 0211 4045001 0032743 1/31/2025 STANHOPE CITY OF STP 0.3 MILES SE OF 342ND ST & INKPADUTA AVE INTERSECT STANHOPE IA 50246-- (515)826-3290 MUNICIPAL MINOR 4952 1089001 0054178 11/30/2025 STANLEY CITY OF STP 500 FEET SOUTH OF L AVE. AND 100TH ST. INTERSECT STANLEY IA 50671- (319)634-3708 MUNICIPAL MINOR 4952 6965001 0042978 9/24/2014 STANTON CITY OF STP 0.1 MILES W OF 225TH ST & HARVARD AVE INTERSECT. STANTON IA 51573-- (712)829-2613 MUNICIPAL MINOR 4952 1681001 0033758 9/30/2026 STANWOOD CITY OF STP WEST EDGE OF TOWN NEAR WEST ST AND SOUTH AVE STANWOOD IA 52337- (563)889-0011 MUNICIPAL MINOR 4952 3300501 0053234 1/31/2026 STARMONT COMMUNITY SCHOOL DISTRICT 3202 40th STREET ARLINGTON IA 50606-- (563)933-4598 SEMI-PUBLIC MINOR 8211 6484001 0041807 2/29/2024 STATE CENTER CITY OF STP OFF OF EASTMAN AVE., SOUTH OF TOWN STATE CENTER IA 50247- (641)483-2559 MUNICIPAL MINOR 4952 3200105 0052462 10/31/2020 STATELINE COOPERATIVE 5265 206TH STREET ARMSTRONG IA 50514-- INDUSTRIAL MINOR 2048 4289001 0033324 12/31/2024 STEAMBOAT ROCK CITY OF STP 1102 RIVER ROAD SOUTH STEAMBOAT ROCK IA 50672-- (515)868-2240 MUNICIPAL MINOR 4952 4764288 0080462 11/30/2022 Steve Meyer Feedlot (Formerly Meyer Brothers Feedlot) 1491 Dodge Ave HOLSTEIN IA 51025-- (712)368-2166 AGRICULTURAL MINOR 0211 8973001 0061603 5/31/2016 STOCKPORT CITY OF STP 0.35 MILES SE OF RTE W30 & 120TH ST INTERSECTION STOCKPORT IA 52651-- (319)796-2135 MUNICIPAL MINOR 4952 7063001 0033464 1/31/2016 STOCKTON CITY OF STP 1/4 MILE SOUTH OF TOWN ON NEBRASKA STREET STOCKTON IA 52769- (563)785-4708 MUNICIPAL MINOR 4952 1178001 0032484 6/30/2024 STORM LAKE CITY OF STP 1234 630th ST STORM LAKE IA 50588- (712)732-8032 MUNICIPAL MAJOR 4952 1178003 0078638 11/30/2025 STORM LAKE, CITY OF MS4 620 ERIE ST STORM LAKE IA 50588-- (712)732-8002 STORMWATER MINOR 4952 8584001 0035882 7/31/2024 STORY CITY CITY OF STP 1300 FIRST STREET STORY CITY IA 50248- (515)733-4162 MUNICIPAL MINOR 4952 3880001 0084107 6/30/2017 STOUT CITY OF STP 0.2 MILES SW OF 120TH ST & R AVE INTERSECTION STOUT IA 50673-- (641)792-7011 MUNICIPAL MINOR 4952 1856642 0080021 2/28/2022 Stowater Feedlot, Inc. 5326 D AVE MARCUS IA 51035-- (712)229-3169 AGRICULTURAL MINOR 0211 9480001 0035980 9/6/2012 STRATFORD CITY OF STP 1/2 MILE NORTH OF BELLVILLE RD. & DRYDEN ST. INTERSECT STRATFORD IA 50249--0218 (515)838-2508 MUNICIPAL MINOR 4952 2279001 0042757 11/30/2024 STRAWBERRY POINT CITY OF STP 13630 STATE HWY 3 STRAWBERRY POINT IA 52076- (563)933-4482 MUNICIPAL MINOR 4952 2839100 0063533 1/31/2025 STRYTEN MANCHESTER, LLC 913 S 10TH ST MANCHESTER IA 52057-- (563)927-4501 INDUSTRIAL SIGNIFICANT MINOR 3691 3973001 0041858 1/31/2025 STUART CITY OF STP 3225 340TH STREET STUART IA 50250- (515)523-2078 MUNICIPAL MINOR 4952 0100103 0052242 9/30/2025 STUART EGG FARM - LAOP 2650 350TH RD STUART IA 50250-- OPERATION MINOR 0252 5200907 0083674 7/31/2024 SUGAR BOTTOM RECREATION AREA 2192 MEHAFFEY BRIDGE ROAD NE SOLON IA 52333-- (319)338-3543 SEMI-PUBLIC MINOR 7033 5076001 0041963 2/28/2026 SULLY CITY OF STP 12957 TEMPLE AVE SULLY IA 50251-- (641)594-3734 MUNICIPAL MINOR 4952 0970001 0033766 8/31/2022 SUMNER CITY OF STP 1001 SOUTH DIVISION STREET SUMNER IA 50674- (563)578-3242 MUNICIPAL MINOR 4952 8000701 0069469 6/30/2020 SUN VALLEY SANITARY DISTRICT LAGOON SOUTH OF J-20 AND 140TH STREET ELLSTON IA 50074- (641)772-4914 MUNICIPAL MINOR 4952 3100400 0068748 8/31/2019 SUNDOWN MOUNTAIN RESORT 16991 ASBURY ROAD DUBUQUE IA 52002- (563)556-6676 SEMI-PUBLIC MINOR 7999 7714601 0068071 3/31/2022 SUNNYBROOK MHC LLC (HAVENPARK MANAGEMENT) 5975 NE BERWICK DR BERWICK IA 50032-- (515)265-5429 SEMI-PUBLIC MINOR 6515 7200802 0079596 2/28/2025 SUNRISE FARMS, INC. - LAOP 2060 WHITE AVE HARRIS IA 51345-- (712)735-6010 OPERATION MINOR 0259 8456715 0079103 6/30/2025 Sunrise Feedlot, Inc. 2919 GRANT AVENUE HULL IA 51239-- (712)439-1356 AGRICULTURAL MINOR 0211 5200602 0067911 12/31/2025 SUNRISE MOBILE HOME 2100 S. SCOTT BLVD IOWA CITY IA 52240- (319)354-2954 SEMI-PUBLIC MINOR 6515 3100612 0073334 9/30/2021 SUPER 20 MOBILE HOME PARK 14674 N CASCADE ROAD DUBUQUE IA 52002-- (563)590-1708 SEMI-PUBLIC MINOR 6515 7177001 0036129 2/28/2022 SUTHERLAND CITY OF STP 1/8 MILE SE OF VINE AVE & E 4TH ST SUTHERLAND IA 51058- (712)446-2243 MUNICIPAL MINOR 4952 1778001 0073903 2/28/2023 SWALEDALE, CITY STP 0.12 MILES SOUTH OF KILLDEER AVE. & 150TH ST. SWALEDALE IA 50477--0007 (641)995-2360 MUNICIPAL MINOR 4952 5584001 0047813 5/31/2023 SWEA CITY CITY OF STP CORNER OF 420TH ST. AND COUNTY RD. P30, SE OF TOWN SWEA CITY IA 50590- (515)272-4330 MUNICIPAL MINOR 4952 5285001 0033774 3/31/2026 SWISHER CITY OF STP 811 OAK AVE SE SWISHER IA 52338- (319)857-4539 MUNICIPAL MINOR 4952 3100600 0064009 9/30/2021 TABLE MOUND MHP 9442 NOONAN STREET DUBUQUE IA 52001-- (563)583-8971 SEMI-PUBLIC MINOR 6515 3667001 0038440 4/30/2020 TABOR CITY OF STP 280TH AVE & 105TH STREET TABOR IA 51653-- (712)629-2295 MUNICIPAL MINOR 4952 8670002 0043681 11/30/2023 TAMA CITY OF STP 800 SOUTH STATE STREET TAMA IA 52339- (641)484-2627 MUNICIPAL MAJOR 4952 8670100 0000841 4/30/2021 TAMA PAPERBOARD, LLC dba GREIF 117 SIEGEL STREET TAMA IA 52339- (641)484-2884 INDUSTRIAL MAJOR 2631 8670000 0052527 2/28/2021 TAMA WATER TREATMENT PLANT (POWESHIEK WATER ASSOC) 3504 HIGHWAY 63 TAMA IA 52339-- MUNICIPAL-WT MINOR 4941 6200110 0079553 2/19/2025 TASSEL RIDGE WINERY - LAOP 1681 220TH STREET LEIGHTON IA 50143-- (641)672-9463 OPERATION MINOR 2084 5000801 0073181 5/31/2023 TEEN CHALLENGE OF THE MIDLANDS-STP 900 N. LEAGUE ROAD COLFAX IA 50054--0185 (515)674-3713 SEMI-PUBLIC MINOR 6732 1479001 0033782 8/31/2021 TEMPLETON CITY OF STP ½ MILE SOUTH OF TOWN SOUTH OF HWY 141 TEMPLETON IA 51463- (712)669-3359 MUNICIPAL MINOR 4952 1479101 0053056 12/31/2023 TEMPLETON RYE DISTILLERY 209 E. 3RD STREET TEMPLETON IA 51463-- INDUSTRIAL MINOR 2085 1863496 0080420 8/31/2022 Tentinger Feedlot 4593 J Avenue CLEGHORN IA 51014-- (712)436-2663 AGRICULTURAL MINOR 0211 3500900 0062472 9/30/2021 TERRACE HILL SANITARY DISTRICT STP NE 1/4 of SW 1/4 of S 15, T 92 N, R 20 W HAMPTON IA 50441- (641)456-4107 MUNICIPAL MINOR 4952 3080001 0036609 6/30/2023 TERRIL CITY OF STP 1675' SO. OF INTERSECT.OF 240TH ST. & 320TH AVE. TERRIL IA 51364--0125 (712)853-6319 MUNICIPAL MINOR 4952 8463065 0083992 5/31/2023 Terry Kooima Feedlot 3219 Eagle Ave. ROCK VALLEY IA 51247-- (712)476-2225 AGRICULTURAL MINOR 0211 8200100 0001180 6/30/2022 TEXPAR ENERGY, LLC 601 EAST FRONT STREET DAVENPORT IA 52804- (563)324-5276 INDUSTRIAL MINOR 5171 6066472 0053196 7/31/2025 THANE FLUIT FEEDLOT 1985 COOLIDGE AVE. INWOOD IA 51240-- AGRICULTURAL MINOR 0211 8858001 0079936 6/30/2017 THAYER CITY OF STP 1/4 MILE NE OF 4TH ST & 5TH AVE INTERSECTION THAYER IA 50254-- (641)782-5744 MUNICIPAL MINOR 4952 9000106 0083453 10/31/2016 THE AMERICAN BOTTLING COMPANY 14955 6th St OTTUMWA IA 52501-- INDUSTRIAL MINOR 2086 2424103 0079456 1/31/2022 THE ANDERSONS MARATHON HOLDINGS, LLC 2404 W Highway 30 DENISON IA 51442-- (712)263-7061 INDUSTRIAL MINOR 2869 5715145 0082236 5/31/2024 THE EASTERN IOWA AIRPORT 2515 ARTHUR COLLINS PARKWAY SW CEDAR RAPIDS IA 52404-- (319)362-3131 STORMWATER MINOR 4581 3126803 0084115 6/30/2022 THE GRAND OPERA HOUSE 135 WEST 8TH ST DUBUQUE IA 52001-- (563)588-4356 INDUSTRIAL MINOR 7922 5625103 0001171 10/31/2025 THE SCOTTS COMPANY 1910 48TH. STREET FORT MADISON IA 52627-- (319)376-5000 INDUSTRIAL MINOR 2879 7700911 0066966 3/31/2025 THOMAS MITCHELL PARK 0.1 MILES NW OF NE DEVOTIE DRIVE & NE 108TH STREET MITCHELLVILLE IA 50169-- (515)323-5300 SEMI-PUBLIC MINOR 9512 9585001 0068683 2/28/2023 THOMPSON CITY OF STP 1/2 MILE S OF HWY 9 & 110TH AVE INTERSECTION THOMPSON IA 50478-- (641)584-2785 MUNICIPAL MINOR 4952 4680001 0058581 7/31/2021 THOR CITY OF STP CITY CLERK, CITY HALL THOR IA 50591- (515)378-3333 MUNICIPAL MINOR 4952 1781001 0033201 1/31/2023 THORNTON CITY OF STP 1/2 MILE EAST OF TOWN ON 120TH STREET THORNTON IA 50479--0088 (641)998-2415 MUNICIPAL MINOR 4952 8800401 0074594 8/31/2019 THREE MILE LAKE CAMPGROUND-STP 1542 CAMPGROUND RD AFTON IA 50830-- (641)782-5744 SEMI-PUBLIC MINOR 7033 3671000 0052637 12/31/2022 THURMAN, CITY OF WATER WORKS 800 FILLMORE ST. THURMAN IA 51654-- MUNICIPAL-WT MINOR 4941 5288001 0036617 10/31/2025 TIFFIN CITY OF STP 109 BROWN STREET TIFFIN IA 52340- (319)545-2370 MUNICIPAL MINOR 4952 2300300 0069116 1/14/2007 TIMBER CREEK ESTATES HOMEOWNER'S ASSOCIATION, INC 2966 265TH STREET DE WITT IA 52742- (563)659-5320 SEMI-PUBLIC MINOR 8641 5200303 0069108 7/31/2021 TIMBER TRAILS ESTATES HOMEOWNER'S ASSOCIATION END OF CREEKSIDE LN IOWA CITY IA 52240-- (319)338-9387 SEMI-PUBLIC MINOR 8641

16 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Facility Address Facility City Facility Facility Zip Facility Phone Permit Type Class. SIC State Code 6400601 0068659 9/30/2021 TIMBER WOLF VALLEY MHP 2552 SMITH AVE MARSHALLTOWN IA 50158-- (641)753-4017 SEMI-PUBLIC MINOR 6515 5200311 0070076 6/30/2021 TIMBERLAKE HOMEOWNERS ASSOCIATION 2628 TRAIL RIDGE DRIVE NW SWISHER IA 52338- (319)857-4850 SEMI-PUBLIC MINOR 8641 2900606 0068250 3/31/2016 TIMBERLINE ESTATES, LTD 14876 WASHINGTON ROAD WEST BURLINGTON IA 52655- (440)838-4868 SEMI-PUBLIC MINOR 6515 8080001 0074471 8/31/2022 TINGLEY, CITY-OF-STP-SIRWA 1/2 MILE NORTH OF TINGLEY ON 245TH AVE. TINGLEY IA 50863-- (641)782-5744 MUNICIPAL MINOR 4952 1689001 0032727 5/31/2021 TIPTON CITY OF STP (WEST) 901 W. SOUTH STREET TIPTON IA 52772--1633 (319)886-3065 MUNICIPAL MAJOR 4952 5588001 0033375 10/31/2023 TITONKA CITY OF STP 1050 FT EAST OF DIECKMAN AVE., NE ON 330TH ST. TITONKA IA 50480- (515)928-2850 MUNICIPAL MINOR 4952 8676001 0033103 6/30/2022 TOLEDO CITY OF STP 1200 TRAIL DRIVE TOLEDO IA 52342-- (641)484-2160 MUNICIPAL MAJOR 4952 2383001 0076996 10/31/2023 TORONTO, CITY OF-STP 0.15 MILES N OF SPRING ST & WASHINGTON ST INTERSECT TORONTO IA 52777- (563)678-2323 MUNICIPAL MINOR 4952 5715144 0079987 6/30/2026 TOWN CENTRE 221 3RD AVE SE CEDAR RAPIDS IA 52401-- (319)540-5180 INDUSTRIAL MINOR 7389 6382001 0081647 8/31/2026 TRACY CITY OF STP (MAHASKA RURAL WATER SYSTEMS, INC.) 0.6 MILES W OF BRADLEY ST & SCHOOL ST INTERSECTION TRACY IA 50256-- MUNICIPAL MINOR 4952 8681001 0035033 1/31/2023 TRAER MUNICIPAL UTILITIES .3 MILES NORTH OF 1ST STREET ON Q AVENUE TRAER IA 50675- (319)478-8760 MUNICIPAL MINOR 4952 8456485 0080594 11/30/2025 Trans Ova Genetics 2938 380th Street SIOUX CENTER IA 51250-- (712)722-3586 AGRICULTURAL MINOR 0211 7866002 0039977 9/30/2022 TREYNOR CITY OF STP (NORTHWEST) 0.3 MILE NORTHWEST OF CITY HALL TREYNOR IA 51575-- (712)487-3787 MUNICIPAL MINOR 4952 5485500 0068390 10/31/2002 TRI-COUNTY COMMUNITY SCHOOL 3003 HWY 22 THORNBURG IA 50255- (641)634-2408 SEMI-PUBLIC MINOR 8211 9760300 0077780 5/31/2022 Triple U Ranch, LLC 4208 100th St WASHTA IA 51061-- (712)372-4386 AGRICULTURAL MINOR 0211 0975001 0033120 4/30/2026 TRIPOLI CITY OF STP EAST END OF EAST 1ST AVENUE NE TRIPOLI IA 50676-- (319)882-4801 MUNICIPAL MINOR 4952 9779803 0084034 10/31/2022 Trosper-Hoyt County Services Building 822 Douglas St. SIOUX CITY IA 51101-- (712)279-6539 INDUSTRIAL MINOR 7389 5786901 0041262 1/31/2024 TROY MILLS SANITARY DISTRICT 3218 COGGON ROAD TROY MILLS IA 52344- (319)224-3357 MUNICIPAL MINOR 4952 1182001 0079782 3/2/2013 TRUESDALE, CITY OF STP NORTH EDGE OF CITY, WEST OF RAILROAD AVE TRUESDALE IA 50592-- (712)262-8847 MUNICIPAL MINOR 4952 6167001 0040991 8/31/2023 TRURO CITY OF STP 1/2 MILE EAST OF S. EAST ST. AND EAST PRAIRIE ST. INTERSECTION TRURO IA 50257-- (641)765-4586 MUNICIPAL MINOR 4952 9600500 0067423 10/31/2021 TURKEY VALLEY COMMUNITY SCHOOL 3219 State Highway 24 JACKSON JUNCTION IA 52171- (319)776-6011 SEMI-PUBLIC MINOR 8211 6309500 0067041 6/30/2016 TWIN CEDARS COMMUNITY SCHOOL 2204 HIGHWAY G71 BUSSEY IA 50044- (641)944-5241 SEMI-PUBLIC MINOR 8211 1300903 0070114 1/31/2025 TWIN LAKES UTILITIES STP 2270 SOUTH TWIN LAKES ROAD ROCKWELL CITY IA 50579-- (712)297-8720 MUNICIPAL MINOR 4952 3100300 0061298 3/31/2024 TWIN RIDGE SUBDIVISION 10420 KEY WEST DRIVE DUBUQUE IA 52003- (563)581-0359 MUNICIPAL MINOR 4952 5800100 0003361 4/30/2021 TYSON FRESH MEATS, INC. - COLUMBUS JUNCTION HIGHWAY 70 NORTH COLUMBUS JUNCTION IA 52738- (319)728-7432 INDUSTRIAL MAJOR 2011 2500100 0002089 12/31/2024 TYSON FRESH MEATS, INC. - PERRY 1350 I COURT PERRY IA 50220- (515)465-5363 INDUSTRIAL MAJOR 2011 1178105 0064998 6/30/2025 TYSON FRESH MEATS, INC. - STORM LAKE FLINDT & RICHLAND STORM LAKE IA 50588-- (712)732-7433 INDUSTRIAL MAJOR 2011 5200908 0084298 10/31/2023 U.S. ARMY - CORALVILLE DAM OFF PRAIRIE DU CHIEN ROAD IN CORALVILLE, SOUTH OF DAM CORALVILLE IA 52240-- (319)338-3543 SEMI-PUBLIC MINOR 7032 7869001 0036986 12/31/2022 UNDERWOOD CITY OF STP 218 2ND STREET - P.O. BOX 40 UNDERWOOD IA 51576--0040 (712)566-2373 MUNICIPAL MINOR 4952 4291001 0034266 8/31/2020 UNION CITY OF STP SE CORNER OF TOWN ON RAILROAD STREET UNION IA 50258-- (515)486-2302 MUNICIPAL MINOR 4952 0497001 0074373 12/14/2013 UNIONVILLE, CITY OF STP 1/4 MILE SOUTH OF OAK STREET AND UNION STREET UNIONVILLE IA 52594--0056 (641)452-6758 MUNICIPAL MINOR 4952 0800500 0067181 4/30/2016 UNITED COMMUNITY SCHOOL 1284 U AVENUE BOONE IA 50036- (515)432-5319 SEMI-PUBLIC MINOR 8211 2900103 0063606 3/31/2019 UNITED STATES GYPSUM COMPANY 13425 210TH STREET SPERRY IA 52650-- (319)394-3184 INDUSTRIAL MINOR 2493 9400103 0062359 12/31/2015 UNITED STATES GYPSUM COMPANY 2110 Paragon Avenue FORT DODGE IA 50501-- (515)573-1818 INDUSTRIAL MINOR 2493 5290002 0078930 4/30/2025 UNIVERSITY HEIGHTS, CITY OF MS4 1004 MELROSE AVENUE UNIVERSITY HEIGHTS IA 52246-- (319)337-6900 STORMWATER MINOR 4952 5225108 0069159 3/31/2022 UNIVERSITY OF IOWA COOLING TOWER BLOWDOWN 208 WEST BURLINGTON STREET IOWA CITY IA 52242- (319)335-5168 INDUSTRIAL MINOR 8221 5225006 0078182 4/30/2024 UNIVERSITY OF IOWA MS4 UNIVERSITY OF IOWA, 350 USB IOWA CITY IA 52242-- (319)335-6190 STORMWATER MINOR 4952 5225101 0003077 5/31/2022 UNIVERSITY OF IOWA POWER PLANT 207 W. BURLINGTON STREET IOWA CITY IA 52242--1523 (319)335-5132 INDUSTRIAL MAJOR 4911 5225105 0071919 6/30/2023 UNIVERSITY OF IOWA WATER TREATMENT PLANT 208 WEST BURLINGTON STREET IOWA CITY IA 52242- (319)335-5168 MUNICIPAL-WT MINOR 4941 0709501 0063941 4/30/2026 UNIVERSITY OF NORTHERN IOWA 30TH STREET AND NEBRASKA CEDAR FALLS IA 50614--0192 (319)273-2092 INDUSTRIAL MINOR 4911 0709004 0079952 8/31/2026 UNIVERSITY OF NORTHERN IOWA MS4 1801 W. 31ST ST. CEDAR FALLS IA 50614-- (319)273-3189 STORMWATER MINOR 4952 6290001 0047741 5/31/2025 UNIVERSITY PARK CITY OF STP 1/2 MILE SW OF HWY 92 & OSBURN AVE INTERSECTION UNIVERSITY PARK IA 52595- (641)673-8851 MUNICIPAL MINOR 4952 1200107 0072231 6/30/2019 UNVERFERTH MFG. CO., INC. 27612 Temple Avenue SHELL ROCK IA 50670-- (319)885-6571 INDUSTRIAL MINOR 3523 0680001 0059072 2/28/2026 URBANA CITY OF STP 2101 1/2 FAITH STREET URBANA IA 52345- (319)443-2171 MUNICIPAL MINOR 4952 7780002 0078620 4/30/2024 URBANDALE, CITY OF MS4 3600 86TH ST URBANDALE IA 50322-- (515)278-3950 STORMWATER MINOR 4952 6762001 0043010 1/31/2022 UTE CITY OF STP SW OF HWY 183 AND TEAK AVE INTERSECTION UTE IA 51060- (712)885-3331 MUNICIPAL MINOR 4952 2452001 0032654 4/30/2021 VAIL CITY OF STP SW OF TOWN BETWEEN HWY 30 AND EAST BOYER RIVER VAIL IA 51465- (712)677-8832 MUNICIPAL MINOR 4952 5500112 0077194 3/31/2024 VALERO RENEWABLE FUELS CO, LLC - dba VALERO LAKOTA PLANT 1660 428TH STREET LAKOTA IA 50451- (515)886-2222 INDUSTRIAL MINOR 2869 9433115 0079227 5/31/2015 VALERO RENEWABLE FUELS COMPANY, LLC 1930 HAYES AVENUE FORT DODGE IA 50501-- (515)955-5011 INDUSTRIAL MINOR 2869 7100104 0080829 2/28/2018 VALERO RENEWABLE FUELS COMPANY, LLC 3260 VAN BUREN AVE. HARTLEY IA 51346-- (712)928-5815 INDUSTRIAL MINOR 2869 1100108 0080209 2/28/2025 VALERO RENEWABLE FUELS CO., LLC - dba VALERO ALBERT CITY PLANT 2356 510TH STREET ALBERT CITY IA 50510-- (712)843-5123 INDUSTRIAL MINOR 2869 3400109 0080403 10/31/2021 VALERO RENEWABLE FUELS CO., LLC dba VALERO CHARLES CITY PLANT 1787 Quarry Rd CHARLES CITY IA 50616-- (641)715-3016 INDUSTRIAL MINOR 2869 8456476 0077682 9/30/2021 Valley View Feedlots, Inc. 4874 BIRCH AVE HAWARDEN IA 51023-- (712)552-2110 AGRICULTURAL MINOR 0211 9000602 0069663 2/29/2024 VALLEY VILLAGE MOBILE HOME COURT 11620 RABBIT RUN RD OTTUMWA IA 52501- (641)682-8481 SEMI-PUBLIC MINOR 6515 8456760 0079880 11/30/2022 Van Beek Feedlot 1921 270TH STREET INWOOD IA 51240-- (712)470-1456 AGRICULTURAL MINOR 0211 8456294 0079464 1/31/2026 Van Berkel Farms - Home Site 3833 Eagle Ave SIOUX CENTER IA 51250-- (712)722-1415 AGRICULTURAL MINOR 0211 8458505 0083089 10/31/2021 Van Berkel Farms - Kooi Site 3687 ELMWOOD AVE. SIOUX CENTER IA 51250-- (712)722-2112 AGRICULTURAL MINOR 0211 4000104 0070033 8/31/2022 VAN DIEST SUPPLY COMPANY 1434 220TH ST. WEBSTER CITY IA 50595-- (515)832-5691 INDUSTRIAL MINOR 2879 8457166 0052395 7/31/2026 Van Driessen Farms, Inc. 1921 420th Street HAWARDEN IA 51023-- (712)541-7386 AGRICULTURAL MINOR 0211 3300100 0000809 1/31/2026 VAN ELDEREN INC. 3281 40TH STREET ARLINGTON IA 50606- (563)933-4521 INDUSTRIAL MINOR 2023 8456950 0079529 2/29/2024 Van Essen Feedlot 2730 340th St ROCK VALLEY IA 51247-- (712)476-5905 AGRICULTURAL MINOR 0211 8457021 0082848 6/30/2025 Van Holland Farm, Inc 3543 Fig Avenue ROCK VALLEY IA 51247-- (712)722-3491 AGRICULTURAL MINOR 0211 0685001 0033341 1/31/2023 VAN HORNE CITY OF STP NORTH OF 1ST AVENUE ON 11TH STREET VAN HORNE IA 52346-- (319)228-8609 MUNICIPAL MINOR 4952 2570001 0036021 6/30/2022 VAN METER CITY OF STP 0.3 MILES E OF THE MILL ST. & MAIN ST. INTERSECTION VAN METER IA 50261- (515)996-2644 MUNICIPAL MINOR 4952 3956251 0078590 10/31/2022 Van Meter Feedyard, LLC 2197 Chestnut Road GUTHRIE CENTER IA 50115-- (641)747-3228 AGRICULTURAL MINOR 0211 8457694 0080659 1/31/2023 Van Voorst Cattle, Inc. 3241 360th Street SIOUX CENTER IA 51250-- (712)722-2289 AGRICULTURAL MINOR 0211 8459625 0083712 10/31/2022 Van Voorst Dairy 3941 Dove Avenue SIOUX CENTER IA 51250-- (712)722-4530 AGRICULTURAL MINOR 0241 2783001 0066354 8/31/2024 VAN WERT CITY OF STP EAST EDGE OF TOWN FROM INTERSECT OF EAST 3RD ST. & HARRISON ST. VAN WERT IA 50262-- MUNICIPAL MINOR 4952 8461718 0083381 5/31/2024 Van Wyhe Feedlot 4111 Dove Avenue IRETON IA 51027-- (712)278-2567 AGRICULTURAL MINOR 0211 7257127 0079197 3/31/2022 Vander Lee Feedlot 6251 230TH STREET MELVIN IA 51350-- (712)736-2589 AGRICULTURAL MINOR 0211 8463232 0082899 12/31/2025 Vander Waal Brothers, Inc. 2745 IBEX Avenue HULL IA 51239-- (712)439-2884 AGRICULTURAL MINOR 0241 7642000 0051122 4/30/2022 VARINA, CITY OF WTP 311 MAIN ST. FONDA IA 50593-- MUNICIPAL-WT MINOR 4941 6256457 0077798 1/31/2023 Ver Steegh Brothers Farm Partnership 1723 310th Street EDDYVILLE IA 52553-- (641)673-6902 AGRICULTURAL MINOR 0211 8562102 0053269 5/31/2026 VERBIO NEVADA, LLC 59219 W LINCOLN HWY NEVADA IA 50201-- (806)306-4777 INDUSTRIAL MINOR 0723 8456496 0080608 12/31/2022 Vermeer & Sons Farms-Feedlot 4220 Harrison Ave. SIOUX CENTER IA 51250-- (712)722-4593 AGRICULTURAL MINOR 0211 4875001 0058190 1/31/2023 VICTOR CITY OF STP 500 FIRST STREET VICTOR IA 52347- (319)647-3750 MUNICIPAL MINOR 4952 0709109 0078140 2/29/2024 VIKING PUMP, INC. - VIKING ROAD FACILITY 711 VIKING RD. CEDAR FALLS IA 50613-- (319)266-1741 INDUSTRIAL MINOR 3561 6985001 0032549 2/28/2023 VILLISCA CITY OF STP UNION AVE 0.2 MILES SOUTH OF 9TH ST VILLISCA IA 50864-- (712)826-2282 MUNICIPAL MINOR 4952 9486001 0032930 1/31/2022 VINCENT CITY OF STP OFF OF 140TH ST., SE OF TOWN VINCENT IA 50594- (515)356-4365 MUNICIPAL MINOR 4952 0688001 0035891 6/30/2025 VINTON CITY OF STP 0.7 MILES S OF THE 25TH AVE DR & 10TH AVE INTERSECTION VINTON IA 52349- (319)472-3353 MUNICIPAL MAJOR 4952 2285001 0062952 7/31/2023 VOLGA CITY OF STP ON CRYSTAL RD 1/2 MILE EAST OF INTERSECTION OF CO RD C2W VOLGA IA 52077-- (319)767-4285 MUNICIPAL MINOR 4952 3371001 0032492 3/31/2023 WADENA, CITY OF STP END OF LANE EAST OF WATER AVE & RIVER ST INTERSECTION WADENA IA 52169-- (563)774-2875 MUNICIPAL MINOR 4952 7085001 0061891 11/30/2024 WALCOTT CITY OF STP (SOUTH) 600 WEST CEDAR LANE DRIVE WALCOTT IA 52773- (563)284-6571 MUNICIPAL MAJOR 4952 0690001 0062545 4/30/2024 WALFORD CITY OF STP 120 5TH STREET N WALFORD IA 52351- (319)846-3103 MUNICIPAL MINOR 4952 5792001 0059081 9/30/2022 WALKER CITY OF STP 0.3 MILES S OF BETTYS GROVE RD & GRANT ST INTERSECT WALKER IA 52352- (319)361-4831 MUNICIPAL MINOR 4952 8166001 0033065 5/31/2022 WALL LAKE CITY OF STP SOUTH OF TOWN; SW OF INTERSECT SOUTH CENTER ST & WALL LAKE RD WALL LAKE IA 51466- (712)664-2216 MUNICIPAL MINOR 4952 3290001 0062812 3/31/2023 WALLINGFORD CITY OF STP APPROX 0.6 MILES SE OF ST JAMES AVE AND 3RD ST INTERSECT WALLINGFORD IA 51365-- (712)867-4585 MUNICIPAL MINOR 4952 7872001 0042986 4/29/2006 WALNUT CITY OF STP OFF OF WESTGATE RD., SE OF TOWN WALNUT IA 51577- (712)784-3711 MUNICIPAL MINOR 4952 7820101 0004308 7/31/2026 WALTER SCOTT JR. ENERGY CENTER 7215 NAVAJO ST COUNCIL BLUFFS IA 51501--8712 (712)366-5315 INDUSTRIAL MAJOR 4911

17 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Facility Address Facility City Facility Facility Zip Facility Phone Permit Type Class. SIC State Code 2200105 0052856 1/11/2023 WALZ ENERGY FEEDLOT AND BIOGAS PROJECT 22578 HWY 18 MONONA IA 52159-- (319)930-0144 STORMWATER MINOR 0211 5879001 0047961 8/31/2022 WAPELLO CITY OF STP 1/2 MILE SW OF WATER ST AND 2ND ST WAPELLO IA 52653- (319)523-4121 MUNICIPAL MAJOR 4952 5400800 0082511 2/28/2015 WAPELLO RWA WATER TREATMENT PLANT 26569 HIGHWAY 21 DELTA IA 52501-- MUNICIPAL-WT MINOR 4941 2300401 0080799 11/30/2024 WAPSI CENTER CAMP DORMITORY 31555 52ND AVENUE DIXON IA 52745-- (563)328-3286 SEMI-PUBLIC MINOR 7032 1037101 0060607 2/28/2022 WAPSIE VALLEY CREAMERY, INC. 300 10TH STREET NE INDEPENDENCE IA 50644- (319)334-7193 INDUSTRIAL MINOR 2022 7820113 0077178 1/31/2023 WARREN DISTRIBUTION, INC.-STORM WATER DISCHARGE 2850 RIVER ROAD COUNCIL BLUFFS IA 51501--7048 (402)977-5424 STORMWATER MINOR 2992 0990105 0071714 11/30/2016 WARTBURG COLLEGE 100 WARTBURG BLVD WAVERLY IA 50677- (319)352-8318 INDUSTRIAL MINOR 8221 0700904 0074241 10/31/2023 WASHBURN AREA-STP BLACK HAWK COUNTY NORTH OF INTERSECT OF U.S. HWY 218 & FOULK RD WASHBURN IA 50702- (319)833-3003 MUNICIPAL MINOR 4952 9271001 0032433 2/28/2021 WASHINGTON CITY OF STP 1065 WEST BUCHANAN ST WASHINGTON IA 52353- (319)653-6584 MUNICIPAL MAJOR 4952 3400501 0080225 3/31/2022 WASHINGTON ELEMENTARY SCHOOL 1406 NORTH GRAND AVENUE CHARLES CITY IA 50616-- (641)257-6500 INDUSTRIAL MINOR 8211 1880001 0043001 5/31/2024 WASHTA CITY OF STP HWY 31 1/4 MILE SOUTH OF RITZ RD. INTERSECTION WASHTA IA 51061--0152 (712)447-6216 MUNICIPAL MINOR 4952 9200302 0077089 12/31/2025 WATER'S EDGE SUBDIVISION - WWTF 2460 220TH STREET WASHINGTON IA 52353- (319)653-2889 SEMI-PUBLIC MINOR 8641 0790001 0042650 5/31/2026 WATERLOO CITY OF STP 3505 EASTON AVENUE WATERLOO IA 50702- (319)291-4553 MUNICIPAL MAJOR 4952 0700903 0072290 4/30/2025 WATERLOO RESIDENTIAL CORRECTION FACILITY 314 E. 6TH. STREET WATERLOO IA 50704- (319)291-2087 INDUSTRIAL MINOR 9223 0790002 0078301 4/30/2024 WATERLOO, CITY OF MS4 CITY OF WATERLOO WATERLOO IA 59793-- (319)291-4312 STORMWATER MINOR 4952 0397001 0063517 8/31/2022 WATERVILLE CITY OF STP BARR DR. 0.2 OF A MILE WEST OF WATERVILLE RD. WATERVILLE IA 52170- (319)535-7261 MUNICIPAL MINOR 4952 0692001 0079871 9/30/2025 WATKINS, COMMUNITY OF 125 INDUSTRIAL DR WATKINS IA 52354-- (641)522-7416 MUNICIPAL MINOR 4952 3375001 0071048 4/30/2026 WAUCOMA CITY OF STP 28680 V AVE WAUCOMA IA 52101- (319)240-9367 MUNICIPAL MINOR 4952 2573002 0078875 8/31/2024 WAUKEE, CITY OF MS4 230 HIGHWAY 6 WAUKEE IA 50263-- (515)987-4363 STORMWATER MINOR 4952 0398001 0033081 9/30/2021 WAUKON CITY OF STP 740 ROSSVILLE ROAD WAUKON IA 52172- (319)568-2683 MUNICIPAL MAJOR 4952 0990001 0033197 7/31/2025 WAVERLY CITY OF STP 1401 8TH ST SE WAVERLY IA 50677-- (319)352-6248 MUNICIPAL MAJOR 4952 0990106 0080268 8/31/2023 WAVERLY MUNICIPAL FIRE DEPARTMENT 123 1ST STREET SW WAVERLY IA 50677-- (319)352-5521 INDUSTRIAL MINOR 9224 4490001 0047953 1/31/2022 WAYLAND, CITY OF STP DOUGLAS & DELAWARE AVE WAYLAND IA 52654- (319)256-3276 MUNICIPAL MINOR 4952 8822101 0077313 2/28/2026 WDC ACQUISITION, LLC dba WELLMAN 1746 Commerce Rd CRESTON IA 50801-- (641)782-8521 STORMWATER MINOR 3365 2178001 0083666 5/31/2023 WEBB, CITY OF STP 2000 FEET N OF 480TH ST & 1600 FEET W OF 290TH AVE WEBB IA 51366-- (712)262-8847 MUNICIPAL MINOR 4952 4063002 0066281 12/31/2021 WEBSTER CITY MUNICIPAL BLDG. 400 2ND STREET WEBSTER CITY IA 50595--0217 (515)832-9141 INDUSTRIAL MINOR 9221 4063001 0036625 2/28/2021 WEBSTER CITY, CITY OF STP 101 EAST OHIO STREET WEBSTER CITY IA 50595--0217 (515)832-9185 MUNICIPAL MAJOR 4952 5491001 0078719 9/21/2014 WEBSTER, CITY OF STP WEST OF HWY 149 1/2 MILE NORTH OF TOWN WEBSTER IA 52355-- (641)472-6177 MUNICIPAL MINOR 4952 7500108 0076988 7/31/2026 WEINRICH TRUCK LINE, INC. - LAOP 27932 C60 HINTON IA 51024- (712)947-4887 OPERATION MINOR 7542 2788001 0069167 5/31/2022 WELDON CITY OF STP 3/4 MILE SOUTH OF WELDON WEST OF R48 WELDON IA 50264- (641)445-6380 MUNICIPAL MINOR 4952 7356421 0080713 8/31/2021 Wellhausen Feedlots 2311 Maple Ave CLARINDA IA 51632-- (712)542-2009 AGRICULTURAL MINOR 0211 9276001 0032301 6/30/2026 WELLMAN CITY OF STP 205 1st AVE WELLMAN IA 52356- (319)646-2154 MUNICIPAL MINOR 4952 7540104 0073075 5/31/2025 WELLS ENTERPRISES, INC. NORTH ICE CREAM PLANT 121 2nd Avenue SE LE MARS IA 51031-- (712)546-4000 INDUSTRIAL MINOR 2024 7540105 0073083 7/31/2026 WELLS' ENTERPRISES, INC.(SOUTH ICE CREAM PLANT) 1191 18TH STREET SW LE MARS IA 51031-- (712)546-4000 INDUSTRIAL MINOR 2026 3890001 0042803 11/30/2022 WELLSBURG CITY OF STP 14090 185TH STREET WELLSBURG IA 50680- (515)869-5516 MUNICIPAL MINOR 4952 2391001 0071196 1/31/2024 WELTON CITY OF STP OFF OF 190TH ST./E63 & .3 MILES WEST of HWY 61; SOUTH OF TOWN WELTON IA 52774- (319)659-3429 MUNICIPAL MINOR 4952 1456300 0077810 3/31/2022 Wendl Feedlot 27648 Olympic Ave CARROLL IA 51401-- (712)683-5725 AGRICULTURAL MINOR 0211 2300103 0080951 4/24/2013 WENDLING QUARRIES - BEHR WASH BAY 2265 260TH STREET DE WITT IA 52742-- (563)659-9181 INDUSTRIAL MINOR 1422 7000107 0080926 5/31/2024 WENDLING QUARRIES - MOSCOW QUARRY 1148 NOBLE AVENUE MOSCOW IA 52760-- (563)659-9181 INDUSTRIAL MINOR 1422 5700117 0080934 5/31/2025 WENDLING QUARRIES - ROBINS QUARRY 605 NORTH MENTZER ROAD ROBINS IA 52328--9605 (563)659-9181 INDUSTRIAL MINOR 1422 5592001 0033472 8/31/2017 WESLEY CITY OF STP 0.5 MILE NORTHWEST OF TOWN WESLEY IA 50483--0215 (515)679-4292 MUNICIPAL MINOR 4952 9100401 0075523 8/31/2022 WESLEY WOODS CAMP & RETREAT CENTER 10896 NIXON STREET INDIANOLA IA 50125--9013 (515)961-4523 SEMI-PUBLIC MINOR 7032 7470001 0036994 10/31/2024 WEST BEND CITY OF STP NORTHEAST OF INTERSECTION 570 AVE. & 485 ST. WEST BEND IA 50597- (515)887-2181 MUNICIPAL MINOR 4952 1694001 0032859 8/31/2022 WEST BRANCH CITY OF STP OFF OF FAWCETT DR., SOUTH SIDE OF TOWN WEST BRANCH IA 52358- (319)643-5888 MUNICIPAL MINOR 4952 1600600 0067946 5/21/2014 WEST BRANCH MOBILE HOME 157 POWELL STREET WEST BRANCH IA 52358- (319)643-5645 SEMI-PUBLIC MINOR 6515 2985001 0033669 7/31/2026 WEST BURLINGTON CITY OF STP 1800 WASHINGTON RD. WEST BURLINGTON IA 52655-- (319)752-6101 MUNICIPAL MAJOR 4952 1400900 0052484 2/28/2022 WEST CENTRAL IOWA RURAL WATER ASSOCIATION 10675 330TH MANNING IA 51455-- MUNICIPAL-WT MINOR 4941 9281001 0072460 8/31/2019 WEST CHESTER CITY OF STP 1665 HWY 92 WEST CHESTER IA 52359- (319)698-2600 MUNICIPAL MINOR 4952 7785002 0078778 3/31/2025 WEST DES MOINES, CITY OF MS4 4200 MILLS CIVIC PARKWAY WEST DES MOINES IA 50265--0320 (515)222-3600 STORMWATER MINOR 4952 1856845 0080616 9/30/2022 West Fork Feedlot (formerly Pat Staab Feedlot) 5868 C Ave. MARCUS IA 51035-- (712)376-2384 AGRICULTURAL MINOR 0211 8200906 0066974 11/30/2024 WEST LAKE PARK C/O ROGER A. KEAN, DIRECTOR DAVENPORT IA 52804- (563)328-3280 SEMI-PUBLIC MINOR 9512 7073001 0031691 1/31/2024 WEST LIBERTY CITY OF STP 615 EAST A STREET WEST LIBERTY IA 52776- (319)627-2173 MUNICIPAL MAJOR 4952 5691001 0043109 7/31/2026 WEST POINT CITY OF STP 3450 FEET NE OF 9TH STREET AND EAST AVENUE INTERSECTION WEST POINT IA 52656- (319)837-6313 MUNICIPAL MINOR 4952 3383003 0035378 2/29/2020 WEST UNION CITY OF STP 9875 ECHO VALLEY ROAD WEST UNION IA 52175- (319)422-5744 MUNICIPAL MINOR 4952 4880901 0077372 12/31/2021 WEST/HIGH AMANA SANITARY DISTRICT 823 220TH TRAIL AMANA IA 52203- MUNICIPAL MINOR 4952 3100118 0081175 10/29/2012 WESTERN DUBUQUE BIODIESEL, LLC 904 JAMESMEIR ROAD FARLEY IA 52046-- (563)744-3554 INDUSTRIAL MINOR 2869 8100112 0079855 11/30/2024 WESTERN IOWA ENERGY, LLC 1220 S. CENTER ST. WALL LAKE IA 51466-- INDUSTRIAL MINOR 2869 7589001 0042960 4/30/2024 WESTFIELD CITY OF STP 1/2 MILE W OF RAILROAD DR & PORTLAND ST INTERSECT WESTFIELD IA 51062- (712)568-2631 MUNICIPAL MINOR 4952 3379001 0075353 4/30/2025 WESTGATE, CITY OF-STP TOWN RD & 100TH ST WESTGATE IA 50681--0187 (563)578-3258 MUNICIPAL MINOR 4952 2458001 0040274 6/30/2020 WESTSIDE CITY OF STP HIGHWAY 30 AND 390TH STREET WESTSIDE IA 51467- (712)663-4493 MUNICIPAL MINOR 4952 9700501 0070289 9/30/2022 WESTWOOD COMMUNITY SCHOOL 1000 REBEL WAY SLOAN IA 51055- (712)428-3355 INDUSTRIAL MINOR 8211 5493001 0032468 4/29/2006 WHAT CHEER CITY OF STP ON CORNER OF E MILL ST. & OHIO ST., EAST SIDE OF TOWN WHAT CHEER IA 50268- (515)634-2590 MUNICIPAL MINOR 4952 2394001 0058912 9/30/2024 WHEATLAND CITY OF STP HWY 30 AND Y4E, SOUTH OF TOWN WHEATLAND IA 52777- (563)374-1551 MUNICIPAL MINOR 4952 4802102 0000744 3/31/2025 WHIRLPOOL CORP - AMANA APPLIANCE DIVISION 2800 220TH TRAIL AMANA IA 52204--0001 (319)622-2520 INDUSTRIAL MAJOR 3632 6769001 0032719 8/31/2021 WHITING CITY OF STP 605 WHITTIER WHITING IA 51063--9998 (712)458-2414 MUNICIPAL MINOR 4952 5595001 0033430 9/30/2024 WHITTEMORE CITY OF STP 0.3 MILE WEST OF MAIN STREET & 3RD STREET WHITTEMORE IA 50598- (515)884-2361 MUNICIPAL MINOR 4952 4293001 0062448 9/30/2018 WHITTEN CITY OF STP (IRUA) 1/2 MILE WEST OF HWY S75 ON 310TH STREET WHITTEN IA 50269-- (641)792-7011 MUNICIPAL MINOR 4952 1456552 0080250 4/30/2022 Wiederin Feedlot 14374 MAHOGANY AVE CARROLL IA 51401-- (712)792-4143 AGRICULTURAL MINOR 0211 8222604 0064432 7/31/2026 WILD ROSE MOBILE HOME PARK 4847 W. KIMBERY ROAD DAVENPORT IA 52806- (563)299-0931 SEMI-PUBLIC MINOR 6515 6100401 0048096 8/31/2026 Wildwood Hills Ranch 2552 UNION LANE SAINT CHARLES IA 50240-- (641)396-2414 SEMI-PUBLIC MINOR 8322 4070001 0058483 5/31/2024 WILLIAMS CITY OF STP 1/2 MILE EAST OF INTERSECTION OF BEECH ST & 2ND ST WILLIAMS IA 50271- (515)854-2260 MUNICIPAL MINOR 4952 4884001 0033880 4/30/2024 WILLIAMSBURG CITY OF STP OFF OF INDUSTRIAL PARK PL ON EAST SIDE OF TOWN WILLIAMSBURG IA 52361- (319)668-2695 MUNICIPAL MINOR 4952 5946001 0076449 9/30/2016 WILLIAMSON CITY OF (RATHBUN REGIONAL WATER ASSN) 0.4 MILES SW OF 255TH AVE & H20 INTERSECTION WILLIAMSON IA 50272- (515)647-2416 MUNICIPAL MINOR 4952 2537102 0079162 10/31/2024 WILLIS AUTOMOTIVE, LLC – OASIS LASER WASH 3335 HIGHWAY 141 GRANGER IA 50109-- (515)999-2575 OPERATION MINOR 5511 9100601 0067903 12/31/2021 WILSHIRE MOBILE HOME PARK 9587 BUCHANAN TRAIL NORWALK IA 50211-- (515)289-2345 SEMI-PUBLIC MINOR 6515 7078001 0032921 11/30/2024 WILTON CITY OF STP SE CORNER OF E. JACKSON ST. AND S. LOCUST ST. WILTON IA 52778- (319)732-2115 MUNICIPAL MINOR 4952 2300602 0068497 1/31/2021 WINDING BROOK MOBILE HOME PARK STP 2210 260TH AVENUE DE WITT IA 52742- (563)249-6006 SEMI-PUBLIC MINOR 6515 7791001 0078921 1/31/2022 WINDSOR HEIGHTS, CITY OF MS4 1133 66TH ST. WINDSOR HEIGHTS IA 50311-- (515)279-3662 STORMWATER MINOR 4952 4493001 0033367 2/28/2022 WINFIELD CITY OF STP CORNER OF S OAK ST. AND 130TH ST., SE CORNER OF TOWN WINFIELD IA 52659- (319)257-6252 MUNICIPAL MINOR 4952 4100112 0067229 6/30/2025 WINNEBAGO INDUSTRIES, INC. 605 W. CRYSTAL LAKE ROAD FOREST CITY IA 50436- (641)585-6301 INDUSTRIAL MAJOR 3716 8456342 0081191 9/30/2022 Winterfeld Cattle Feedlot 3840 EAGLE AVE SIOUX CENTER IA 51250--7420 (712)722-2419 AGRICULTURAL MINOR 0211 6171001 0034291 12/31/2024 WINTERSET CITY OF STP 2255 Norwood Ave. WINTERSET IA 50273- (515)462-3764 MUNICIPAL MAJOR 4952 6100801 0072681 7/31/2024 WINTERSET EGG FARM - LAOP 1981 HIGHWAY 92 WINTERSET IA 50273-- (515)468-1011 OPERATION MINOR 0252 6171000 0079961 10/31/2023 WINTERSET WATER TREATMENT PLANT 3301 CEDAR BRIDGE ROAD WINTERSET IA 50273-- (515)462-3601 MUNICIPAL-WT MINOR 4941 1093001 0032808 5/31/2025 WINTHROP CITY OF STP 7TH STREET SOUTH WINTHROP IA 50682- (319)935-3317 MUNICIPAL MINOR 4952 8462847 0084301 9/30/2025 Witt Brothers Feedlot 4402 Chestnut HAWARDEN IA 51023-- (605)929-7039 AGRICULTURAL MINOR 0211 4170001 0084174 6/30/2023 WODEN CITY OF STP 1/2 MILE W OF ECHO AVE & 330TH ST INTERSECT WODEN IA 50484-- (641)512-8589 MUNICIPAL MINOR 4952 4388001 0032387 10/31/2023 WOODBINE CITY OF STP SOUTH OF THE RAILROAD TRACKS BY RAWLINS AVE WOODBINE IA 51579-- (712)647-2550 MUNICIPAL MINOR 4952 2052001 0075256 1/31/2023 WOODBURN CITY OF (SIRWA) IDAHO LANE 1 MILE SOUTHEAST OF WOODBURN WOODBURN IA 50275- (515)782-5744 MUNICIPAL MINOR 4952

18 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Facility Address Facility City Facility Facility Zip Facility Phone Permit Type Class. SIC State Code 5800601 0052740 7/31/2022 WOODLAND MOBILE HOME PARK 14565 100TH STREET WAPELLO IA 52653- (319)523-2251 SEMI-PUBLIC MINOR 6515 2576001 0057517 6/30/2025 WOODWARD CITY OF STP 108 FIRST STREET EAST WOODWARD IA 50276- (515)438-2560 MUNICIPAL MINOR 4952 0800901 0063916 6/30/2024 WOODWARD RESOURCE CENTER 1251 334th Avenue1/4 MILE N OF THE 334TH ST. & ASH AVE INTERSECTION WOODWARD IA 50276 (515)438-3287 SEMI-PUBLIC MINOR 8069 0800904 0083127 10/31/2021 WOODWARD RESOURCE CENTER WTP 1251 334th Avenue WOODWARD IA 50276-- (515)438-3675 MUNICIPAL-WT MINOR 4941 4071001 0061310 11/30/2021 WOOLSTOCK CITY OF STP 1 MILE SE OF FISHER AVE & 160TH ST INTERSECTION WOOLSTOCK IA 50599- (515)839-5540 MUNICIPAL MINOR 4952 3189001 0058548 5/31/2022 WORTHINGTON CITY OF STP WEST OF 4TH ST. AND 2ND AVE. SW WORTHINGTON IA 52078- (563)855-2825 MUNICIPAL MINOR 4952 6061304 0077640 2/29/2024 Wynia Cattle (formerJansma Cattle) 2960 160th Street ROCK RAPIDS IA 51246-- (712)472-3782 AGRICULTURAL MINOR 0211 5392001 0032646 10/31/2021 WYOMING, CITY OF STP 8516 HIGHWAY 136 WYOMING IA 52362--0076 (563)488-3970 MUNICIPAL SIGNIFICANT MINOR 4952 0300900 0065986 1/31/2016 YELLOW RIVER/LUSTER HEIGHTS CAMP 481 LUSTER HEIGHTS ROAD HARPERS FERRY IA 52146- (563)586-2115 SEMI-PUBLIC MINOR 7033 5700401 0070050 2/28/2023 YMCA CAMP WAPSIE STP 2174 WAPSIE Y ROAD COGGON IA 52218- (319)435-2577 SEMI-PUBLIC MINOR 7032 8590001 0058513 1/31/2023 ZEARING CITY OF STP 71495 140TH STREET ZEARING IA 50278-- (515)487-7477 MUNICIPAL MINOR 4952 3405103 0072150 2/28/2025 ZOETIS, LLC 1012-1/2 S GRAND AVE CHARLES CITY IA 50616--9101 (641)257-2422 INDUSTRIAL MINOR 2836 4998001 0074209 3/31/2023 ZWINGLE, CITY OF STP 80 WALNUT ST ZWINGLE IA 52079- (319)652-2135 MUNICIPAL MINOR 4952 7256367 0083984 8/31/2023 Zylstra Feedlot (AT) 5123 210th Street ASHTON IA 51232-- (712)261-2378 AGRICULTURAL MINOR 0211

19 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Owner Name Owner Address1 Owner Address2 Owner City Owner Owner Zip Owner Phone County State 3126122 0079146 2/28/2025 1840, LLC 1840, LLC 1000 MAIN ST DUBUQUE IA 52001 (563)557-8400 Dubuque 8466785 0084166 7/31/2023 360 Cattle Company, Inc. Jeff Van Voorst 3271 360th Street Sioux Center IA 51250 (712)441-3257 Sioux 1556245 0080519 8/31/2021 A to Z Feeders Alan Zellmer 56393 Highland Road Atlantic IA 50022 (712)249-5500 Cass 3126114 0063860 5/31/2022 A.Y. MCDONALD MFG. CO. A.Y. MCDONALD INDUSTRIES, INC. 4800 CHAVENELLE ROAD P.O. BOX 508 DUBUQUE IA 52002 (563)583-7311 Dubuque 6600110 0080896 10/31/2022 ABSOLUTE ENERGY ABSOLUTE ENERGY 1372 STATELINE ROAD ST. ANSGAR IA 50472- (641)326-2220 Mitchell 4201001 0035297 6/30/2025 ACKLEY CITY OF STP CITY OF ACKLEY CITY CLERK - CITY HALL 208 STATE ST ACKLEY IA 50601-1545 (641)847-3332 Hardin 0105001 0035416 2/9/2008 ADAIR CITY OF STP CITY OF ADAIR CITY CLERK, CITY HALL 320 AUDOBON STREET ADAIR IA 50002 (641)742-3751 Adair 3900501 0067156 9/30/2022 ADAIR-CASEY COMMUNITY SCHOOL DISTRICT ADAIR-CASEY COMMUNITY SCHOOL DISTRICT 3384 INDIGO AVE. ADAIR IA 50002 (515)742-3661 Guthrie 2503001 0041921 9/30/2019 ADEL CITY OF STP CITY OF ADEL PO BOX 248 ADEL IA 50003-0248 (515)993-4525 Dallas 2326120 0082279 3/31/2025 ADM BIOPROCESSING ADM BIOPROCESSING 410 18TH AVE. SOUTH CLINTON IA 52732 (563)241-4539 Clinton 2326119 0080543 7/31/2024 ADM CLINTON COGENERATION PLANT ARCHER DANIELS MIDLAND 4666 FARIES PARKWAY DECATUR IL 62526- Clinton 0790123 0078484 1/31/2024 ADVANCED HEAT TREAT CORPORATION ADVANCED HEAT TREAT CORPORATION 2825 MIDPORT BLVD WATERLOO IA 50703 (319)232-5221 Black Hawk 0790119 0075451 7/31/2024 ADVANCED HEAT TREAT CORPORATION - MIDPORT ADVANCED HEAT TREAT CORPORATION 2825 MIDPORT BLVD WATERLOO IA 50703 (319)232-5221 Black Hawk 8803001 0041831 9/30/2022 AFTON CITY OF STP CITY OF AFTON 115 E KANSAS STREET PO BOX 199 AFTON IA 50830- (641)344-0678 Union 8803002 0052182 7/31/2020 AFTON CITY PARK SPLASHPAD CITY OF AFTON 115 E. KANSAS STREET AFTON IA 50830 Union 4000111 0053034 2/28/2026 AG PARTNERS, LLC AG PARTNERS, LLC 3364 VAIL AVE ELLSWORTH IA 50075 Hamilton 1457102 0064262 2/28/2022 AG PROCESSING INC a COOPERATIVE AG PROCESSING INC a COOPERATIVE 12700 WEST DODGE ROAD P.O. BOX 2047 OMAHA NE 68154 Carroll 9926101 0059901 1/31/2017 AG PROCESSING INC. AG PROCESSING INC. 12700 W. DODGE RD P.O. BOX 2074 OMAHA NE 68103-2074 Wright 9926102 0074128 5/26/2010 AG PROCESSING INC. - ENERGY CENTER AG PROCESSING INC. PO BOX 85 EAGLE GROVE IA 50533 (515)448-4711 Wright 9700105 0058815 5/31/2022 AG PROCESSING INC. - SERGEANT BLUFF AG PROCESSING, INC. 12700 WEST DODGE ROAD P.O. BOX 2047 OMAHA NE 68154 Woodbury 7170100 0063771 3/30/2005 AG PROCESSING INC. - SHELDON AG PROCESSING INC. 12700 W. DODGE ROAD OMAHA NE 68154- (402)496-7809 O'Brien 5500113 0081116 7/31/2018 AG PROCESSING, INC. - ALGONA AG PROCESSING, INC. 12700 WEST DODGE ROAD P.O. BOX 2047 OMAHA NE 68103-2047 (402)498-5501 Kossuth 9003001 0057754 8/26/2006 AGENCY CITY OF STP CITY OF AGENCY CITY CLERK, CITY HALL P.O. BOX 218 AGENCY IA 52530-0218 (515)937-5215 Wapello 0375102 0077135 9/1/2021 AGRI STAR MEAT AND POULTRY LLC CITY OF POSTVILLE 415 OAK DRIVE P.O. BOX 242 POSTVILLE IA 52162-0242 (563)864-7454 Allamakee 8100100 0004006 6/30/2023 AGRIUM U.S. INC. AGRIUM U.S. INC. 4582 S. ULSTER ST., SUITE 1400 DENVER CO 80237 (303)804-4426 Sac 8400120 0081621 2/28/2022 AGROPUR INC. AGROPUR INC 3500 E DESTINATION DRIVE APPLETON WI 54915 (712)439-6780 Sioux 9203001 0069183 5/31/2022 AINSWORTH CITY OF STP CITY OF AINSWORTH CITY HALL, PO BOX 126 AINSWORTH IA 52201- (319)657-3761 Washington 9200201 0074080 9/20/2006 AINSWORTH FOUR CORNERS DIANE ANDING 2512 HIGHWAY 218 AINSWORTH IA 52201 (319)657-3399 Washington 6800113 0065692 4/30/2022 AJINOMOTO ANIMAL NUTRITION NORTH AMERICA, INC. AJINOMOTO ANIMAL NUTRITION NORTH AMERICA 1116 HWY 137 EDDYVILLE IA 52553 Monroe 6800114 0072389 4/30/2022 AJINOMOTO NORTH AMERICA, INC. AJINOMOTO NORTH AMERICA, INC. 400 KELBY STREET FORT LEE NJ 07024- (201)261-1789 Monroe 7509001 0035211 5/31/2022 AKRON CITY OF STP CITY OF AKRON CITY HALL, PO BOX 318 AKRON IA 51001-0318 (712)568-2041 Plymouth 1103001 0034312 3/31/2025 ALBERT CITY, CITY OF STP CITY OF ALBERT CITY CITY HALL, P.O. BOX 297 ALBERT CITY IA 50510 Buena Vista 8466409 0083224 3/31/2026 Albert Rens Feedlot Albert Rens 2661 480th Street Ireton IA 51027 (712)449-5434 Sioux 6803001 0036871 4/30/2026 ALBIA CITY OF STP (NORTH) CITY OF ALBIA 120 SOUTH A STREET ALBIA IA 52531 (515)932-2129 Monroe 6803003 0036889 4/30/2026 ALBIA CITY OF STP (WEST) CITY OF ALBIA 120 SOUTH A STREET ALBIA IA 52531-1998 (641)932-2129 Monroe 6403001 0034321 11/30/2024 ALBION CITY OF STP CITY OF ALBION CITY HALL, PO BOX 219 ALBION IA 50005-0219 (515)488-4813 Marshall 3100401 0075621 5/31/2025 ALBRECHT ACRES CAMPGROUND-STP CAMP ALBRECHT ACRES OF THE MIDWEST 14837 SHERRILL ROAD P.O. BOX 50 SHERRILL IA 52073-0050 (563)552-1771 Dubuque 5704001 0024431 1/31/2025 ALBURNETT CITY OF STP CITY OF ALBURNETT CITY HALL, P.O. BOX 326 ALBURNETT IA 52202-0326 (319)842-2692 Linn 4213001 0034339 2/28/2025 ALDEN CITY OF STP CITY OF ALDEN PO BOX 26 ALDEN IA 50006-0026 (515)859-3344 Hardin 5502001 0022055 6/30/2022 ALGONA CITY OF STP CITY OF ALGONA 112 W CALL ST PO BOX 452 ALGONA IA 50511 (515)295-2411 Kossuth 0300901 0065790 4/30/2026 ALLAMAKEE COUNTY PUBLIC SAFETY CENTER STP ALLAMAKEE COUNTY PUBLIC SAFETY CENTER 877 HIGHWAY 9 NORTH WAUKON IA 52172-7757 Allamakee 0790118 0072419 4/30/2024 ALLEN MEMORIAL HOSPITAL ALLEN MEMORIAL HOSPITAL CORPORATION 1825 LOGAN AVE WATERLOO IA 50703 (319)235-3987 Black Hawk 9303003 0054054 8/31/2026 ALLERTON CITY OF STP (NORTH) CITY OF ALLERTON CITY HALL, PO BOX 176 ALLERTON IA 50008-0176 (641)873-4623 Wayne 9303002 0054046 8/31/2026 ALLERTON CITY OF STP (SOUTH) CITY OF ALLERTON CITY HALL P.O. BOX 176 ALLERTON IA 50008-0176 (641)873-4459 Wayne 3126120 0077151 10/31/2024 ALLIANT ENERGY DATA CENTER Alliant Energy 200 First Street SE PO Box 351 Cedar Rapids IA 52406-0351 Dubuque 1203001 0042731 1/31/2025 ALLISON CITY OF STP CITY OF ALLISON CITY HALL, P.O. BOX 647 ALLISON IA 50602-0647 (319)267-2166 Butler 1108001 0024449 6/30/2025 ALTA CITY OF STP CITY OF ALTA CITY HALL, 223 MAIN ST. ALTA IA 51002-1395 (712)200-2105 Buena Vista 1903001 0030686 8/31/2024 ALTA VISTA CITY OF STP CITY OF ALTA VISTA CITY HALL, P.O. BOX 115 ALTA VISTA IA 50603-0115 (641)364-2975 Chickasaw 8403001 0028932 12/31/2023 ALTON CITY OF STP CITY OF ALTON 905 3RD AVE PO BOX 910 ALTON IA 51003-0910 (712)756-4314 Sioux 7707002 0078603 7/31/2024 ALTOONA, CITY OF MS4 ALTOONA, CITY OF 407 8TH ST. SE ALTOONA IA 50009 (515)967-5136 Polk 6003001 0059722 11/30/2019 ALVORD CITY OF STP CITY OF ALVORD P.O. BOX 115 ALVORD IA 51230 (712)473-2246 Lyon 4856996 0077500 9/30/2025 Amana Farms, Inc. Amana Society, Inc. 506 39th Avenue, P. O. Box 189 Amana IA 52203 (319)622-7500 Iowa 4802901 0059161 7/31/2021 AMANA SANITARY DISTRICT AMANA SANITARY DISTRICT PO BOX 186 AMANA IA 52203 (319)622-3052 Iowa 5640104 0033600 6/30/2021 AMEREN UE KEOKUK PLANT UNION ELECTRIC COMPANY DBA AMEREN MISSOURI 1901 CHOUTEAU AVENUE PO BOX 66149, MC-602 ST. LOUIS MO 63166-6149 (314)554-4581 Lee 4700109 0082121 12/29/2013 AMERICAN NATURAL PROCESSORS, INC. American Natural Processors, Inc. 1510 S. 2nd St., PO Box 399 Cherokee IA 51012 (712)225-1299 Ida 8503001 0035955 8/31/2015 AMES WATER POLLUTION CONTROL FACILITY CITY OF AMES 300 EAST FIFTH STREET AMES IA 50010 (515)239-5150 Story 8503003 0078204 3/31/2024 AMES, CITY OF MS4 AMES, CITY OF 515 CLARK AVE. AMES IA 50010 (515)239-5160 Story 9433112 0071366 8/31/2022 AML RIVERSIDE AML RIVERSIDE 141 EAST RIVERSIDE DRIVE FORT DODGE IA 50501 (515)302-2320 Webster 1300103 0073512 10/20/2024 AMPC, INC. dba ESSENTIA PROTEINS SOLUTIONS - LAOP THE LAURIDSEN GROUP 2425 SE OAK TREE COURT ANKENY IA 50021- Calhoun 8300100 0073920 7/10/2024 AMPC, INC. dba ESSENTIA PROTEINS SOLUTIONS - LAOP AMPC, Inc,d/b/a ESSENTIA PROTEINS - HARLAN 1347 HWY 44 PO Box 269 HARLAN IA 51537 (515)289-7600 Shelby 5307001 0025895 10/31/2025 ANAMOSA CITY OF STP CITY OF ANAMOSA 107 S. FORD STREET ANAMOSA IA 52205-1841 (319)462-6055 Jones 2307001 0021091 11/30/2023 ANDOVER CITY OF STP CITY OF ANDOVER CITY HALL PO BOX 108 ANDOVER IA 52701-0108 (563)682-7443 Clinton 4903001 0057975 8/31/2016 ANDREW CITY OF STP CITY OF ANDREW CITY HALL, P.O. BOX 14 ANDREW IA 52030-0014 (563)672-3570 Jackson 1503001 0024520 9/30/2021 ANITA CITY OF STP CITY OF ANITA CITY HALL PO BOX 246 ANITA IA 50020 (712)762-3746 Cass 7709000 0074489 2/28/2026 ANKENY AQUIFER STORAGE AND RECOVERY WELL CITY OF ANKENY 410 WEST FIRST STREET ANKENY IA 50023- (515)963-3520 Polk 7709008 0078611 8/31/2024 ANKENY, CITY OF MS4 CITY OF ANKENY 410 W. FIRST ST. ANKENY IA 50023 (515)965-6400 Polk 9704001 0042854 4/20/2014 ANTHON CITY OF STP CITY OF ANTHON 301 E MAIN ST P.O. BOX 160 ANTHON IA 51004-0160 (712)373-5218 Woodbury 7500114 0080942 1/31/2022 ANTHONY TRUCKING, INC. NEAL ANTHONY ANTHONY TRUCKING 21078 LAKE AVE. LEMARS IA 51031 (712)540-1050 Plymouth 1207001 0035050 12/31/2023 APLINGTON CITY OF STP CITY OF APLINGTON CITY HALL, P.O. BOX 308 APLINGTON IA 50604 (319)347-2947 Butler 1403001 0031208 12/31/2022 ARCADIA CITY OF STP CITY OF ARCADIA 205 W Front Street PO Box 41 ARCADIA IA 51430-0041 (712)689-2442 Carroll 7103001 0082422 11/30/2021 ARCHER CITY OF STP IOWA LAKES REGIONAL WATER 1301 38TH AVENUE WEST P.O. BOX 555 SPENCER IA 51301- (712)262-8847 O'Brien 7727135 0072958 5/31/2026 ARCHER DANIELS MIDLAND COMPANY ARCHER DANIELS MIDLAND COMPANY 4666 FARIES PARKWAY P.O. BOX 1470 DECATUR IL 62526- Polk 2326101 0003620 3/31/2021 ARCHER DANIELS MIDLAND CORN PROCESSING ARCHER DANIELS MIDLAND COMPANY 4666 FARIES PKWY DECATUR IL 62526 (217)451-2568 Clinton 8278100 0003395 9/30/2023 ARCONIC DAVENPORT LLC ARCONIC DAVENPORT LLC 4879 STATE ST. BETTENDORF IA 52722 (563)459-3208 Scott 3126115 0069540 12/31/2022 ARCTIC GLACIER PREMIUM ICE ARCTIC GLACIER U.S.A., INC. 1654 MARTHALER LANE WEST ST. PAUL MN 55118- (204)784-5873 Dubuque 8503105 0072061 4/30/2025 ARCTIC GLACIER U.S.A., INC. ARCTIC GLACIER U.S.A., INC. 1654 MARTHALER LN WEST ST PAUL MN 55118 (204)784-5873 Story 5603001 0082406 10/31/2020 ARGYLE, CITY OF STP REGIONAL UTILITY SERVICE SYSTEMS 901 N. 8TH STREET FAIRFIELD IA 52556-2106 (641)919-3012 Lee 8809001 0074462 4/30/2016 ARISPE, CITY OF STP SOUTHERN IOWA RURAL WATER ASSOCIATION 1391 190TH STREET CRESTON IA 50801-8233 (641)782-5744 Union 3307001 0027383 11/30/2023 ARLINGTON CITY OF STP CITY OF ARLINGTON CITY HALL, 730 MAIN ST ARLINGTON IA 50606 (563)633-2345 Fayette 3203001 0028517 5/31/2022 ARMSTRONG CITY OF STP CITY OF ARMSTRONG 519 6TH STREET P.O. BOX 229 ARMSTRONG IA 50514-0229 (712)864-3535 Emmet 7727012 0052975 4/30/2024 ARMY POST ROAD AQUIFER STORAGE & RECOVERY FACILITY DES MOINES WATER WORKS 2201 GEORGE FLAGG PARKWAY DES MOINES IA 50321-1190 Polk 6056506 0079502 12/31/2025 ARNEVA CATTLE, LLC Arneva Cattle LLC 1943 300th Street Rock Valley IA 51247 (712)476-2404 Lyon 3030102 0053081 2/24/2026 ARNOLDS PARK 2019 PROMENADE BEAUTIFICATION PROJECT HISTORIC ARNOLDS PARK, INC. 37 LAKE STREET, PO BOX 609 ARNOLDS PARK IA 51331 Dickinson 4703001 0025887 6/30/2025 ARTHUR CITY OF STP CITY OF ARTHUR CITY HALL P.O. BOX 102 ARTHUR IA 51431-0102 (712)367-2271 Ida 3102001 0069922 4/30/2025 ASBURY CITY OF STP CITY OF ASBURY 290 GRAND MEADOW DR., STE #1 ASBURY IA 52002-2589 (563)556-7106 Dubuque 3102002 0078905 1/31/2025 ASBURY, CITY OF MS4 ASBURY, CITY OF 5080 ASBURY RD. ASBURY IA 52002- (563)556-7106 Dubuque 7209001 0024457 3/31/2023 ASHTON CITY OF STP CITY OF ASHTON 2191 NETTLE AVE ASHTON IA 51232 (712)724-6520 Osceola 7165101 0081965 5/31/2023 ASSOCIATED MILK PRODUCERS, INC. - SANBORN ASSOCIATED MILK PRODUCERS, INC. 315 N. BROADWAY PO BOX 455 NEW ULM MN 56073- O'Brien 7165102 0053204 2/10/2025 ASSOCIATED MILK PRODUCERS, INC. LAOP ASSOCIATED MILK PRODUCERS, INC PO BOX 455 315 N BROADWAY NEW ULM MN 56073 O'Brien

20 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Owner Name Owner Address1 Owner Address2 Owner City Owner Owner Zip Owner Phone County State 7009001 0070998 4/18/2006 ATALISSA CITY OF STP CITY OF ATALISSA CITY CLERK - CITY HALL PO BOX 129 ATALISSA IA 52720-0129 (563)649-3384 Muscatine 0603001 0020796 1/31/2024 ATKINS CITY OF STP CITY OF ATKINS CITY HALL, 111 1ST STREET ATKINS IA 52206- (319)446-7870 Benton 1509001 0029025 10/31/2024 ATLANTIC CITY OF STP CITY OF ATLANTIC CITY HALL, 23 E. 4TH ST. ATLANTIC IA 50022 (712)243-4407 Cass 8104001 0057029 11/30/2021 AUBURN CITY OF STP CITY OF AUBURN CITY HALL, PO BOX 238 AUBURN IA 51433-0238 (712)688-2264 Sac 0505001 0035203 1/31/2020 AUDUBON CITY OF STP CITY OF AUDUBON CITY CLERK - CITY HALL 410 N PARK PLACE AUDUBON IA 50025 (712)563-3269 Audubon 3126501 0081809 2/29/2020 AUDUBON ELEMENTARY SCHOOL DUBUQUE COMMUNITY SCHOOL DISTRICT 2300 CHANEY ROAD DUBUQUE IA 52001- Dubuque 6258708 0080136 5/31/2022 Augustine & Sons, Inc. Dan Augustine Augustine & Sons, Inc. 3057 190th St. Rose Hill IA 52586 (641)295-3191 Mahaska 1803001 0028908 7/31/2026 AURELIA CITY OF STP CITY OF AURELIA 236 MAIN ST. PO BOX 328 AURELIA IA 51005 (712)434-2025 Cherokee 1003001 0059412 12/31/2022 AURORA CITY OF STP CITY OF AURORA CITY HALL P.O. BOX 117 AURORA IA 50607-0117 (319)634-3363 Buchanan 6061430 0084204 5/31/2024 AVACH HOLDINGS LLC AVACH HOLDINGS LLC 48015 273TH ST. HARRISBURG SD 57032 Lyon 0398100 0003751 11/30/2024 AVEKA NUTRA PROCESSING AVEKA, INC. 2045 WOODDALE DRIVE WOODBURY MN 55125 Allamakee 6809001 0074713 1/31/2025 AVERY, CITY OF STP-(RATHBUN RWA) RATHBUN REGIONAL WATER ASSOCIATION 16166 HWY. J29 CENTERVILLE IA 52544-8307 (641)647-2416 Monroe 7803001 0030708 5/31/2025 AVOCA CITY OF STP CITY OF AVOCA P.O. BOX 246 AVOCA IA 51521 (712)343-6372 Pottawattamie 5625101 0003514 8/31/2024 AXALTA COATING SYSTEMS, LLC - FORT MADISON PLANT AXALTA COATING SYSTEMS, LLC 803 35TH STREET FORT MADISON IA 52627-2011 (319)376-5312 Lee 7403001 0079677 7/31/2021 AYRSHIRE, CITY OF STP IOWA LAKES REGIONAL WATER 1301 38TH AVENUE WEST PO BOX 555 SPENCER IA 51301- (712)262-8847 Palo Alto 4760840 0079049 10/31/2024 B&D Dairy Brit Baxley 5211 130th Street Holstein IA 51025 (559)303-8752 Ida 9405001 0029041 9/30/2022 BADGER CITY OF STP CITY OF BADGER CITY HALL, P.O. BOX 253 BADGER IA 50516-0253 (515)545-4514 Webster 4907001 0063398 5/31/2026 BALDWIN-MONMOUTH WW TREATMENT AGENCY BALDWIN-MONMOUTH WW TREATMENT AGENCY P.O. BOX 43 BALDWIN IA 52207-0043 (563)673-3111 Jackson 3103001 0076911 9/30/2024 BALLTOWN, CITY OF-NORTH WWTF CITY OF BALLTOWN 455 BALLTOWN RD SHERRILL IA 52073 (563)552-1009 Dubuque 3103002 0076929 9/30/2024 BALLTOWN, CITY OF-SOUTH WWTF CITY OF BALLTOWN 455 BALLTOWN RD SHERRILL IA 52073 (563)552-1009 Dubuque 5507002 0057762 2/28/2025 BANCROFT CITY OF STP CITY OF BANCROFT P.O. BOX 157 BANCROFT IA 50517 (515)885-2382 Kossuth 3109001 0071731 9/20/2009 BANKSTON CITY OF STP CITY OF BANKSTON CITY HALL 24187 DYERSVILLE E. RD. EPWORTH IA 52045-9998 (563)744-3188 Dubuque 8456228 0077721 6/30/2022 Bar K Cattle LLC - K52 Kelly Hulstein Bar K Cattle LLC 1275 7th Avenue NE Sioux Center IA 51250 (712)441-1665 Sioux 8457946 0059188 9/30/2024 Bar K Cattle, LLC - Carmel Kelly Hulstein Bar K Cattle, LLC 1275 7th Ave. NE Sioux Center IA 51250 (712)441-1665 Sioux 8456567 0077518 1/31/2025 Bar K Cattle, LLC - Inwood KELLY HULSTEIN BAR K CATTLE, LLC 1275 7TH AVE. NE SIOUX CENTER IA 51250 (712)722-3332 Sioux 7905001 0081329 1/31/2024 BARNES CITY, CITY OF STP POWESHIEK WATER ASSOCIATION 125 INDUSTRIAL DRIVE PO BOX 504 BROOKLYN IA 52211- (641)522-7416 Poweshiek 9408001 0041246 1/31/2025 BARNUM CITY OF STP CITY OF BARNUM CITY HALL, P.O. BOX 167 BARNUM IA 50518-0167 (515)542-3290 Webster 4356275 0077526 3/31/2023 Barry Farms Lynn Barry 3596 111th Street Woodbine IA 51579-5015 (712)592-2523 Harrison 5107001 0061778 1/31/2021 BATAVIA CITY OF STP CITY OF BATAVIA 304 ALTO STREET PO BOX 20 BATAVIA IA 52533-0020 (641)662-2479 Jefferson 4709001 0027855 2/28/2026 BATTLE CREEK CITY OF STP CITY OF BATTLE CREEK CITY HALL 115 MAIN STREET BATTLE CREEK IA 51006-9998 (712)365-4646 Ida 5003001 0023353 1/31/2022 BAXTER CITY OF STP CITY OF BAXTER CITY HALL 203 S. MAIN ST., P.O. BOX 415 BAXTER IA 50028-0415 (641)227-3120 Jasper 3907001 0061468 10/31/2021 BAYARD CITY OF STP CITY OF BAYARD CITY CLERK, CITY HALL P.O. BOX 339 BAYARD IA 50029 (712)651-2484 Guthrie 7000102 0000205 6/30/2022 BAYER CROPSCIENCE LP BAYER CROPSCIENCE LP 2500 WIGGINS RD. MUSCATINE IA 52761 (563)263-0093 Muscatine 4800105 0052268 4/30/2025 BAYER PRODUCTION SUPPLY LLC BAYER PRODUCTION SUPPLY LLC 503 S MAPLEWOOD AVE. WILLIAMSBURG IA 52361 (319)668-1100 Iowa 6203001 0035424 3/31/2024 BEACON CITY OF STP CITY OF BEACON CITY HALL PO BOX 127 BEACON IA 52534 Mahaska 3803001 0058734 6/30/2016 BEAMAN CITY OF STP CITY OF BEAMAN PO BOX 125 BEAMAN IA 50609-0125 (641)366-2894 Grundy 8709001 0026018 12/31/2021 BEDFORD CITY OF STP CITY OF BEDFORD CITY HALL 625 COURT BEDFORD IA 50833-1302 (712)523-2210 Taylor 6057418 0080497 11/30/2022 Beef & Bacon Drive, Inc. Glenn VandeVegte 2277 Coolidge Ave. INWOOD IA 51240 (605)366-1728 Lyon 7556281 0080411 6/30/2022 Beitelspacher Land and Cattle, LLC (Formerly Beitelspacher Bros.) Wayne & Luke Beitelspacher Beitelspacher Land and Cattle, LLC 11874 Juniper Ave. Le Mars IA 51031 (712)540-5259 Plymouth 8465835 0081761 5/31/2024 Bell Lake Cattle Company Paul Kooiker Bell Lake Cattle Co. 3560 370th Street Orange City IA 51041 (712)722-3917 Sioux 0610001 0065404 12/31/2024 BELLE PLAINE CITY OF STP CITY OF BELLE PLAINE CITY HALL, 1207 8TH AVE BELLE PLAINE IA 52208-1755 (319)444-2200 Benton 4910001 0029009 5/31/2023 BELLEVUE CITY OF STP CITY OF BELLEVUE 106 N THIRD ST BELLEVUE IA 52031-1235 (319)872-4456 Jackson 9905001 0041777 9/30/2021 BELMOND CITY OF STP CITY OF BELMOND 112 2ND AVENUE NE BELMOND IA 50421 (641)444-3386 Wright 5400401 0077224 2/17/2008 BELVA DEER PARK KEOKUK CONSERVATION BOARD P.O.BOX 323 SIGOURNEY IA 52591 (641)622-3757 Keokuk 2300111 0081345 4/21/2013 BENEFICIAL TECHNOLOGIES, LLC BENEFICIAL TECHNOLOGIES, LLC 2647 225TH STREET P.O. BOX 230 DEWITT IA 52742- (563)659-9181 Clinton 1603001 0021971 7/31/2025 BENNETT CITY OF STP CITY OF BENNETT 201 Main Street PO BOX M BENNETT IA 52721 (563)890-2361 Cedar 3113001 0076856 5/31/2024 BERNARD, CITY OF-STP CITY OF BERNARD CITY HALL, P.O. BOX 66 BERNARD IA 52032-0066 (563)879-3300 Dubuque 4000702 0076864 1/31/2023 BEST WESTERN NORSEMAN INN PAMOL, INC. 3086 220TH ST. WILLIAMS IA 50271 (515)854-2281 Hamilton 2863481 0079219 12/31/2025 Beswick Farms Robert E Beswick 2176 150th Street Greeley IA 52050 (563)880-4278 Delaware 8209000 0078191 1/31/2024 BETTENDORF, CITY OF MS4 CITY OF BETTENDORF CITY OF BETTENDORF 4403 DEVILS GLEN ROAD BETTENDORF IA 52722-4937 (563)344-4055 Scott 9110001 0081418 5/31/2026 BEVINGTON CITY OF STP WARREN WATER DISTRICT 1204 EAST 2ND AVENUE INDIANOLA IA 50125- (515)962-1200 Warren 5200403 0069094 10/31/2022 BEYONDER GETAWAY AT SLEEPY HOLLOW BEYONDER GETAWAY AT SLEEPY HOLLOW, LLC 3340 BLACK HAWK AVE. NW OXFORD IA 52322 (720)771-9011 Johnson 2900112 0078123 1/31/2025 BIG RIVER RESOURCES WEST BURLINGTON, LLC BIG RIVER RESOURCES, LLC 211 N GEAR AVE, STE 200 WEST BURLINGTON IA 52655 (319)768-5873 Des Moines 2800906 0081302 10/31/2025 BIG RIVER UNITED ENERGY, LLC BIG RIVER RESOURCES, LLC 211 N. GEAR AVENUE WEST BURLINGTON IA 52655 Delaware 1100109 0081256 8/31/2023 BINDER LIVESTOCK TRAILER WASHOUT - LAOP ZAC BINDER 4971 HIGHWAY 71 REMBRANDT IA 50576 (712)260-0693 Buena Vista 8909001 0023426 7/27/2002 BIRMINGHAM CITY OF STP CITY OF BIRMINGHAM 511 E. CEDAR P.O. BOX 100 BIRMINGHAM IA 52535-0100 (319)498-4296 Van Buren 8600102 0078158 10/31/2023 BITUMINOUS MATERIALS & SUPPLY BITUMINOUS MATERIALS AND SUPPLY 5400 WEST 86TH STREET P.O.BOX 68123 INDIANAPOLIS IN 46268 (317)875-4670 Tama 7727134 0073172 1/31/2023 BITUMINOUS MATERIALS AND SUPPLY, LP BITUMINOUS MATERIALS 5400 W. 86TH ST. PO BOX 68123 INDIANAPOLIS IN 46268- (319)872-6010 Polk 4003001 0034347 4/30/2025 BLAIRSBURG CITY OF STP CITY OF BLAIRSBURG CITY HALL PO BOX 100 BLAIRSBURG IA 50034-0100 (515)325-6224 Hamilton 0607001 0030660 11/30/2021 BLAIRSTOWN CITY OF STP CITY OF BLAIRSTOWN P.O. Box 270 309 Locust St. BLAIRSTOWN IA 52209 (319)454-6931 Benton 6827001 0028215 9/30/2019 BLAKESBURG CITY OF STP CITY OF BLAKESBURG CITY HALL, P.O. BOX 215 BLAKESBURG IA 52536 (641)938-2413 Monroe 6709001 0042889 12/31/2016 BLENCOE CITY OF STP CITY OF BLENCOE CITY HALL, P.O. BOX 56 BLENCOE IA 51523-0056 (712)433-2005 Monona 8714001 0076023 2/28/2015 BLOCKTON CITY OF (SOUTHERN IA RURAL WATER ASSN.) SOUTHERN IOWA RURAL WATER ASSOCIATION 1391 190TH STREET CRESTON IA 50801 (515)782-5744 Taylor 2613001 0047929 7/31/2021 BLOOMFIELD CITY OF STP (MAIN) CITY OF BLOOMFIELD CITY CLERK, CITY HALL 111 W. FRANKLIN BLOOMFIELD IA 52537 (641)664-2260 Davis 8215001 0028975 8/31/2020 BLUE GRASS CITY OF STP CITY OF BLUE GRASS CITY HALL, 114 NORTH MISSISSIPPI STREET BLUE GRASS IA 52726 (563)381-4700 Scott 2985103 0077046 1/31/2018 BNSF RAILWAY COMPANY BNSF RAILWAY CO. 4515 KANSAS AVENUE KANSAS CITY KS 66106- Des Moines 4609001 0047805 4/30/2024 BODE CITY OF STP CITY OF BODE 105 Humboldt Ave P.O. Box 147 BODE IA 50519 (515)379-1486 Humboldt 8463263 0079332 3/31/2026 Boerdery Inc. Robert Wassenar Boerdery, Inc. PO Box 195 Orange City IA 51041 Sioux 8914001 0050628 7/31/2022 BONAPARTE CITY OF STP CITY OF BONAPARTE P.O. BOX 154 BONAPARTE IA 52620-0156 (319)592-3400 Van Buren 7717002 0078786 9/30/2024 BONDURANT, CITY OF MS4 CITY OF BONDURANT 200 2ND ST. NE PO BOX 37 BONDURANT IA 50035-0037 (515)967-2418 Polk 0819001 0058076 7/31/2024 BOONE CITY OF STP CITY OF BOONE CITY HALL P.O.BOX 550 BOONE IA 50036 (515)432-4211 Boone 0819000 0079421 2/28/2025 Boone, City of WTP City of Boone 923 8th Street PO Box 550 Boone IA 50036-0550 (515)433-0536 Boone 0825001 0058491 7/31/2017 BOXHOLM CITY OF STP CITY OF BOXHOLM 106 ELM STREET P.O. BOX 184 BOXHOLM IA 50040-0184 (515)846-6414 Boone 8409001 0042838 1/31/2025 BOYDEN CITY OF STP CITY OF BOYDEN P.O. BOX 160 BOYDEN IA 51234 (712)725-2371 Sioux 2424101 0072915 12/31/2024 BOYER VALLEY COMPANY - LAOP THE LAURIDSEN GROUP 2425 SE. Oak Tree Court Ankeny IA 50021-7102 (515)289-7600 Crawford 3100100 0001210 9/30/2023 BP PRODUCTS DUBUQUE TERMINAL BP CENTRAL PIPELINES, LLC 30 SOUTH WACKER DRIVE CHICAGO IL 60606 (216)390-0314 Dubuque 8464000 0083119 2/28/2026 Brad Pollema Feedlot Brad Pollema 2224 290th Street ROCK VALLEY IA 51247 (712)470-2100 Sioux 7324001 0057151 6/30/2025 BRADDYVILLE CITY OF STP CITY OF BRADDYVILLE CITY HALL, PO BOX 65 BRADDYVILLE IA 51631 (712)589-3534 Page 1011001 0028185 6/30/2019 BRANDON, CITY OF STP CITY OF BRANDON CITY HALL PO BOX 263 BRANDON IA 52210-0263 (319)474-2335 Buchanan 4166181 0082465 9/30/2024 Branstad Farms Monroe Branstad BRANSTAD FARMS 3018 HWY 69 FOREST CITY IA 50436 (641)590-2710 Hancock 0510001 0057100 7/31/2026 BRAYTON CITY OF STP CITY OF BRAYTON PO BOX 104 BRAYTON IA 50042-0104 (712)549-2268 Audubon 1409002 0056103 6/30/2023 BREDA CITY OF STP CITY OF BREDA 108 NORTH 2ND STREET P.O. Box 129 BREDA IA 51436 (712)673-2660 Carroll 7158774 0083941 7/31/2025 Brent Rieck Feedlot Brent Rieck 3141 Van Buren Ave. HARTLEY IA 51346 (712)363-3211 O'Brien 7758687 0038911 1/31/2023 Brenton Brothers, Inc Brenton Brothers Inc. 1415 Walnut, P.O. Box 190 Dallas Center IA 50063 (515)238-2118 Polk 9756538 0080187 1/31/2022 Brian Baldwin Feedlot Brian Baldwin 7 Tower Street Mapleton IA 51034 (712)373-5004 Woodbury 8459250 0082813 5/31/2025 Brian Roorda Dairy, LLC Brian Roorda 3267 460th Street MAURICE IA 51036 (712)541-8601 Sioux 1456263 0080284 4/30/2022 Brian Soyer Feedlot Brian Soyer 23301 160th St. Carroll IA 51401 (712)830-6650 Carroll 9778501 0052953 6/30/2023 BRIAR CLIFF UNIVERSITY BRIAR CLIFF UNIVERSITY 3303 REBECCA STREET SIOUX CITY IA 51104 (712)279-5435 Woodbury 0115001 0062006 5/31/2025 BRIDGEWATER CITY OF (SIRWA) SOUTHERN IOWA RURAL WATER ASSOCIATION 1391 190TH STREET CRESTON IA 50801- (641)782-5744 Adair

21 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Owner Name Owner Address1 Owner Address2 Owner City Owner Owner Zip Owner Phone County State 9209001 0047911 7/31/2024 BRIGHTON CITY OF STP CITY OF BRIGHTON 100 E WASHINGTON PO BOX 336 BRIGHTON IA 52540-0336 (319)694-2695 Washington 4103001 0023582 8/31/2026 BRITT CITY OF STP CITY OF BRITT CITY HALL 170 MAIN AVENUE S BRITT IA 50423-0303 (641)843-4433 Hancock 9709001 0071510 2/28/2023 BRONSON CITY OF STP CITY OF BRONSON PO BOX 142 Bronson IA 51007 (712)948-3354 Woodbury 7909001 0020958 8/31/2023 BROOKLYN CITY OF STP CITY OF BROOKLYN PO BOX 145 138 JACKSON ST BROOKLYN IA 52211-0145 (641)522-7066 Poweshiek 7256597 0079481 3/31/2026 Bruce A. Lorch, Inc Bruce Lorch 2151 White Ave. Ocheyedan IA 51354 (712)260-4555 Osceola 8457054 0052492 8/31/2026 Bruce Van Kekerix Feedlot Bruce Van Kekerix 1672 300th Street ROCK VALLEY IA 51247 (712)476-9295 Sioux 6400113 0081434 10/31/2021 BRUIN MANUFACTURING CO., INC. BRUIN MANUFACTURING CO., INC. 607 NORTH 4TH AVENUE P.O. BOX 578 MARSHALLTOWN IA 50158- (641)752-7116 Marshall 7514001 0058564 4/30/2018 BRUNSVILLE CITY OF STP CITY OF BRUNSVILLE 520 OAK STREET BRUNSVILLE IA 51008- (712)533-6303 Plymouth 5600606 0057525 6/30/2017 BRYANT'S MHP (now L & R Estates LLC) Larry Mack 671 West Thompson St. Kahoka MO 63445 (660)342-1123 Lee 8209100 0001198 3/31/2025 BUCKEYE TERMINALS, LLC - BETTENDORF TERMINAL BUCKEYE TERMINALS, LLC 5 TEK PARK 9999 HAMILTON BLVD BREINIGSVILLE PA 18031 (610)904-4225 Scott 5200109 0072273 6/30/2018 BUCKEYE TERMINALS, LLC - CEDAR RAPIDS TERMINAL BUCKEYE TERMINALS, LLC 5 TEK PARK 9999 HAMILTON BLVD BREINIGSVILLE PA 18031 (219)397-3656 Johnson 7820112 0071234 6/30/2024 BUCKEYE TERMINALS, LLC - COUNCIL BLUFFS TERMINAL BUCKEYE TERMINALS, LLC 5 TEK PARK 9999 HAMILTON BLVD BREINIGSVILLE PA 18031 (610)904-4225 Pottawattamie 7720100 0001228 5/31/2025 BUCKEYE TERMINALS, LLC - DES MOINES TERMINAL BUCKEYE TERMINALS, LLC 9999 HAMILTON BLVD TEK Park 5 BREINIGSVILLE PA 18031 (610)904-4000 Polk 9000103 0072281 11/30/2017 BUCKEYE TERMINALS, LLC - OTTUMWA TERMINAL BUCKEYE TERMINALS, LLC 5 TEK PARK 9999 HAMILTON BLVD BREINIGSVILLE PA 18031 (219)397-3656 Wapello 9506001 0047821 5/31/2016 BUFFALO CENTER CITY OF STP CITY OF BUFFALO CENTER CITY HALL, P.O. BOX 430 BUFFALO CENTER IA 50424-0430 (641)562-2505 Winnebago 8218002 0078760 8/31/2024 BUFFALO, CITY OF MS4 BUFFALO, CITY OF 409 3RD ST. BUFFALO IA 52728- (563)377-1581 Scott 8218001 0020800 4/30/2023 BUFFALO, CITY OF STP CITY OF BUFFALO P.O. BOX 557 BUFFALO IA 52728-0557 (563)381-2226 Scott 7556471 0080217 8/31/2022 Bull Creek Feedlot Rick Hansen, Ron Kneip; Wayne Kolbeck (Co-owners) Bull Creek Feedlot, LLC 17638 Fir Ave. Akron IA 51001 (712)568-3617 Plymouth 2909001 0043079 5/31/2021 BURLINGTON CITY OF STP CITY OF BURLINGTON CITY HALL 400 WASHINGTON STREET BURLINGTON IA 52601 (319)753-8124 Des Moines 2909000 0084271 10/31/2025 BURLINGTON MUNICIPAL WATERWORKS Burlington Municipal Water Works 500 North Third Street P.O. Box 786 Burlington IA 52601 (319)754-6501 Des Moines 9600301 0072265 9/30/2024 BURR OAK SEWER COMMISSION-STP BURR OAK SEWER COMMISION 3625 - 236TH AVE. BURR OAK IA 52101 (563)735-5815 Winneshiek 5510001 0027405 10/31/2023 BURT CITY OF STP CITY OF BURT PO BOX 197 BURT IA 50522-0197 (515)924-3618 Kossuth 6309001 0072991 7/31/2025 BUSSEY CITY OF STP CITY OF BUSSEY PO BOX 190 BUSSEY IA 50044-0190 (641)944-5532 Marion 6056865 0081370 9/30/2023 C & C Feedlot Craig Faber C & C Feedlot 2683 Dipper Ave. ROCK VALLEY IA 51247 (712)470-2835 Lyon 2320001 0028622 12/31/2022 CALAMUS CITY OF STP CITY OF CALAMUS 198 2ND STREET, PO BOX 248 CALAMUS IA 52729-0248 (563)246-2755 Clinton 9417001 0057096 1/31/2022 CALLENDER CITY OF STP CITY OF CALLENDER CITY HALL, PO BOX 165 CALLENDER IA 50523-0165 (515)548-3859 Webster 8200607 0063339 4/30/2025 CALLISON MOBILE HOME PARK CARL CALLISON CALLISON MOBILE HOME PARK 10989 NEW LIBERTY ROAD WALLCOTT IA 52773 (563)285-7698 Scott 9615001 0023515 4/30/2025 CALMAR CITY OF STP CITY OF CALMAR P.O. BOX 268 CALMAR IA 52132-0268 (319)562-3154 Winneshiek 7109001 0062049 9/30/2016 CALUMET CITY OF STP CITY OF CALUMET CITY HALL PO BOX 131 CALUMET IA 51009-0131 (712)446-2490 O'Brien 3405100 0003557 10/31/2021 CAMBREX CHARLES CITY, INC. CAMBREX CHARLES CITY, INC. 1205 11TH STREET CHARLES CITY IA 50616-3466 (641)257-1051 Floyd 8509001 0022101 4/30/2019 CAMBRIDGE CITY OF STP CITY OF CAMBRIDGE CITY HALL, P.O. BOX 216 CAMBRIDGE IA 50046-0216 (515)220-4541 Story 5100105 0079707 2/28/2025 CAMBRIDGE INVESTMENT RESEARCH INC. CAMBRIDGE INVESTMENT RESEARCH INC. 1776 PLEASANT PLAIN ROAD FAIRFEILD IA 52556- (641)472-5100 Jefferson 8200402 0067059 1/31/2022 CAMP ABE LINCOLN CAMP ABE LINCOLN 606 WEST 2ND STREET DAVENPORT IA 52801 (563)381-3053 Scott 5300802 0071820 2/29/2024 CAMP COURAGEOUS OF IOWA CAMP COURAGEOUS OF IOWA PO BOX 418 MONTICELLO IA 52310 (319)465-5916 Jones 7700901 0063215 7/31/2024 CAMP DODGE IOWA ARMY NATIONAL GUARD BLDG. #B61-CAMP DODGE 7105 NW 70TH AVENUE JOHNSTON IA 50131-1824 (515)242-4557 Polk 2200401 0079839 2/29/2024 CAMP EWALU CAMP EWALU 37776 ALPHA AVE STRAWBERRY POINT IA 52076 (563)933-4700 Clayton 0800403 0073806 7/31/2022 CAMP HANTESA STP (CAMP FIRE) CAMP HANTESA 1450 ORIOLE ROAD BOONE IA 50036 (515)432-1417 Boone 8920001 0056685 11/30/2015 CANTRIL CITY OF STP CITY OF CANTRIL PO BOX 237 CANTRIL IA 52542-0237 (319)397-2295 Van Buren 9000501 0064700 10/31/2024 CARDINAL SCHOOL STP CARDINAL COMMUNITY SCHOOL 4045 ASHLAND ROAD ELDON IA 52554 (641)652-7531 Wapello 6200106 0071170 5/31/2022 CARGILL INC. EDDYVILLE LEACHATE TREATMENT PLANT CARGILL INCORPORATED 1 CARGILL DRIVE EDDYVILLE IA 52503 (515)969-3728 Mahaska 5715100 0000647 9/30/2025 CARGILL INCORPORATED CARGILL INCORPORATED 15407 MCBINTY ROAD WEST WAYZATA MN 55391-2399 Linn 6800100 0063762 11/30/2022 CARGILL, INC. CARGILL, INC. 17540 MONROE WAPELLO RD EDDYVILLE IA 52553 (641)969-4511 Monroe 9113001 0024554 3/31/2024 CARLISLE CITY OF STP CITY OF CARLISLE CITY HALL, 195 N 1ST STREET P.O. BOX 430 CARLISLE IA 50047-0430 (515)989-3224 Warren 5700601 0065609 2/28/2026 CARLTON MOBILE HOME COURT DONALD E. NEAL CARLTON MOBILE HOME COURT 1106 DUBUQUE RD. SPRINGVILLE IA 52336 (319)854-7013 Linn 6616001 0081566 1/31/2024 CARPENTER CITY OF STP MITCHELL COUNTY MITCHELL CO. COURTHOUSE 212 SOUTH 5TH STREET OSAGE IA 50461-1908 (641)832-3946 Mitchell 1415001 0021377 10/31/2021 CARROLL, CITY OF STP CITY OF CARROLL CITY HALL 112 E 5TH STREET CARROLL IA 51401-2799 (712)792-1000 Carroll 7809001 0042901 2/28/2022 CARSON CITY OF STP CITY OF CARSON CITY HALL, 316 SOUTH COMMERCIAL STREET P.O. BOX 128 CARSON IA 51525-0128 (712)484-3636 Pottawattamie 7812000 0078891 6/30/2026 CARTER LAKE, CITY OF MS4 CITY OF CARTER LAKE 950 LOCUST ST. CARTER LAKE IA 51510- (712)347-6320 Pottawattamie 5318001 0027740 1/31/2023 CASCADE CITY OF STP CITY OF CASCADE PO BOX 400 CASCADE IA 52033 (563)852-3114 Jones 3914001 0027197 3/8/2006 Casey, City of STP City of Casey 502 Antique Drive PO Box 196 Casey IA 50048-0196 (641)746-3315 Guthrie 9620001 0076236 2/28/2015 CASTALIA CITY OF STP CITY OF CASTALIA PO BOX 127 CASTALIA IA 52133 (563)532-9764 Winneshiek 0709001 0036633 7/31/2024 CEDAR FALLS CITY OF STP CITY OF CEDAR FALLS 220 CLAY STREET CEDAR FALLS IA 50613-2783 (319)273-8600 Black Hawk 0709600 0064033 1/31/2026 CEDAR FALLS MOBILE HOME VILLAGE PAUL SIRES CEDAR FALLS M H VILLAGE 3825 WEST 27TH STREET CEDAR FALLS IA 50613 Black Hawk 0709102 0002534 8/31/2017 CEDAR FALLS UTILITIES CITY OF CEDAR FALLS UTILITY PARKWAY P.O.BOX 769 CEDAR FALLS IA 50613 (319)268-5309 Black Hawk 0709003 0078263 4/30/2024 CEDAR FALLS, CITY OF MS4 CITY OF CEDAR FALLS 220 CLAY ST. CEDAR FALLS IA 50613 (319)273-8606 Black Hawk 5715001 0042641 5/31/2022 CEDAR RAPIDS CITY OF STP CITY OF CEDAR RAPIDS 101 FIRST STREET SE CEDAR RAPIDS IA 52401 (319)286-1256 Linn 5715146 0052651 5/31/2022 CEDAR RAPIDS COUNTRY CLUB CEDAR RAPIDS COUNTRY CLUB 550 27TH STREET DR. SE CEDAR RAPIDS IA 52403 (319)200-7109 Linn 5715141 0077381 8/31/2023 CEDAR RAPIDS FRANKLIN MIDDLE SCHOOL CEDAR RAPIDS COMMUNITY SCHOOL DISTRICT 2500 EDGEWOOD RD NW CEDAR RAPIDS IA 52405 (319)558-3781 Linn 5715142 0077968 8/31/2024 CEDAR RAPIDS MCKINLEY MIDDLE SCHOOL CEDAR RAPIDS COMMUNITY SCHOOL DISTRICT 2500 EDGEWOOD RD NW CEDAR RAPIDS IA 52405 (319)558-3781 Linn 5715143 0078344 3/31/2024 CEDAR RAPIDS WILSON MIDDLE SCHOOL CEDAR RAPIDS COMMUNITY SCHOOL DISTRICT 2500 EDGEWOOD RD NW CEDAR RAPIDS IA 52405 Linn 5715005 0075566 1/31/2026 CEDAR RAPIDS, CITY OF MS4 CITY OF CEDAR RAPIDS 1201 6TH. STREET S.W. CEDAR RAPIDS IA 52404-5847 (319)398-5026 Linn 0700201 0082481 12/31/2024 CEDAR VALLEY SUITES AJ SPIEGEL 8650 ENTERPRISE DRIVE PEOSTA IA 52068 Black Hawk 8400124 0053315 4/30/2026 CENTER FRESH EGG FARM - DOMESTIC WASTEWATER J.T. DEAN 241 ST. ANDREWS WAY SIOUX CENTER IA 51250 (712)722-0132 Sioux 8400117 0080641 7/31/2023 CENTER FRESH EGG FARM - LAOP CENTER FRESH EGG FARM 4135 GARFIELD AVE SIOUX CENTER IA 51250 (712)722-0132 Sioux 5315001 0080357 12/31/2024 CENTER JUNCTION, CITY OF STP EASTERN IOWA REGIONAL UTILITY SERVICE SYSTEMS 7600 COMMERCE PARK DUBUQUE IA 52002 (563)556-4166 Jones 5718001 0021067 7/31/2022 CENTER POINT CITY OF STP (NORTH) CITY OF CENTER POINT PO BOX 299 CENTER POINT IA 52213 (319)849-1508 Linn 5718002 0074420 7/31/2022 CENTER POINT, CITY OF STP (SOUTH) CITY OF CENTER POINT PO BOX 299 CENTER POINT IA 52213 (319)849-1508 Linn 8900901 0076741 8/31/2026 CENTER VILLAGE CARE FACILITY-STP VAN BUREN COUNTY BOARD OF SUPERVISORS VAN BUREN COUNTY COURTHOUSE PO BOX 475 KEOSAUQUA IA 52565 (319)293-3129 Van Buren 0407003 0027472 11/30/2023 CENTERVILLE CITY OF STP (EAST) CITY OF CENTERVILLE CITY HALL, 312 E MAPLE ST CENTERVILLE IA 52544 (641)437-4339 Appanoose 0407004 0027464 11/30/2023 CENTERVILLE CITY OF STP (WEST) CITY OF CENTERVILLE CITY HALL, 312 E MAPLE ST CENTERVILLE IA 52544-0578 (641)437-4339 Appanoose 9778121 0030881 12/31/2023 CENTRAL BANK CENTRAL BANK 522 4TH STREET P.O. BOX 776 SIOUX CITY IA 51102 Woodbury 5720001 0027979 3/31/2022 CENTRAL CITY CITY OF STP CITY OF CENTRAL CITY 137 4TH STREET N CENTRAL CITY IA 52214-9596 (319)438-1713 Linn 5600501 0069426 6/30/2025 CENTRAL LEE COMMUNITY SCHOOLS CENTRAL LEE COMMUNITY SCHOOLS 2642 HWY 218 DONNELLSON IA 52625 (319)835-9510 Lee 3000800 0083879 5/31/2025 CENTRAL WATER SYSTEM CENTRAL WATER SYSTEM PO BOX 764 OKOBOJI IA 51355 (712)332-5000 Dickinson 9900123 0082783 9/30/2025 CENTRUM VALLEY FARMS, LLP - LAOP STEVE BOOMSMA 2674 HIGHWAY 69 GALT IA 50101 Wright 9700104 0004014 8/31/2020 CF INDUSTRIES NITROGEN, LLC - PORT NEAL NITROGEN COMPLEX CF INDUSTRIES NITROGEN, LLC 4 PARKWAY NORTH SUITE 400 DEERFIELD IL 60015 Woodbury 9000105 0077062 9/30/2021 CHAMNESS TECHNOLOGY, INC.-LAND APPLICATION CHAMNESS TECHNOLOGY, INC. 2255 LITTLE WALL LAKE ROAD BLAIRSBURG IA 50034 (515)325-6133 Wapello 5903001 0028924 3/31/2023 CHARITON CITY OF STP CITY OF CHARITON CITY HALL 115 SOUTH MAIN STREET CHARITON IA 50049-1842 (641)774-5991 Lucas 3405000 0003182 3/31/2024 CHARLES CITY WATER TREATMENT PLANT CITY OF CHARLES CITY 105 MILWAUKEE MALL CHARLES CITY IA 50616- (641)257-6300 Floyd 3405001 0022039 5/31/2026 CHARLES CITY, CITY OF STP CITY OF CHARLES CITY 105 MILWAUKEE MALL CHARLES CITY IA 50616-2280 (515)257-6309 Floyd 2324001 0062341 1/31/2025 CHARLOTTE CITY OF STP CITY OF CHARLOTTE P.O. BOX 128 CHARLOTTE IA 52731 (563)677-2710 Clinton 2417001 0022268 2/29/2024 CHARTER OAK CITY OF STP CITY OF CHARTER OAK CITY HALL, PO BOX 74 CHARTER OAK IA 51439 (712)678-3580 Crawford 8609001 0071552 1/31/2026 CHELSEA CITY OF STP CITY OF CHELSEA CITY CLERK, CITY HALL 600 Station Street, P.O. BOX 125 CHELSEA IA 52215-0125 (515)489-2525 Tama 1811002 0059005 1/31/2026 CHEROKEE CITY OF STP CITY OF CHEROKEE 416 W. MAIN ST. CHEROKEE IA 51012-1735 (712)225-5749 Cherokee 1800900 0082791 12/31/2023 CHEROKEE RURAL WATER DISTRICT #1 - CHEROKEE SUBSYSTEM CHEROKEE RURAL WATER DISTRICT NO. 1 1593 580TH STREET CHEROKEE IA 51012 (712)225-6193 Cherokee 4509001 0020931 6/30/2023 CHESTER CITY OF STP CITY OF CHESTER PO BOX 86 CHESTER IA 52134-0086 (563)565-2768 Howard 9032001 0071081 1/31/2016 CHILLICOTHE,CITY OF-(WAPELLO RURAL WATER ASSN). WAPELLO RURAL WATER ASSOCIATION P.O.BOX 538 OTTUMWA IA 52501-0538 (515)682-8351 Wapello 5000400 0068365 1/31/2019 CHRISTIAN CONFERENCE CENTER CHRISTIAN CHURCH IN THE UPPER MIDWEST 5064 LINCOLN ST. NEWTON IA 50208- (641)792-1266 Jasper 3709001 0031216 1/31/2024 CHURDAN CITY OF STP CITY OF CHURDAN P.O. BOX 188 CHURDAN IA 50050-0188 (515)389-3334 Greene

22 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Owner Name Owner Address1 Owner Address2 Owner City Owner Owner Zip Owner Phone County State 0410001 0070734 10/31/2023 CINCINNATI CITY OF STP CITY OF CINCINNATI 105 WEST PLEASANT PO BOX 194 CINCINNATI IA 52549-0194 (641)658-2666 Appanoose 8800105 0081442 8/31/2020 CIPCO - SUMMIT LAKE CENTRAL IOWA POWER COOPERATIVE 1400 HIGHWAY 13 SE P.O. BOX 2517 CEDAR RAPIDS IA 52403- Union 8456296 0079154 12/31/2022 Circle G Cattle, LLC Circle G Cattle LLC 4334 390th St. Hospers IA 51238 Sioux 8503002 0033235 5/31/2022 CITY OF AMES STEAM ELECTRIC PLANT AMES MUNICIPAL ELECTRIC SYSTEM 502 CARROLL AVENUE PO BOX 811 AMES IA 50010-0811 (515)239-5171 Story 8456363 0080101 10/31/2021 City View Farms - West Ken Franken 4135 Yellow Ave. Sutherland IA 51058 (712)446-2274 Sioux 7160334 0077569 8/31/2024 City View Farms East Ken Franken 4135 Yellow Ave. Sutherland IA 51058 (712)446-2274 O'Brien 1556657 0078069 10/31/2023 Clan Farms, Inc Hunt Land, LC 59433 - 585th Street Atlantic IA 50022 (712)249-2974 Cass 9420001 0062936 7/31/2025 CLARE CITY OF STP CITY OF CLARE CITY HALL, P.O. BOX 11 CLARE IA 50524-0011 (515)546-6272 Webster 1630001 0027201 6/30/2026 CLARENCE CITY OF STP CITY OF CLARENCE PO BOX 418 CLARENCE IA 52216 (319)452-3625 Cedar 7329001 0035190 6/30/2021 CLARINDA CITY OF STP CITY OF CLARINDA CITY CLERK, CITY HALL 200 S. 15TH STREET CLARINDA IA 51632-2298 (712)542-2136 Page 9909001 0030945 11/30/2017 CLARION, CITY OF STP CITY OF CLARION CITY HALL, PO BOX 266 CLARION IA 50525-0266 (515)532-2847 Wright 1228001 0023388 9/30/2023 CLARKSVILLE CITY OF STP CITY OF CLARKSVILLE 115 W SUPERIOR ST CLARKSVILLE IA 50619-0309 (319)278-4531 Butler 8456473 0083682 6/30/2022 Claussen Farms Mike Claussen 1990 280th St. ROCK VALLEY IA 51247 (712)470-2556 Sioux 1716901 0058441 5/31/2021 CLEAR LAKE SANITARY DISTRICT CLEAR LAKE SANITARY DISTRICT 5631 235TH STREET P.O. BOX 282 CLEAR LAKE IA 50428 (641)357-2019 Cerro Gordo 8012001 0070980 10/31/2024 CLEARFIELD CITY OF STP CITY OF CLEARFIELD CITY HALL, PO BOX 217 CLEARFIELD IA 50840-0217 (641)336-2479 Ringgold 1817001 0042846 7/31/2021 CLEGHORN CITY OF STP City of Cleghorn CITY CLERK, CITY HALL PO Box 37 Cleghorn IA 51014-0037 (712)436-2474 Cherokee 6415001 0057509 2/28/2026 CLEMONS CITY OF STP CITY OF CLEMONS CITY HALL, P.O. BOX 100 CLEMONS IA 50051-0100 (641)477-8070 Marshall 3317001 0024465 8/31/2026 CLERMONT CITY OF STP CITY OF CLERMONT 505 LARABEE STREET, P.O. BOX 6 CLERMONT IA 52135-0006 (563)423-7295 Fayette 5625106 0059978 11/30/2025 CLIMAX MOLYBDENUM COMPANY CLIMAX MOLYBDENUM COMPANY PO BOX 68 EMPIRE CO 80438 (720)942-3452 Lee 2326001 0035947 2/28/2023 CLINTON CITY OF STP CITY OF CLINTON CITY HALL, P.O. BOX 2958 CLINTON IA 52732-2958 (563)242-2144 Clinton 7720002 0078867 8/31/2024 CLIVE, CITY OF MS4 CLIVE, CITY OF 1900 NW 114TH ST. CLIVE IA 50325- (515)223-6220 Polk 8616001 0056812 2/28/2016 CLUTIER CITY OF STP CITY OF CLUTIER 214 MAIN STREET P.O. BOX 117 CLUTIER IA 52217-0117 (319)479-2530 Tama 2326108 0001066 12/31/2025 CLYSAR, LLC CLYSAR, LLC HWY 67 SOUTH CLINTON IA 52732 Clinton 2900109 0074969 9/26/2009 CNH AMERICA LLC BURLINGTON PROVING GROUNDS CNH AMERICA LLC 700 STATE STREET RACINE WI 53404 (414)636-5196 Des Moines 2909100 0000787 3/27/2011 CNH AMERICA, LLC CNH AMERICA, LLC 1930 DES MOINES AVE. BURLINGTON IA 52601-0848 (319)754-3000 Des Moines 9400301 0062421 9/30/2024 COATS UTILITY COMPANY (XENIA RURAL WATER) XENIA RURAL WATER DISTRICT 23998 141ST STREET BOUTON IA 50039 (515)676-2117 Webster 5722001 0024473 12/31/2022 COGGON CITY OF STP CITY OF COGGON CITY HALL, P.O. BOX 79 COGGON IA 52218-0079 (319)435-2314 Linn 7335001 0062332 1/31/2022 COIN CITY OF STP CITY OF COIN CITY CLERK - CITY HALL PO BOX 324 COIN IA 51636 (712)583-3523 Page 2809002 0023604 9/30/2024 COLESBURG CITY OF STP (SOUTHEAST) CITY OF COLESBURG 317 MAIN STREET PO BOX 96 COLESBURG IA 52035 (563)856-3185 Delaware 5009001 0041980 3/31/2025 COLFAX CITY OF STP CITY OF COLFAX 19 E. HOWARD STREET COLFAX IA 50054 (515)674-4096 Jasper 8515001 0047767 7/31/2016 COLLINS CITY OF STP CITY OF COLLINS CITY HALL, P.O. BOX 15 COLLINS IA 50055-0015 (641)385-2205 Story 8520001 0047759 3/31/2022 COLO CITY OF STP CITY OF COLO PO BOX 294 COLO IA 50056-0294 (641)377-2238 Story 5815001 0023523 4/30/2023 COLUMBUS JUNCTION CITY OF STP CITY OF COLUMBUS JUNCTION 232 SECOND STREET COLUMBUS JUNCTION IA 52738- (319)728-7971 Louisa 5600105 0000833 8/31/2026 CONAGRA FOODS PACKAGED FOODS, LLC CONAGRA FOODS PACKAGED FOODS, LLC 9 CONAGRA DR OMAHA NE 68102 Lee 7016001 0058769 7/31/2022 CONESVILLE CITY OF STP CITY OF CONESVILLE PO BOX 10 CONESVILLE IA 52739-0010 (319)725-4217 Muscatine 1000500 0067393 4/30/2025 CONO RIDGE HAVEN RIDGE HAVEN INC. 215 RIDGE HAVEN ROAD BREVARD NC 28712 (828)577-7295 Buchanan 3809001 0034355 2/28/2022 CONRAD CITY OF STP CITY OF CONRAD PO BOX 429 CONRAD IA 50621-0429 (641)366-2300 Grundy 4807001 0079901 8/31/2021 CONROY, IOWA - POWESHIEK WATER ASSOC POWESHIEK WATER ASSOCIATION 125 INDUSTRIAL AVENUE BROOKLYN IA 52211 (641)522-7416 Iowa 8200107 0063525 9/30/2024 CONTINENTAL CEMENT COMPANY, LLC - DAVENPORT PLANT CONTINENTAL CEMENT COMPANY, LLC 16100 SWINGLEY RIDGE RD #230 CHESTERFIELD MO 63017 Scott 3126202 0052864 8/31/2022 Convivium Urban Farmstead Convivium Urban Farmstead 2805 Jackson St. DUBUQUE IA 52001 (563)557-2900 Dubuque 3927002 0028983 1/31/2024 COON RAPIDS CITY OF STP CITY OF COON RAPIDS 123 3RD. AVENUE COON RAPIDS IA 50058-1338 (712)999-2225 Guthrie 1427000 0049692 12/31/2024 COON RAPIDS MUNICIPAL UTILITIES WTP COON RAPIDS MUNICIPAL UTILITIES 123 3RD AVENUE SOUTH PO BOX 207 COON RAPIDS IA 50058 Carroll 5208001 0020788 3/31/2026 CORALVILLE CITY OF STP CITY OF CORALVILLE 1512 7TH STREET PO BOX 5127 CORALVILLE IA 52241-1708 (319)248-1700 Johnson 5208002 0078646 8/31/2024 CORALVILLE, CITY OF MS4 CITY OF CORALVILLE 1512 7TH ST. CORALVILLE IA 52241- (319)248-1720 Johnson 1356238 0079731 6/30/2021 Corey Agri, Inc. of Lytton Beef Feeding Jerry Corey Corey Agri, Inc. 1530 280th St. Lytton IA 50561 (712)830-5522 Calhoun 2100100 0004570 7/31/2022 CORN BELT POWER COOPERATIVE-WISDOM STATION CORN BELT POWER COOPERATIVE 1300 THIRTEENTH STREET NORTH P.O. BOX 508 HUMBOLDT IA 50548 (515)332-2571 Clay 9937101 0079545 9/30/2021 CORN, LP CORN, LP 415 NORTH LOCUST P.O. BOX 280 GOLDFIELD IA 50542 (515)825-3161 Wright 0220001 0027375 10/31/2022 CORNING CITY OF STP CITY OF CORNING CITY HALL 601 6TH ST CORNING IA 50841 (515)322-4230 Adams 0220000 0076759 12/31/2023 CORNING MUNICIPAL UTILITIES WATER TREATMENT PLANT CORNING MUNICIPAL UTILITIES 501 BENTON AVENUE CORNING IA 50841-1617 (641)322-3920 Adams 9721001 0023531 10/31/2021 CORRECTIONVILLE CITY OF STP CITY OF CORRECTIONVILLE 312 DRIFTWOOD STREET P.O. BOX 46 CORRECTIONVILLE IA 51016- (712)372-4791 Woodbury 5280301 0077992 1/31/2025 CORRIDOR RIDGE SUBDIVISION-SHUEYVILLE SEVIG UTILITY COMPANY P.O. BOX 270 WALFORD IA 52351 (319)845-3067 Johnson 4109001 0021351 1/31/2022 CORWITH CITY OF STP CITY OF CORWITH 108 NW ELM STREET, PO BOX 200 CORWITH IA 50430 (515)583-2342 Hancock 9334004 0049573 6/30/2026 CORYDON CITY OF STP CITY OF CORYDON CITY CLERK, CITY HALL PO BOX 169 CORYDON IA 50060-0169 (515)872-1826 Wayne 5200801 0068331 8/31/2022 COTTAGE RESERVE CORPORATION COTTAGE RESERVE CORPORATION 3779 COTTAGE RESERVE ROAD NE P.O. BOX 331 SOLON IA 52333 (319)626-2988 Johnson 7820001 0036641 11/30/2025 COUNCIL BLUFFS CITY OF STP CITY OF COUNCIL BLUFFS CITY HALL, 209 PEARL STREET COUNCIL BLUFFS IA 51503-4270 (712)328-4601 Pottawattamie 7820000 0077470 12/31/2018 COUNCIL BLUFFS NARROWS TREATMENT PLANT COUNCIL BLUFFS WATER WORKS 2000 NORTH 25TH STREET P.O.BOX 309 COUNCIL BLUFFS IA 51502 (712)328-1006 Pottawattamie 7820003 0078271 12/31/2022 COUNCIL BLUFFS, CITY OF MS4 CITY OF COUNCIL BLUFFS 209 PEARL ST. COUNCIL BLUFFS IA 51503- (712)328-4635 Pottawattamie 7820004 0082074 8/31/2022 COUNCIL POINT WATER PURIFICATION PLANT COUNCIL BUFFS WATER WORKS 2000 NORTH 25TH STREET PO BOX 309 COUNCIL BLUFFS IA 51502 (712)328-0018 Pottawattamie 0600601 0077330 1/31/2026 COUNTRY AIRE TRAILER COURT-STP COUNTRY AIRE TRAILER COURT 7297 32ND. AVE. #43 ATKINS IA 52206 (319)446-7825 Benton 8300901 0066214 2/29/2024 COUNTRY CARE CENTER CORPORATION COUNTRY CARE CENTER CORPORATION P.O.BOX 351 HARLAN IA 51537-0351 (712)744-3453 Shelby 5900201 0074551 10/31/2020 COUNTRY CONDOS-STP NICK CATTELL 1206 NORTH 12TH STREET CHARITON IA 50049 (641)203-1869 Lucas 8200601 0065471 8/31/2023 COUNTRY ESTATES MOBILE HOME PARK KEN BENNETT 3923 EAST STATE STREET ROCKFORD IL 61108- (815)399-1188 Scott 6500602 0082201 11/30/2020 COUNTRY ESTATES MOBILE HOME PARK COUNTRY ESTATES MOBILE HOME PARK P.O. BOX 833 COUNCIL BLUFFS IA 51502- (712)310-1105 Mills 8500601 0068527 11/30/2021 COUNTRY LIVING COURT, LLC MYHRE INVESTMENTS PO BOX 111008 ST. PAUL MN 55111 (612)581-8805 Story 7700605 0068004 8/31/2025 COUNTRY LIVING MOBILE HOME PARK COUNTRY LIVING MHP, LLC PO BOX 906 SUMMERLAND CA 93067 (213)458-6900 Polk 4500901 0083461 3/31/2017 COUNTRY WINDS MANOR, INC. COUNTRY WINDS MANOR, INC. 21668 80TH ST. CRESCO IA 52136 (563)547-2389 Howard 8556450 0079561 6/30/2021 Couser Cattle Company Bill Couser 20408 620th Avenue Nevada IA 50201 (515)231-0614 Story 0790122 0077437 9/22/2013 COVENANT MEDICAL CENTER COVENANT MEDICAL CENTER 3421 WEST NINTH STREET WATERLOO IA 50702 (319)272-7853 Black Hawk 7561286 0077585 6/30/2022 Craig Anderson Feedlot Craig Anderson 24999 Jade Ave. Merrill IA 51038 (712)251-1913 Plymouth 7521001 0075850 3/31/2025 CRAIG, CITY OF STP (SOUTHERN SIOUX CO. RURAL WATER SYSTEM) SOUTHERN SIOUX COUNTY RURAL WATER SYSTEM PO BOX 219 IRETON IA 51027- (712)278-2212 Plymouth 9214001 0076074 1/31/2024 CRAWFORDSVILLE, CITY OF (WAPELLO RURAL WATER ASSN) WAPELLO RURAL WATER ASSOCIATION, INC. 534 SHAUL AVE. P.O.BOX 538 OTTUMWA IA 52501-0538 (641)682-8351 Washington 7822001 0076431 9/30/2022 CRESCENT CITY OF STP CITY OF CRESCENT 102 FLORENCE STREET CRESCENT IA 51526-0016 (712)545-3981 Pottawattamie 3126802 0081850 5/31/2026 CRESCENT COMMUNITY HEALTH CENTER PINEBOX, L.L.L.P. 1056 MAIN STREET PO BOX 1862 DUBUQUE IA 52001-1862 (563)557-7010 Dubuque 4515001 0021334 6/30/2026 CRESCO CITY OF STP CITY OF CRESCO CITY HALL, 130 N PARK PL CRESCO IA 52136 (563)547-3101 Howard 4800715 0065480 4/30/2025 CREST COUNTRY INN CREST ENTERPRISES OF IOWA, LLC 340 WEST EVANS ST. WILLIAMSBURG IA 52361 (417)263-1204 Iowa 8816001 0035238 12/31/2025 CRESTON CITY OF STP CITY OF CRESTON CITY HALL 116 W ADAMS, PO BOX 449 CRESTON IA 50801-0449 (641)782-5217 Union 8816000 0078514 10/11/2011 CRESTON CITY WATER TREATMENT PLANT CRESTON CITY WATER WORKS 116 WEST ADAMS STREET CRESTON IA 50801- (641)782-5817 Union 8822001 0074063 6/30/2016 CROMWELL, CITY-STP -SIRWA SOUTHERN IOWA RURAL WATER ASSOCIATION 1391 190TH STREET CRESTON IA 50801 (641)782-5744 Union 2326110 0003522 1/31/2024 CROSS ROADS LAND DEVELOPMENT, LLC CROSS ROADS LAND DEVELOPMENT, LLC 3103 21ST STREET SUITE A CAMANCHE IA 52730- (563)242-6871 Clinton 4356318 0080667 3/31/2023 Crossroads Cattle Company John Reisz Crossroads Cattle Co. 1542 Quay Ave. Woodbine IA 51579 (712)647-2944 Harrison 5600100 0003387 4/30/2024 CRYOTECH DEICING TECHNOLOGY CRYOTECH DEICING TECHNOLOGY 6103 ORTHOWAY FORT MADISON IA 52627 Lee 4115001 0062367 6/30/2016 CRYSTAL LAKE CITY OF STP CITY OF CRYSTAL LAKE CITY HALL, PO BOX 217 CRYSTAL LAKE IA 50432-0217 (641)565-3577 Hancock 4515103 0064955 10/26/2009 CULLIGAN WATER CONDITIONING OF CRESCO KERIAN WATER STORE LLC 606 2ND AVENUE SW P.O. BOX 278 CRESCO IA 52136 (563)547-4014 Howard 1516001 0034363 9/30/2019 CUMBERLAND CITY OF STP CITY OF CUMBERLAND CITY HALL, PO BOX 178 CUMBERLAND IA 50843-0178 (712)774-5614 Cass 9725001 0023477 1/31/2025 CUSHING CITY OF STP CITY OF CUSHING CITY HALL P.O. BOX 14 CUSHING IA 51018-0014 (712)384-2189 Woodbury 7860582 0076040 7/1/2014 Cyclone Cattle, LLC Russell & Diane Keast 45565 Aspen Road Henderson IA 51541- (800)480-2487 Pottawattamie 7414001 0064823 3/31/2023 CYLINDER CITY OF STP CITY OF CYLINDER PO BOX 120 CYLINDER IA 50528 (712)424-3344 Palo Alto 6066014 0081990 1/31/2024 D & B Feedlot Daryl Fluit 1263 260th Street Inwood IA 51240 (712)986-5930 Lyon 3065340 0082970 9/30/2025 D & G Farms Dave Green D & G Farms 1938 220th St. Milford IA 51351 (712)338-4948 Dickinson

23 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Owner Name Owner Address1 Owner Address2 Owner City Owner Owner Zip Owner Phone County State 8466282 0083500 8/31/2026 D & H Feedlot Darwin Rus D & H Feedlot 2279 290th Street ROCK VALLEY IA 51247 (712)870-1805 Sioux 9300104 0077895 3/31/2024 DAIRICONCEPTS, L.P. DAIRICONCEPTS, L.P. 3253 E. CHESTNUT EXPRESSWAY SPRINGFIELD MO 65802 Wayne 4622001 0048003 3/31/2022 DAKOTA CITY CITY OF STP CITY OF DAKOTA CITY P.O. BOX 427 DAKOTA CITY IA 50529-0427 (515)332-3083 Humboldt 2520001 0035319 7/31/2021 DALLAS CENTER CITY OF STP CITY OF DALLAS CENTER CITY CLERK, CITY HALL 1502 WALNUT ST, P.O. BOX 396 DALLAS CENTER IA 50063-0396 (515)992-3725 Dallas 7666839 0083933 12/31/2022 Dallas Janssen Heifer Ranch Dallas Janssen 54846 270th Ave. Palmer IA 50571 (712)450-2316 Pocahontas 6058490 0084239 7/31/2024 Damon Bahnson Combined Operation Damon Bahnson 1754 220th Street Inwood IA 51240 (712)470-4538 Lyon 9766009 0084182 10/31/2023 Dan Burkhart Site #2 Feedlot Dan Burkhart 2657 Lee Ave. Oto IA 51044 (712)829-4499 Woodbury 9729001 0035246 9/30/2022 DANBURY CITY OF STP CITY OF DANBURY 207 1ST ST. PO BOX 336 DANBURY IA 51019-0336 (712)883-2431 Woodbury 2915001 0025861 11/30/2024 DANVILLE CITY OF STP CITY OF DANVILLE PO BOX 265 DANVILLE IA 52623 (319)392-4685 Des Moines 8461591 0083011 9/30/2023 Darin Green Feedlot Darin & Julie Green 2937 Kingbird Ave. BOYDEN IA 51234 (712)541-9357 Sioux 8456598 0053218 6/30/2025 Darin Smith Darin Smith 2040 360th St. HAWARDEN IA 51023 Sioux 2326104 0000914 1/31/2022 DARLING INGREDIENTS INC. DARLING INGREDIENTS, INC. 5601 N. MACARTHUR BLVD. IRVING TX 75038 (972)541-7198 Clinton 8222003 0043052 6/30/2026 DAVENPORT CITY OF STP CITY OF DAVENPORT CITY CLERK, CITY HALL 226 W. 4TH STREET DAVENPORT IA 52801 (563)326-7877 Scott 8222005 0078808 6/30/2024 DAVENPORT, CITY OF MS4 CITY OF DAVENPORT 1200 E. 46TH ST. DAVENPORT IA 52807- (563)326-7734 Scott 8222004 0076261 4/30/2023 DAVENPORT, CITY OF-WEST LOCUST LAGOON CITY OF DAVENPORT P.O.BOX 3606 DAVENPORT IA 52080 (563)326-7877 Scott 3056816 0080128 2/28/2022 David and Dan Lorch Combined Operation David And Dan Lorch 2192 100th Ave. Harris IA 51345 (712)260-4216 Dickinson 2715001 0060232 4/30/2025 DAVIS CITY, CITY OF STP (SIRWA) SOUTHERN IOWA RURAL WATER ASSOCIATION 1391 190TH ST. CRESTON IA 50801 (641)782-5744 Decatur 2600901 0065846 12/31/2015 DAVIS COUNTY CARE FACILITY DAVIS COUNTY BOARD OF SUPERVISORS 100 COURTHOUSE SQ., SUITE 1 BLOOMFIELD IA 52537- (641)724-3511 Davis 9900124 0077411 7/31/2023 DAYBREAK FOODS INC - VINCENT FARM - LAOP DAYBREAK FOODS, INC. PO BOX 800 LAKE MILLS WI 53551 (920)648-8341 Wright 9425001 0023558 2/28/2022 DAYTON CITY OF STP CITY OF DAYTON CITY HALL, P.O. BOX 45 DAYTON IA 50530-0045 (515)547-2711 Webster 2718001 0072745 1/31/2016 DECATUR CITY-STP-SIRWA SOUTHERN IOWA RURAL WATER ASSOCIATION 1391 190TH STREET CRESTON IA 50801-8233 (641)782-5744 Decatur 9630101 0003794 5/31/2012 DECO PRODUCTS CO. DECO PRODUCTS CO. 506 SANFORD STREET DECORAH IA 52101 (319)382-4264 Winneshiek 9630001 0035220 8/31/2022 DECORAH CITY OF STP CITY OF DECORAH CITY HALL, P.O. BOX 138 DECORAH IA 52101-0138 (563)382-3651 Winneshiek 9630502 0084000 5/31/2022 DECORAH COMM SCH DIST - THOMAS R. ROBERTS HIGH SCHOOL DECORAH COMMUNITY SCHOOL DISTRICT 510 WINNEBAGO STREET DECORAH IA 52101- (563)382-4208 Winneshiek 1433001 0035181 10/31/2024 DEDHAM CITY OF STP CITY OF DEDHAM CITY HALL PO BOX 48 DEDHAM IA 51440- (712)683-5711 Carroll 7915001 0071943 6/30/2026 DEEP RIVER, CITY OF STP CITY OF DEEP RIVER CITY HALL, PO BOX 262 DEEP RIVER IA 52222-0262 (641)595-2686 Poweshiek 1856511 0079618 8/31/2022 Deer Run Ranch Dennis Ladwig 311 14th West Spencer IA 51301 (712)262-6762 Cherokee 8315001 0042862 6/30/2023 DEFIANCE CITY OF STP CITY OF DEFIANCE PO BOX 297 DEFIANCE IA 51527 (712)748-3431 Shelby 2813001 0062855 9/30/2018 DELAWARE CITY OF STP CITY OF DELAWARE CITY HALL, 401 7TH ST. DELAWARE IA 52036 (563)922-2743 Delaware 2817001 0047848 11/30/2021 DELHI CITY OF STP CITY OF DELHI 316 FRANKLIN STREET P.O. BOX 225 DELHI IA 52223-0225 (563)922-2588 Delaware 2328001 0061913 4/30/2021 DELMAR, CITY OF STP CITY OF DELMAR PO BOX 175 DELMAR IA 52037-0175 (563)249-1026 Clinton 2421001 0020826 7/31/2022 DELOIT CITY OF STP CITY OF DELOIT PO BOX 473 DELOIT IA 51441 (712)263-5118 Crawford 5417001 0070742 4/30/2024 DELTA CITY OF STP CITY OF DELTA 104 N. 2ND STREET DELTA IA 52550 (641)624-2061 Keokuk 2424001 0023302 12/31/2025 DENISON MUNICIPAL UTILITIES-STP DENISON MUNICIPAL UTILITIES 721 BROADWAY P. O. BOX 518 DENISON IA 51442-0518 (712)263-4154 Crawford 2424000 0077160 4/30/2023 DENISON MUNICIPAL WTP DENISON MUNICIPAL UTILITIES 721 BROADWAY P.O. BOX 518 DENISON IA 51442 (712)263-4154 Crawford 5617901 0073326 5/31/2026 DENMARK SANITARY DISTRICT STP DENMARK SANITARY DISTRICT P. O. BOX 141 DENMARK IA 52624 (319)753-8157 Lee 0915001 0044156 2/28/2022 DENVER CITY OF STP CITY OF DENVER PO BOX 394 100 WASHINGTON ST DENVER IA 50622-0394 (319)984-5642 Bremer 5909001 0080322 1/31/2024 DERBY CITY OF STP CITY OF DERBY P.O. BOX 68 DERBY IA 50068- (641)533-2865 Lucas 7500123 0053180 9/17/2024 DERBY TRUCKING - LAOP JOSH DERBY DERBY TRUCKING, LLC. 23517 OLD HIGHWAY 75 MERRILL IA 51038 Plymouth 7727137 0076511 5/31/2020 DES MOINES - NAHAS AQUATIC CENTER CITY OF DES MOINES - NAHAS AQUATIC CENTER 1551 EAST MARTIN LUTHER KING JR PKWY Des Moines IA 50317 (515)237-1404 Polk 7727008 0075931 4/30/2022 DES MOINES INTERNATIONAL AIRPORT CITY OF DES MOINES 400 EAST 1ST STREET DES MOINES IA 50309 (515)282-4920 Polk 7727001 0044130 2/28/2021 DES MOINES METROPOLITAN WRF DES MOINES METROPOLITAN WRA 3000 VANDALIA ROAD DES MOINES IA 50317 (515)323-8000 Polk 7727127 0069671 1/31/2025 DES MOINES TCE SUPERFUND SITE CITY OF DES MOINES 400 ROBERT D. RAY DR. DES MOINES IA 50309 Polk 2503401 0082104 1/31/2016 DES MOINES WEST KOA (NOW RECREATIONAL ADVENTURES CO.) RECREATIONAL ADVENTURES CO. P.O. BOX 295 HILL CITY SD 57745 Dallas 7727007 0075540 6/30/2024 DES MOINES, CITY OF MS4 CITY OF DES MOINES 400 ROBERT D. RAY DR. DES MOINES IA 50309 (515)323-8037 Polk 2529001 0056821 3/31/2025 DESOTO CITY OF STP CITY OF DESOTO CITY HALL, PO BOX 100 DESOTO IA 50069-0100 (515)834-2233 Dallas 0712901 0063908 10/31/2021 DEWAR SANITARY DISTRICT STP DEWAR SANITARY DISTRICT Robert Steffen - Chairperson P.O. BOX 3 DEWAR IA 50623-0003 (319)240-0746 Black Hawk 2330001 0035271 11/30/2021 DEWITT CITY OF STP CITY OF DEWITT 510 9TH STREET, PO BOX 407 DEWITT IA 52742-0407 (563)659-3811 Clinton 2533001 0058661 2/28/2026 DEXTER CITY OF STP CITY OF DEXTER PO BOX 156 911 STATE STREET DEXTER IA 50070-0156 (515)789-4210 Dallas 8456302 0080349 9/30/2022 DG Farms, Inc. Dolan Granstra 4695 330th Street Sheldon IA 51201 (712)548-6337 Sioux 8018001 0063401 11/30/2023 DIAGONAL CITY OF STP CITY OF DIAGONAL P.O. Box 82 DIAGONAL IA 50845 (641)734-5491 Ringgold 3900300 0068381 4/30/2024 DIAMONDHEAD LAKE DIAMONDHEAD SANITARY DISTRICT PO BOX 71457 CLIVE IA 50325 (515)523-2588 Guthrie 2109001 0080691 1/31/2023 DICKENS WASTEWATER TREATMENT FACILITY IOWA LAKES REGIONAL WATER PO BOX 555 SPENCER IA 51301 (712)262-8847 Clay 3800600 0061689 11/30/2024 DIETRICK MOBILE HOME PARK, INC. DIETRICK MOBILE HOME PARK, INC C/O KATHY GIBERSON 34304 160TH. STREET CEDAR FALLS IA 50613 (319)266-6889 Grundy 3815001 0023311 8/31/2025 DIKE CITY OF STP CITY OF DIKE P.O. BOX 160 DIKE IA 50624 (319)989-2291 Grundy 8225001 0033022 2/28/2026 DIXON CITY OF STP CITY OF DIXON CITY HALL, P.O. BOX 116 DIXON IA 52745- (563)843-3425 Scott 2800904 0075876 11/6/2006 DNR BACKBONE STATE PARK (CABINS & SPILLWAY) IOWA DEPARTMENT OF NATURAL RESOURCES 502 EAST 9TH ST. DES MOINES IA 50319 (515)281-3449 Delaware 2800903 0066044 11/6/2006 DNR BACKBONE STATE PARK (LOWER AREA) IOWA DEPARTMENT OF NATURAL RESOURCES 503 EAST 9TH ST. DES MOINES IA 50319 (515)281-5886 Delaware 3500901 0067385 4/30/2025 DNR BEEDS LAKE STATE PARK IOWA DEPARTMENT OF NATURAL RESOURCES 504 EAST 9TH ST. DES MOINES IA 50319 (515)281-8674 Franklin 4900900 0066010 12/31/2024 DNR BELLEVUE STATE PARK IOWA DEPARTMENT OF NATURAL RESOURCES 505 EAST 9TH ST. DES MOINES IA 50319 (515)281-5886 Jackson 2200900 0054828 2/28/2025 DNR BIG SPRING TROUT HATCHERY IOWA DEPARTMENT OF NATURAL RESOURCES 506 EAST 9TH ST. DES MOINES IA 50319 (515)281-5918 Clayton 9700800 0063622 6/30/2022 DNR BROWN'S LAKE IOWA DEPARTMENT OF NATURAL RESOURCES 507 EAST 9TH ST. DES MOINES IA 50319 (515)281-8071 Woodbury 9400904 0076945 6/30/2017 DNR BRUSHY CREEK ST. PARK - S.EQUESTRIAN CAMPGROUND IOWA DEPARTMENT OF NATURAL RESOURCES 508 EAST 9TH ST. DES MOINES IA 50319 (515)543-8298 Webster 9400903 0074543 6/30/2017 DNR BRUSHY CREEK ST.PARK-N.EQUESTRIAN CAMPGROUND IOWA DEPARTMENT OF NATURAL RESOURCES 509 EAST 9TH ST. DES MOINES IA 50319 (515)281-6157 Webster 9600901 0054798 2/28/2025 DNR DECORAH STATE HATCHERY IOWA DEPARTMENT OF NATURAL RESOURCES 510 EAST 9TH ST. DES MOINES IA 50319 (563)382-8324 Winneshiek 4400901 0052732 4/30/2021 DNR GEODE STATE PARK IOWA DEPARTMENT OF NATURAL RESOURCES 511 EAST 9TH ST. DES MOINES IA 50319 (515)281-5886 Henry 0400922 0081221 3/11/2013 DNR HONEY CREEK RESORT STATE PARK IOWA DEPARTMENT OF NATURAL RESOURCES 512 EAST 9TH ST. DES MOINES IA 50319- Appanoose 0400914 0075949 3/5/2011 DNR HONEY CREEK STATE PARK-(IA.OP.PERMIT) IOWA DEPARTMENT OF NATURAL RESOURCES 513 EAST 9TH ST. DES MOINES IA 50319 (515)281-5145 Appanoose 8900904 0081361 4/30/2018 DNR LACEY KEOSAUQUA STATE PARK IOWA DEPARTMENT OF NATURAL RESOURCES 514 EAST 9TH ST. DES MOINES IA 50319- (515)281-5529 Van Buren 9100900 0066001 1/21/2008 DNR LAKE AHQUABI STATE PARK IOWA DEPARTMENT OF NATURAL RESOURCES 515 EAST 9TH ST. DES MOINES IA 50319 (515)961-7101 Warren 5200900 0072079 12/31/2024 DNR LAKE MACBRIDE STATE PARK-CAMPGROUND IOWA DEPARTMENT OF NATURAL RESOURCES 516 EAST 9TH ST. DES MOINES IA 50319 (515)281-3449 Johnson 8700902 0075515 7/31/2020 DNR LAKE OF THREE FIRES STATE PARK IOWA DEPARTMENT OF NATURAL RESOURCES 517 EAST 9TH ST. DES MOINES IA 50319 (515)281-8674 Taylor 2600902 0076694 1/31/2022 DNR LAKE WAPELLO STATE PARK IOWA DEPARTMENT OF NATURAL RESOURCES 518 EAST 9TH ST. DES MOINES IA 50319 (515)281-5886 Davis 0800903 0077127 4/26/2014 DNR LEDGES STATE PARK IOWA DEPARTMENT OF NATURAL RESOURCES 519 EAST 9TH ST. DES MOINES IA 50319 (515)281-6157 Boone 2800900 0002275 3/31/2025 DNR MANCHESTER TROUT HATCHERY IOWA DEPARTMENT OF NATURAL RESOURCES 520 EAST 9TH ST. DES MOINES IA 50319- (563)927-3276 Delaware 4900903 0076473 6/30/2017 DNR MAQUOKETA CAVES STATE PARK IOWA DEPARTMENT OF NATURAL RESOURCES 521 EAST 9TH ST. DES MOINES IA 50319 (563)652-5833 Jackson 2200902 0075400 7/31/2025 DNR PIKES PEAK STATE PARK-STP IOWA DEPARTMENT OF NATURAL RESOURCES 522 EAST 9TH ST. DES MOINES IA 50319 (515)281-5886 Clayton 4100900 0066028 2/28/2025 DNR PILOT KNOB STATE PARK IOWA DEPARTMENT OF NATURAL RESOURCES 523 EAST 9TH ST. DES MOINES IA 50319 (641)581-4835 Hancock 5700402 0078425 1/31/2023 DNR PLEASANT CREEK STATE RECREATION AREA IOWA DEPARTMENT OF NATURAL RESOURCES 524 EAST 9TH ST. Des Moines IA 50319-0034 (515)281-4579 Linn 5700403 0078433 1/31/2023 DNR Pleasant Creek State Recreation Area IOWA DEPARTMENT OF NATURAL RESOURCES 525 EAST 9TH ST. Des Moines IA 50319-0034 (515)281-4579 Linn 8300900 0077119 7/31/2018 DNR PRAIRIE ROSE STATE PARK IOWA DEPARTMENT OF NATURAL RESOURCES 526 EAST 9TH ST. DES MOINES IA 50319 (515)281-8674 Shelby 0400913 0054844 6/30/2024 DNR RATHBUN FISH HATCHERY IOWA DEPARTMENT OF NATURAL RESOURCES 527 EAST 9TH ST. DES MOINES IA 50319- Appanoose 9700401 0063631 6/30/2022 DNR SNYDER-WINNEBAGO LAKE STP IOWA DEPARTMENT OF NATURAL RESOURCES 528 EAST 9TH ST. DES MOINES IA 50319 (515)281-8071 Woodbury 3900900 0075272 8/31/2023 DNR SPRINGBROOK STATE PARK-EDUCATION CENTER IOWA DEPARTMENT OF NATURAL RESOURCES 529 EAST 9TH ST. DES MOINES IA 50319 (515)281-3449 Guthrie 6900900 0066036 5/31/2026 DNR VIKING LAKE STATE PARK IOWA DEPARTMENT OF NATURAL RESOURCES 530 EAST 9TH ST. DES MOINES IA 50319 (515)281-3449 Montgomery 3300902 0082317 11/30/2014 DNR VOLGA RIVER RECREATIONAL AREA WWTP IOWA DEPARTMENT OF NATURAL RESOURCES 531 EAST 9TH ST. DES MOINES IA 50319- (515)281-5529 Fayette 3215001 0082147 10/31/2025 DOLLIVER, CITY OF STP IOWA LAKES REGIONAL WATER 1301 38TH AVENUE WEST SPENCER IA 51301- (712)262-8847 Emmet 8227001 0029017 12/31/2022 DONAHUE CITY OF STP CITY OF DONAHUE P.O. BOX 79 DONAHUE IA 52746-0079 (563)282-4161 Scott 5620001 0035335 5/31/2024 DONNELLSON CITY OF STP CITY OF DONNELLSON CITY HALL P.O. BOX 50 DONNELLSON IA 52625-0050 (319)835-5714 Lee

24 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Owner Name Owner Address1 Owner Address2 Owner City Owner Owner Zip Owner Phone County State 6015001 0023736 7/31/2023 DOON CITY OF STP CITY OF DOON CITY CLERK, CITY HALL PO BOX 37 DOON IA 51235-0037 (712)726-9303 Lyon 8926001 0076031 2/28/2026 DOUDS/LEANDO,CITY OF(RATHBUN REGIONAL WATER ASSOC) RATHBUN REGIONAL WATER ASSOCIATION 16166 HWY J-29 CENTERVILLE IA 52544 (641)647-2416 Van Buren 2427001 0034371 4/30/2023 DOW CITY, CITY OF STP CITY OF DOW CITY PO BOX 315 Dow City IA 51528-0315 (712)674-3350 Crawford 9921001 0042811 6/30/2024 DOWS CITY OF STP CITY OF DOWS 119 E. Ellsworth Street DOWS IA 50071 (515)852-4327 Wright 2618001 0075612 1/31/2026 DRAKESVILLE, CITY OF-(RATHBUN REGIONAL WATER ASSOC.) RATHBUN REGIONAL WATER ASSOCIATION 16166 HWY J-29 CENTERVILLE IA 52544 (641)647-2416 Davis 8464489 0083054 4/30/2025 Dry Creek Farms, Inc. Glenn Rozeboom 2722 350th Street ROCK VALLEY IA 51247 (712)441-1917 Sioux 3126001 0044458 10/31/2024 DUBUQUE CITY OF STP CITY OF DUBUQUE 50 WEST 13TH STREET DUBUQUE IA 52001 (563)589-4110 Dubuque 3126901 0081876 2/29/2024 DUBUQUE COUNTY COURTHOUSE DUBUQUE COUNTY 720 CENTRAL AVE DUBUQUE IA 52001-7079 (563)589-4479 Dubuque 3126902 0081884 6/30/2024 DUBUQUE COUNTY SHERIFF OFFICE DUBUQUE COUNTY SHERIFF OFFICE 855 CENTRAL AVE PO BOX 1004 DUBUQUE IA 52001 (563)599-0746 Dubuque 3100804 0082031 4/30/2024 DUBUQUE RESIDENTIAL FACILITY DEPARTMENT OF CORRECTIONS 314 E 6TH STREET PO BOX 4030 WATERLOO IA 52001- Dubuque 3126004 0078671 10/31/2024 DUBUQUE, CITY OF MS4 DUBUQUE, CITY OF 50 W. 13TH ST. DUBUQUE IA 52001- (563)589-4276 Dubuque 1240001 0033316 12/31/2022 DUMONT CITY OF STP CITY OF DUMONT CITY HALL, P.O. BOX 303 DUMONT IA 50625-0303 (641)857-3411 Butler 4100901 0065901 4/30/2026 DUNCAN HEIGHTS CARE FACILITY JEREMY & ELAINE BOSSARD 720 BUSH AVE. GARNER IA 50438 Hancock 9427001 0027413 2/28/2026 DUNCOMBE CITY OF STP CITY OF DUNCOMBE CITY HALL, PO BOX 38 DUNCOMBE IA 50532-0038 (515)543-5716 Webster 2821001 0062839 7/31/2022 DUNDEE CITY OF STP CITY OF DUNDEE PO BOX 218 Dundee IA 52038 (563)924-3017 Delaware 0717001 0042790 12/31/2022 DUNKERTON CITY OF STP CITY OF DUNKERTON 200 TOWER STREET, PO BOX 100 DUNKERTON IA 50626-0100 (319)822-4247 Black Hawk 4316001 0042871 8/31/2023 DUNLAP CITY OF STP CITY OF DUNLAP 716 IOWA AVE DUNLAP IA 51529-1336 (712)643-5721 Harrison 7036001 0064891 7/31/2022 DURANT CITY OF STP CITY OF DURANT PO BOX 818 DURANT IA 52747-0818 (563)785-4451 Muscatine 3130001 0023345 4/30/2025 DYERSVILLE CITY OF STP CITY OF DYERSVILLE 340 FIRST AVENUE EAST DYERSVILLE IA 52040 (563)875-7724 Dubuque 8627001 0020745 6/30/2022 DYSART CITY OF STP CITY OF DYSART 601 WILSON STREET, PO BOX 686 DYSART IA 52224-0686 (319)476-5690 Tama 9926001 0034380 11/30/2024 EAGLE GROVE, CITY OF STP CITY OF EAGLE GROVE PO BOX 165, 210 E BROADWAY EAGLE GROVE IA 50533-0165 (515)448-4343 Wright 6115001 0027421 8/31/2024 EARLHAM CITY OF STP CITY OF EARLHAM 140 S. CHESTNUT PO BOX 518 EARLHAM IA 50072 (515)758-2281 Madison 8320001 0025364 7/31/2026 EARLING CITY OF STP CITY OF EARLING 117 MAIN STREET P.O. BOX 147 EARLING IA 51530 (712)747-2181 Shelby 2825001 0042773 4/30/2025 EARLVILLE CITY OF STP CITY OF EARLVILLE 19 NORTHERN AVENUE EARLVILLE IA 52041-2547 (563)923-3365 Delaware 8114001 0035904 5/31/2025 EARLY CITY OF STP CITY OF EARLY 107 MAIN P.O. BOX 411 EARLY IA 50535-0411 (712)273-5283 Sac 4800401 0075213 7/31/2026 EAST IOWA BIBLE CAMP-STP EAST IOWA BIBLE CAMP 1433 F52 TRAIL DEEP RIVER IA 52222 (319)655-7693 Iowa 6122001 0079791 9/30/2022 EAST PERU CITY OF STP (WARREN WATER DISTRICT) WARREN WATER DISTRICT 1204 E 2ND AVE INDIANOLA IA 50125 (515)962-1200 Madison 8456490 0078107 9/30/2022 East Valley Farm, Inc. (Site 1) Mark Vant Hul 3319 Garfield Avenue Rock Valley IA 51247 (712)470-1753 Sioux 2900605 0068241 5/31/2023 ECHO VALLEY MOBILE HOME PARK NO. 2 TIMBERLINE ESTATES, INC. 9 CORPORATION PLACE BROADVIEW HEIGHTS OH 44147 (440)838-4868 Des Moines 2900601 0067725 3/24/2003 ECHO VALLEY MOBILE HOME PARK NO.1 TIMBERLINE ESTATES LTD. DANIEL E. INKS 9 CORPORATION CENTER BROADVIEW HEIGHTS OH 44147 (440)838-4868 Des Moines 9049001 0020770 1/31/2022 EDDYVILLE, CITY OF STP CITY OF EDDYVILLE CITY HALL N FRONT STREET EDDYVILLE IA 52553-0518 (641)969-4267 Wapello 5000600 0067717 3/31/2025 EDGETOWN MOBILE HOME PARK IMRAN WAHEED 17429 PATRICK AVE. OMAHA NE 68116 (402)301-1608 Jasper 2820001 0024490 6/30/2022 EDGEWOOD CITY OF STP CITY OF EDGEWOOD 203 WEST UNION PO BOX 397 EDGEWOOD IA 52042 (563)928-6842 Delaware 3087101 0053277 1/31/2023 EDGEWOOD DR. INFRASTRUCTURE IMPROVEMENTS City of Wahpeton 1201 Dakota Dr. Wahpeton IA 51351 Dickinson 3126118 0076821 11/30/2022 EDWARDS CAST STONE COMPANY EDWARDS CAST STONE COMPANY 777 EDWARDS ROAD DUBUQUE IA 52003-8500 (563)556-0535 Dubuque 8456276 0079189 9/30/2025 Eilts Feedlot Jeff Eilts 2540 450th Street Ireton IA 51027 (712)540-1290 Sioux 9400114 0070661 11/30/2022 ELANCO FORT DODGE ELANCO FORT DODGE 800 5TH ST. NW FORT DODGE IA 50501 (515)302-2538 Webster 8631001 0061964 4/30/2016 ELBERON CITY OF STP CITY OF ELBERON P.O. BOX 144 ELBERON IA 52225-0144 (641)485-9240 Tama 9053001 0022306 8/31/2024 ELDON CITY OF STP CITY OF ELDON CITY HALL, PO BOX 367 ELDON IA 52554-0367 (515)652-7510 Wapello 4236001 0025933 7/31/2025 ELDORA CITY OF STP CITY OF ELDORA CITY HALL, 1442 WASHINGTON STREET ELDORA IA 50627-1699 (641)939-2393 Hardin 8230003 0063231 10/31/2025 ELDRIDGE CITY OF STP (SOUTH SLOPE) CITY OF ELDRIDGE 305 N. THIRD STREET P.O. BOX 375 ELDRIDGE IA 52748-0375 (563)285-4841 Scott 8230004 0084468 7/31/2024 ELDRIDGE, CITY OF MS4 CITY OF ELDRIDGE 305 N 3RD ST ELDRIDGE IA 52748 Scott 3338001 0024414 1/31/2022 ELGIN CITY OF STP CITY OF ELGIN 212 MAIN ST. P.O. BOX 155 ELGIN IA 52141-0155 (319)426-5998 Fayette 1500106 0052718 5/31/2022 ELITE OCTANE, LLC ELITE OCTANE, LLC PO BOX 1203 CARROLL IA 51401 (320)564-3324 Cass 8325001 0027677 8/31/2026 ELK HORN CITY OF STP CITY OF ELK HORN CITY HALL, PO BOX 216 ELK HORN IA 51531 (712)764-5514 Shelby 0721001 0034231 4/30/2023 ELK RUN HEIGHTS CITY OF STP CITY OF ELK RUN HEIGHTS 5042 LAFAYETTE ROAD ELK RUN HEIGHTS IA 50707 (319)232-0020 Black Hawk 0721002 0078280 4/30/2025 ELK RUN HEIGHTS, CITY OF MS4 CITY OF ELK RUN HEIGHTS 5042 LAFAYETTE RD. ELK RUN HEIGHTS IA 50707- (319)232-0020 Black Hawk 2223001 0021962 4/30/2022 ELKADER CITY OF STP CITY OF ELKADER P.O. BOX 427 ELKADER IA 52043-0427 (563)245-2098 Clayton 7730001 0021326 9/30/2019 ELKHART CITY OF STP CITY OF ELKHART 260 NW MAIN STREET PO BOX 77 ELKHART IA 50073-0077 (515)367-4735 Polk 7825001 0034398 2/25/2012 ELLIOTT CITY OF STP CITY OF ELLIOTT CITY HALL, P.O. BOX 57 ELLIOTT IA 51532-9998 (712)767-2351 Pottawattamie 4009001 0026280 8/31/2022 ELLSWORTH CITY OF STP CITY OF ELLSWORTH CITY HALL, P.O. BOX 310 ELLSWORTH IA 50075-0310 (515)836-4751 Hamilton 4525001 0021075 5/31/2024 ELMA CITY OF STP CITY OF ELMA CITY HALL, P.O. BOX 497 ELMA IA 50628-0497 (641)393-2543 Howard 2334901 0062791 7/31/2016 ELWOOD COMMUNITY SANITARY DISTRICT ELWOOD COMMUNITY SANITARY DISTRICT 1284 - 182ND AVENUE ELWOOD IA 52254-6609 (563)678-2429 Clinton 5728001 0047988 12/31/2022 ELY CITY OF STP CITY OF ELY PO BOX 248 ELY IA 52227-0248 (319)848-4103 Linn 5728002 0084476 6/30/2024 ELY, CITY OF MS4 CITY OF ELY 1570 ROWLEY ST ELY IA 52227 Linn 6520001 0024562 4/30/2023 EMERSON CITY OF STP CITY OF EMERSON CITY HALL, P.O. BOX 313 EMERSON IA 51533-0313 (712)824-7866 Mills 7428002 0021580 10/31/2025 EMMETSBURG CITY OF STP CITY OF EMMETSBURG PO BOX 417 EMMETSBURG IA 50536-0417 (712)852-4030 Palo Alto 3133001 0036463 1/31/2026 EPWORTH CITY OF STP CITY OF EPWORTH 212 N. CENTER AVENUE, PO BOX 266 EPWORTH IA 52045-9998 (563)876-3320 Dubuque 2326112 0000191 12/31/2022 EQUISTAR CHEMICALS, LP EQUISTAR CHEMICALS, LP 3400 ANAMOSA ROAD CLINTON IA 52732-2919 (563)244-2323 Clinton 8222108 0060305 4/30/2022 ESCP CORPORATION TY ENTERPRISES 1833 WEST SECOND STREET DAVENPORT IA 52802-1616 (563)322-1400 Scott 7349001 0026603 3/23/2008 ESSEX CITY OF STP CITY OF ESSEX 412 IOWA AVENUE - P.O. BOX 428 ESSEX IA 51638 (712)379-3444 Page 3218002 0023744 12/31/2025 ESTHERVILLE CITY OF STP CITY OF ESTHERVILLE 2 NORTH 7TH STREET PO BOX 417 ESTHERVILLE IA 51334-0417 (712)362-7771 Emmet 0723001 0022004 8/31/2022 EVANSDALE CITY OF STP CITY OF EVANSDALE CITY HALL 123 N EVANS ROAD EVANSDALE IA 50707 (319)232-6683 Black Hawk 0723002 0078654 1/31/2026 EVANSDALE, CITY OF MS4 EVANSDALE, CITY OF 123 N. EVANS RD. EVANSDALE IA 50707- (319)232-6683 Black Hawk 5715121 0003093 11/30/2020 EVERGREEN PACKAGING LLC EVERGREEN PACKAGING LLC 5350 POPLAR AVENUE, SUITE 600 MEMPHIS TN 38119 Linn 2115001 0028916 5/31/2022 EVERLY CITY OF STP City of Everly CITY CLERK - CITY HALL 202 N Main Street PO Box 197 EVERLY IA 51338-0197 (712)834-2691 Clay 0520001 0027987 1/31/2022 EXIRA CITY OF STP CITY OF EXIRA CITY HALL, P.O. BOX 187 EXIRA IA 50076-0187 (712)268-2187 Audubon 0426001 0074381 2/28/2015 Exline, City of, STP RATHBUN REGIONAL WATER ASSOCIATION 16166 HWY. J29 CENTERVILLE IA 52544-8307 (641)647-2416 Appanoose 1025001 0035041 10/31/2021 FAIRBANK CITY OF STP CITY OF FAIRBANK 116 E MAIN STREET, PO BOX 447 FAIRBANK IA 50629-0447 (319)635-2869 Buchanan 5131101 0001074 4/30/2022 FAIRCAST INC. FAIRCAST INC. 905 WEST DEPOT FAIRFIELD IA 52556 (641)954-3132 Jefferson 5731001 0030694 7/31/2024 FAIRFAX CITY OF STP CITY OF FAIRFAX 525 Vanderbilt Street PO BOX 337 FAIRFAX IA 52228 (319)846-2204 Linn 5131000 0082325 9/30/2025 FAIRFIELD WATERWORKS CITY OF FAIRFIELD 118 SO. MAIN P.O. BOX 220 FAIRFIELD IA 52556- Jefferson 5131001 0035076 5/31/2026 FAIRFIELD, CITY OF STP CITY OF FAIRFIELD 118 SOUTH MAIN P.O. BOX 850 FAIRFIELD IA 52556-0850 (515)472-5218 Jefferson 8462532 0078379 5/31/2025 Fairview Feeders Jim Van Beek 1335 290th Street Inwood IA 51240 (712)986-0001 Sioux 5322001 0082929 6/30/2021 FAIRVIEW, COMMUNITY OF EASTERN IOWA REGIONAL UTILITY SERVICES SYSTEM 7600 COMERCE PARK DUBUQUE IA 52002-9673 (563)556-4166 Jones 3135001 0044032 4/30/2025 FARLEY CITY OF STP CITY OF FARLEY CITY HALL, PO BOX 246 FARLEY IA 52046-0246 (563)744-3475 Dubuque 2228001 0028495 9/30/2021 FARMERSBURG CITY OF STP CITY OF FARMERSBURG CITY HALL, P.O. BOX 96 FARMERSBURG IA 52047-0096 (563)536-2390 Clayton 8930001 0060313 9/30/2022 FARMINGTON CITY OF STP CITY OF FARMINGTON P.O. BOX 477 FARMINGTON IA 52626-0477 (319)878-3711 Van Buren 1320001 0028967 2/28/2023 FARNHAMVILLE CITY OF STP CITY OF FARNHAMVILLE CITY CLERK, CITY HALL P.O. BOX 97 FARNHAMVILLE IA 50538-0097 (515)544-3660 Calhoun 3615001 0023493 10/31/2022 FARRAGUT CITY OF STP CITY OF FARRAGUT PO BOX 241 FARRAGUT IA 51639- (712)385-8660 Fremont 3342001 0027456 8/31/2024 FAYETTE CITY OF STP CITY OF FAYETTE CITY HALL, PO BOX 28 FAYETTE IA 52142-0028 (563)425-4316 Fayette 5100201 0075906 12/31/2024 FBP, LLC FBP, LLC 1680 HWY 1, SUITE 3400 FAIRFIELD IA 52556 (641)919-5078 Jefferson 5515001 0081396 4/30/2016 FENTON CITY OF STP CITY OF FENTON P.O. BOX 200 FENTON IA 50539-0200 (515)889-2887 Kossuth 9820001 0058718 3/31/2026 FERTILE CITY OF STP CITY OF FERTILE CITY HALL, P.O. BOX 161 FERTILE IA 50434 (641)797-2121 Worth 9600302 0075442 10/31/2021 FESTINA-WINNESHIEK COUNTY-STP WINNESHIEK COUNTY WINNESHIEK COUNTY COURTHOUSE 201 WEST MAIN STREET DECORAH IA 52101 (319)382-5085 Winneshiek 3937900 0076465 6/30/2022 FIREFLY CREEK RANCH BRENDA ROSE 3316 SW 12TH PLACE DES MOINES IA 50315 (515)554-5489 Guthrie 7700100 0000671 9/3/2008 FIRESTONE AGRICULTURAL TIRE CO. FIRESTONE AGRICULTURAL TIRE COMPANY 2ND AVE. & HOFFMAN ROAD P.O. BOX 1295 DES MOINES IA 50305 (515)243-1211 Polk 6469102 0000230 9/30/2024 FISHER CONTROLS INTERNATIONAL LLC (MAIN OFFICE) EMERSON ELECTRIC COMPANY 8000 WEST FLORISSANT AVE. ST. LOUIS MO 63136 Marshall 9768119 0052174 2/28/2022 Fleck Farms Feedlot Butch Fleck Fleck Farms Feedlot 3798 240th St. ANTHON IA 51004 (712)223-5555 Woodbury

25 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Owner Name Owner Address1 Owner Address2 Owner City Owner Owner Zip Owner Phone County State 4200121 0078841 2/28/2015 FLINT HILLS RESOURCES (NOW POET BIOREFINING - IOWA FALLS, LLC) POET BIOREFINING - IOWA FALLS, LLC 21050 140TH ST. IOWA FALLS IA 50126 (641)648-8938 Hardin 3900903 0081311 1/14/2013 FLINT HILLS RESOURCES MENLO (NOW POET BIOREFINING - MENLO) POET BIOREFINING - MENLO, LLC 3363 TALON AVE. MENLO IA 50164 (641)860-4300 Guthrie 2622000 0074047 1/31/2016 FLORIS, CITY OF- (WAPELLO RURAL WATER ASSN.) WAPELLO RURAL WATER ASSN., INC. P. O. BOX 538 OTTUMWA IA 52501-0538 (515)682-8351 Davis 3414001 0028894 10/31/2024 FLOYD CITY OF STP CITY OF FLOYD 617 MONROE STREET FLOYD IA 50435-0159 (641)398-2857 Floyd 4000201 0082309 11/30/2025 FLYING J NO. 572 PILOT TRAVEL CENTERS, LLC 5508 LONAS RD. KNOXVILLE TN 37909 (865)291-2030 Hamilton 8222201 0074110 6/30/2025 FLYING J TRAVEL PLAZA NO. 636 - DAVENPORT PILOT TRAVEL CENTERS, LLC 5508 LONAS RD. KNOXVILLE TN 37909 Scott 7603002 0046671 1/31/2022 FONDA CITY OF STP CITY OF FONDA CITY CLERK, CITY HALL PO BOX 367 FONDA IA 50540 (712)288-4466 Pocahontas 0135001 0041840 6/30/2023 FONTANELLE CITY OF STP CITY OF FONTANELLE 313 WASHINGTON PO BOX 128 FONTANELLE IA 50846 (641)745-3961 Adair 9525001 0021563 4/30/2025 FOREST CITY CITY OF STP CITY OF FOREST CITY CITY CLERK, CITY HALL PO BOX 346 FOREST CITY IA 50436 (641)585-3311 Winnebago 9641001 0072176 1/31/2024 FORT ATKINSON CITY OF STP CITY OF FORT ATKINSON CITY HALL, P.O. BOX 36 FORT ATKINSON IA 52144-0036 (563)534-3029 Winneshiek 9433003 0044849 9/30/2025 FORT DODGE CITY OF STP CITY OF FORT DODGE 819 1ST AVENUE SOUTH FORT DODGE IA 50501 (515)576-3601 Webster 5625001 0027219 9/30/2024 FORT MADISON CITY OF STP CITY OF FORT MADISON CITY HALL 811 AVENUE EAST PO BOX 240 FORT MADISON IA 52627-0240 (319)372-7700 Lee 5625000 0081001 1/31/2024 FORT MADISON WATER TREATMENT PLANT CITY OF FORT MADISON 811 AVE E PO BOX 240 FORT MADISON IA 52627 (319)372-7700 Lee 2122001 0061841 8/31/2023 FOSTORIA CITY OF STP CITY OF FOSTORIA CITY HALL PO BOX 37 FOSTORIA IA 51340-0037 (712)262-8930 Clay 5710801 0076732 9/30/2025 FOUR OAKS GROUP HOME - BERTRAM CAMPUS FOUR OAKS FAMILY AND CHILDRENS SERVICES 5400 KIRKWOOD BLVD.SW CEDAR RAPIDS IA 52404 (319)364-0259 Linn 1940001 0028991 1/26/2008 FREDERICKSBURG CITY OF STP CITY OF FREDERICKSBURG CITY CLERK, CITY HALL P.O. BOX 318 FREDERICKSBURG IA 50630 (563)237-5725 Chickasaw 0922001 0058939 7/31/2024 FREDERIKA CITY OF STP CITY OF FREDERIKA P.O. BOX C FREDERIKA IA 50631-0112 (319)275-4579 Bremer 6234001 0056791 3/31/2017 FREMONT CITY OF STP CITY OF FREMONT CITY HALL, PO BOX 301 FREMONT IA 52561-0301 (641)933-4317 Mahaska 7900104 0083577 5/31/2024 FREMONT FARMS OF IOWA L.L.P. - LAOP FREMONT FARMS OF IOWA L.L.P. 3868 110TH STREET MALCOM IA 50157- Poweshiek 4715001 0056537 6/30/2026 GALVA CITY OF STP CITY OF GALVA 116 S. MAIN ST P.O. BOX 102 GALVA IA 51020-0102 (712)282-4228 Ida 2725001 0069175 10/31/2022 GARDEN GROVE CITY OF STP CITY OF GARDEN GROVE CITY HALL, P.O. BOX 120 GARDEN GROVE IA 50103-0120 (641)443-2965 Decatur 2234001 0026697 4/2/2008 GARNAVILLO CITY OF STP City of Garnavillo City Clerk - Cty Hall PO Box 14 Garnavillo IA 52049-0014 (563)964-2331 Clayton 4130002 0036153 2/29/2024 GARNER CITY OF STP CITY OF GARNER 135 W. 5TH STREET GARNER IA 50348- (641)923-2588 Hancock 0625001 0056804 5/31/2023 GARRISON CITY OF STP CITY OF GARRISON PO BOX 130 GARRISON IA 52229-0130 (319)477-8353 Benton 8637001 0025925 6/30/2020 GARWIN CITY OF STP CITY OF GARWIN CITY HALL, 208 MAIN ST. GARWIN IA 50632 (641)499-2307 Tama 1856935 0084042 7/31/2024 Gary Rupp Combined Operation Gary Rupp 6141 E Avenue MARCUS IA 51035- (712)447-6409 Cherokee 2900901 0065447 7/31/2025 GATEWAY CENTER CARE FACILITY-STP DES MOINES CO.BD.OF SUPERVISORS 513 N. MAIN STREET BURLINGTON IA 52601 (319)753-8232 Des Moines 5200201 0074985 3/31/2024 GATEWAY COMMERCIAL CONDOMINIUM ASSOCIATION GATEWAY COMMERCIAL CONDO OWNERS ASSOC. 4914 DOLPHIN DRIVE SE, UNIT A IOWA CITY IA 52240 (319)330-2121 Johnson 6066047 0082058 8/31/2025 Gaylon Rozeboom Feedlot Gaylon Rozeboom 2548 180th Street ROCK RAPIDS IA 51246 (712)470-4948 Lyon 9700101 0004413 1/31/2023 GELITA USA, INC. GELITA NORTH AMERICA P.O. BOX 927 SIOUX CITY IA 51102- (712)943-0305 Woodbury 7700121 0052209 10/31/2024 GENERAL MILLS AVON PLANT GENERAL MILLS OPERATIONS INC. 6101 SE 52ND STREET CARLISLE IA 50047 Polk 6028001 0036081 9/30/2022 GEORGE CITY OF STP CITY OF GEORGE CITY HALL, P.O. BOX 686 GEORGE IA 51237-0686 (712)475-3612 Lyon 7078101 0061972 5/31/2022 GERDAU GERDAU 1500 WEST THIRD STREET PO BOX 1059 WILTON IA 52778-3002 (563)732-4650 Muscatine 8531001 0025968 5/31/2025 GILBERT, CITY OF STP CITY OF GILBERT PO BOX 29 119 Main Street Gilbert IA 50105-0029 (515)233-2670 Story 0733001 0028177 5/31/2022 GILBERTVILLE CITY OF STP CITY OF GILBERTVILLE CITY HALL, P.O. BOX 107 GILBERTVILLE IA 50634-0107 (319)296-1822 Black Hawk 6436001 0029033 9/30/2022 GILMAN CITY OF STP CITY OF GILMAN CITY HALL, 128 N MAIN STREET GILMAN IA 50106 (515)498-2531 Marshall 7607001 0031194 10/31/2018 GILMORE CITY, CITY OF STP GILMORE CITY, CITY OF CITY HALL 304 S GILMORE ST, PO BOX 276 GILMORE CITY IA 50541-0276 (515)373-6326 Pocahontas 8640001 0025330 12/31/2022 GLADBROOK CITY OF STP CITY OF GLADBROOK CITY HALL, P.O. BOX 309 GLADBROOK IA 50635- (641)473-2582 Tama 1438001 0024571 4/30/2021 GLIDDEN CITY OF STP CITY OF GLIDDEN CITY CLERK, CITY HALL P.O. BOX 349 GLIDDEN IA 51443 (712)659-3010 Carroll 6525001 0021946 10/31/2024 GMU WASTEWATER TREATMENT FACILITY GLENWOOD MUNICIPAL UTILITIES 7 N. VINE ST. GLENWOOD IA 51534 (712)527-4941 Mills 1700127 0078735 10/31/2022 GOLDEN GRAIN ENERGY, LLC GOLDEN GRAIN ENERGY, LLC 1822 43RD STREET SW MASON CITY IA 50401 (641)423-8525 Cerro Gordo 9937001 0036137 7/31/2018 GOLDFIELD CITY OF STP CITY OF GOLDFIELD 423 N MAIN STREET PO BOX 27 GOLDFIELD IA 50542 (515)825-3613 Wright 2339001 0056944 7/31/2021 GOOSE LAKE CITY OF STP CITY OF GOOSE LAKE 1 SCHOOL LANE P.O. BOX 37 GOOSE LAKE IA 52750 (563)577-2300 Clinton 9436001 0020966 6/30/2024 GOWRIE MUNICIPAL UTILITIES GOWRIE MUNICIPAL UTILITIES PO BOX 47 GOWRIE IA 50543-0047 (515)352-3065 Webster 7445001 0027821 10/31/2022 GRAETTINGER CITY OF STP CITY OF GRAETTINGER 104 S. CEDAR ST, P.O. BOX 418 GRAETTINGER IA 51342-0418 (712)859-3934 Palo Alto 9825001 0062529 8/31/2022 GRAFTON CITY OF STP CITY OF GRAFTON PO BOX 550 GRAFTON IA 50440-0550 (641)748-2970 Worth 7048101 0003441 6/30/2021 GRAIN PROCESSING CORPORATION GRAIN PROCESSING CORPORATION 1600 OREGON STREET P.O. BOX 349 MUSCATINE IA 52761 (563)264-4704 Muscatine 3100605 0063240 12/2/2006 GRANADA GARDENS MOBILE HOME PARK GRANADA ENTERPRISES 11941 RT. 52 N. DUBUQUE IA 52002 (563)552-2494 Dubuque 6000201 0083348 3/31/2016 GRAND FALLS CASINO RESORT GRAND FALLS CASINO RESORT 1415 GRAND FALLS BLVD LARCHWOOD IA 51241- (712)777-7777 Lyon 3730001 0041891 1/31/2022 GRAND JUNCTION CITY OF STP CITY OF GRAND JUNCTION 212 MAIN ST. E, PO BOX 15 GRAND JUNCTION IA 50107-0015 (515)738-2585 Greene 2341001 0027642 12/31/2024 GRAND MOUND CITY OF STP CITY OF GRAND MOUND P.O.BOX 206 615 SUNNYSIDE STREET GRAND MOUND IA 52751 (563)847-2190 Clinton 2760056 0077712 9/30/2024 Grand River Cattle Co, LLC Grand River Cattle Company, LLC 12011 205th Street Grand River IA 50108 (641)783-2514 Decatur 3126121 0077399 5/31/2026 GRAND RIVER CENTER CITY OF DUBUQUE 50 WEST 13TH STREET DUBUQUE IA 52001 (563)585-1200 Dubuque 2728001 0066346 10/31/2022 GRAND RIVER CITY OF STP CITY OF GRAND RIVER PO BOX 475 GRAND RIVER IA 50108 (641)773-5347 Decatur 5842001 0062901 2/28/2025 GRANDVIEW CITY OF STP CITY OF GRANDVIEW 104 S MAIN STREET P.O. BOX 100 GRANDVIEW IA 52752 (319)729-4013 Louisa 2537001 0041912 7/31/2021 GRANGER CITY OF STP CITY OF GRANGER 1903 MAIN STREET PH BOX 333 GRANGER IA 50109-0333 (515)999-2210 Dallas 8429001 0043486 12/31/2022 GRANVILLE CITY OF STP CITY OF GRANVILLE PO BOX 114 GRANVILLE IA 51022-0114 (712)727-3365 Sioux 8728001 0075957 2/28/2015 GRAVITY, CITY OF (SOUTHERN IOWA RURAL WATER ASSN.) SOUTHERN IOWA RURAL WATER ASSOCIATION 1391 190TH STREET CRESTON IA 50801 (641)782-5744 Taylor 7700119 0077941 4/30/2022 GREATER DES MOINES ENERGY CENTER MIDAMERICAN ENERGY COMPANY 4299 NW URBANDALE DRIVE URBANDALE IA 50322-7916 (515)242-4044 Polk 2831001 0040291 10/31/2022 GREELEY CITY OF STP CITY OF GREELEY CITY HALL, P.O. BOX 37 GREELEY IA 52050-0037 (563)925-2988 Delaware 2900603 0067733 6/28/2014 GREEN ACRES MOBILE HOME PARK GREEN ACRES MOBILE HOME PARK, LTD 11912 HWY. 99 BURLINGTON IA 52601 (319)753-1822 Des Moines 6440001 0048236 5/31/2026 GREEN MOUNTAIN - IOWA REGIONAL UTILITIES ASSOC. IOWA REGIONAL UTILITIES ASSOCIATION 1351 IOWA SPEEDWAY DRIVE NEWTON IA 50208 (641)792-7011 Marshall 3600102 0082210 4/30/2026 GREEN PLAINS SHENANDOAH, LLC GREEN PLAINS INC. 1811 AKSARBEN DRIVE OMAHA NE 68106 (402)884-8776 Fremont 3000105 0081281 10/31/2023 GREEN PLAINS SUPERIOR, LLC GREEN PLAINS INC. 1811 AKSARBEN DR OMAHA NE 68106 (402)884-8700 Dickinson 8800100 0003964 4/30/2016 GREEN VALLEY CHEMICAL CORPORATION GREEN VALLEY CHEMICAL CORPORATION 1284 N. CHERRY STREET ROAD CRESTON IA 50801 (641)782-7041 Union 1253001 0035432 6/30/2026 GREENE CITY OF STP CITY OF GREENE CITY HALL, P.O. BOX 471 GREENE IA 50636-0471 (641)816-5976 Butler 0140001 0021369 9/30/2019 GREENFIELD CITY OF STP CITY OF GREENFIELD 202 S 1ST STREET PO BOX 95 GREENFIELD IA 50849 (641)743-2183 Adair 0140000 0048453 12/31/2021 GREENFIELD MUNICIPAL UTILITIES WTP GREENFILED MUNICIPAL UTILITIES WTP 202 SOUTH 1ST ST. GREENFIELD IA 50849 Adair 2133001 0079260 6/30/2021 GREENVILLE, CITY OF STP Iowa Lakes Regional Water 1301 38th Avenue West Spencer IA 51301 (712)262-8847 Clay 6556217 0077909 8/31/2021 Gregory Feedlots North, Inc. Jim Gregory 1164 305th Street TABOR IA 51653 (712)370-1008 Mills 3663404 0079804 10/31/2021 Gregory Feedlots, Inc. (South Site) Jim Gregory 1164 305th Ave. Tabor IA 51653 (712)370-1008 Fremont 7736002 0078883 12/31/2024 GRIMES, CITY OF MS4 CITY OF GRIMES 101 N. HARVEY ST. GRIMES IA 50111- (515)986-3036 Polk 7736001 0035939 1/31/2021 GRIMES, CITY OF STP City of Grimes City Hall 101 North Harvey Grimes IA 50111 (515)986-3036 Polk 7930001 0031186 12/31/2024 GRINNELL, CITY OF STP CITY OF GRINNELL 520 4TH AVE GRINNELL IA 50112 (641)236-2600 Poweshiek 1528001 0031411 4/30/2022 GRISWOLD CITY OF STP CITY OF GRISWOLD PO BOX 760 GRISWOLD IA 51535- (712)778-2615 Cass 6056953 0080900 8/31/2023 Groeneweg Livestock Facility Loren Groeneweg 3325 Chestnut Ave. Hudson SD 57034 (712)982-5816 Lyon 3833001 0024511 8/31/2024 GRUNDY CENTER CITY OF STP CITY OF GRUNDY CENTER CITY HALL 703 F AVENUE GRUNDY CENTER IA 50638-1450 (319)825-6118 Grundy 3225001 0077488 8/31/2023 GRUVER CITY OF IOWA LAKES REGIONAL WATER 1301 38TH AVE WEST SPENCER IA 51301 (712)262-8847 Emmet 3937001 0041866 10/31/2022 GUTHRIE CENTER CITY OF STP CITY OF GUTHRIE CENTER CITY HALL, 400 STATE ST. GUTHRIE CENTER IA 50115 (641)332-2190 Guthrie 3900103 0075361 9/30/2024 GUTHRIE CENTER EGG FARM ROSE ACRE FARMS, INC. 6874 N. BASE ROAD P.O. BOX 1250 SEYMOUR IN 47274- Guthrie 3900106 0053064 10/28/2024 GUTHRIE CENTER EGG FARM - LAOP ROSE ACRE FARMS, INC. 1657 W TIPTON ST. SEYMOR IN 47274 Guthrie 2242001 0022284 4/30/2026 GUTTENBERG CITY OF STP CITY OF GUTTENBERG CITY HALL P.O. BOX 580 GUTTENBERG IA 52052-0580 (563)252-1161 Clayton 1444001 0075817 10/31/2023 HALBUR CITY OF (WEST CENTRAL IA RURAL WATER ASSN) WEST CENTRAL IOWA RURAL WATER ASSOCIATION P.O. BOX 188 MANNING IA 51455 (712)655-2534 Carroll 9756605 0081132 4/30/2023 Hamann Feedlot Darwin Hamann 604 W Main Street Anthon IA 51004 (712)373-5507 Woodbury 3621001 0048321 11/30/2022 HAMBURG CITY OF STP CITY OF HAMBURG PO BOX 106 HAMBURG IA 51640-0106 (712)382-1313 Fremont 3544001 0036471 9/30/2021 HAMPTON CITY OF STP CITY OF HAMPTON CITY HALL 122 1ST AVE. NW HAMPTON IA 50441 (641)456-4853 Franklin 7833001 0023485 7/31/2024 HANCOCK CITY OF STP CITY OF HANCOCK CITY HALL PO BOX 108 HANCOCK IA 51536-0108 (712)741-5665 Pottawattamie 7556900 0078581 5/31/2026 Hansen Feed Yards Rick Hansen Hansen Feed Yards 21733 C-60 Hinton IA 51024 (712)239-5136 Plymouth 6056433 0081159 4/30/2023 Hansmann Feedlot Chad Hansmann 1916 Kennedy Ave GEORGE IA 51237 (712)475-3258 Lyon

26 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Owner Name Owner Address1 Owner Address2 Owner City Owner Owner Zip Owner Phone County State 9442001 0076244 1/31/2023 HARCOURT, CITY OF STP CITY OF HARCOURT P.O. BOX 367 HARCOURT IA 50544-0367 (515)354-5349 Webster 8335002 0021342 1/31/2024 HARLAN CITY OF STP CITY OF HARLAN 711 DURANT STREET P.O. BOX 650 HARLAN IA 51537-0650 (712)755-5137 Shelby 8335000 0084387 5/31/2026 HARLAN MUNICIPAL UTILITIES WATER TREATMENT PLANT HARLAN MUNICIPAL UTILITIES 2412 SOUTHWEST AVE HARLAN IA 51537 (712)755-5182 Shelby 5428001 0079359 2/28/2026 HARPER, CITY OF STP REGIONAL UTILITY SERVICE SYSTEMS 901 N, 8th Street Fairfield IA 52556 (641)209-1011 Keokuk 0330001 0070564 11/30/2022 HARPERS FERRY, CITY OF STP CITY OF HARPERS FERRY P.O. BOX 250 HARPERS FERRY IA 52146-0250 (563)586-2777 Allamakee 7222001 0036048 9/30/2022 HARRIS CITY OF STP CITY OF HARRIS PO BOX 135 HARRIS IA 51345-0135 (712)349-2406 Osceola 9128001 0066761 9/30/2021 HARTFORD CITY OF STP CITY OF HARTFORD 150 WEST ELM, PO BOX 910 HARTFORD IA 50118-0910 (515)989-0267 Warren 7128001 0036480 6/30/2024 HARTLEY CITY OF STP CITY OF HARTLEY 11 S. CENTRAL AVENUE HARTLEY IA 51346 (712)928-2240 O'Brien 5000603 0065668 9/30/2023 HARVESTER GOLF CLUB DEVELOPMENT CENTRAL IOWA WATER ASSOCIATION 1351 IOWA SPEEDWAY DRIVE NEWTON IA 50208-8254 (641)792-7011 Jasper 6338001 0072338 11/30/2022 HARVEY CITY OF STP CITY OF HARVEY CITY HALL, P.O. BOX 87 HARVEY IA 50119 (641)949-6600 Marion 6527001 0079758 4/30/2023 HASTINGS, CITY OF STP HASTINGS CITY OF STP 401 INDIAN AVE HASTINGS IA 51540 (712)624-9021 Mills 8459740 0079499 5/31/2023 Haverhals Feedlot Pete Haverhals 2320 400th Street Hawarden IA 51023 (712)722-4093 Sioux 8434001 0021083 6/30/2024 HAWARDEN CITY OF STP CITY OF HAWARDEN 1150 CENTRAL AVE HAWARDEN IA 51023 (712)552-2565 Sioux 5600602 0068063 12/31/2015 HAWES ENTERPRISES LLC RANDY HAWES 2483 180TH AVE DONNELLSON IA 52625 (319)835-9336 Lee 5600605 0067938 4/27/2013 HAWES INVESTMENTS (NOW DENNINGS BROTHERS LLC, SERIES III) DENNINGS BROTHERS LLC, SERIES III PO BOX 164 FORT MADISON IA 52627 Lee 3346001 0036072 4/30/2025 HAWKEYE CITY OF STP CITY OF HAWKEYE P.O. BOX 145 HAWKEYE IA 52147 (563)427-4830 Fayette 4100201 0083160 8/31/2024 HAWKEYE PRIDE EGG FARMS, L.L.P. HAWKEYE PRIDE EGG FARMS, L.L.P. 241 ST. ANDREWS WAY SIOUX CENTER IA 51250- (712)722-4265 Hancock 4100203 0053115 3/11/2024 HAWKEYE PRIDE EGG FARMS, L.L.P. - LAOP HAWKEYE PRIDE EGG FARMS, L.L.P. 241 ST. ANDREWS WAY SIOUX CENTER IA 51250 Hancock 2326115 0068101 5/31/2026 HAWKINS - CAMANCHE HAWKINS, INC. 2381 ROSEGATE ROSEVILLE MN 55113 (612)331-6910 Clinton 1031001 0044024 10/31/2022 HAZLETON CITY OF STP CITY OF HAZLETON CITY HALL, P.O. BOX 500 HAZLETON IA 50641-0500 (319)636-2559 Buchanan 5432001 0036498 11/30/2025 HEDRICK CITY OF STP CITY OF HEDRICK 109 MAIN STREET PO BOX 167 HEDRICK IA 52563-0167 (641)653-4914 Keokuk 6529001 0061590 7/31/2023 HENDERSON CITY OF STP CITY OF HENDERSON CITY HALL, 310 MAPLE ST. HENDERSON IA 51541 (712)825-5151 Mills 5640106 0063045 4/30/2022 HENDRICKS RIVER LOGISTICS, LLC HENDRICKS RIVER LOGISTICS, LLC 3254 MISSISSIPPI RIVER ROAD KEOKUK IA 52632 (319)524-6841 Lee 4800205 0074225 3/31/2023 HERITAGE INN AMANA COLONIES S&S HOTELS, INC. 711 S DOWNEY ST. WEST BRANCH IA 52358 Iowa 5735000 0078743 1/31/2026 HIAWATHA, CITY OF MS4 HIAWATHA, CITY OF 81 EMMONS ST. HIAWATHA IA 52233 (319)393-1515 Linn 3100302 0063991 2/28/2022 HICKORY ACRES SUBDIVISION HICKORY ACRES HOMEOWNER'S ASSOCIATION 8854 PHEASANT LANE DUBUQUE IA 52003 (563)583-9005 Dubuque 8500600 0067814 1/31/2025 HICKORY GROVE COURT, LLC PETER GILLIN 11931 MARBLE ARCH DR. SANTA ANA CA 92705 (949)929-4649 Story 8600900 0066940 9/30/2025 HICKORY HILLS PARK BLACKHAWK COUNTY CONSERVATION BOARD 1346 WEST AIRLINE HWY WATERLOO IA 50703- (319)433-7275 Tama 5600301 0076970 2/10/2007 HIDDEN OAKS ESTATES SUBDIVISION-STP Hidden Oaks Estates Subdivision 2808 Brentwood Dr. Fort Madison IA 52627 (319)470-2780 Lee 9000601 0067636 10/31/2017 HIDDEN VALLEY MHP (NOW BEAR CREEK FLATS) STEVEN CLIFTON BEAR CREEK FLATS, LLC 12595 120TH AVE. OTTUMWA IA 52501 (641)455-8602 Wapello 7557919 0080977 2/28/2023 Hiemstra Farms Scott Hiemstra 44485 300th Street KINGSLEY IA 51028- (712)251-4699 Plymouth 9200501 0070084 8/31/2022 HIGHLAND COMMUNITY SCHOOL HIGHLAND COMMUNITY SCHOOL 1715 VINE AVE RIVERSIDE IA 52327 (319)648-3822 Washington 5221002 0052894 8/31/2025 HILLS, CITY OF WWTF CITY OF HILLS 201 N 1ST STREET P.O. BOX 345 HILLS IA 52235-0345 (319)679-3197 Johnson 4425001 0072435 6/30/2016 HILLSBORO CITY OF STP CITY OF HILLSBORO 105 E COMMERCIAL ST., PO BOX 133 HILLSBORO IA 52630 (319)253-4465 Henry 4800901 0065927 4/30/2018 HILLSIDE ESTATES CARE FACILITY (NOW BAYER PRODUCTION SUPPLY) BAYER PRODUCTION SUPPLY LLC 503 S MAPLEWOOD AVE. WILLIAMSBURG IA 52361 (319)668-3112 Iowa 7528001 0057053 1/31/2019 HINTON CITY OF STP CITY OF HINTON 205 WEST MAIN PO BOX 1023 HINTON IA 51024-1023 (712)947-4129 Plymouth 1750116 0071951 11/30/2021 HOLCIM (US) INC. - WEST QUARRY HOLCIM (US) INC. 1840 N. FEDERAL AVENUE P.O. BOX 1008 MASON CITY IA 50401-1008 (641)421-3308 Cerro Gordo 3839001 0041254 4/30/2026 HOLLAND CITY OF STP CITY OF HOLLAND CITY HALL, P.O. BOX 142 HOLLAND IA 50642-0142 (319)824-5131 Grundy 4721001 0021954 12/31/2022 HOLSTEIN CITY OF STP CITY OF HOLSTEIN PO BOX 500 HOLSTEIN IA 51025-0500 (712)368-4898 Ida 3146001 0025992 3/31/2024 HOLY CROSS CITY OF STP CITY OF HOLY CROSS 895 MAIN STREET HOLY CROSS IA 52053 (563)870-2475 Dubuque 1900107 0081981 12/17/2013 HOMELAND ENERGY SOLUTIONS, LLC HOMELAND ENERGY SOLUTIONS, LLC 106 WEST MAIN PO BOX C RICEVILLE IA 50466- Chickasaw 8500603 0067806 12/31/2015 HOMESTEAD COLONY MOBILE HOME PARK HOMESTEAD COLONY MOBILE HOME PARK FLUMMERFELT PROPERTIES 1316 SOUTH DUFF AMES IA 50010-5441 (515)232-3699 Story 4830901 0023591 4/30/2019 HOMESTEAD SANITARY DISTRICT HOMESTEAD SANITARY DISTRICT 4310 V STREET HOMESTEAD IA 52236 (319)622-3746 Iowa 8460406 0082520 8/31/2026 Hoogland Dairy Peter Hoogland 2982 470th Street Maurice IA 51036-7589 (712)395-2008 Sioux 8456222 0077615 9/30/2024 Hoogland Feedlot Junior Hoogland 2982 470th Street Maurice IA 51036 (712)567-5105 Sioux 2835001 0023469 8/31/2025 HOPKINTON CITY OF STP CITY OF HOPKINTON CITY HALL PO BOX 154 HOPKINTON IA 52237 (319)926-2181 Delaware 9738001 0036501 12/31/2023 HORNICK CITY OF STP CITY OF HORNICK 400 MAIN STREET P.O. BOX 67 HORNICK IA 51026-0067 (712)874-3374 Woodbury 8439001 0036897 6/30/2023 HOSPERS CITY OF STP CITY OF HOSPERS 100 3RD AVE. SOUTH P.O. BOX 248 HOSPERS IA 51238-0248 (712)752-8593 Sioux 5633001 0036901 6/30/2016 HOUGHTON CITY OF STP CITY OF HOUGHTON P.O. BOX 113 HOUGHTON IA 52631-0113 (319)469-6811 Lee 4254001 0031429 11/30/2019 HUBBARD CITY OF STP CITY OF HUBBARD CITY HALL, P.O. BOX 265 HUBBARD IA 50122 (641)864-3334 Hardin 1100107 0076767 11/30/2024 HUBBARD FEEDS INC. ALLTECH 3031 CATNIP HILL ROAD NICHOLASVILLE KY 40356 (859)885-9613 Buena Vista 0737002 0027243 7/31/2023 HUDSON CITY OF STP CITY OF HUDSON PO BOX 536 HUDSON IA 50643-0536 (319)988-3600 Black Hawk 0737003 0084484 5/31/2024 HUDSON, CITY OF MS4 CITY OF HUDSON 525 JEFFERSON ST PO BOX 536 HUDSON IA 50643 Black Hawk 8444001 0020991 5/31/2024 HULL CITY OF STP CITY OF HULL CITY HALL, PO BOX 816 HULL IA 51239-0816 (712)439-1521 Sioux 4641001 0047791 11/30/2025 HUMBOLDT CITY OF STP CITY OF HUMBOLDT 29 5TH STREET SOUTH P.O.BOX 529 HUMBOLDT IA 50548- (515)332-1006 Humboldt 9348001 0043150 7/31/2022 HUMESTON CITY OF STP CITY OF HUMESTON PO BOX 188 HUMESTON IA 50123 (641)877-6841 Wayne 7157435 0080365 2/28/2023 Hunt Brothers Feedlot Steven & Chris Hunt Hunt Brothers Feedlot 4817 Monroe Ave. Granville IA 51022 (712)727-3647 O'Brien 5059104 0076121 3/31/2022 HUNT CLEANERS, INC. HUNT CLEANERS, INC. 604 W 2ND ST COZAD NE 69130 (308)784-3366 Jasper 8538002 0083518 4/30/2022 HUXLEY CITY OF STP CITY OF HUXLEY 515 N MAIN AVE HUXLEY IA 50124- (515)597-2562 Story 1600113 0071056 2/17/2010 HWH CORPORATION HWH CORPORATION 2096 MOSCOW ROAD MOSCOW IA 52760 (563)724-3396 Cedar 1000905 0053285 2/1/2023 HWY 150 HMA PAVEMENT PROJECT IOWA DOT 800 LINCOLN WAY AMES IA 50010 Buchanan 9800802 0084221 3/31/2026 I35-105 INTERCHANGE COMMERCIAL DISTRICT WORTH COUNTY 1000 CENTRAL AVENUE NORTHWOOD IA 50459- (641)324-2316 Worth 3100202 0081612 8/31/2023 ICE HARBOR CENTER STONEKEY PROPERTIES, LLC 4652 PASCAGOULA RUN GREENWOOD IN 46413 (317)407-6814 Dubuque 4728001 0020761 4/30/2026 IDA GROVE CITY OF STP CITY OF IDA GROVE 403 3RD STREET P.O. BOX 236 IDA GROVE IA 51445 (712)364-2428 Ida 5225110 0079235 8/31/2025 IIHR OAKDALE ANNEX THE UNIVERSITY OF IOWA IIHR HYDROSCIENCE & ENGINEERING 300 S. RIVERSIDE DRIVE IOWA CITY IA 52241- Johnson 1037001 0036510 9/30/2025 INDEPENDENCE CITY OF STP CITY OF INDEPENDENCE CITY HALL 331 1ST STREET EAST INDEPENDENCE IA 50644- (319)334-2780 Buchanan 9300601 0083691 6/30/2022 INDIAN RIDGE HOMEOWNERS ASSOCIATION INDIAN RIDGE HOMEOWNERS ASSOCIATION 177 ARROWHEAD DR. MELROSE IA 52569 (641)226-5178 Wayne 9133001 0027669 6/30/2024 INDIANOLA CITY OF STP (NORTH) CITY OF INDIANOLA CITY HALL PO BOX 299 INDIANOLA IA 50125 (515)961-9410 Warren 0375101 0059102 10/31/2022 INDUSTRIAL LAMINATES/NORPLEX INCORPORATED INDUSTRIAL DIELECTRICS, INC. 407 SOUTH 7TH STREET NOBLESVILLE IA 46060 (563)864-4232 Allamakee 3126123 0081591 4/30/2025 INTERSTATE BUILDING, LLLP GRONEN PROPERTIES, LLC 900 JACKSON ST, SUITE LL2 DUBUQUE IA 52001 (563)213-0013 Dubuque 6040001 0031232 12/31/2022 INWOOD CITY OF STP CITY OF INWOOD 103 S. MAIN P.O. BOX 298 INWOOD IA 51240 (712)753-4833 Lyon 5200401 0067083 11/13/2013 IO-DIS-E-CA CAMP IO-DIS-E-CA CORPORATION 3271 SANDY BEACH RD.NE SOLON IA 52333-9333 (319)848-4187 Johnson 1946001 0058777 4/30/2025 IONIA CITY OF STP CITY OF IONIA CITY HALL, P.O. BOX 142 IONIA IA 50645 (641)394-3856 Chickasaw 8222121 0079430 10/31/2024 IOWA AMERICAN WATER COMPANY EAST RIVER STATION IOWA AMERICAN WATER COMPANY 5201 GRAND AVENUE DAVENPORT IA 52807 Scott 2900900 0022144 1/31/2025 IOWA ARMY AMMUNITION PLANT US DEPT OF THE ARMY 17571 HIGHWAY 79 MIDDLETOWN IA 52638-5000 (319)753-7724 Des Moines 7700502 0075531 1/31/2024 IOWA ASSOCIATION OF MUNICIPAL UTILITIES IOWA ASSOCIATION OF MUNICIPAL ROBERT HAUG 1735 NE 70TH AVENUE ANKENY IA 50021 (515)289-1999 Polk 5200601 0066303 12/31/2025 IOWA CITY MOBILE HOME PARK IOWA CITY MHP, LLC PO BOX 457 CEDAREDGE CO 81413 (970)808-0800 Johnson 5225601 0063274 7/31/2021 IOWA CITY REGENCY MOBILE HOME PARK STP CHURCHILL GROUP LTD. ATTN: Steve Jundt 40 N. 4TH STREET CARBONDALE CO 81623 (970)963-2440 Johnson 5225000 0076082 12/31/2023 IOWA CITY WATER TREATMENT PLANT CITY OF IOWA CITY 410 EAST WASHINGTON STREET IOWA CITY IA 52240-1826 (319)356-5000 Johnson 5225002 0070866 4/30/2025 IOWA CITY, CITY OF (SOUTH) STP CITY OF IOWA CITY 410 E. WASHINGTON STREET IOWA CITY IA 52240-1826 (319)356-5010 Johnson 5225005 0078298 5/31/2024 IOWA CITY, CITY OF MS4 CITY OF IOWA CITY 410 E. WASHINGTON ST. IOWA CITY IA 52240 (319)356-5437 Johnson 4800904 0072206 9/30/2024 IOWA COUNTY SANITARY LANDFILL REGIONAL ENVIRONMENTAL IMPROVEMENTS COMM. 3369 HWY. 6 TRAIL HOMESTEAD IA 52236 Iowa 4800802 0080969 7/31/2024 IOWA COUNTY WATER TREATMENT FACILITY POWESHIEK WATER ASSOCIATION 125 INDUSTRIAL DRIVE P.O. BOX 504 BROOKLYN IA 52211- Iowa 0100903 0068756 5/28/2014 IOWA DOT REST AREA #01-I80 ADAIR IOWA DEPT. OF TRANSPORTATION 800 LINCOLN WAY AMES IA 50010 (515)239-1680 Adair 0100902 0068764 8/31/2019 IOWA DOT REST AREA #02 I80 ADAIR IOWA DEPT. OF TRANSPORTATION 800 LINCOLN WAY AMES IA 50010 (515)239-1680 Adair 4800903 0067598 3/31/2021 IOWA DOT REST AREA #06 I80 VICTOR IOWA DEPT. OF TRANSPORTATION 800 LINCOLN WAY AMES IA 50010 (515)239-1680 Iowa 8500902 0067555 7/31/2017 IOWA DOT REST AREA #19 I35 STORY CITY IOWA DEPT. OF TRANSPORTATION 800 LINCOLN WAY AMES IA 50010 (515)239-1680 Story 8500903 0067547 7/31/2017 IOWA DOT REST AREA #20 I35 STORY CITY IOWA DEPT. OF TRANSPORTATION 800 LINCOLN WAY AMES IA 50010 (515)239-1680 Story 7800903 0068896 1/31/2019 IOWA DOT REST AREA #23-I680 LOVELAND IOWA DEPT. OF TRANSPORTATION 800 LINCOLN WAY AMES IA 50010 (515)239-1680 Pottawattamie

27 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Owner Name Owner Address1 Owner Address2 Owner City Owner Owner Zip Owner Phone County State 7800904 0068900 12/31/2023 IOWA DOT REST AREA #24-I680 LOVELAND IOWA DEPT. OF TRANSPORTATION 800 LINCOLN WAY AMES IA 50010 (515)239-1680 Pottawattamie 7800905 0068918 4/30/2024 IOWA DOT REST AREA #29 & #30 I80 UNDERWOOD IOWA DEPT. OF TRANSPORTATION 800 LINCOLN WAY AMES IA 50010- (515)239-1680 Pottawattamie 2700902 0068934 8/31/2018 IOWA DOT REST AREA #34 I35 LAMONI IOWA DEPT. OF TRANSPORTATION 800 LINCON WAY AMES IA 50010 (515)239-1680 Decatur 3500904 0077321 3/31/2025 IOWA DOT REST AREA I35 DOWS (IRUA) IOWA REGIONAL UTILITIES ASSOCIATION 1351 IOWA SPEEDWAY DR. NEWTON IA 50208 (641)792-7011 Franklin 4260001 0023442 8/31/2025 IOWA FALLS CITY OF STP CITY OF IOWA FALLS 315 STEVENS STREET IOWA FALLS IA 50126 (641)648-2527 Hardin 5600118 0052166 2/28/2026 IOWA FERTILIZER COMPANY IOWA FERTILIZER COMPANY 3550 180TH ST WEVER IA 52658 (319)246-2308 Lee 3050901 0059765 8/31/2026 IOWA GREAT LAKES SANITARY DISTRICT STP IOWA GREAT LAKES SANITARY DISTRICT 303 28TH STREET MILFORD IA 51351 (712)338-2626 Dickinson 7455000 0081183 9/30/2025 IOWA LAKES REGIONAL WATER OSGOOD PLANT IOWA LAKES REGIONAL WATER 1301 38TH AVENUE WEST P.O. BOX 555 SPENCER IA 51301 (712)262-8847 Palo Alto 7727805 0052438 1/31/2026 IOWA LUTHERAN HOSPITAL UNITY POINT HEALTH 700 E University Ave. Des Moines IA 50309 (515)241-6353 Polk 7727806 0052446 1/31/2026 IOWA METHODIST MEDICAL CENTER UNITYPOINT HEALTH 700 E. UNIVERSITY AVENUE DES MOINES IA 50309 Polk 8670101 0000795 12/31/2019 IOWA PREMIUM, LLC IOWA PREMIUM, LLC 3337 L AVE PO BOX 238 TAMA IA 52339 (641)484-2220 Tama 0900106 0079693 10/31/2022 IOWA REGIONAL UTILITIES ASSOCIATION CENTRAL IOWA WATER ASSOCIATION 3801 IOWA SPEEDWAY DIRVE NEWTON IA 50208-8245 (641)792-7011 Bremer 8503004 0078174 1/31/2024 IOWA STATE UNIVERSITY MS4 IOWA STATE UNIVERSITY 1122 EH&S SERVICES BUILDING 2809 DALEY DR. AMES IA 50011-3660 (515)294-7676 Story 8503100 0032697 5/31/2023 IOWA STATE UNIVERSITY POWER PLANT IOWA STATE UNIVERSITY 1350 BEARDSHEAR AMES IA 50011 Story 2900101 0001783 4/30/2020 IPL - BURLINGTON GENERATING STATION INTERSTATE POWER AND LIGHT COMPANY 200 FIRST STREET SE P.O. BOX 351 CEDAR RAPIDS IA 52406-0351 Des Moines 0300100 0003735 5/31/2021 IPL - LANSING GENERATING STATION INTERSTATE POWER AND LIGHT COMPANY 200 FIRST STREET S.E. P. O. BOX 351 CEDAR RAPIDS IA 52406-0351 (563)538-3118 Allamakee 9000101 0060909 4/30/2023 IPL - OTTUMWA GENERATING STATION INTERSTATE POWER AND LIGHT COMPANY 200 FIRST STREET SE PO BOX 351 CEDAR RAPIDS IA 52406-0351 (641)935-2901 Wapello 5715108 0000540 10/31/2021 IPL - PRAIRIE CREEK GENERATING STATION INTERSTATE POWER AND LIGHT COMPANY (IPL) 200 FIRST STREET SE CEDAR RAPIDS IA 52406-0351 Linn 8447001 0027961 9/30/2023 IRETON CITY OF STP CITY OF IRETON 316 MAIN STREET IRETON IA 51027 (712)278-2112 Sioux 8340001 0021024 10/31/2021 IRWIN CITY OF STP CITY OF IRWIN CITY HALL PO BOX 7 IRWIN IA 51446-0007 (712)782-3137 Shelby 0800108 0082732 8/31/2025 ISU BIOCENTURY RESEARCH FARM - LAOP IOWA STATE UNIVERSITY 1327 U AVE BOONE IA 50036 (515)296-6039 Boone 1556301 0078476 2/29/2024 J. W. Freund Farms, Inc. John Freund 63200 - 570th Street Lewis IA 51544 (712)769-2313 Cass 1456478 0080292 4/30/2022 James Pudenz Inc James Pudenz Inc 1404 E Ivy Ave. Breda IA 51436 (712)830-2744 Carroll 0732001 0026506 12/31/2021 JANESVILLE CITY OF STP CITY OF JANESVILLE CITY HALL, P.O. BOX 146 JANESVILLE IA 50647 (319)987-2905 Black Hawk 5000706 0076848 2/28/2025 JASPER COUNTY REGIONAL WASTEWATER SYSTEM IOWA REGIONAL UTILITIES ASSOCIATION 1351 IOWA SPEEDWAY DR. NEWTON IA 50208 (641)792-7011 Jasper 4000701 0079898 1/31/2025 JAY BROS INC. JAY BROS INC. 3065 220TH ST. WILLIAMS IA 50271 (515)854-9165 Hamilton 9083101 0060569 10/31/2021 JBS PORK SWIFT PORK COMPANY D/B/A JBS PORK 1770 PROMONTORY CIRCLE GREELEY CO 80634 (970)506-8393 Wapello 1556742 0080306 8/31/2021 JDH, Inc. Feedlot Joe Hoye JDH, Inc. Feedlot 64919 Yankton Rd. Villisca IA 50864 (712)249-2076 Cass 9778151 0079944 12/31/2025 JEBRO, INCORPORATED JEBRO, INCORPORATED 2303 BRIDGEPORT DRIVE SIOUX CITY IA 51111- (712)277-8855 Woodbury 6056976 0082091 1/31/2025 JEFF GROENEWEG FEEDLOT Jeff Groeneweg 1983 240TH STREET INWOOD IA 51240 (712)470-4365 Lyon 3742001 0021300 10/31/2025 JEFFERSON CITY OF STP CITY OF JEFFERSON 220 N CHESTNUT JEFFERSON IA 50129-1900 (515)386-3111 Greene 1044002 0075302 5/31/2024 JESUP, CITY OF STP (SOUTH) CITY OF JESUP CITY CLERK, CITY HALL PO BOX 592 JESUP IA 50648-0592 (319)827-1522 Buchanan 4027001 0024422 12/31/2022 JEWELL CITY OF STP CITY OF JEWELL CITY HALL, P.O. BOX 486 JEWELL IA 50130-0486 (515)827-5425 Hamilton 8461290 0077879 9/30/2025 JGM Feedlot LLC Joel VanderWaal 4163 Hickory Ave. Sioux Center IA 51250 (712)722-0169 Sioux 8222107 0059501 12/31/2025 JOHN DEERE DAVENPORT WORKS DEERE & COMPANY ONE JOHN DEERE PLACE MOLINE IL 61265- Scott 3126107 0000051 8/31/2019 JOHN DEERE DUBUQUE WORKS JOHN DEERE DUBUQUE WORKS ONE JOHN DEERE PLACE MOLINE IL 61265- Dubuque 0790107 0059439 6/30/2021 JOHN DEERE ENGINE WORKS DEERE & COMPANY 1 JOHN DEERE PLACE MOLINE IL 61265 (319)292-5207 Black Hawk 0790116 0069485 11/30/2023 JOHN DEERE FOUNDRY WATERLOO DEERE AND COMPANY 1 JOHN DEERE PLACE MOLINE IL 61265- Black Hawk 0790102 0062481 5/31/2024 JOHN DEERE PRODUCT ENGINEERING CENTER DEERE & COMPANY 1 JOHN DEERE PLACE MOLINE IL 61265- Black Hawk 0790103 0000060 11/30/2023 JOHN DEERE WATERLOO WORKS DEERE AND COMPANY 1 JOHN DEERE PLACE MOLIINE IL 61265-8098 Black Hawk 6056833 0079685 7/31/2021 John Fluit Jr., Beef Open Feedlot John Fluit, Jr. 1948 240th St. Inwood IA 51240 (712)470-1005 Lyon 9433000 0078441 4/30/2020 JOHN W. PRAY WATER FACILITY CITY OF FORT DODGE 819 1ST AVE S FORT DODGE IA 50501 (515)576-4551 Webster 7740002 0078212 4/30/2024 JOHNSTON, CITY OF MS4 CITY OF JOHNSTON CITY OF JOHNSTON 6221 MERLE HAY ROAD JOHNSTON IA 50131- (515)278-2033 Polk 9835001 0052077 8/31/2020 JOICE, CITY OF STP JOICE, CITY OF 201 MAIN STREET JOICE IA 50446 Worth 6066585 0053042 6/30/2024 Jon Van Ginkel Feedlot Jon Van Ginkel 1919 260th Street Inwood IA 51240 (712)470-6696 Lyon 1456269 0081337 6/30/2023 JOSH PUDENZ Josh Pudenz 13095 Olympic Ave Carroll IA 51401 (712)210-4937 Carroll 6059150 0084131 8/31/2023 JRT Focus Farms Ltd, Site 1 Roger Knoblock JRT Focus Farms Ltd. 2596 180th Street Rock Rapids IA 51246 (712)261-0636 Lyon 8460404 0077577 10/31/2021 K & D Feedyards, LLC K & D Feedyards, LLC 1275 7th Ave. NE Sioux Center IA 51250 (712)441-7205 Sioux 7000113 0052387 10/31/2025 K.A. STEEL CHEMICALS D/B/A OLIN CHLOR ALKALI PRODUCTS & VINYLS OLIN CHLOR ALKALI PRODUCTS AND VINYLS 1001 W 31ST ST., STE 200 DOWNERS GROVE IL 60515 (630)243-2296 Muscatine 9233001 0059196 1/31/2019 KALONA CITY OF STP CITY OF KALONA P.O. BOX 1213 511 C AVENUE KALONA IA 52247-1213 (319)656-2310 Washington 5200116 0052476 6/30/2021 KALONA CREAMERY, LLC KALONA CREAMERY, LLC 1014 540TH STREET SW WELLMAN IA 52356 Johnson 4033001 0069124 1/31/2023 KAMRAR CITY OF STP CITY OF KAMRAR CITY HALL, PO BOX 77 KAMRAR IA 50132-0077 (515)539-4228 Hamilton 4150001 0026000 4/30/2026 KANAWHA CITY OF STP CITY OF KANAWHA PO BOX 100 KANAWHA IA 50447-0100 (641)762-3632 Hancock 8463595 0080438 7/31/2022 Kekerix Kattle Co. Scott & Erika Van Kekerix 1943 300th Street Rock Valley IA 51247 (712)476-2404 Sioux 7561752 0080179 4/30/2022 Kellen Feedlot D.J. Kellen Kellen Feedlot 23657 Marble Ave. LeMars IA 51031 (712)546-1508 Plymouth 8040001 0061760 7/31/2021 KELLERTON CITY OF STP CITY OF KELLERTON CITY HALL PO BOX 40 KELLERTON IA 50133-0040 (641)783-2321 Ringgold 5038001 0043541 5/31/2025 KELLOGG CITY OF STP CITY OF KELLOGG CITY HALL, PO BOX 45 KELLOGG IA 50135-0045 (641)526-3403 Jasper 4566247 0083062 7/31/2025 Kenneth Moellers - Hayek Farm Kenneth Moellers 11687 Yankee Ave. Cresco IA 52136 (641)330-7977 Howard 9840001 0076635 8/31/2016 KENSETT, CITY OF-STP CITY OF KENSETT PO Box 95, 207 5th Street KENSETT IA 50448-0095 (641)845-2388 Worth 5625110 0077143 7/31/2020 KENSINGTON FORT MADISON, LLC AGEMARK CORPORATION 25 AVENIDA DE ORINDA ORINDA CA 94563 Lee 5640001 0042609 8/31/2023 KEOKUK CITY OF STP CITY OF KEOKUK CITY HALL, P.O. BOX 400 KEOKUK IA 52632- (319)524-2050 Lee 6245001 0062073 10/31/2024 KEOMAH VILLAGE CITY OF STP CITY OF KEOMAH VILLAGE CITY HALL 399 KEOMAH VILLAGE OSKALOOSA IA 52577-9801 (641)673-5292 Mahaska 8938001 0023361 4/30/2025 KEOSAUQUA CITY OF STP CITY OF KEOSAUQUA CITY HALL P.O. BOX 555 KEOSAUQUA IA 52565-0555 (319)293-3536 Van Buren 5440001 0035998 11/30/2023 KEOTA CITY OF STP CITY OF KEOTA CITY HALL, PO BOX 77 KEOTA IA 52248-0077 (641)636-2266 Keokuk 0398103 0080870 5/31/2022 KERNDT BROTHERS SAVINGS BANK KERNDT BROTHERS SAVINGS BANK PO BOX 370 LANSING IA 52151 (563)568-5234 Allamakee 5442001 0079910 5/31/2022 KESWICK, CITY OF STP REGIONAL UTILITY SERVICE SYSTEMS 1501 W. WASHINGTON ST., STE. 103 MT. PLEASANT IA 52641 (319)752-6395 Keokuk 3126201 0084255 11/30/2025 KEY CITY PLATING RICHARD CONLON KEY CITY PLATING 2500 KERPER BLVD DUBUQUE IA 52001 (563)583-6811 Dubuque 0640001 0025984 3/31/2024 KEYSTONE CITY OF STP CITY OF KEYSTONE CITY HALL, PO BOX 215 KEYSTONE IA 52249-0215 (319)442-3246 Benton 5715112 0002437 5/31/2022 KILBORN, INC. DIGITAL PRINT ENTERPRISES LLC P.O. BOX 510802 ST. LOUIS MO 63151- Linn 0543001 0025372 12/31/2022 KIMBALLTON CITY OF STP CITY OF KIMBALLTON PO BOX 79 KIMBALLTON IA 51543 (712)773-3003 Audubon 5715119 0069523 12/2/2024 KING'S MATERIAL, INC.-WASHOUT FACILITY - LAOP DAKOTA RED CORP 650 12TH AVE SW CEDAR RAPIDS IA 52404 (319)862-2444 Linn 7537001 0023400 5/31/2024 KINGSLEY CITY OF STP CITY OF KINGSLEY CITY CLERK, CITY HALL 222 MAIN ST, PO BOX 309 KINGSLEY IA 51028-0309 (712)378-3601 Plymouth 5444001 0077186 7/31/2022 KINROSS, CITY OF STP (RUSS) REGIONAL UTILITY SERVICE SYSTEMS 901 N. 8TH STREET FAIRFIELD IA 52556 (641)209-1011 Keokuk 4800104 0076881 4/30/2022 KINZE MANUFACTURING, INC. KINZE MANUFACTURING, INC. 2172 M AVENUE P.O. BOX 806 WILLIAMSBURG IA 52361-0806 (319)668-1300 Iowa 8466255 0083151 5/31/2026 Kirk Den Herder Feedlot Kirk Den Herder 3367 420th Street ORANGE CITY IA 51041 (712)441-1562 Sioux 9069001 0074667 3/31/2022 KIRKVILLE, CITY OF WAPELLO RURAL WATER ASSOCIATION P.O.BOX 538 OTTUMWA IA 52501 (641)682-8351 Wapello 2432001 0020818 8/31/2024 KIRON CITY OF STP CITY OF KIRON CITY OF KIRON 8 W 2ND STREET PO BOX 510 KIRON IA 51448-0215 (712)675-4700 Crawford 4155001 0038466 8/31/2022 KLEMME CITY OF STP CITY OF KLEMME 204 EAST MAIN STREET PO BOX 282 KLEMME IA 50449- (641)587-2018 Hancock 3100602 0071811 9/30/2022 KNAPP MOBILE HOME PARK-STP DON & LOIS KNAPP 12486 BARONY DRIVE DUBUQUE IA 52001- (319)582-7466 Dubuque 1340000 0084379 10/31/2022 KNIERIM, CITY OF WTP KNIERIM, CITY OF WTP 232 WILLIAMS KNIERIM IA 50552 (515)469-2242 Calhoun 6342001 0035866 7/31/2025 KNOXVILLE CITY OF STP CITY OF KNOXVILLE CITY HALL 305 S. THIRD KNOXVILLE IA 50138 (641)828-0587 Marion 9400121 0053000 7/31/2024 KOCH FERTILIZER FORT DODGE NITROGEN PLANT - LAOP KOCH FERTILIZER FT. DODGE, LLC 3126 200TH ST., P.O. BOX 1234 FORT DODGE IA 50501 (515)543-4365 Webster 9400100 0000302 7/31/2024 KOCH FERTILIZER FT. DODGE, LLC KOCH FERTILIZER FT. DODGE, LLC P.O. BOX 1234 FORT DODGE IA 50501-1234 (515)543-4365 Webster 6400112 0075591 9/5/2005 KOCH NITROGEN COMPANY, LLC KOCH NITROGEN COMPANY, LLC 4111 EAST 37TH STREET NORTH P.O. BOX 2219 WICHITA KS 67201-2219 (316)828-5500 Marshall 8466384 0083852 5/31/2023 Kooima Custom Feed Doug & Grant Kooima 3210 Eagle Ave Rock Valley IA 51247 (712)470-6601 Sioux 7048102 0001741 5/31/2025 KRAFTHEINZ COMPANY, L.P. H.J. HEINZ COMPANY, L.P. 1357 ISETT AVENUE MUSCATINE IA 52761 Muscatine 7900714 0067458 4/30/2026 KWIK STAR #303 KWIK TRIP, INC. 1626 OAK STREET P.O. BOX 2107 LA CROSSE WI 54603- (608)793-6283 Poweshiek 4945001 0056707 12/31/2025 LA MOTTE CITY OF STP CITY OF LA MOTTE 102 SOUTH MAIN STREET LA MOTTE IA 52054-0056 (563)773-2260 Jackson 0743001 0035963 1/31/2022 LA PORTE CITY, CITY OF STP CITY OF LAPORTE CITY 202 MAIN STREET LAPORTE CITY IA 50651-1234 (319)342-3396 Black Hawk

28 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Owner Name Owner Address1 Owner Address2 Owner City Owner Owner Zip Owner Phone County State 9138001 0022021 6/30/2016 LACONA CITY OF STP CITY OF LACONA CITY HALL, PO BOX 148 LACONA IA 50139 (515)534-3904 Warren 4840001 0058521 8/31/2023 LADORA CITY OF STP CITY OF LADORA PO BOX 169 LADORA IA 52251 (319)623-8741 Iowa 1345003 0020842 7/31/2023 LAKE CITY CITY OF STP CITY OF LAKE CITY CITY HALL, 105 N CENTER LAKE CITY IA 51449- (712)464-3111 Calhoun 9900900 0066401 7/31/2022 LAKE CORNELIA SANITARY DISTRICT LAKE CORNELIA SANITARY DISTRICT 1860 O'BRIEN AVENUE CLARION IA 50525 (515)532-3346 Wright 9200403 0080853 1/31/2024 LAKE DARLING YOUTH CENTER CAMP LAKE DARLING YOUTH CENTER CAMP 3170 DOGWOOD AVENUE BRIGHTON IA 52540- (319)694-3229 Washington 9545001 0027448 2/28/2022 LAKE MILLS CITY OF STP CITY OF LAKE MILLS 200 N 1ST AVE. W LAKE MILLS IA 50450 (515)592-2441 Winnebago 3900800 0084212 12/31/2022 LAKE PANORAMA ASSOCIATION WTP LAKE PANORAMA ASSOCIATION 5006 PANORAMA DRIVE PANORA IA 50216- (641)755-2301 Guthrie 3045001 0036919 12/31/2022 LAKE PARK CITY OF STP CITY OF LAKE PARK PO BOX 536 LAKE PARK IA 51347 (712)832-3527 Dickinson 6300907 0083402 5/31/2016 LAKE RED ROCK - WHITEBREAST SEWAGE LAGOON US ARMY CORPS OF ENGINEERS, RO MAJ PHIL VALENTI CLOCK TOWER BUILDING PO BOX 2004 ROCK ISLAND IL 61204- (309)794-5270 Marion 5200316 0074284 10/31/2024 LAKE RIDGE, INC.- STP LAKE RIDGE, INC. 110 HUMMINGBIRD LANE IOWA CITY IA 52245 (319)466-9071 Johnson 8127001 0041998 4/30/2026 LAKE VIEW CITY OF STP CITY OF LAKE VIEW 305 MAIN ST PO BOX 18 LAKE VIEW IA 51450-0018 (712)657-2634 Sac 3087102 0053299 2/17/2023 LAKESIDE AVE. INFRASTRUCTURE IMPROVEMENTS CITY OF WAHPETON 1201 DAKOTA DR. WAHPETON IA 51351 Dickinson 8200605 0064718 5/31/2026 LAKESIDE MANOR MOBILE HOME COMMUNITY YES LAKESIDE MANOR, LLC 1900 16TH ST., SUITE 950 DENVER CO 80202 (303)468-4517 Scott 8461089 0077704 3/31/2023 Laketon Cattle Company (Formerly Performance Beef) West Edge Land & Cattle LLC 588 3-Mile Road NW, Suite 203 Grand Rapids MI 49544 (231)878-3687 Sioux 5200304 0061514 8/1/2006 LAKEVIEW KNOLLS LAKEVIEW KNOLLS HOMEOWNERS ASSOC. 2762 LAKEVIEW DRIVE N.E. SOLON IA 52333 (319)788-4064 Johnson 8200602 0067695 3/31/2022 LAKEWOOD ESTATES MOBILE HOME PARK YES COMMUNITIES! C/O WALTER MORELAND 2401 15TH ST., #350 DENVER CO 80202 Scott 5200327 0081426 3/31/2026 LAKEWOODS DEVELOPMENT SUB./BOWERSOX ADDITION SUB. LAKEWOODS SEWER ASSOCIATION 1 SPRING RIDGE COURT NE SWISHER IA 52338 (319)329-2167 Johnson 5540001 0078697 10/31/2023 LAKOTA CITY OF STP CITY OF LAKOTA CITY HALL, P.O. BOX 194 LAKOTA IA 50451 (515)886-2312 Kossuth 2740001 0036102 8/31/2022 LAMONI CITY OF STP LAMONI MUNICIPAL UTILITIES 111 S CHESTNUT ST LAMONI IA 50140 (641)784-6911 Decatur 1051001 0025348 7/31/2022 LAMONT CITY OF STP CITY OF LAMONT CITY HALL, P.O. BOX 240 LAMONT IA 50650-0240 (563)924-2194 Buchanan 8465430 0053261 11/30/2025 Lance Rus Lance Rus 2131 280th Street Rock Valley IA 51247 (712)470-3609 Sioux 1449001 0062162 11/30/2021 LANESBORO CITY OF STP CITY OF LANESBORO CITY HALL, P.O. BOX 104 LANESBORO IA 51451-0104 (712)656-2292 Carroll 0345001 0024597 3/31/2022 LANSING CITY OF STP CITY OF LANSING 201 JOHN ST P.O. BOX 470 LANSING IA 52151-0470 (563)538-4757 Allamakee 6000112 0052919 1/31/2024 LARCHWOOD 1447 LLC LARCHWOOD 1447 LLC 9165 SILVERWOOD CT. GRANITE BAY CA 95746 (916)752-7592 Lyon 6050001 0047333 4/30/2022 LARCHWOOD CITY OF STP CITY OF LARCHWOOD CITY HALL, P.O. BOX 216 LARCHWOOD IA 51241-0216 (712)477-2366 Lyon 1833001 0024589 11/30/2015 LARRABEE CITY OF STP CITY OF LARRABEE CITY HALL P.O. BOX 122 LARRABEE IA 51029 (712)225-5868 Cherokee 9756513 0082619 3/31/2025 Larry Guthridge Combined Operation Larry Guthridge 2871 110th Street Kingsley IA 51028 (712)870-1920 Woodbury 3554001 0062944 9/30/2016 LATIMER-COULTER CITY OF STP CITY OF LATIMER-COULTER PO BOX 744 108 S. AKIR STREET LATIMER IA 50452-0744 (641)579-6452 Franklin 6452001 0072214 8/31/2024 LAUREL, CITY OF STP City of Laurel City Hall, PO Box 126 Laurel IA 50141-0126 (641)476-3226 Marshall 7614001 0025950 8/31/2026 LAURENS CITY OF STP CITY OF LAURENS 272 N THIRD ST LAURENS IA 50554 (712)841-4610 Pocahontas 7614000 0082473 12/31/2024 LAURENS, CITY OF WTP LAURENS, CITY OF WTP 272 N. 3RD LAURENS IA 50554 (712)841-4526 Pocahontas 0556260 0080080 12/31/2021 Lauritsen Cattle Company Scott Lauritsen 3015 HYW 71 Exira IA 50076 (712)268-5472 Audubon 1957001 0056910 8/31/2016 LAWLER CITY OF STP LAWLER CITY OF STP P.O. BOX 215 LAWLER IA 52154- (563)238-3614 Chickasaw 9743001 0043168 4/30/2024 LAWTON CITY OF STP CITY OF LAWTON CITY HALL PO BOX 275 LAWTON IA 51030-0275 (712)944-5960 Woodbury 7540001 0036536 11/30/2023 LE MARS CITY OF STP CITY OF LE MARS CITY HALL 40 CENTRAL AVE SE LE MARS IA 51031-1130 (712)546-7018 Plymouth 8245002 0022012 7/31/2023 LECLAIRE CITY OF STP CITY OF LECLAIRE 325 WISCONSIN ST LECLAIRE IA 52753-0605 (563)289-9027 Scott 8245003 0078824 11/30/2024 LECLAIRE, CITY OF MS4 LECLAIRE, CITY OF 425 N. THIRD ST. P.O. BOX 605 LECLAIRE IA 52753 (563)289-4242 Scott 8657001 0027235 9/30/2025 LEGRAND CITY OF STP CITY OF LEGRAND 104 W MAIN STREET PO BOX 430 LEGRAND IA 50142-0430 (641)479-2464 Tama 1750113 0072907 8/31/2024 LEHIGH CEMENT COMPANY LLC LEHIGH CEMENT COMPANY LLC 700 25TH STREET N.W. MASON CITY IA 50401 Cerro Gordo 1700100 0001945 9/17/2005 LEHIGH CEMENT COMPANY LLC LEHIGH CEMENT COMPANY LLC 7660 IMPERIAL WAY ALLENTOWN PA 18195 Cerro Gordo 9453001 0021296 3/31/2016 LEHIGH CITY OF STP CITY OF LEHIGH 241 ELM STREET LEHIGH IA 50557 (515)359-2311 Webster 6259001 0080501 7/31/2024 LEIGHTON, CITY OF STP MAHASKA RURAL WATER SYSTEMS, INC. PO BOX 210 OSKALOOSA IA 52577-0210 (641)673-8851 Mahaska 4900401 0079766 9/30/2021 LEISURE LAKE, COMMUNITY OF EASTERN IOWA REGIONAL UTILITY SERVICES SYSTEM 7600 COMMERCE PARK DUBUQUE IA 52002-9673 (563)556-4166 Jackson 9549001 0036528 12/31/2022 LELAND CITY OF STP CITY OF LELAND CITY HALL, P.O. BOX 127 LELAND IA 50453-0127 (641)567-3330 Winnebago 8748001 0027995 7/31/2025 LENOX CITY OF STP CITY OF LENOX PO BOX 40 LENOX IA 50851-0040 (641)333-2228 Taylor 2742001 0027871 10/31/2024 LEON CITY OF STP CITY OF LEON 104 WEST 1ST STREET LEON IA 50144-0210 (641)446-6221 Decatur 2742000 0081787 6/30/2018 LEON WATER TREATMENT PLANT CITY OF LEON 104 WEST 1ST STREET LEON IA 50144 (641)446-6344 Decatur 8459032 0083895 11/30/2023 Les Ranschau - Ranschau Enterprises Les Ranschau 3567 350th Street Rock Valley IA 51247 (712)470-2521 Sioux 6055001 0026620 2/28/2017 LESTER CITY OF STP CITY OF LESTER CITY HALL P.O. BOX 35 LESTER IA 51242- (712)478-4411 Lyon 5847001 0061492 4/30/2016 LETTS CITY OF STP CITY OF LETTS P.O. BOX E LETTS IA 52754-0150 (563)571-4627 Louisa 1535001 0057487 5/31/2020 LEWIS CITY OF STP CITY OF LEWIS CITY HALL 416 MAIN STREET, PO BOX 66 LEWIS IA 51544-0066 (712)769-2216 Cass 9144301 0080152 5/31/2023 LIBERTY CENTER CITY OF (WARREN CO. BOARD OF SUPERVISORS) WARREN COUNTY BOARD OF SUPERVISORS 301 N BUXTON, SUITE 214 INDIANOLA IA 50125-1801 (515)961-1065 Warren 5148001 0062821 6/30/2016 LIBERTYVILLE CITY OF STP CITY OF LIBERTYVILLE 108 N MAIN PO BOX 225 LIBERTYVILLE IA 52567 (641)693-3271 Jefferson 1453001 0056855 12/31/2022 LIDDERDALE CITY OF STP CITY OF LIDDERDALE CITY HALL, PO BOX 126 LIDDERDALE IA 51452-0126 (712)822-5297 Carroll 2000300 0068403 11/30/2022 LIFT, L.L.C. LIFT, L.L.C. C/O AMERICANA LEADERSHIP COLLEGE, INC. P.O.BOX 428 OSCEOLA IA 50213 (641)342-4517 Clarke 4500802 0052031 4/30/2020 LIME SPRINGS BEEF, LLC (NOW UPPER IOWA BEEF, LLC) LIME SPRINGS BEEF, LLC 4614 US HWY 63 PO BOX 27 LIME SPRINGS IA 52155 Howard 4535001 0043494 9/30/2023 LIME SPRINGS CITY OF STP CITY OF LIME SPRINGS CITY HALL, P.O. BOX 296 LIME SPRINGS IA 52155-0296 (563)566-4405 Howard 8562100 0079375 9/30/2024 LINCOLNWAY ENERGY, LLC LINCOLNWAY ENERGY, LLC 59511 W LINCOLN HWY NEVADA IA 50201 (515)817-0156 Story 3944001 0081973 5/31/2023 LINDEN CITY OF STP CITY OF LINDEN CITY HALL, P.O. BOX 46 LINDEN IA 50146-0046 (641)774-9005 Guthrie 9352001 0071897 11/30/2017 LINEVILLE CITY OF STP CITY OF LINEVILLE CITY HALL, P.O. BOX 180 LINEVILLE IA 50147-0180 (641)876-6875 Wayne 1147001 0042897 4/30/2022 LINN GROVE CITY OF STP CITY OF LINN GROVE PO BOX 64 LINN GROVE IA 51033 (712)296-0918 Buena Vista 9200601 0068560 12/13/2012 LINN HOLLOW MOBILE HOME PARK AJ LEMAN LINN HOLLOW MOBILE HOME PARK, LLC 230 S 7TH AVE. IOWA CITY IA 52245 (319)325-1044 Washington 5748001 0025909 4/30/2025 LISBON CITY OF STP CITY OF LISBON PO BOX 68 LISBON IA 52253-0068 (319)455-2459 Linn 6462001 0056847 7/31/2022 LISCOMB CITY OF STP CITY OF LISCOMB CITY HALL, P.O. BOX 60 LISCOMB IA 50148-0060 (641)496-5419 Marshall 6060001 0025356 12/31/2021 LITTLE ROCK CITY OF STP CITY OF LITTLE ROCK CITY HALL 402 MAIN ST LITTLE ROCK IA 51243 (712)479-2852 Lyon 1800112 0077275 4/30/2025 LITTLE SIOUX CORN PROCESSORS, LLC LITTLE SIOUX CORN PROCESSORS, LLC 4808 F AVE MARCUS IA 51035 (712)376-2800 Cherokee 4333001 0080276 4/30/2019 LITTLE SIOUX/RIVER SIOUX STP HARRISON COUNTY BOARD OF SUPERVISORS 111 NORTH 2ND AVENUE LOGAN IA 51546- (712)644-2401 Harrison 4647001 0023566 4/30/2023 LIVERMORE CITY OF STP CITY OF LIVERMORE P.O. BOX 16 LIVERMORE IA 50558-0016 (515)379-1074 Humboldt 5157001 0072729 8/31/2018 LOCKRIDGE CITY OF STP CITY OF LOCKRIDGE 104 W MAIN PO BOX 113 LOCKRIDGE IA 52635 (319)696-3311 Jefferson 4337001 0058599 7/12/2006 LOGAN CITY OF STP CITY OF LOGAN 108 W 4TH STREET PO BOX 127 LOGAN IA 51546-0127 (712)644-2425 Harrison 1389002 0084280 7/31/2023 LOHRVILLE, CITY OF STP CITY OF LOHRVILLE PO BOX 257 LOHRVILLE IA 51453 (712)465-2595 Calhoun 5547001 0082341 2/28/2025 LONE ROCK, CITY OF STP CITY OF LONE ROCK PO BOX 109 LONE ROCK IA 50559 (515)925-3240 Kossuth 5240001 0060330 4/30/2020 LONE TREE CITY OF STP (SOUTH) CITY OF LONE TREE PO BOX 337 123 N DEVOE STREET LONE TREE IA 52755-0337 (319)629-4615 Johnson 8251001 0022292 7/31/2022 LONG GROVE CITY OF STP CITY OF LONG GROVE CITY CLERK, CITY HALL P.O. BOX 210 LONG GROVE IA 52756 (563)285-4904 Scott 5200323 0080730 4/30/2024 LONGVIEW ESTATES HOA LONGVIEW ESTATES HOA PO BOX 743 NORTH LIBERTY IA 52317-0743 (319)631-5043 Johnson 3126503 0081833 3/31/2024 LORAS COLLEGE LORAS COLLEGE 1450 ALTA VISTA DUBUQUE IA 52001- (563)588-7011 Dubuque 3100601 0063983 6/30/2018 LORE MOBILE HOME PARK STP GREG WILLIAMS 21732 BUSINESS HWY 151 MONTICELLO IA 52310 (319)480-0661 Dubuque 8834001 0062910 9/30/2020 LORIMOR CITY OF STP CITY OF LORIMOR 503 MAIN STREET P.O. BOX 125 LORIMOR IA 50149-0125 (641)763-2297 Union 3100608 0063827 7/30/2007 LOST CANYON MOBILE HOME PARK JOHN SIBLEY 12724 PINE VIEW DRIVE PEOSTA IA 52068 (563)588-1375 Dubuque 2346001 0036544 5/31/2022 LOST NATION CITY OF STP CITY OF LOST NATION CITY CLERK, CITY HALL P.O. BOX 67 LOST NATION IA 52254 (563)678-2114 Clinton 3700105 0082066 4/30/2024 LOUIS DREYFUS COMPANY, GRAND JUNCTION, LLC LOUIS DREYFUS COMPANY, LLC 40 DANBURY RD WILTON CT 06897 Greene 5800901 0066117 6/24/2006 LOUISA CO. LAW ENFORCEMENT CENTER LOUISA COUNTY BOARD OF SUPERVISORS LOUISA COUNTY COURTHOUSE WAPELLO IA 52653 (319)523-3371 Louisa 2500904 0079669 10/31/2024 LOUISE P. MOON ASR FACILITY DES MOINES WATER WORKS 2201 GEORGE FLAGG PARKWAY DES MOINES IA 50321-1190 (515)283-8700 Dallas 7720201 0068438 3/31/2024 LOVE'S TRAVEL SHOP 411 LOVE'S TRAVEL STOPS & COUNTRY STORES, INC. PO BOX 26210 OKLAHOMA CITY OK 73126- (405)302-6640 Polk 6858001 0027430 7/31/2023 LOVILIA CITY OF STP CITY OF LOVILIA P.O. BOX 145 LOVILIA IA 50150-0145 (641)946-7711 Monroe 1656001 0047899 4/30/2022 LOWDEN CITY OF STP CITY OF LOWDEN PO BOX 310 LOWDEN IA 52255 (563)941-7705 Cedar 5551001 0082571 2/28/2023 LU VERNE, CITY OF STP IOWA LAKES REGIONAL WATER 1301 38TH AVENUE WEST SPENCER IA 51301- (712)262-8847 Kossuth 2254001 0027685 7/31/2021 LUANA CITY OF STP CITY OF LUANA CITY HALL, P.O. BOX 96 LUANA IA 52156-0096 (563)539-2296 Clayton 5915001 0072621 8/31/2022 LUCAS CITY OF STP (RATHBUN REGIONAL WATER ASSOCIATION) RATHBUN REGIONAL WATER ASSOCIATION 16166 HWY J29 CENTERVILLE IA 52544-8307 (641)647-2416 Lucas

29 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Owner Name Owner Address1 Owner Address2 Owner City Owner Owner Zip Owner Phone County State 3158001 0074781 11/30/2024 LUXEMBURG, CITY OF-STP CITY OF LUXEMBURG 202 S ANDRES STREET PO BOX 19 LUXEMBURG IA 52056-0019 (563)853-4615 Dubuque 7861300 0077691 2/28/2023 LV Feedlot, LLC Garrett Muhlbauer (LV Feedlots) 47622 Dogwood Road Oakland IA 51560 (712)789-9565 Pottawattamie 6200904 0074659 3/31/2022 LYNNDANA SEWER DISTRICT MAHASKA RURAL WATER SYSTEM, INC. PO BOX 210 OSKALOOSA IA 52577 (641)673-8851 Mahaska 5047001 0041971 11/30/2018 LYNNVILLE CITY OF STP CITY OF LYNNVILLE CITY HALL, P.O. BOX 115 LYNNVILLE IA 50153-0115 (641)527-2535 Jasper 8400700 0080535 6/14/2014 LYON & SIOUX RWS BOYDEN SUBSYTEM WTP LYON & SIOUX RURAL WATER SYSTEM 1107 IST AVENUE ROCK RAPIDS IA 51246- (712)472-3755 Sioux 8133001 0020940 4/30/2022 LYTTON CITY OF STP CITY OF LYTTON City Hall, PO Box 125 Lytton IA 50561-0125 (712)466-2270 Sac 4100105 0004791 3/31/2026 M.G. WALDBAUM COMPANY - LAOP MICHAEL FOODS, INC. 301 CARLSON PKWY, STE 400 MINNETONKA MN 55305 (952)258-4000 Hancock 8457177 0082449 5/31/2025 Maassen & Sons Combined Facility Leroy Maassen Maassen & Sons Combined Facility 4733 Hickory Ave. Maurice IA 51036 (712)441-0467 Sioux 5200906 0073580 4/30/2022 MACBRIDE SANITARY SEWER DISTRICT MACBRIDE SANITARY SEWER DISTRICT PO BOX 623 SOLON IA 52333 (319)331-0889 Johnson 7841001 0042919 8/31/2021 MACEDONIA CITY OF STP CITY OF MACEDONIA CITY HALL, P.O. BOX 33 MACEDONIA IA 51549-0033 (712)486-2323 Pottawattamie 6134001 0079928 8/31/2024 MACKSBURG, CITY OF STP SOUTHERN IOWA RURAL WATER ASSOCIATION C/O Matt Schultz, Operations Manager 1391 190TH STREET CRESTON IA 50801-8233 (641)782-5744 Madison 0848001 0028207 8/31/2026 MADRID CITY OF STP CITY OF MADRID CITY CLERK, CITY HALL 304 S WATER STREET MADRID IA 50156 (515)795-3930 Boone 7727126 0064076 3/31/2016 MAGELLAN PIPELINE COMPANY, L.P. MAGELLAN PIPELINE COMPANY, L.P. ONE WILLIAMS CENTER PO BOX 22186 TULSA OK 74172- (515)276-0547 Polk 0000115 0076775 7/17/2022 MAGELLAN PIPELINE COMPANY, L.P. - BLANKET PERMIT MAGELLAN MIDSTREAM PARTNERS, L.P. 2503 SE 43RD ST. Des Moines IA 50327 (515)261-6625 Polk 1700122 0074411 1/16/2007 MAGELLAN PIPELINE COMPANY, LP MAGELLAN PIPELINE COMPANY 2650 106TH STREET, SUITE 105 URBANDALE IA 50322- (515)265-2111 Cerro Gordo 5159001 0078417 11/22/2009 MAHARISHI VEDIC CITY MAHARISHI VEDIC CITY 1750 MAHARISHI CENTER AVE. MAHARISHI VEDIC CITY IA 52556 (641)470-7000 Jefferson 5100302 0072699 7/22/2003 Maharishi Vedic City - South Maharishi Vedic City 1750 Maharishi Center Ave. Maharishi Vedic City IA 52556 Jefferson 5200306 0073733 10/31/2025 MAKADA SUBDIVISION-STP MAKADA HOMEOWNERS ASSOCIATION 4298 MAUREEN TERRACE IOWA CITY IA 52240 (319)679-2413 Johnson 7945001 0048011 5/31/2025 MALCOM CITY OF STP CITY OF MALCOM CITY HALL 305 3RD STREET, PO BOX 66 MALCOM IA 50157-0066 (515)528-4245 Poweshiek 7450001 0023370 12/31/2020 MALLARD CITY OF STP CITY OF MALLARD CITY HALL, PO BOX 305 MALLARD IA 50562-0305 (712)425-3529 Palo Alto 6545001 0058572 12/31/2024 MALVERN CITY OF STP CITY OF MALVERN CITY HALL, PO BOX 550 MALVERN IA 51551-0550 (712)624-8282 Mills 2839001 0021032 6/30/2026 MANCHESTER CITY OF STP CITY OF MANCHESTER CITY HALL, 208 E MAIN ST. MANCHESTER IA 52057-1797 (563)927-3636 Delaware 3621100 0063568 9/30/2025 MANILDRA MILLING CORPORATION HONAN HOLDING'S USA, INC. 4501 COLLEGE BLVD, STE 310 LEAWOOD KS 66211 (913)362-0777 Fremont 2436001 0047368 7/31/2023 MANILLA CITY OF STP CITY OF MANILLA CITY HALL, P.O. BOX 398 MANILLA IA 51454-0398 (712)654-2632 Crawford 9845001 0047830 6/30/2025 MANLY CITY OF STP CITY OF MANLY CITY HALL 106 S BROADWAY, P.O. BOX 516 MANLY IA 50456-0516 (641)454-3090 Worth 1457001 0023337 8/31/2022 MANNING CITY OF STP CITY OF MANNING CITY HALL, 321 CENTER ST. MANNING IA 51455 (712)655-2176 Carroll 1351001 0027189 6/30/2024 MANSON CITY OF STP CITY OF MANSON CITY HALL 1015 13TH STREET, PO BOX 430 MANSON IA 50563-0430 (712)469-3759 Calhoun 1351000 0082651 2/28/2025 MANSON, CITY OF WTP CITY OF MANSON 1015 13TH STREET PO BOX 430 MANSON IA 50563 (712)469-3043 Calhoun 1461001 0081639 7/31/2026 MAPLE RIVER JUNCTION STP CARROLL COUNTY 114 EAST 6TH STREET CARROLL IA 51401- (712)792-4923 Carroll 6727001 0021288 9/30/2022 MAPLETON CITY OF STP CITY OF MAPLETON CITY HALL, 513 MAIN ST. MAPLETON IA 51034 (712)881-1351 Monona 7000601 0066338 3/31/2018 MAPLEWOOD ESTATES TIM MCCLEARY MAPLEWOOD ESTATES 4500 25TH STREET SOUTH MUSCATINE IA 52761 (563)263-5896 Muscatine 4950001 0024481 5/31/2025 MAQUOKETA CITY OF STP CITY OF MAQUOKETA CITY HALL, 201 E PLEASANT ST MAQUOKETA IA 52060-3050 (563)652-2484 Jackson 1150001 0067652 9/30/2025 MARATHON CITY OF STP CITY OF MARATHON CITY HALL, PO BOX 189 MARATHON IA 50565-0189 (712)289-2261 Buena Vista 3420001 0057207 4/30/2025 MARBLE ROCK CITY OF STP CITY OF MARBLE ROCK PO BOX 98 MARBLE ROCK IA 50653-0098 (641)315-2621 Floyd 1838001 0036111 1/31/2025 MARCUS CITY OF STP CITY OF MARCUS CITY HALL PO BOX 542 MARCUS IA 51035-0542 (712)376-4715 Cherokee 4843001 0047937 6/30/2026 MARENGO CITY OF STP CITY OF MARENGO CITY HALL 153 E MAIN STREET MARENGO IA 52301 (319)642-3232 Iowa 8456936 0079472 2/28/2023 Marion Rus Feedlot Rus Farms, Inc. 3283 Dogwood Ave. Rock Valley IA 51247 (712)540-2134 Sioux 5751002 0078689 8/31/2025 MARION, CITY OF MS4 MARION, CITY OF 1225 6TH AVE. MARION IA 52302- (319)743-6340 Linn 9756759 0080098 11/30/2021 Mark Baldwin Feedlot Mark D. Baldwin Baldwin Livestock Co. 3846 245th St. Anthon IA 51004 (712)870-0555 Woodbury 7556898 0080446 11/30/2023 Mark Beitelspacher Feedlot Mark Beitelspacher 28279 130th St. Le Mars IA 51031 (712)540-2028 Plymouth 2256001 0059463 4/30/2022 MARQUETTE CITY OF STP CITY OF MARQUETTE 88 NORTH STREET P.O. BOX 7 MARQUETTE IA 52158-0007 (563)873-3735 Clayton 8459758 0083810 7/31/2022 Mars Farms, Inc. LYLE MARS MARS FARMS 3917 410TH ST. ALTON IA 51003 (712)360-0147 Sioux 6400901 0075973 6/30/2020 MARSHALL COUNTY LAW CENTER MARSHALL COUNTY, IOWA 1 EAST MAIN ST. MARSHALLTOWN IA 50158 (515)754-6330 Marshall 6469001 0038610 4/30/2021 MARSHALLTOWN CITY OF WATER POLLUTION CONTROL CITY OF MARSHALLTOWN CITY HALL, 24 N CENTER ST. MARSHALLTOWN IA 50158-4912 (641)754-5701 Marshall 6469000 0075345 12/31/2023 MARSHALLTOWN WATER TREATMENT PLANT MARSHALLTOWN WATER WORKS 205 EAST STATE STREET P. O. BOX 1420 MARSHALLTOWN IA 50158-1420 (641)753-7913 Marshall 6469002 0080039 7/31/2026 MARSHALLTOWN, CITY OF MS4 MARSHALLTOWN, CITY OF 1001 WOODLAND AVE. MARSHALLTOWN IA 50158 (641)754-5749 Marshall 5737001 0062987 12/31/2022 MARTELLE CITY OF STP CITY OF MARTELLE CITY HALL, P.O. BOX 96 MARTELLE IA 52305-0096 (319)482-3381 Linn 9147001 0031836 9/30/2026 MARTENSDALE CITY OF STP CITY OF MARTENSDALE P.O. BOX 109 MARTENSDALE IA 50160-0109 (641)764-2622 Warren 5452001 0078727 9/30/2026 MARTINSBURG, CITY OF STP REGIONAL UTILITY SERVICE SYSTEMS 1501 W. WASHINGTON ST., STE. 103 MOUNT PLEASANT IA 52641 (641)472-6177 Keokuk 1750001 0057169 7/31/2026 MASON CITY, CITY OF STP CITY OF MASON CITY CITY ADMINISTRATOR 10 1ST ST NW MASON CITY IA 50401- (641)421-3682 Cerro Gordo 1750000 0077305 2/29/2024 MASON CITY, CITY OF WTP CITY OF MASON CITY 10 FIRST ST. NW MASON CITY IA 50401 (641)421-3683 Cerro Gordo 2843001 0077241 2/29/2024 MASONVILLE, CITY OF-STP CITY OF MASONVILLE P.O. BOX 135 MASONVILLE IA 50654-0135 (563)927-2707 Delaware 1558001 0048348 10/31/2021 MASSENA CITY OF STP CITY OF MASSENA CITY HALL 100 MAIN PO BOX 109 MASSENA IA 50853-0109 (712)779-2295 Cass 2900110 0075035 12/31/2021 MATTESON MARINE SERVICE, INC. MATTESON MARINE SERVICE, INC. # 1 SOUTH POINT P. O. BOX 667 BURLINGTON IA 52601-0667 (319)754-5318 Des Moines 8458001 0023451 1/31/2022 MAURICE CITY OF STP CITY OF MAURICE CITY HALL, P.O. BOX 68 MAURICE IA 51036-0068 (712)567-5371 Sioux 8557001 0041793 5/31/2026 MAXWELL CITY OF STP CITY OF MAXWELL PO BOX 215 107 MAIN STREET MAXWELL IA 50161-0215 (515)387-8655 Story 3350001 0025976 4/30/2024 MAYNARD CITY OF STP CITY OF MAYNARD CITY HALL, PO BOX 145 MAYNARD IA 50655-0145 (563)637-2269 Fayette 8552001 0051934 10/31/2017 MCCALLSBURG CITY OF STP CITY OF MCCALLSBURG CITY HALL, P.O. BOX F MCCALLSBURG IA 50154- (515)434-2242 Story 8258001 0057185 10/31/2024 MCCAUSLAND CITY OF STP CITY OF MCCAUSLAND 305 SALINA ST. P.O. BOX 277 MCCAUSLAND IA 52758 (563)225-3600 Scott 2561103 0066982 8/31/2024 MCCREARY COMMUNITY BUILDING MUN. SWIMMING POOL CITY OF PERRY CITY HALL, PO BOX 545 PERRY IA 50220 (515)465-2481 Dallas 2258001 0028614 4/30/2022 MCGREGOR CITY OF STP CITY OF MCGREGOR CITY HALL, PO BOX 505 MCGREGOR IA 52157-0505 (563)873-3795 Clayton 8462015 0077844 10/31/2021 Meadowvale Dairy - North Site Meadowvale Dairy - North Site 1760 300th Street Rock Valley IA 51247 (712)476-2560 Sioux 8461393 0077852 12/5/2017 Meadowvale Dairy - South Sjerp Ysselstein 1760 300th Street Rock Valley IA 51247 (712)476-2560 Sioux 1667001 0022314 11/30/2021 MECHANICSVILLE CITY OF STP CITY OF MECHANICSVILLE 100 E FIRST ST, PO BOX 339 MECHANICSVILLE IA 52306-0339 (563)432-7756 Cedar 2948001 0025917 2/29/2024 MEDIAPOLIS CITY OF STP CITY OF MEDIAPOLIS CITY CLERK PO BOX 97 MEDIAPOLIS IA 52637 (319)394-3125 Des Moines 6471001 0036552 5/31/2026 MELBOURNE CITY OF STP CITY OF MELBOURNE 111 1st STREET P.O. Box 37 MELBOURNE IA 50162 (515)482-3388 Marshall 6352001 0047783 10/31/2022 MELCHER-DALLAS CITY OF STP CITY OF MELCHER-DALLAS 305 D MAIN E DALLAS IA 50062 (641)947-6501 Marion 6868001 0076902 7/31/2016 MELROSE CITY OF STP (RATHBUN REGIONAL WATER ASSN) RATHBUN REGIONAL WATER ASSOCIATION 16166 HWY J29 CENTERVILLE IA 52544 (641)647-2416 Monroe 7234001 0083658 12/31/2022 MELVIN CITY OF STP IOWA LAKES REGIONAL WATER PO BOX 555 SPENCER IA 51301- (712)262-8847 Osceola 3956001 0071374 7/31/2021 MENLO CITY OF STP CITY OF MENLO 417 SHERMAN P.O. BOX 190 MENLO IA 50164-0190 (641)524-2411 Guthrie 7727801 0081477 11/30/2024 MERCYONE DES MOINES MEDICAL CENTER MERCYONE DES MOINES MEDICAL CENTER 1111 6TH AVE. DES MOINES IA 50314-2611 (515)247-3087 Polk 1849001 0020753 7/31/2019 MERIDEN CITY OF STP CITY OF MERIDEN CITY HALL, PO BOX 113 MERIDEN IA 51037 (712)443-8841 Cherokee 7548001 0024538 1/31/2020 MERRILL CITY OF STP CITY OF MERRILL CITY HALL, 608 MAIN ST. MERRILL IA 51038- (712)938-2514 Plymouth 1754001 0076724 8/31/2021 MESERVEY, CITY OF-STP CERRO GORDO CO. BOARD OF SUPERVISORS 220 NORTH WASHINGTON MASON CITY IA 50401 (641)421-3021 Cerro Gordo 8748102 0075647 5/31/2022 MICHAEL FOODS, INC. MICHAEL FOODS INC. 1009 S. BROOKS ST. LENOX IA 50851 (641)333-4700 Taylor 9700102 0004103 11/30/2022 MIDAMERICAN ENERGY - NEAL NORTH ENERGY CENTER MIDAMERICAN ENERGY COMPANY 666 GRAND AVENUE P.O. BOX 657 DES MOINES IA 50303-0657 Woodbury 9700106 0061859 8/31/2022 MIDAMERICAN ENERGY - NEAL SOUTH ENERGY CTR MIDAMERICAN ENERGY COMPANY 666 GRAND AVENUE P.O. BOX 657 DES MOINES IA 50303-0657 (515)281-2951 Woodbury 8278101 0003611 12/14/2021 MIDAMERICAN ENERGY CO - RIVERSIDE STATION MIDAMERICAN ENERGY COMPANY 666 GRAND AVE DES MOINES IA 50303 Scott 5800105 0063282 3/31/2025 MIDAMERICAN ENERGY CO. - LOUISA STATION MIDAMERICAN ENERGY COMPANY 4299 NW URBANDALE DRIVE URBANDALE IA 50322-7916 (515)281-2458 Louisa 2952001 0025381 4/30/2021 MIDDLETOWN CITY OF STP CITY OF MIDDLETOWN CITY HALL PO BOX 100 MIDDLETOWN IA 52638 (319)752-8340 Des Moines 4953001 0028606 8/31/2022 MILES CITY OF STP CITY OF MILES CITY HALL, P.O. BOX 309 MILES IA 52064- (563)682-7618 Jackson 3050000 0081299 12/31/2023 MILFORD WATER TREATMENT PLANT MILFORD MUNICIPAL UTILITIES 806 N AVE, STE #3 MILFORD IA 51351 (712)338-2402 Dickinson 4852001 0077283 11/30/2017 MILLERSBURG CITY OF (POWESHIEK WATER ASSN) POWESHIEK WATER ASSOCIATION P.O. BOX 504 BROOKLYN IA 52211 (641)522-7416 Iowa 9155001 0030511 5/31/2024 MILO CITY OF STP CITY OF MILO CITY HALL, PO BOX 111 MILO IA 50166-0111 (515)942-6241 Warren 8954001 0058751 11/30/2017 MILTON CITY OF STP CITY OF MILTON CITY HALL, P.O. BOX 220 MILTON IA 52570-0220 (641)656-4454 Van Buren 2547001 0023418 3/31/2022 MINBURN CITY OF STP CITY OF MINBURN CITY HALL, P.O. BOX 213 MINBURN IA 50167 (515)677-2245 Dallas 7849001 0048330 6/30/2026 MINDEN CITY OF STP CITY OF MINDEN P.O. BOX 68 MINDEN IA 51553-0068 (712)483-2991 Pottawattamie 6549001 0082082 7/31/2019 MINEOLA CITY OF STP REGIONAL WATER 108 HIGHWAY 59 AVOCA IA 51521- (712)343-2413 Mills 5052001 0022276 12/31/2025 MINGO CITY OF STP CITY OF MINGO CITY HALL, PO BOX 153 MINGO IA 50168-0153 (641)363-4441 Jasper

30 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Owner Name Owner Address1 Owner Address2 Owner City Owner Owner Zip Owner Phone County State 3100203 0052589 8/31/2021 MIRACLE CAR WASH THOMAS SMITH 15279 CIRCLE RIDGE ROAD SHERRILL IA 52073 (563)588-0185 Dubuque 0500103 0078166 6/30/2021 MISSOURI RIVER ENERGY SERVICES-EXIRA STATION WESTERN MINNESOTA MUNICIPAL POWER AGENCY 3724 WEST AVERA DRIVE P.O. BOX 88920 SIOUX FALLS SD 57109-8920 (605)338-4042 Audubon 4344001 0026654 2/13/2012 MISSOURI VALLEY CITY OF STP CITY OF MISSOURI VALLEY 223 E ERIE MISSOURI VALLEY IA 51555-1599 (712)642-3502 Harrison 4344000 0080454 4/30/2024 MISSOURI VALLEY CITY OF WTP CITY OF MISSOURI VALLEY 223 EAST ERIE STREET MISSOURI VALLEY IA 51555- (712)642-3502 Harrison 7751001 0021997 2/28/2022 MITCHELLVILLE CITY OF STP CITY OF MITCHELLVILLE P. O. BOX 817 MITCHELLVILLE IA 50169-0817 (515)967-2935 Polk 9756524 0079294 7/31/2025 MJ Cattle Company Todd Sulsberger 2595 County Rd D-25 Hornick IA 51026 (712)259-4376 Woodbury 4347001 0081051 6/30/2019 MODALE, CITY OF STP CITY OF MODALE 310 PALMER STREET P.O. BOX 8 MODALE IA 51556-9998 (712)645-2601 Harrison 5200605 0064874 8/31/2023 MODERN MANOR MOBILE HOME COURT MODERN MANOR, INC. 110 HUMMINGBIRD LANE IOWA CITY IA 52245 (319)351-6794 Johnson 4349001 0023507 6/30/2007 MONDAMIN CITY OF STP CITY OF MONDAMIN CITY HALL, P.O. BOX 196 MONDAMIN IA 51557- (712)646-2431 Harrison 2264001 0036927 12/31/2021 MONONA CITY OF STP CITY OF MONONA 104 E CENTER STREET, PO BOX 298 MONONA IA 52159-0298 (536)539-2355 Clayton 5054001 0041947 8/31/2025 MONROE CITY OF STP (EAST) CITY OF MONROE CITY CLERK 206 WEST SHERMAN MONROE IA 50170 Jasper 7950001 0036935 8/31/2026 MONTEZUMA CITY OF STP CITY OF MONTEZUMA 501 E. MAIN STREET P.O. BOX 314 MONTEZUMA IA 50171-0314 (641)623-5617 Poweshiek 7950000 0084310 7/31/2024 Montezuma, City of WTP City of Montezuma 501 E Main St. MONTEZUMA IA 50171 (641)623-5675 Poweshiek 5343001 0026034 9/30/2021 MONTICELLO CITY OF STP CITY OF MONTICELLO 200 E 1ST STREET MONTICELLO IA 52310-1501 (319)465-3577 Jones 8666001 0058700 11/30/2025 MONTOUR CITY OF STP CITY OF MONTOUR CITY CLERK, CITY HALL P.O. BOX 120 MONTOUR IA 50173 (641)492-6006 Tama 7038901 0073890 4/30/2022 MONTPELIER SANITARY DISTRICT, VILLAGE OF VILLAGE OF MONTPELIER SANITARY DISTRICT 3803 HIGHWAY 22 MONTPELIER IA 52759 (319)381-2440 Muscatine 5650001 0030848 12/31/2025 MONTROSE CITY OF STP CITY OF MONTROSE CITY HALL, 102 SOUTH 2ND STREET P.O. BOX 57 MONTROSE IA 52639-0057 (319)463-5533 Lee 6731001 0062995 6/30/2023 MOORHEAD CITY OF STP CITY OF MOORHEAD CITY HALL, P.O. BOX 97 MOORHEAD IA 51558-0097 (712)886-5211 Monona 7864122 0083321 4/30/2026 Moran Beef #2 Frank Moran 25843 Old Lincoln Highway Honey Creek IA 51542 (402)681-3871 Pottawattamie 7856509 0079537 4/30/2026 Moran Beef, Inc. Frank Moran 25843 HWY 183 Honey Creek IA 51542 (402)681-3871 Pottawattamie 0467001 0056693 4/30/2025 MORAVIA CITY OF STP CITY OF MORAVIA CITY HALL, PO BOX 246 MORAVIA IA 52571 (641)724-9811 Appanoose 5857001 0059587 6/30/2023 MORNING SUN CITY OF STP CITY OF MORNING SUN CITY HALL, PO BOX 426 MORNING SUN IA 52640-0426 (319)868-7936 Louisa 6056614 0083828 7/31/2022 Moser Feedlot Kathy & Keith Moser Moser Feedlot 2242 170th Street LARCHWOOD IA 51241 (605)231-1482 Lyon 0472001 0020851 10/31/2025 MOULTON CITY OF STP CITY OF MOULTON 111 S. Main St MOULTON IA 52572-1327 (641)642-3328 Appanoose 0650001 0059153 8/31/2020 MOUNT AUBURN CITY OF STP CITY OF MOUNT AUBURN CITY HALL, PO BOX 103 MOUNT AUBURN IA 52313-0103 (319)240-0078 Benton 8055001 0023574 1/31/2024 MOUNT AYR CITY OF STP CITY OF MOUNT AYR CITY HALL, 200 SOUTH TAYLOR MOUNT AYR IA 50854 (641)464-2402 Ringgold 4453002 0070009 8/31/2023 MOUNT PLEASANT CITY OF STP (EAST) CITY OF MOUNT PLEASANT CITY HALL, 307 EAST MONROE ST. MOUNT PLEASANT IA 52641-2109 (319)385-1470 Henry 4453001 0047970 5/31/2024 MOUNT PLEASANT CITY OF STP (MAIN) CITY OF MOUNT PLEASANT CITY HALL, 307 EAST MONROE ST. MOUNT PLEASANT IA 52641 (319)385-1470 Henry 8958001 0076651 4/30/2022 MOUNT STERLING, CITY OF STP REGIONAL UTILITY SERVICE SYSTEMS 1501 WEST WASHINGTON STREET MOUNT PLEASANT IA 52641 (319)385-1223 Van Buren 4455001 0082881 7/31/2022 MOUNT UNION CITY OF (RUSS) REGIONAL UTILITY SERVICE SYSTEMS 901 NORTH 8TH STREET FAIRFIELD IA 52556- (641)209-1011 Henry 5758001 0023710 6/30/2025 MOUNT VERNON CITY OF STP CITY OF MOUNT VERNON CITY HALL, 213 1ST ST WEST MT. VERNON IA 52314 (319)895-8742 Linn 9753001 0042943 10/31/2024 MOVILLE CITY OF STP CITY OF MOVILLE CITY HALL, PO BOX N MOVILLE IA 51039 (712)873-3545 Woodbury 8222603 0068012 3/31/2024 MT. JOY MOBILE HOME PARK MT. JOY MOBILE HOME PARK 2901 S 9TH AVE ELDRIDGE IA 52748-9331 (319)324-8242 Scott 5500106 0073784 7/31/2025 MURPHY FARMS, LLC MURPHY-BROWN LLC DBA SMITHFIELD HOG PROD. 2124 90TH AVENUE ALGONA IA 50511 Kossuth 2032001 0063304 12/31/2023 MURRAY CITY OF STP MURRAY CITY OF STP 420 MAPLE STREET, PO BOX 186 MURRAY IA 50174-0186 (641)447-2522 Clarke 7048001 0023434 3/31/2025 MUSCATINE CITY OF STP CITY OF MUSCATINE WATER POLLUTION CONTROL DEPT. 1202 MUSSER STREET MUSCATINE IA 52761-1645 (563)263-2752 Muscatine 7000109 0082708 1/18/2015 MUSCATINE POWER & WATER CCR LANDFILL CITY OF MUSCATINE BD OF WATER, LIGHT & COMM. TRUSTEES 3205 CEDAR STREET MUSCATINE IA 52761-2204 Muscatine 7048106 0001082 2/28/2018 MUSCATINE POWER AND WATER MUSCATINE POWER AND WATER 3205 CEDAR STREET MUSCATINE IA 52761 (563)262-3394 Muscatine 8456553 0084263 10/31/2023 Myron Gradert Feedlot Myron Gradert 2220 450th St. IRETON IA 51027 (712)539-8132 Sioux 0477001 0071064 12/31/2015 MYSTIC CITY OF STP CITY OF MYSTIC CITY HALL P.O. BOX 69 MYSTIC IA 52574-0069 (641)647-2243 Appanoose 1967001 0024503 9/30/2022 NASHUA CITY OF STP CITY OF NASHUA PO BOX 38 NASHUA IA 50658-0038 (641)435-4156 Chickasaw 3126801 0080331 6/30/2025 NATIONAL MISSISSIPPI RIVER MUSEUM AND AQUARIUM DUBUQUE COUNTY HISTORICAL SOCIETY 350 E. 3RD STREET DUBUQUE IA 52001 (563)557-9545 Dubuque 5800107 0058262 2/28/2018 NATURAL GAS PIPELINE CO OF AMERICA #204 NATURAL GAS PIPELINE COMPANY OF AMERICA 500 DALLAS STREET SUITE 1000 HOUSTON TX 77002- Louisa 5800109 0081701 7/31/2026 NATURAL GAS PIPELINE COMPANY OF AMERICA - SWD #1 WELL NATURAL GAS PIPELINE COMPANY OF AMERICA 370 VAN GORDON STREET LAKEWOOD CO 80228 Louisa 5800108 0075485 7/31/2026 NATURAL GAS PIPELINE COMPANY OF AMERICA - A. GRIFFIN M-1 WELL NATURAL GAS PIPELINE COMPANY OF AMERICA 370 VAN GORDON STREET LAKEWOOD CO 80228 (303)763-3281 Louisa 0709801 0080047 1/31/2019 NAZARETH LUTHERAN CHURCH NAZARETH LUTHERAN CHURCH 7401 UNIVERSITY AVENUE CEDAR FALLS IA 50613 (319)266-7589 Black Hawk 7853001 0021041 10/31/2023 NEOLA CITY OF STP CITY OF NEOLA 105 3RD STREET P.O. BOX 67 NEOLA IA 51559-0067 (712)485-2307 Pottawattamie 9433109 0064866 10/31/2021 NESTLE PURINA PETCARE NESTLE PURINA PETCARE CHECKERBOARD SQUARE ST. LOUIS MO 63164 Webster 8562001 0031704 10/31/2021 NEVADA CITY OF STP CITY OF NEVADA 1209 6TH STREET P.O. BOX 530 NEVADA IA 50201-0530 (515)382-5466 Story 0370001 0026611 6/30/2022 NEW ALBIN CITY OF STP CITY OF NEW ALBIN 164 ELM ST NE NEW ALBIN IA 52160-0014 (563)544-4260 Allamakee 3500204 0052983 9/30/2023 NEW COOPERATIVE, INC. NEW COOPERATIVE, INC. 2626 1ST AVE S PO BOX 818 FORT DODGE IA 50501 (515)955-9043 Franklin 1970001 0028525 5/31/2024 NEW HAMPTON CITY OF STP CITY OF NEW HAMPTON 112 EAST SPRING ST. NEW HAMPTON IA 50659 (641)399-5906 Chickasaw 1271001 0056880 4/30/2023 NEW HARTFORD CITY OF STP CITY OF NEW HARTFORD 503 PACKWAUKKE ST PO BOX 212 NEW HARTFORD IA 50660 (319)983-2548 Butler 9800114 0052535 2/14/2021 NEW HEAVEN CHEMICALS IOWA LLC - SMO MANUFACTURING PLANT NEW HEAVEN CHEMICALS IOWA, LLC 18 JENNY LAYNE ROAD SUSSEX NJ 07461 (201)506-9109 Worth 8264001 0075221 9/30/2022 NEW LIBERTY, CITY OF-STP CITY OF NEW LIBERTY P. O. Box 39 NEW LIBERTY IA 52765-0039 (563)843-3246 Scott 4458001 0025941 10/31/2021 NEW LONDON CITY OF STP CITY OF NEW LONDON CITY HALL, P.O. BOX 184 NEW LONDON IA 52645-0184 (319)367-7702 Henry 8758001 0033049 5/31/2015 NEW MARKET CITY OF STP CITY OF NEW MARKET CITY HALL, P.O. BOX 338 NEW MARKET IA 51646-0338 (712)585-3479 Taylor 4271001 0028193 5/31/2018 NEW PROVIDENCE CITY OF STP CITY OF NEW PROVIDENCE CITY HALL, P.O. BOX 122 NEW PROVIDENCE IA 50206-0122 (641)486-5322 Hardin 6264001 0032417 6/30/2025 NEW SHARON CITY OF STP CITY OF NEW SHARON CITY CLERK - CITY HALL PO BOX 507 NEW SHARON IA 50207 (641)637-4124 Mahaska 3165001 0027391 9/30/2016 NEW VIENNA CITY OF STP CITY OF NEW VIENNA CITY HALL, P.O. BOX 19 NEW VIENNA IA 52065-0019 (563)921-2295 Dubuque 9159901 0058891 8/31/2023 NEW VIRGINIA SANITARY DISTRICT-STP NEW VIRGINIA SANITARY DISTRICT P.O. BOX 488 NEW VIRGINIA IA 50210-0214 (641)449-3636 Warren 1155001 0021989 6/30/2021 NEWELL, CITY OF STP CITY OF NEWELL CITY 207 E 2ND STREET NEWELL IA 50568-0315 (712)272-4410 Buena Vista 0653001 0043664 9/30/2022 NEWHALL CITY OF STP CITY OF NEWHALL P.O. BOX 177 NEWHALL IA 52315-0177 (319)223-5709 Benton 5059002 0027723 7/31/2025 NEWTON CITY OF STP CITY OF NEWTON CITY HALL, PO BOX 399 NEWTON IA 50208-0399 (641)792-2787 Jasper 5700104 0003727 2/28/2021 NEXTERA ENERGY DUANE ARNOLD, LLC NEXTERA ENERGY RESOURCES 700 UNIVERSE BLVD P.O. BOX 14000 JUNO BEACH FL 33408-0420 Linn 7052001 0036561 3/31/2022 NICHOLS CITY OF STP CITY OF NICHOLS CITY CLERK - CITY HALL PO BOX 40 NICHOLS IA 52766 (319)723-4524 Muscatine 0260001 0040231 5/31/2026 NODAWAY CITY OF (SIRWA) SOUTHERN IOWA RURAL WATER ASSOCIATION PO BOX 407 1391 190th ST CRESTON IA 50801 (641)782-5744 Adams 3423001 0032778 6/30/2025 NORA SPRINGS CITY OF STP CITY OF NORA SPRINGS 45 N HAWKEYE AVE PO BOX 336 NORA SPRINGS IA 50458-0336 (641)749-5315 Floyd 6058902 0084093 12/31/2023 Norm Cleveringa Feedlot Norm Cleveringa 2642 Elmwood Ave. Rock Valley IA 51247 (712)478-4584 Lyon 4858001 0034282 9/30/2021 NORTH ENGLISH CITY OF STP City of North English CITY CLERK, CITY HALL 200 S Main PO Box 220 NORTH ENGLISH IA 52316 (319)664-3810 Iowa 5252001 0032905 10/31/2025 NORTH LIBERTY CITY OF STP CITY OF NORTH LIBERTY CITY CLERK, CITY HALL PO BOX 77 NORTH LIBERTY IA 52317-0077 (319)626-5700 Johnson 5252003 0078794 8/31/2024 NORTH LIBERTY, CITY OF MS4 NORTH LIBERTY, CITY OF P.O. BOX 77 5 E. CHERRY ST. NORTH LIBERTY IA 52317- (319)626-5711 Johnson 7705500 0063321 3/31/2022 NORTH POLK COMMUNITY SCHOOL DISTRICT NORTH POLK COMMUNITY SCHOOL DISTRICT 13930 NE 6TH ST. ALLEMAN IA 50007 (515)984-3400 Polk 7856255 0077666 1/31/2025 North Ridge Feedlot (Formerly Rolling B Farms) Dan Pederson 25889 Idlewood Rd. Underwood IA 51576 (712)566-2054 Pottawattamie 5500501 0078115 10/31/2021 NORTH UNION COMMUNITY SCHOOL DISTRICT NORTH UNION COMMUNITY SCHOOL DISTRICT 308 310TH STREET PO BOX 109 FENTON IA 50539 (515)889-2261 Kossuth 3100611 0066290 11/30/2025 NORTHEND MOBILE HOME PARK KEVIN JAEGER NORTHEND MOBILE HOME PARK 17500 JOHN DEERE ROAD DUBUQUE IA 52001 (563)583-6677 Dubuque 2500122 0077038 2/28/2022 NORTHERN NATURAL GAS - UNDERGROUND INJECTION WELL NORTHERN NATURAL GAS COMPANY 8101 BIRCHWOOD COURT, SUITE F JOHNSTON IA 50131- Dallas 7800100 0004391 6/30/2024 NORTHERN NATURAL GAS CO. OAKLAND STATION NORTHERN NATURAL GAS 1111 SOUTH 103RD STREET OMAHA NE 68124- (515)226-2011 Pottawattamie 0800101 0046957 10/31/2023 NORTHERN NATURAL GAS CO. OGDEN STATION NORTHERN NATURAL GAS COMPANY 1111 S. 103RD ST. OMAHA NE 68124 (402)398-7847 Boone 2500103 0000299 9/30/2025 NORTHERN NATURAL GAS CO. REDFIELD STATION NORTHERN NATURAL GAS COMPANY 1111 SOUTH 103RD STREET OMAHA NE 68124 (402)398-7847 Dallas 4100100 0064327 7/31/2025 NORTHERN NATURAL GAS CO. VENTURA STATION NORTHERN NATURAL GAS COMPANY 1111 S 103RD ST OMAHA NE 68124 Hancock 4100115 0052829 3/13/2024 NORTHERN NATURAL GAS CO., GARNER - LAOP NORTHERN NATURAL GAS COMPANY 2315 YALE AVE GARNER IA 50438 Hancock 9855001 0032395 4/30/2023 NORTHWOOD CITY OF STP CITY OF NORTHWOOD CITY HALL, 627 CENTRAL AVE NORTHWOOD IA 50459-1584 (641)324-1075 Worth 9164002 0078913 12/31/2024 NORWALK, CITY OF MS4 NORWALK, CITY OF 705 NORTH AVE. NORWALK IA 50211- (515)981-0228 Warren 0656001 0036943 6/30/2025 NORWAY CITY OF STP CITY OF NORWAY PO BOX 70 NORWAY IA 52318 (319)227-7351 Benton 7820106 0046752 10/31/2024 NUSTAR COUNCIL BLUFFS TERMINAL NUSTAR PIPELINE OPERATING PARTNERSHIP L.P. 7340 W 21ST ST N, STE 200 WICHITA KS 67205 (316)773-9001 Pottawattamie 7856376 0080144 8/31/2026 NVF Co, LLC Christine Clausen 16983 370th Street Carson IA 51525 (712)484-3314 Pottawattamie 6056581 0053137 9/30/2024 NW Iowa Feeders LLP NW Iowa Feeders LLP 1035 Harrison Avenue Rock Rapids IA 51246 Lyon 2900301 0075469 1/31/2026 OAK HILLS SUBDIVISION-STP OAK HILLS OWNERS ASSOCIATION 3000 KIRKWOOD STREET BURLINGTON IA 52601 (319)754-0611 Des Moines

31 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Owner Name Owner Address1 Owner Address2 Owner City Owner Owner Zip Owner Phone County State 5500300 0065242 9/30/2020 OAK LAKE MAINTENANCE, INC. OAK LAKE MAINTENANCE, INC 80 OAK LAKE DRIVE ALGONA IA 50511 (515)295-6139 Kossuth 7856001 0033448 9/30/2024 OAKLAND CITY OF STP CITY OF OAKLAND 101 NORTH MAIN STREET P.O. BOX 396 OAKLAND IA 51560 (712)482-6811 Pottawattamie 7856000 0081523 11/30/2019 OAKLAND CITY OF WTP CITY OF OAKLAND 614 DR. VANZEE ROAD PO BOX 396 OAKLAND IA 51560 (712)482-6811 Pottawattamie 5868001 0073601 9/30/2022 OAKVILLE CITY OF STP CITY OF OAKVILLE CITY HALL, P.O. BOX 66 OAKVILLE IA 52646-0066 (319)766-2981 Louisa 7239001 0035068 10/31/2017 OCHEYEDAN CITY OF STP CITY OF OCHEYEDAN 563 2ND STREET PO BOX 129 OCHEYEDAN IA 51354 (712)758-3602 Osceola 7100700 0052702 12/31/2023 OCRWS SOUTH WATER TREATMENT PLANT OSCEOLA COUNTY RURAL WATER SYSTEM 2270 WALNUT AVE MAY CITY IA 51354 (712)735-6795 O'Brien 8144001 0032506 6/30/2022 ODEBOLT CITY OF STP CITY OF ODEBOLT CITY HALL P.O. BOX 433 ODEBOLT IA 51458 (712)668-2231 Sac 3353001 0032344 5/31/2026 OELWEIN CITY OF STP CITY OF OELWEIN 20 2ND AVE. SW OELWEIN IA 50662-2241 (319)283-5440 Fayette 0858001 0041904 8/31/2025 OGDEN CITY OF STP CITY OF OGDEN CITY HALL, PO BOX 694 OGDEN IA 50212-0694 (515)275-2917 Boone 7565053 0080802 2/28/2023 Ohlendorf Feeders Dean Ohlendorf 48135 C38 REMSEN IA 51050 (712)540-3848 Plymouth 4465001 0074560 6/30/2025 OLDS MUNICIPAL UTILITIES CITY OF OLDS OLDS MUNICIPAL UTILITIES PO BOX 145 OLDS IA 52647- (319)254-2415 Henry 5355001 0036064 8/31/2021 OLIN CITY OF STP CITY OF OLIN CITY HALL, P.O. BOX 301 OLIN IA 52320-0301 (319)484-2875 Jones 5460001 0083801 2/29/2020 OLLIE, CITY OF STP REGIONAL UTILITY SERVICE SYSTEMS 1501 WEST WASHINGTON ST., SUITE 103 MOUNT PLEASANT IA 52641 (319)385-1223 Keokuk 3056332 0077534 4/30/2025 Olson Farm, Inc Stacy Olson 2830 270th Street Dickens IA 51333 (712)260-5020 Dickinson 6739001 0036145 4/27/2008 ONAWA CITY OF STP CITY OF ONAWA CITY CLERK, CITY HALL 914 DIAMOND STREET ONAWA IA 51040-1695 (712)433-1181 Monona 5358001 0057134 10/31/2022 ONSLOW CITY OF STP CITY OF ONSLOW CITY HALL, PO BOX 25 ONSLOW IA 52321-0025 (563)485-2703 Jones 0900902 0070751 4/30/2016 ORAN COMMUNITY SANITATION DISTRICT ORAN COMMUNITY SANITATION DISTRICT UNIT D16 ORAN IA 50664 (319)638-5691 Bremer 8474001 0032751 1/26/2009 ORANGE CITY CITY OF STP CITY OF ORANGE CITY P.O. BOX 406 125 CENTRAL AVENUE SE ORANGE CITY IA 51041-0406 (712)707-4885 Sioux 8474000 0077496 12/16/2013 ORANGE CITY, CITY OF WTP CITY OF ORANGE CITY 125 CENTRAL AVE.S.E. ORANGE CITY IA 51041 (712)707-4885 Sioux 6658001 0064271 4/30/2017 ORCHARD CITY OF STP CITY OF ORCHARD PO BOX 115 ORCHARD IA 50460-0115 (641)732-4380 Mitchell 0160001 0074535 7/28/2014 ORIENT STP (SIRWA) SOUTHERN IOWA RURAL WATER ASSOCIATION 1391 190TH. STREET CRESTON IA 50801 (641)782-5744 Adair 6663001 0032956 4/30/2024 OSAGE CITY OF STP CITY OF OSAGE CITY CLERK--CITY HALL 806 MAIN STREET PO BOX 29 OSAGE IA 50461-0029 (641)732-3709 Mitchell 2038002 0041815 3/31/2026 OSCEOLA CITY OF STP CITY OF OSCEOLA 115 N FILLMORE PO BOX 465 OSCEOLA IA 50213-0465 (641)342-2377 Clarke 2038003 0082953 6/30/2025 OSCEOLA CITY OF WTP CITY OF OSCEOLA 115 N. FILMORE STREET PO BOX 465 OSCEOLA IA 50213- Clarke 7856100 0065111 5/31/2024 OSI INDUSTRIES, LLC OSI INDUSTRIES, LLC 1225 CORPORATE BLVD PO BOX 2018 AURORA IL 60507-2018 (712)566-1300 Pottawattamie 6273001 0038539 3/31/2026 OSKALOOSA CITY OF STP (NORTHEAST) CITY OF OSKALOOSA CITY HALL 220 SOUTH MARKET STREET OSKALOOSA IA 52577 (641)673-9431 Mahaska 6273002 0038521 3/31/2026 OSKALOOSA CITY OF STP (SOUTHWEST) CITY OF OSKALOOSA 220 SOUTH MARKET OSKALOOSA IA 52577 (641)673-9431 Mahaska 9677003 0042781 9/3/2006 OSSIAN CITY OF STP CITY OF OSSIAN CITY CLERK, CITY HALL P.O. BOX 295 OSSIAN IA 52161 (563)532-8939 Winneshiek 9464001 0032948 10/31/2019 OTHO CITY OF STP CITY OF OTHO CITY HALL, P.O. BOX 160 205 N HIGHWAY STREET OTHO IA 50569-0160 (515)972-4441 Webster 9758001 0065811 6/30/2022 OTO CITY OF STP CITY OF OTO CITY HALL PO BOX 36 OTO IA 51044-0036 (712)827-4522 Woodbury 9083001 0058611 6/30/2023 OTTUMWA CITY OF STP CITY OF OTTUMWA 105 E 3RD ST OTTUMWA IA 52501 (515)683-0621 Wapello 9083000 0000035 4/30/2021 OTTUMWA WATER WORKS, CITY OF OTTUMWA WATER WORKS 230 TURNER DRIVE P.O. BOX 20 OTTUMWA IA 52501 (641)684-4606 Wapello 9083003 0078972 2/28/2025 OTTUMWA, CITY OF MS4 OTTUMWA, CITY OF 105 E. THRID ST. OTTUMWA IA 52501 (641)683-0680 Wapello 5260001 0032531 12/31/2025 OXFORD CITY OF STP City of Oxford CITY HALL PO BOX 481 205 Augusta Ave Oxford IA 52322-0481 (319)828-4742 Johnson 5361001 0032450 9/30/2021 OXFORD JUNCTION CITY OF STP CITY OF OXFORD JUNCTION CITY HALL, P.O. BOX 374 OXFORD JUNCTION IA 52323-0374 (563)826-2400 Jones 5260000 0082252 7/6/2014 OXFORD WATER TREATMENT PLANT CITY OF OXFORD CITY HALL PO BOX 481 OXFORD IA 52322- (319)631-1698 Johnson 7561001 0032336 4/30/2023 OYENS CITY OF STP CITY OF OYENS CITY HALL PO BOX 598 OYENS IA 51045-0598 (712)786-1173 Plymouth 5161001 0057819 1/14/2007 PACKWOOD CITY OF STP CITY OF PACKWOOD PO BOX 952 Packwood IA 52580-0952 (319)695-3300 Jefferson 7622001 0079308 10/31/2022 PALMER, CITY OF STP CITY OF PALMER 715 HENRIETTA AVE, PO BOX 175 PALMER IA 50571-0175 (712)359-2430 Pocahontas 8355001 0071455 12/31/2023 PANAMA CITY OF STP CITY OF PANAMA 111 MAIN STREET P.O. BOX 10 PANAMA IA 51562-0010 (712)489-2344 Shelby 8355000 0082856 8/31/2025 PANAMA CITY OF WTP CITY OF PANAMA 111 MAIN STREET PO BOX 10 PANAMA IA 51562 (712)489-2344 Shelby 3971001 0057045 3/31/2022 PANORA CITY OF STP CITY OF PANORA CITY HALL, P.O. BOX 98 PANORA IA 50216- (641)755-2164 Guthrie 6368301 0075434 4/30/2022 PARK HILLS WASTEWATER FACILITY CENTRAL IOWA WATER ASSOCIATION 3801 IOWA SPEEDWAY DR. NEWTON IA 50208- (641)792-7011 Marion 8200902 0062561 4/30/2023 PARK VIEW SANITARY DIST. STP PARK VIEW SANITARY DISTRICT 12-A GROVE ROAD ELDRIDGE IA 52748 (563)285-7397 Scott 6900100 0004693 3/31/2023 PARKER-HANNIFIN CORPORATION PARKER-HANNIFIN CORPORATION 6035 PARKLAND BLVD CLEVELAND OH 44124-4141 Montgomery 1281001 0058831 3/31/2022 PARKERSBURG CITY OF STP CITY OF PARKERSBURG CITY HALL, P.O. BOX 489 PARKERSBURG IA 50665 (319)346-2262 Butler 0400302 0053188 2/28/2025 PARKSIDE KNOLLS HOA PARKSIDE KNOLLS HOA 12262 PARKSIDE DR. MORAVIA IA 52571 (614)777-3524 Appanoose 5200603 0068349 9/30/2025 PARKVIEW MOBILE HOME COURT JASON WILCOX 1813 L. OLD HWY 6 RD. N.W. OXFORD IA 52322 (319)631-0253 Johnson 4863001 0071188 4/30/2022 PARNELL CITY OF STP CITY OF PARNELL CITY HALL PO Box 15 PARNELL IA 52325-0015 (319)668-9462 Iowa 3748001 0060321 10/31/2022 PATON CITY OF STP CITY OF PATON CITY HALL, PO BOX 219 PATON IA 50217-0219 (515)968-4533 Greene 6151001 0062961 3/31/2022 PATTERSON CITY OF STP CITY OF PATTERSON PO BOX 238 PATTERSON IA 50218-0238 (515)414-5456 Madison 2200102 0080624 2/28/2023 PATTISON SAND CO., LLC PATTISON SAND CO., LLC 701 FIRST ST. CLAYTON IA 52049 (563)964-2651 Clayton 7257895 0053072 4/30/2024 Paul Feldkamp Paul Feldkamp 5615 170th Street Sibley IA 51249 (712)461-1079 Osceola 7139001 0032352 3/31/2022 PAULLINA CITY OF STP CITY OF PAULLINA CITY CLERK, CITY HALL PO BOX 239 PAULLINA IA 51046 (712)949-3428 O'Brien 1716107 0081108 11/1/2012 PAYLESS FOODS FAMILY FOODS PO BOX 231 TIPTON IA 52772- Cerro Gordo 5100501 0052961 7/31/2024 PEKIN COMMUNITY SCHOOL DISTRICT PEKIN COMMUNITY SCHOOL DISTRICT 1062 BIRCH AVE. PACKWOOD IA 52580 Jefferson 6368006 0043869 8/31/2021 PELLA CITY OF STP CITY OF PELLA 825 Broadway PELLA IA 50219 (641)628-4173 Marion 6368000 0075001 2/28/2022 PELLA WATER TREATMENT PLANT CITY OF PELLA 825 BROADWAY PELLA IA 50219 (641)628-4173 Marion 2800901 0065854 1/31/2016 PENN CENTER, INC. DELAWARE COUNTY BOARD OF SUPERVISORS DELAWARE COUNTY COURT HOUSE 301 E MAIN MANCHESTER IA 52057 (563)927-2515 Delaware 3150000 0075507 7/31/2019 PEOSTA, CITY OF STP CITY OF PEOSTA 7896 BURDS RD. P.O. BOX 65 PEOSTA IA 52068-0065 (563)556-8755 Dubuque 7780101 0081035 2/28/2025 PEPSI BEVERAGES COMPANY PEPSI BEVERAGES COMPANY 3825 106TH ST. URBANDALE IA 50322 Polk 8400100 0004235 5/19/2025 PERDUE PREMIUM MEAT CO. AKA SIOUX PREME PACKING CO. - LAOP PERDUE FARMS 31149 OLD OCEAN CITY RD SALISBURY MD 21804 (712)722-2555 Sioux 2835101 0072877 12/31/2023 PERMEATE REFINING ROER ENERGY 205 Locust St. Hopkinton IA 52237 (319)480-7075 Delaware 2561001 0032379 10/4/2010 PERRY CITY OF STP CITY OF PERRY City Hall PO BOX 545 PERRY IA 50220-0545 (515)465-2481 Dallas 4360001 0073881 1/31/2016 PERSIA STP (REGIONAL WATER INC.) REGIONAL WATER INC. 108 HWY 59 AVOCA IA 51521 (712)343-2413 Harrison 2853001 0079740 8/31/2026 PETERSBURG, CITY OF STP (EIRUSS) EASTERN IOWA REGIONAL UTILITY SERVICE SYSTEMS 7600 COMMERCE PARK DUBUQUE IA 52002 (563)556-4166 Delaware 1156419 0079201 9/30/2025 Peterson Cattle Company James Peterson Peterson Cattle Co. 2070 510th St. Albert City IA 50510 (712)299-5755 Buena Vista 2154002 0033677 2/28/2023 PETERSON CITY OF STP CITY OF PETERSON CITY HALL, 101 MAIN STREET PETERSON IA 51047- (712)295-6401 Clay 9757143 0079316 8/31/2025 Peterson Feedlot - Whiskey Creek Brian Peterson 1739 Charles Ave. Lawton IA 51030 (712)389-4052 Woodbury 2756899 0080861 12/13/2017 Petty Custom Cattle Feeding The Feeder Creek Group W4310 Lake Drive Waldo WI 53093 Decatur 7856795 0080314 4/30/2022 Pheasant Ridge Farm, Inc. Dan Pedersen 25889 Idlewood Road Underwood IA 51576 (712)566-2054 Pottawattamie 9766002 0033685 3/31/2016 PIERSON CITY OF STP CITY OF PIERSON CITY HALL P.O. BOX 20 PIERSON IA 51048-0020 (712)375-5015 Woodbury 8600402 0074977 11/30/2017 PILGRIM HEIGHTS RETREAT CENTER-STP OUR SACRED SPACE, INC. C/O ANN GRAHAM 3005 E. AVE. MONTOUR IA 50173 (641)492-6165 Tama 0862001 0058530 6/30/2024 PILOT MOUND CITY OF STP CITY OF PILOT MOUND P.O. Box 128 PILOT MOUND IA 50223-0128 (515)275-3171 Boone 8200202 0076007 2/29/2024 PILOT TRAVEL CENTER #043 PILOT TRAVEL CENTERS LLC 5508 LONAS DR KNOXVILLE TN 37909 (865)588-7488 Scott 7900209 0078361 8/31/2024 PILOT TRAVEL CENTER #495 PILOT TRAVEL CENTERS LLC 5508 LONAS ROAD KNOXVILLE TN 37909- (865)588-7488 Poweshiek 1600201 0069043 3/31/2016 PILOT TRAVEL CENTERS #496 PILOT TRAVEL CENTERS LLC 5508 LONAS ROAD KNOXVILLE TN 37909- (865)588-7488 Cedar 4364001 0057827 1/31/2023 PISGAH CITY OF STP CITY OF PISGAH 106 EAST MAIN ST, PO BOX 217 PISGAH IA 51564-0217 (712)456-2301 Harrison 9756576 0080683 6/30/2021 Pithan Feedlots, Inc. Allan Pithan 112 Country Club Drive ANTHON IA 51004-8165 (712)490-1730 Woodbury 0960001 0033693 12/31/2022 PLAINFIELD CITY OF STP CITY OF PLAINFIELD 707 MAIN STREET P.O. BOX 308 PLAINFIELD IA 50666-0308 (319)276-3449 Bremer 0484001 0080845 2/28/2025 PLANO, IOWA-ADLM-FMS RATHBUN REGIONAL WATER ASSOCIATION INC 16166 HWY J 29 CENTERVILLE IA 52544 (641)647-2416 Appanoose 4200122 0079138 2/28/2022 PLCP, L.P. PLCP, L.P. 33371 170th STREET STEAMBOAT ROCK IA 50672- (641)868-2676 Hardin 7767002 0078751 11/30/2024 PLEASANT HILL, CITY OF MS4 PLEASANT HILL, CITY OF 5160 MAPLE DR., SUITE A PLEASANT HILL IA 50327-8494 (515)262-9368 Polk 5171001 0082554 8/31/2015 PLEASANT PLAIN CITY OF STP (RUSS) REGIONAL UTILITY SERVICE SYSTEMS 1501 W. WASHINGTON ST., STE. 103 MOUNT PLEASANT IA 52641 (641)209-1011 Jefferson 7900208 0078018 8/31/2022 PLEASANT STAY INN & SUITES PARK VIEW INN & SUITES OF WEST BEND, LLC 4130 HWY 21 BROOKLYN IA 52211 Poweshiek 6377001 0035921 7/31/2022 PLEASANTVILLE CITY OF STP CITY OF PLEASANTVILLE 108 WEST JACKSON PO BOX 566 PLEASANTVILLE IA 50225-0566 (515)848-3316 Marion 1759001 0033383 7/31/2023 PLYMOUTH CITY OF STP CITY OF PLYMOUTH P.O. BOX 278 616 BROAD STREET PLYMOUTH IA 50464-0278 (641)696-3363 Cerro Gordo 7500115 0081248 9/30/2018 PLYMOUTH ENERGY, LLC PLYMOUTH ENERGY, LLC 22234 K42 MERRILL IA 51038- (712)938-2373 Plymouth 5600108 0070602 2/28/2022 PNB PROCESSORS, L.L.C. PNB PROCESSORS, L.L.C. P.O. BOX 80 DENMARK IA 52624-0080 (319)528-6153 Lee

32 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Owner Name Owner Address1 Owner Address2 Owner City Owner Owner Zip Owner Phone County State 7633001 0035173 2/28/2026 POCAHONTAS CITY OF STP CITY OF POCAHONTAS CITY CLERK, CIY HALL 23 WEST ELM AVENUE POCAHONTAS IA 50574 (712)335-4841 Pocahontas 4700107 0081558 2/29/2024 POET BIOREFINING - ARTHUR, LLC POET BIOREFINING - ARTHUR, LLC 2585 QUAIL AVE. ARTHUR IA 51431 (712)973-09 Ida 7200108 0078051 6/30/2020 POET BIOREFINING - ASHTON, LLC POET BIOREFINING 4615 N LEWIS AVE SIOUX FALLS SD 57104 Osceola 3900104 0077003 7/31/2025 POET BIOREFINING - COON RAPIDS, LLC POET BIOREFINING - COON RAPIDS, LLC 1015 GRANT AVENUE COON RAPIDS IA 50058 (712)684-5102 Guthrie 0200104 0080063 8/31/2022 POET BIOREFINING - CORNING POET BIOREFINING - CORNING 1680 BROOKS ROAD CORNING IA 50841 Adams 7400102 0078492 8/31/2024 POET BIOREFINING - EMMETSBURG, LLC POET BIOREFINING - EMMETSBURG, LLC 4724 380TH ST., PO BOX 318 EMMETSBURG IA 50536 (712)852-8700 Palo Alto 3300114 0079812 10/31/2024 POET BIOREFINING - FAIRBANK, LLC POET BIOREFINING - FAIRBANK, LLC 1277 102ND ST. FAIRBANK IA 50629 (319)326-0609 Fayette 9400120 0079570 2/28/2022 POET BIOREFINING - GOWRIE POET BIOREFINING - GOWRIE 1562 320TH STREET GOWRIE IA 50543 Webster 9800112 0078042 11/30/2021 POET BIOREFINING - HANLONTOWN, LLC IOWA ETHANOL LLC D/B/A POET BIOREFINING 3638 FIR AVE. P.O. BOX 135 HANLONTOWN IA 50444 (641)896-2500 Worth 4000109 0079588 11/30/2023 POET BIOREFINING - JEWELL POET BIOREFINING - JEWELL 2601 320TH STREET JEWELL IA 50130- Hamilton 1200108 0081272 3/31/2024 POET BIOREFINING - SHELL ROCK, LLC POET BIOREFINING - SHELL ROCK, LLC 30750 212TH ST. SHELL ROCK IA 50670 (319)885-2001 Butler 1363001 0032824 6/30/2022 POMEROY CITY OF STP CITY OF POMEROY PO BOX 220 114 S. Ontario St. POMEROY IA 50575-0220 (712)468-2411 Calhoun 8365001 0072443 1/31/2025 PORTSMOUTH CITY OF STP CITY OF PORTSMOUTH STP CITY HALL P.O. BOX 188 PORTSMOUTH IA 51565-0188 (712)743-2044 Shelby 0375001 0058904 4/30/2024 POSTVILLE CITY OF STP CITY OF POSTVILLE CITY CLERK, CITY HALL P.O. BOX 242 POSTVILLE IA 52162-0242 (563)864-7454 Allamakee 8456323 0078981 7/31/2025 Poverty Acres Feedlot, Inc Marc Schuver Jr. 4361 460th St. Granville IA 51022 (712)441-3602 Sioux 5064001 0033073 6/30/2024 PRAIRIE CITY, CITY OF STP CITY OF PRAIRIE CITY CITY HALL, PO BOX 607 PRAIRIE CITY IA 50228 (515)994-2649 Jasper 2200100 0003808 6/30/2024 PRAIRIE FARMS DAIRY PRAIRIE FARMS DAIRY 247 RESEARCH PARKWAY DAVENPORT IA 52808 Clayton 7500120 0052775 8/31/2020 PRAIRIE SUN FOODS, LLC PRAIRIE SUN FOODS, LLC 22058 K-42 MERRILL IA 51038 Plymouth 3300901 0061875 10/31/2016 PRAIRIE VIEW CARE FACILITY FAYETTE COUNTY BOARD OF SUPERVISORS 114 N VINE STREET, P.O. BOX 267 WEST UNION IA 52175 (563)422-3538 Fayette 5772001 0063347 5/31/2025 PRAIRIEBURG CITY OF STP CITY OF PRAIRIEBURG 109 WEST MAIN STREET PRAIRIEBURG IA 52219 (319)437-1444 Linn 0270001 0033456 3/31/2022 PRESCOTT CITY OF STP Southern Iowa Rural Water Association 1391 190TH ST. CRESTON IA 50801- Adams 3126502 0081817 2/28/2025 PRESCOTT ELEMENTARY SCHOOL DUBUQUE COMMUNITY SCHOOL DISTRICT 2300 CHANEY ROAD DUBUQUE IA 52001- (563)552-3175 Dubuque 4965001 0047864 4/30/2022 PRESTON CITY OF STP CITY OF PRESTON CITY HALL PO BOX 37 PRESTON IA 52069-0037 (563)689-3081 Jackson 7155001 0033031 7/31/2022 PRIMGHAR CITY OF STP City of Primghar City Hall 160 S Hayes Avenue PO Box 39 PRIMGHAR IA 51245-0039 (712)957-2435 O'Brien 8273001 0033227 6/30/2022 PRINCETON CITY OF STP CITY OF PRINCETON CITY HALL, P.O. BOX 307 PRINCETON IA 52768-0307 (319)289-5315 Scott 0819102 0076953 8/19/2014 PROLIANT HEALTH & BIOLOGICALS THE LAURIDSEN GROUP 2425 OAK TREE COURT ANKENY IA 50021 Boone 9360001 0082007 10/31/2022 PROMISE CITY, CITY OF STP CITY OF PROMISE CITY CITY HALL, P.O. BOX 93 PROMISE CITY IA 52583-0093 (641)874-5761 Wayne 4552001 0061352 10/31/2016 PROTIVIN CITY OF STP CITY OF PROTIVIN 221 S MAIN PO BOX 68 PROTIVIN IA 52163-0068 (563)569-8401 Howard 8457953 0080195 1/31/2022 Pruismann Feedlot Kent Pruismann 3431 Fig Ave. Rock Valley IA 51247 (712)722-3139 Sioux 2662001 0074802 1/31/2025 PULASKI, CITY OF STP RATHBUN REGIONAL WATER ASSOCIATION 16166 HWY J29 CENTERVILLE IA 52544-8307 (641)647-2416 Davis 3100201 0080233 10/31/2017 Q CASINO Q CASINO 1855 GREYHOUND PARK RD. DUBUQUE IA 52001 (563)590-4941 Dubuque 4700105 0076813 6/30/2022 QUAD COUNTY CORN PROCESSORS QUAD COUNTY CORN PROCESSORS 6059 159TH STREET P.O. BOX 248 GALVA IA 51020 (712)282-4628 Ida 0709108 0074071 1/31/2023 QUAD STATE GAUGING & MEASUREMENT QUAD STATE GAUGING & MEASUREMENT 622 ENTERPRISE DRIVE CEDAR FALLS IA 50613 (319)277-4429 Black Hawk 5715115 0000761 9/30/2021 QUAKER MANUFACTURING, LLC QUAKER MANUFACTURING, LLC 418 2ND STREET NE CEDAR RAPIDS IA 52401- (319)368-1530 Linn 4800103 0072044 6/30/2024 QUANTUM PLASTICS QUANTUM PLASTICS 2135 B AVENUE VICTOR IA 52347 (319)647-3151 Iowa 1074001 0057011 2/29/2024 QUASQUETON CITY OF STP CITY OF QUASQUETON PO BOX 15 QUASQUETON IA 52326-0015 (319)934-3340 Buchanan 9083104 0078000 9/30/2023 QUEST LINER, INC. - LAOP QUESTLINER, INC. 2099 SOUTHPARK CT., SUITE 1 DUBUQUE IA 52003- (563)584-2670 Wapello 1855001 0042994 8/31/2026 QUIMBY CITY OF STP CITY OF QUIMBY CITY HALL, P.O. BOX 187 QUIMBY IA 51049 (712)445-2319 Cherokee 4283001 0033707 4/30/2017 RADCLIFFE CITY OF STP CITY OF RADCLIFFE 310 ISABELLA P.O. BOX 20 RADCLIFFE IA 50230 (515)899-2118 Hardin 9575001 0062804 9/30/2022 RAKE CITY OF STP CITY OF RAKE CITY HALL, PO BOX 127 RAKE IA 50465-0127 (515)566-3735 Winnebago 4800705 0066265 12/31/2022 RAMADA INN SMOCK INVESTMENTS, LLC 2211 U AVE. WILLIAMSBURG IA 52361 (888)409-1099 Iowa 3361001 0076660 6/30/2024 RANDALIA CITY OF STP CITY OF RANDALIA CITY CLERK, CITY HALL P.O. BOX 465 RANDALIA IA 52164-0465 (563)428-4635 Fayette 3649001 0062979 8/31/2025 RANDOLPH CITY OF STP CITY OF RANDOLPH CITY HALL, 107 S MAIN, PO BOX 88 RANDOLPH IA 51649 (712)625-2601 Fremont 8464425 0083861 5/31/2023 Randy Kats Feedlot Randy Kats 2718 290th Street Rock Valley IA 51247 (712)470-5831 Sioux 0400918 0075418 1/31/2024 RATHBUN REGIONAL WATER ASSOCIATION RATHBUN REGIONAL WATER ASSOCIATION, INC. 16166 HWY J29 CENTERVILLE IA 52544 (641)647-2416 Appanoose 0768002 0078310 6/30/2025 RAYMOND, CITY OF MS4 CITY OF RAYMOND 6415 LAFAYETTE ROAD RAYMOND IA 50667- (319)232-1851 Black Hawk 0965001 0044440 6/30/2024 READLYN, CITY OF STP CITY OF READLYN CITY HALL 128 MAIN ST., PO BOX 70 Readlyn IA 50668-0070 (319)279-3411 Bremer 9778152 0080721 6/30/2021 REAGENT CHEMICAL-BIG SOO REAGENT CHEMICAL 115 US HIGHWAY 202 RINGOES NJ 08551- Woodbury 5071001 0047775 3/31/2026 REASNOR CITY OF STP CITY OF REASNOR 312 NORTH ST PO BOX 68 REASNOR IA 50232 (641)793-2297 Jasper 6950001 0040266 8/31/2024 RED OAK CITY OF STP CITY OF RED OAK PO Box 475 RED OAK IA 51566 (712)623-6510 Montgomery 8464082 0083097 11/30/2025 Red Rock Cattle Kurt Kooima Red Rock Cattle 3316 Elmwood Ave. ROCK VALLEY IA 51247 (712)470-3106 Sioux 2564001 0036099 9/30/2022 REDFIELD CITY OF STP CITY OF REDFIELD CITY HALL, P.O. BOX 127 REDFIELD IA 50233 (515)833-2512 Dallas 1400108 0052331 6/30/2026 REG RALSTON LLC REG RALSTON LLC 33321 215TH ST. RALSTON IA 51459 Carroll 8300105 0077429 4/30/2023 REGIONAL WATER RURAL WATER ASSOCIATION WATER PLANT REGIONAL WATER 108 HIGHWAY 59 AVOCA IA 51521 (712)343-2413 Shelby 3870001 0033308 8/31/2024 REINBECK, CITY OF STP CITY OF REINBECK CITY HALL 414 MAIN STREET REINBECK IA 50669 (319)788-6404 Grundy 4700106 0077259 7/31/2022 RELIANT PROCESSING GALVA PLANT AIR LIQUIDE INDUSTRIAL US LP 2700 POST OAK BLVD, STE 1800 HOUSTON TX 77056 (713)624-8000 Ida 1170001 0033219 2/28/2017 REMBRANDT CITY OF STP CITY OF REMBRANDT CITY HALL, PO BOX 169 REMBRANDT IA 50576 (712)286-6100 Buena Vista 1100106 0076554 11/30/2023 REMBRANDT ENTERPRISES, INC. REMBRANDT ENTERPRISES, INC. 1419 480TH STREET REMBRANDT IA 50576 Buena Vista 9500102 0076252 8/31/2018 REMBRANDT ENTERPRISES, INC. REMBRANDT ENTERPRISES, INC. 1419 480TH ST REMBRANDT IA 50576 Winnebago 1100116 0052991 7/31/2023 REMBRANDT ENTERPRISES, INC. - LAOP REMBRANDT ENTERPRISES, INC. 1419 480th St REMBRANDT IA 50576 Buena Vista 8456481 0078387 6/30/2023 Remmerde Farms Lyle Remmerde 2691 - 340th Street Rock Valley IA 51247 (712)470-2120 Sioux 7568001 0036030 11/30/2025 REMSEN CITY OF STP CITY OF REMSEN 008 W 2ND STREET PO BOX 510 REMSEN IA 51050-0510 (712)786-2136 Plymouth 9969001 0032760 2/28/2023 RENWICK CITY OF STP CITY OF RENWICK PO BOX 115 RENWICK IA 50577-0115 (515)824-3511 Wright 5475100 0073474 8/31/2023 RESPONSIBLE TRANSPORTATION - LAOP RESPONSIBLE TRANSPORTATION, LLC 22034 200TH. STREET SIGOURNEY IA 52591 (319)804-9024 Keokuk 6480001 0036960 5/31/2026 RHODES CITY OF STP CITY OF RHODES 101 N MAIN ST PO BOX 93 RHODES IA 50234 (641)493-2139 Marshall 6670001 0032514 11/30/2023 RICEVILLE CITY OF STP CITY OF RICEVILLE CITY HALL P.O. BOX 256 RICEVILLE IA 50466-0256 (641)985-2367 Mitchell 5470001 0061328 2/28/2022 RICHLAND CITY OF STP CITY OF RICHLAND 109 N. RICHLAND STREET P.O. BOX 262 RICHLAND IA 52585-0262 (319)456-2511 Keokuk 8456546 0080527 11/30/2022 Rick Koenen Feedlot, Inc. Rick Koenen 3519 Elmwood Ave. Rock Valley IA 51247 (712)470-0233 Sioux 3175001 0066311 8/31/2021 RICKARDSVILLE CITY OF STP CITY OF RICKARDSVILLE 20026 ST. JOSEPHS DR. DURANGO IA 52039 (563)543-8890 Dubuque 2441001 0042927 7/31/2023 RICKETTS CITY OF STP CITY OF RICKETTS CITY HALL, P.O. BOX 47 RICKETTS IA 51460 Crawford 9680001 0058726 1/31/2023 RIDGEWAY CITY OF STP City of Ridgeway PO BOX 42 RIDGEWAY IA 52165- (563)737-2223 Winneshiek 1374001 0033715 11/30/2022 RINARD CITY OF STP CITY OF RINARD 340 HARVEY AVENUE RINARD IA 50538 (515)467-5654 Calhoun 3275001 0057436 4/30/2023 RINGSTED CITY OF STP CITY OF RINGSTED 112 WEST MAPLE PO BOX 278 RINGSTED IA 50578 (712)866-0877 Emmet 3754001 0041882 12/31/2022 RIPPEY CITY OF STP CITY OF RIPPEY PO BOX 230 RIPPEY IA 50235- (515)436-7713 Greene 7800301 0071269 11/30/2024 RISEN SON CHRISTIAN VILLAGE CHRISTIAN HOMES, INC. 200 N. POSTVILLE DR. LINCOLN IL 62656- Pottawattamie 7159443 0081230 6/30/2023 Ritter Cattle Company Hank Van der Waal 3568 Jackson Ave. Boyden IA 51234 (712)470-0536 O'Brien 8278002 0078832 8/31/2024 RIVERDALE, CITY OF MS4 RIVERDALE, CITY OF 110 MANOR DR. RIVERDALE IA 52722- (563)355-2511 Scott 9260001 0047945 6/30/2026 RIVERSIDE CITY OF STP CITY OF RIVERSIDE CITY HALL 21 E 1ST ST, PO BOX 188 RIVERSIDE IA 52327-0188 (319)648-3501 Washington 3655000 0079995 12/31/2022 RIVERTON WATER TREATMENT PLANT CITY OF RIVERTON 808 SUMMER AVENUE P.O. BOX 147 RIVERTON IA 51650- (712)387-2085 Fremont 3655001 0077097 12/31/2019 RIVERTON, CITY OF-STP CITY OF RIVERTON CITY HALL, P.O. BOX 147 803 Summer Ave. RIVERTON IA 51650-0147 (712)387-2085 Fremont 8271801 0076805 11/30/2022 RIVERVIEW MANOR (PRIVATE CARE FACILITY) RIVERVIEW MANOR PO BOX 503 PLEASANT VALLEY IA 52767 (563)332-4600 Scott 7048301 0077453 12/31/2025 RIVERVIEW SUBDIVISION RIVERVIEW SUBDIVISION 3649 RIVERVIEW CIR. MUSCATINE IA 52761 (563)264-0800 Muscatine 5776000 0078816 7/31/2025 ROBINS, CITY OF MS4 CITY OF ROBINS 265 SOUTH 2ND ST. ROBINS IA 52328- (319)393-0588 Linn 1769001 0063495 8/31/2023 ROCK FALLS CITY OF STP CITY OF ROCK FALLS 3 S. NOTTINGHAM ST. PO BOX 12 ROCK FALLS IA 50467-0012 (515)696-3455 Cerro Gordo 6065001 0032786 6/30/2026 ROCK RAPIDS CITY OF STP ROCK RAPIDS MUNICIPAL UTILITIES CITY HALL 310 S. 3RD AVE. ROCK RAPIDS IA 51246- (712)472-2511 Lyon 6056382 0079022 10/31/2024 Rock River Feedyards, Inc. Randy Grooters 1611 Fir Avenue Rock Rapids IA 51246 (712)470-6012 Lyon 6066387 0083267 10/31/2021 Rock River Jerseys Combined Dairy Michael and Wendy Vander Dussen 729 East Jefferson Road El Nido CA 95317 (209)564-2000 Lyon 8482001 0033057 10/31/2021 ROCK VALLEY CITY OF STP CITY OF ROCK VALLEY 1507 MAIN ST. P.O. BOX 100 ROCK VALLEY IA 51247-0100 (712)476-5707 Sioux 3430001 0058432 7/31/2022 ROCKFORD CITY OF STP CITY OF ROCKFORD 206 WEST MAIN AVENUE ROCKFORD IA 50468 (641)756-3718 Floyd

33 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Owner Name Owner Address1 Owner Address2 Owner City Owner Owner Zip Owner Phone County State 1376001 0033138 1/31/2023 ROCKWELL CITY, CITY OF STP CITY OF ROCKWELL CITY CITY HALL, 335 MAIN STREET ROCKWELL CITY IA 50579 (712)297-7041 Calhoun 1773001 0033481 7/31/2022 ROCKWELL, CITY OF STP CITY OF ROCKWELL CITY HALL, P.O. BOX 446 ROCKWELL IA 50469-0446 (641)822-4906 Cerro Gordo 8570001 0032425 12/31/2025 ROLAND CITY OF STP CITY OF ROLAND CITY HALL 202 E ASH STREET, PO BOX 288 ROLAND IA 50236-0288 (515)388-4861 Story 7639001 0032310 2/28/2025 ROLFE CITY OF STP CITY OF ROLFE CITY HALL, 319 GARFIELD ST ROLFE IA 50581-1119 (712)848-3124 Pocahontas 8456731 0079341 6/30/2021 Rolling Hills Feedlot Wayne Dekkers 4514 Cleveland Ave. Hawarden IA 51023 (712)463-2066 Sioux 8500606 0067857 1/31/2025 ROLLING HILLS MOBILE HOME PARK ROLLING HILLS MOBILE HOME PARK 31100 653RD. AVE. - LOT 119 MAXWELL IA 50161 (515)387-8954 Story 4475001 0072427 1/31/2016 ROME CITY OF STP CITY OF ROME 106 E Maple St Mount Pleasant IA 52641- (319)986-6486 Henry 3100200 0052748 4/30/2022 RON WHITE HWY 20 TRUCK PLAZA RON WHITE 3197 HIGHLAND PARK DRIVE DUBUQUE IA 52001 (563)588-1574 Dubuque 5640109 0084336 8/31/2023 ROQUETTE AMERICA INC. - LAOP ROQUETTE AMERICA INC. 1003 COMMERCIAL ST. KEOKUK IA 52632 (319)524-5757 Lee 5640101 0000256 6/30/2023 ROQUETTE AMERICA, INC. ROQUETTE AMERICA, INC. 1417 EXCHANGE STREET P.O. BOX 6647 KEOKUK IA 52632-6647 (319)524-5757 Lee 0100104 0052306 10/28/2024 Rose Acre Farms - Livestock Truck Wash - LAOP ROSE ACRE FARMS, INC PO BOX 1250 SEYMOUR IN 47274 (812)497-2557 Adair 6279001 0072311 12/31/2021 ROSE HILL CITY OF STP MAHASKA RURAL WATER SYSTEMS, INC 401 B AVE WEST PO BOX 210 OSKALOOSA IA 52577 (641)660-0332 Mahaska 3126105 0002984 8/31/2021 ROUSSELOT, INC. ROUSSELOT, INC. 2350 KERPER BOULEVARD DUBUQUE IA 52001 (563)690-1143 Dubuque 9958000 0053307 6/30/2026 ROWAN MUNICIPAL WATER SUPPLY CITY OF ROWAN 101 MAIN ST. PO BOX 182 ROWAN IA 50470 (641)853-2345 Wright 1080001 0043672 7/31/2022 ROWLEY CITY OF STP CITY OF ROWLEY CITY HALL, P.O. BOX 96 ROWLEY IA 52329-0096 (319)938-2636 Buchanan 2166001 0035408 11/30/2016 ROYAL CITY OF STP CITY OF ROYAL CITY HALL PO BOX 225 ROYAL IA 51357 (712)260-2782 Clay 2300603 0071391 9/30/2025 ROYAL PINES MHP, LLC ROYAL PINES MHP, LLC 1080 PITTSFORD VICTOR RD., STE 202 PITTSFORD NY 14534 (716)381-0570 Clinton 8460416 0084069 7/31/2023 Royal Ridge Dairy (formerly Double V Dairy, LLC) Royal Ridge Dairy, LLC 3154 Fig Ave. Rock Valley IA 51247 (231)878-3687 Sioux 1856879 0079065 12/31/2019 RTCP Farm Partnership (Spring Valley Ranch) Spring Valley Ranch (Mr. Richard Lester) 1095 Hollering Hill Road Wyoming DE 19934 (302)584-3584 Cherokee 3440001 0061344 5/31/2016 RUDD CITY OF STP CITY OF RUDD CITY HALL, PO BOX 78 RUDD IA 50471-0078 (641)395-2760 Floyd 7774001 0063355 4/30/2022 RUNNELLS CITY OF STP CITY OF RUNNELLS PO BOX 33 110 BROWN ST. RUNNELLS IA 50237-0033 Polk 8400701 0083283 7/31/2025 RURAL WATER SYSTEM #1 - PLANT #2 RURAL WATER SYSTEM #1 4438 380TH ST HOSPERS IA 51238 (800)761-7971 Sioux 8400702 0083291 2/28/2025 RURAL WATER SYSTEM #1 - PLANT #3 RURAL WATER SYSTEM #1 4438 380TH ST. HOSPERS IA 51238 Sioux 1456442 0052403 12/31/2021 Russ Pudenz Farms, Inc. Russ Pudenz 18889 130th Street Carroll IA 51401 (712)830-8473 Carroll 5939001 0043176 12/31/2024 RUSSELL CITY OF STP CITY OF RUSSELL 115 SOUTH MAPLE RUSSELL IA 50238-0545 (641)535-2494 Lucas 7556723 0079600 7/31/2026 Russell Schmidt Feedlot Russell Schmidt 25737 Highway C-12 Ireton IA 51027 (712)540-2337 Plymouth 7465001 0032441 2/28/2026 RUTHVEN CITY OF STP CITY OF RUTHVEN CITY HALL PO BOX 160 RUTHVEN IA 51358-0160 (712)837-5355 Palo Alto 4675001 0061239 2/28/2022 RUTLAND CITY OF STP CITY OF RUTLAND CITY HALL, PO BOX 68 201 SHERIDAN AVE RUTLAND IA 50582-0068 (515)332-2525 Humboldt 2864001 0041785 3/31/2025 RYAN CITY OF STP CITY OF RYAN CITY HALL, P.O. BOX 40 RYAN IA 52330-0040 (563)932-2051 Delaware 7856416 0079171 7/31/2026 S & B Feedyard S & B FEEDYARD INC 35714 ASPEN RD. MACEDONIA IA 51549 (712)486-2494 Pottawattamie 1160248 0077755 4/30/2026 S & S Farms, Inc. S & S FARMS, INC. 1378 650TH ST. STORM LAKE IA 50588 (712)299-5731 Buena Vista 5456216 0077887 3/31/2023 S + S Farm Mark Steinke 12450 130th Street GIBSON IA 50104 (641)660-4723 Keokuk 4975001 0032867 3/31/2024 SABULA CITY OF STP CITY OF SABULA PO BOX 331, 411 BROAD STREET SABULA IA 52070-0331 (563)687-2420 Jackson 8150001 0033090 5/31/2026 SAC CITY, CITY OF STP CITY OF SAC CITY CITY HALL, P.O. Box 37 SAC CITY IA 50583 (712)662-7593 Sac 3181501 0077984 9/30/2021 SAGEVILLE SCHOOL STP DUBUQUE COMMUNITY SCHOOL DISTRICT 2300 CHANEY ROAD DUBUQUE IA 52001-3095 (563)588-5270 Dubuque 9176001 0072451 9/30/2024 SAINT MARYS CITY OF STP CITY OF ST. MARYS CITY HALL, P.O. BOX 47 SAINT MARYS IA 50241-0047 (641)297-2104 Warren 2277002 0071072 7/31/2022 SAINT OLAF CITY OF STP CITY OF SAINT OLAF CITY HALL, PO BOX 37 SAINT OLAF IA 52072-0037 (319)783-7777 Clayton 4478001 0047996 1/31/2023 SALEM CITY OF STP CITY OF SALEM CITY HALL, PO BOX 179 SALEM IA 52649- (319)258-4531 Henry 9770001 0032913 8/31/2023 SALIX CITY OF STP CITY OF SALIX CITY HALL, P.O. BOX 240 SALIX IA 51052-0240 (712)946-5645 Woodbury 6800602 0064041 6/30/2023 SAMPLES COVENANT PARK DUSTIN & LESLIE SAMPLE 402 N CLINTON ST. ALBIA IA 52531 (641)932-3054 Monroe 7165001 0032522 6/30/2025 SANBORN CITY OF STP CITY OF SANBORN CITY HALL, P.O. BOX 548 SANBORN IA 51248-0548 (712)930-3842 O'Brien 5600608 0065391 3/31/2019 SANDUSKY MOBILE HOME VILLAGE TIM HARDY SANDUSKY MOBILE HOME VILLAGE 2715 340TH. STREET KEOKUK IA 52632 (319)524-5355 Lee 3600201 0077461 12/31/2025 SAPP BROS.TRAVEL CENTER ALLEN J. MARSH I-29 HWY 2 SID, LLC 20953 N. GRAND STAIRCASE DR. SURPRISE AZ 85387-2795 (402)690-2000 Fremont 9400900 0059200 2/28/2026 SAVAGE SANITARY DISTRICT STP SAVAGE SANITARY DISTRICT 820 CENTRAL AVE. FORT DODGE IA 50501 (515)955-3428 Webster 7727011 0079847 5/31/2025 SAYLORVILLE WATER TREATMENT PLANT DES MOINES WATER WORKS 2201 GEORGE FLAGG PARKWAY DES MOINES IA 50321- (515)323-6218 Polk 5200405 0052791 9/30/2026 SCALES POINTE CAMPGROUND & MARINA LAKESHORE ENTERTAINMENT INC 1850 SCALES BEND ROAD NORTH LIBERTY IA 52317 (319)626-2171 Johnson 2200901 0065749 8/31/2016 SCENIC ACRES CARE FACILITY CLAYTON COUNTY BOARD OF SUPERVISORS 200 E. BRIDGE STREET ELKADER IA 52043- (563)245-2166 Clayton 8156001 0042935 11/30/2021 SCHALLER CITY OF STP CITY OF SCHALLER CITY CLERK PO BOX 120 SCHALLER IA 51053 (712)275-4742 Sac 8356843 0079511 5/31/2026 Schechinger Farms, Inc. Kenny Schechinger 1335 Ironwood Road Harlan IA 51537 (712)579-3035 Shelby 2446001 0036170 1/31/2022 SCHLESWIG CITY OF STP CITY OF SCHLESWIG PO BOX 276, 111 2ND STREET SCHLESWIG IA 51461- (712)676-3361 Crawford 7556231 0080471 10/31/2022 Schnepf Farms Loren Schnepf 39367 150th Street LeMars IA 51031 (712)540-3152 Plymouth 3759001 0032409 9/30/2025 SCRANTON CITY OF STP CITY OF SCRANTON CITY CLERK CITY HALL SCRANTON IA 51462-0428 (712)652-3888 Greene 7955001 0062553 7/31/2025 SEARSBORO CITY OF STP CITY OF SEARSBORO 400 3RD ST. SEARSBORO IA 50242 (641)593-6590 Poweshiek 9774001 0078859 11/30/2021 SERGEANT BLUFF, CITY OF MS4 SERGEANT BLUFF, CITY OF 401 4TH ST. SERGEANT BLUFF IA 51054- (712)943-4344 Woodbury 9774000 0052005 10/31/2023 SERGEANT BLUFF, CITY OF WTP CITY OF SERGEANT BLUFF PO BOX 703 SERGEANT BLUFF IA 51054 (712)943-9602 Woodbury 2326105 0000183 4/30/2023 SETHNESS PRODUCTS COMPANY ROQUETTE AMERICA, INC. 1003 S 5TH ST., PO BOX 6647 KEOKUK IA 52632-6647 Clinton 9368001 0055301 3/31/2016 SEYMOUR CITY OF STP CITY OF SEYMOUR CITY HALL, 109 N 5TH STREET SEYMOUR IA 52590-1499 (641)898-2966 Wayne 8165218 0083836 10/31/2022 SFI, Inc. Seth Smith 2681 190th Street Nemaha IA 50567 (712)636-4464 Sac 7380001 0069477 6/30/2020 SHAMBAUGH CITY OF STP CITY OF SHAMBAUGH CITY HALL, 307 MAIN ST. SHAMBAUGH IA 51651-9998 (712)542-3397 Page 8770001 0076571 5/31/2016 SHARPSBURG,CITY-STP-(SIRWA) SOUTHERN IOWA RURAL WATER ASSOCIATION 1391 190TH STREET CRESTON IA 50801 (641)782-5744 Taylor 3570001 0036005 1/31/2025 SHEFFIELD CITY OF STP CITY OF SHEFFIELD CITY HALL, PO BOX 252 SHEFFIELD IA 50475-0252 (641)892-4718 Franklin 8369001 0036579 8/31/2020 SHELBY CITY OF STP CITY OF SHELBY CITY HALL, P.O. BOX 186 SHELBY IA 51570-0186 (712)544-2404 Shelby 7170001 0032662 3/31/2026 SHELDON CITY OF STP CITY OF SHELDON CITY HALL, PO BOX 276 SHELDON IA 51201-0276 (712)324-4651 O'Brien 1286001 0033359 2/28/2022 SHELL ROCK CITY OF STP CITY OF SHELL ROCK CITY HALL, P.O. BOX 522 SHELL ROCK IA 50670-0522 (319)885-6555 Butler 0670001 0033332 5/31/2006 SHELLSBURG CITY OF STP CITY OF SHELLSBURG CITY CLERK-CITY HALL 108 MAIN ST SW PO BOX J SHELLSBURG IA 52332 (319)436-2954 Benton 3659001 0032328 2/28/2021 SHENANDOAH CITY OF STP CITY OF SHENANDOAH CITY HALL, P.O. BOX 338 SHENANDOAH IA 51601-0338 (712)246-4411 Fremont 7383000 0079081 10/31/2018 SHENANDOAH, CITY OF WTP City of Shenandoah 500 W. Clarinda Ave. Shenandoah IA 51601 Page 3183001 0056952 12/31/2014 SHERRILL CITY OF STP (EAST) CITY OF SHERRILL CITY HALL 5309 SOUTH MOUND ROAD SHERRILL IA 52073-9998 (319)552-2298 Dubuque 7245001 0032841 7/31/2025 SIBLEY CITY OF STP CITY OF SIBLEY 808 3RD AVE. SIBLEY IA 51249 (712)754-2541 Osceola 3661001 0035971 5/31/2020 SIDNEY CITY OF STP CITY OF SIDNEY CITY HALL, 604 CLAY STREET P.O. BOX 335 SIDNEY IA 51652-0335 (712)374-2223 Fremont 5600104 0074951 3/31/2019 SIEMENS GAMESA RENEWABLE ENERGY, INC. SIEMENS GAMESA RENEWABLE ENERGY, INC. 2597 HWY 61 FORT MADISON IA 52627 (319)463-2031 Lee 5475002 0036595 6/30/2020 SIGOURNEY CITY OF STP (EAST) CITY OF SIGOURNEY CITY HALL, 100 N. MAIN ST. SIGOURNEY IA 52591 (641)622-3080 Keokuk 5625111 0081264 9/30/2024 SILGAN CONTAINERS MANUFACTURING CORPORATION SILGAN CONTAINERS MANUFACTURING CORP. 21600 OXNARD ST, STE 1600 WOODLAND HILLS CA 91367 Lee 6575001 0079774 2/28/2022 SILVER CITY, CITY OF STP CITY OF SILVER CITY 417 Main St., PO Box 37 Silver City IA 51571 (712)525-1090 Mills 7861149 0078409 3/31/2025 SILVER CREEK FEEDERS Roger Chambers Silver Creek Feeders 32665 Beechnut Rd. Treynor IA 51575-7353 (402)680-5448 Pottawattamie 1800100 0004634 9/30/2026 SIMONSEN RENDERING, LLC - LAOP SCOTT DARLING SIMONSEN RENDERING, LLC 214 S 3RD STREET PENDER NE 68047 (402)385-3003 Cherokee 1281101 0053018 2/28/2025 SINCLAIR ELEVATOR INC. SINCLAIR ELEVATOR INC. 32746 SINCLAIR AVE PARKERSBURG IA 50665 (319)346-1954 Butler 8486002 0033731 2/28/2026 SIOUX CENTER CITY OF STP CITY OF SIOUX CENTER 335 1ST AVENUE NW SIOUX CENTER IA 51250-1895 (712)722-0761 Sioux 8486000 0079383 4/30/2023 Sioux Center WTP City of Sioux Center 335 1st Ave NW Sioux Center IA 51250- (712)722-0761 Sioux 9778202 0069493 1/31/2023 SIOUX CITY COMMUNITY SCHOOL DISTRICT SIOUX CITY COMMUNITY SCHOOL DISTRICT 627 4TH ST SIOUX CITY IA 51101 Woodbury 9778002 0078662 11/30/2022 SIOUX CITY, CITY OF MS4 CITY OF SIOUX CITY 405 6TH ST. PO BOX 447 SIOUX CITY IA 51102 (712)279-6349 Woodbury 9778001 0043095 11/30/2025 SIOUX CITY, CITY OF STP CITY OF SIOUX CITY CITY HALL, PO BOX 447 SIOUX CITY IA 51102-0447 (712)279-6102 Woodbury 1175001 0042951 3/31/2024 SIOUX RAPIDS CITY OF STP CITY OF SIOUX RAPIDS CITY HALL, P.O. BOX 473 SIOUX RAPIDS IA 50585-0473 (712)283-2737 Buena Vista 8400114 0076791 6/30/2025 SIOUXLAND ENERGY COOPERATIVE SIOUXLAND ENERGY COOPERATIVE 3890 GARFIELD AVENUE SIOUX CENTER IA 51250 (712)722-4904 Sioux 8580001 0033740 5/31/2020 SLATER CITY OF STP CITY OF SLATER 105 GREENE ST. P.O. BOX 538 SLATER IA 50244-0538 (515)685-2531 Story 9780001 0032361 2/29/2024 SLOAN CITY OF STP CITY OF SLOAN CITY HALL, PO BOX 1 SLOAN IA 51055-0001 (712)428-3348 Woodbury 9783001 0056341 4/30/2026 SMITHLAND CITY OF STP CITY OF SMITHLAND CITY HALL, P.O. BOX 187 SMITHLAND IA 51056 (712)889-2220 Woodbury 6749001 0061743 10/31/2023 SOLDIER CITY OF STP CITY OF SOLDIER CITY HALL, P.O. BOX 45 SOLDIER IA 51572 (712)884-2266 Monona 5282001 0036978 4/30/2022 SOLON CITY OF STP CITY OF SOLON CITY HALL, 101 N IOWA ST. SOLON IA 52333 (319)624-3755 Johnson

34 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Owner Name Owner Address1 Owner Address2 Owner City Owner Owner Zip Owner Phone County State 5478001 0084018 9/30/2022 SOUTH ENGLISH, CITY OF STP CITY OF SOUTH ENGLISH PO BOX 112 SOUTH ENGLISH IA 52335 (319)721-6064 Keokuk 5502600 0065269 9/23/2006 SOUTH OAK ESTATES MHP (NOW BURR OAK MOTEL) NEAL MODI BURR OAK MOTEL 1905 HIGHWAY 69 ALGONA IA 50511 Kossuth 8500302 0068276 10/31/2022 SOUTH SQUAW VALLEY ASSOCIATION SOUTH SQUAW VALLEY ASSOCIATION DANNY JOHNSON - PRESIDENT 5504 VALLEY ROAD AMES IA 50014 (515)450-7784 Story 1100701 0083305 2/28/2017 SOUTH WEST SHORELINE SANITARY DISTRICT SOUTH WEST SHORELINE SANITARY SD 118 SCOTT STREET STORM LAKE IA 50588- (712)732-2029 Buena Vista 5500301 0068284 6/30/2026 SOUTHDALE ADDITION SOUTHDALE ADDITION HOA 206 EVERGREEN RD ALGONA IA 50511 (515)295-6170 Kossuth 4200601 0067679 8/12/2007 SOUTHPARK ESTATES WAYNE & LISA DEWEY 14798 JJ AVENUE IOWA FALLS IA 50126-8552 (641)648-5597 Hardin 7800106 0081043 12/31/2024 SOUTHWEST IOWA RENEWABLE ENERGY SOUTHWEST IOWA RENEWABLE ENERGY 10868 189TH ST COUNCIL BLUFFS IA 51503 (712)366-0392 Pottawattamie 7700802 0052799 8/31/2023 SOUTHWEST POLK WATER SERVICE SOUTHWEST POLK WATER SERVICE 1485 NE 70TH AVE PO BOX 555 ANKENY IA 50021 (515)289-2345 Polk 8000702 0083968 9/30/2023 SOUTHWEST RINGGOLD COUNTY WWTF - SIRWA SOUTHERN IOWA RURAL WATER ASSOCIATION 1391 190TH STREET CRESTON IA 50801- (641)782-5744 Ringgold 2171004 0021059 2/29/2024 SPENCER, CITY OF STP City of Spencer City Hall 418 2nd Avenue W Spencer IA 51301-3801 (712)580-7200 Clay 9686001 0042749 6/30/2026 SPILLVILLE CITY OF STP CITY OF SPILLVILLE CITY HALL, PO BOX 276 SPILLVILLE IA 52168-0276 (563)562-3425 Winneshiek 4982001 0050741 6/30/2023 SPRAGUEVILLE CITY OF STP CITY OF SPRAGUEVILLE 127 E MAIN ST SPRAGUEVILLE IA 52074 (563)689-6162 Jackson 3100606 0066087 1/31/2023 SPRING VALLEY MOBILE PARK SPRING VALLEY INVESTMENTS, INC. 7768 RAPHAEL DRIVE DUBUQUE IA 52003 (563)583-2008 Dubuque 4984001 0033154 8/31/2022 SPRINGBROOK CITY OF STP CITY OF SPRINGBROOK CITY HALL, P.O. BOX 55 SPRINGBROOK IA 52075 (563)872-3210 Jackson 5782002 0064726 4/30/2026 SPRINGVILLE CITY OF STP CITY OF SPRINGVILLE 304 BROADWAY SPRINGVILLE IA 52336- (319)854-6428 Linn 7000108 0074101 8/31/2024 SSAB IOWA INC. SSAB IOWA INC. 1770 BILL SHARP BLVD MUSCATINE IA 52761 (319)381-5300 Muscatine 6161001 0039896 11/30/2020 ST CHARLES CITY OF STP CITY OF ST. CHARLES CITY HALL, P.O. BOX 118 ST. CHARLES IA 50240-0118 (641)396-2545 Madison 4979001 0040304 11/30/2022 ST DONATUS CITY OF STP CITY OF ST. DONATUS PO BOX 73 ST. DONATUS IA 52071-0073 (563)773-8191 Jackson 5675001 0076716 6/30/2016 ST PAUL CITY OF STP CITY OF ST PAUL CITY HALL, 1290 MAIN STREET ST. PAUL IA 52657-0054 (319)469-4212 Lee 6673001 0033723 4/30/2024 ST. ANSGAR CITY OF STP CITY OF ST. ANSGAR CITY HALL, P.O. BOX 490 ST. ANSGAR IA 50472-0490 (641)713-4921 Mitchell 6482001 0077291 9/30/2018 ST. ANTHONY CITY OF (IRUA) IOWA REGIONAL UTILITIES ASSOCIATION 1351 IOWA SPEEDWAY DR. NEWTON IA 50208 (641)792-7011 Marshall 3368001 0074705 5/31/2023 ST. LUCAS CITY OF STP CITY OF ST. LUCAS PO BOX 244 ST. LUCAS IA 52166-0244 (563)778-2737 Fayette 6677001 0035254 10/31/2021 STACYVILLE, CITY OF STP CITY OF STACYVILLE CITY HALL, P.O. BOX 184 STACYVILLE IA 50476-0184 (641)737-2428 Mitchell 8456480 0080110 11/30/2021 Stan Eisma Feedlot Stan Eisma 4863 Goldfinch Ave. Maurice IA 51036 (712)441-260 Sioux 4045001 0032743 1/31/2025 STANHOPE CITY OF STP CITY OF STANHOPE CITY HALL P.O. BOX 128 STANHOPE IA 50246-0128 (515)826-3290 Hamilton 1089001 0054178 11/30/2025 STANLEY CITY OF STP CITY OF STANLEY 115 WEST MAIN STANLEY IA 50671 (319)634-3337 Buchanan 6965001 0042978 9/24/2014 STANTON CITY OF STP CITY OF STANTON CITY HALL, P.O. BOX 189 STANTON IA 51573-0189 (712)829-2212 Montgomery 1681001 0033758 9/30/2026 STANWOOD CITY OF STP CITY OF STANWOOD CITY CLERK, CITY HALL PO BOX 146, 209 E BROADWAY STANWOOD IA 52337 (563)889-0011 Cedar 3300501 0053234 1/31/2026 STARMONT COMMUNITY SCHOOL DISTRICT STARMONT CSD 3202 40th STREET ARLINGTON IA 50606 (563)933-4598 Fayette 6484001 0041807 2/29/2024 STATE CENTER CITY OF STP CITY OF STATE CENTER 118 East Main Street, PO Box 668 STATE CENTER IA 50247-0668 (641)483-2559 Marshall 3200105 0052462 10/31/2020 STATELINE COOPERATIVE STATELINE COOPERATIVE 5265 - 206TH STREET ARMSTRONG IA 50541 Emmet 4289001 0033324 12/31/2024 STEAMBOAT ROCK CITY OF STP CITY OF STEAMBOAT ROCK CITY CLERK, CITY HALL P.O. BOX 366 STEAMBOAT ROCK IA 50672 (515)868-2240 Hardin 4764288 0080462 11/30/2022 Steve Meyer Feedlot (Formerly Meyer Brothers Feedlot) Steve Meyer 5273 120th Street Holstein IA 51025 (712)368-2166 Ida 8973001 0061603 5/31/2016 STOCKPORT CITY OF STP CITY OF STOCKPORT CITY HALL, P.O. BOX 15 STOCKPORT IA 52651-0015 (319)796-2135 Van Buren 7063001 0033464 1/31/2016 STOCKTON CITY OF STP CITY OF STOCKTON P.O. BOX 307 STOCKTON IA 52769-0307 (563)785-4708 Muscatine 1178001 0032484 6/30/2024 STORM LAKE CITY OF STP CITY OF STORM LAKE CITY CLERK, CITY HALL P.O. BOX 1086 STORM LAKE IA 50588 (712)732-8000 Buena Vista 1178003 0078638 11/30/2025 STORM LAKE, CITY OF MS4 STORM LAKE, CITY OF 620 ERIE ST. PO BOX 1086 STORM LAKE IA 50588- (712)732-8000 Buena Vista 8584001 0035882 7/31/2024 STORY CITY CITY OF STP CITY OF STORY CITY CITY HALL, 504 BROAD STREET STORY CITY IA 50248 (515)733-2121 Story 3880001 0084107 6/30/2017 STOUT CITY OF STP IOWA REGIONAL UTILITIES ASSOCIATION 1351 IOWA SPEEDWAY DR. NEWTON IA 50208 (641)792-7011 Grundy 1856642 0080021 2/28/2022 Stowater Feedlot, Inc. ELAINE K. UTESCH TRIPLE U RANCH, LLC 4208 100TH ST. WASHTA IA 51061 Cherokee 9480001 0035980 9/6/2012 STRATFORD CITY OF STP CITY OF STRATFORD CITY HALL 805 SHAKESPEARE AVE. STRATFORD IA 50249-0218 (515)838-2311 Webster 2279001 0042757 11/30/2024 STRAWBERRY POINT CITY OF STP CITY OF STRAWBERRY POINT CITY CLERK - CITY HALL 111 COMMERCIAL ST STRAWBERRY POINT IA 52076 (563)933-4482 Clayton 2839100 0063533 1/31/2025 STRYTEN MANCHESTER, LLC STRYTEN MANCHESTER, LLC 913 SOUTH 10TH ST. MANCHESTER IA 52057 (563)927-4501 Delaware 3973001 0041858 1/31/2025 STUART CITY OF STP CITY OF STUART PO BOX 370 STUART IA 50250-0370 (515)523-1455 Guthrie 0100103 0052242 9/30/2025 STUART EGG FARM - LAOP ROSE ACRE FARMS, INC. 1657 W TIPTON ST SEYMOUR IN 47274 (812)497-2557 Adair 5200907 0083674 7/31/2024 SUGAR BOTTOM RECREATION AREA US ARMY CORPS OF ENGINEERS 2850 PRAIRIE DU CHIEN ROAD NE IOWA CITY IA 52240- (319)338-3543 Johnson 5076001 0041963 2/28/2026 SULLY CITY OF STP CITY OF SULLY CITY HALL P.O. BOX 247 SULLY IA 50251 Jasper 0970001 0033766 8/31/2022 SUMNER CITY OF STP CITY OF SUMNER CITY HALL, P.O. BOX 236 SUMNER IA 50674-0236 (319)578-3242 Bremer 8000701 0069469 6/30/2020 SUN VALLEY SANITARY DISTRICT LAGOON SUN VALLEY SANITARY DISTRICT SUN VALLEY LAKE, PO BOX 27 ELLSTON IA 50074 (641)772-4550 Ringgold 3100400 0068748 8/31/2019 SUNDOWN MOUNTAIN RESORT M.G.V. Corp ATTN: MARK GORDON, GENERAL MANAGER 16991 ASBURY ROAD DUBUQUE IA 52002 (563)556-6676 Dubuque 7714601 0068071 3/31/2022 SUNNYBROOK MHC LLC (HAVENPARK MANAGEMENT) HAVENPARK COMMUNITIES 51 W CENTER ST., STE 600 OREM UT 84057 (530)321-7341 Polk 7200802 0079596 2/28/2025 SUNRISE FARMS, INC. - LAOP PHILIP SONSTEGARD SUNRISE FARMS, INC. 2060 WHITE AVE HARRIS IA 51345 (712)735-6010 Osceola 8456715 0079103 6/30/2025 Sunrise Feedlot, Inc. Floyd Jansma Jr. Sunrise Feedlot, Inc. 2919 Grant Ave. Hull IA 51239 (712)470-0074 Sioux 5200602 0067911 12/31/2025 SUNRISE MOBILE HOME HAVENPARK MANAGEMENT 51 W. CENTER ST., SUITE 600 OREM UT 84057 Johnson 3100612 0073334 9/30/2021 SUPER 20 MOBILE HOME PARK SUPER 20 MOBILE HOME PARK, INC. 14186 SAGEWOOD DRIVE DUBUQUE IA 52002 (563)590-5907 Dubuque 7177001 0036129 2/28/2022 SUTHERLAND CITY OF STP CITY OF SUTHERLAND PO BOX 8 SUTHERLAND IA 51058 (712)446-2243 O'Brien 1778001 0073903 2/28/2023 SWALEDALE, CITY STP CERRO GORDO COUNTY COUNTY COURTHOUSE 220 NORTH WASHINGTON AVE. MASON CITY IA 50401 (515)421-3023 Cerro Gordo 5584001 0047813 5/31/2023 SWEA CITY CITY OF STP CITY OF SWEA CITY CITY CLERK - CITY HALL PO BOX 327 SWEA CITY IA 50590 (515)272-4606 Kossuth 5285001 0033774 3/31/2026 SWISHER CITY OF STP CITY OF SWISHER 66 2ND ST. SW P.O. BOX 279 SWISHER IA 52338-0279 (319)857-4539 Johnson 3100600 0064009 9/30/2021 TABLE MOUND MHP IADU TABLEMOUND MHP, LLC 110 NW 2ND ST. PO BOX 457 CEDAREDGE CO 81413 (970)808-0800 Dubuque 3667001 0038440 4/30/2020 TABOR CITY OF STP CITY OF TABOR CITY HALL, P.O. BOX 309 TABOR IA 51653-0309 (712)629-2295 Fremont 8670002 0043681 11/30/2023 TAMA CITY OF STP CITY OF TAMA 305 SIEGEL STREET TAMA IA 52339-2317 (641)484-3822 Tama 8670100 0000841 4/30/2021 TAMA PAPERBOARD, LLC dba GREIF TAMA PAPERBOARD, LLC dba GREIF 3100 JOE JERKINS BOULEVARD AUSTELL GA 30106-3227 (770)732-3399 Tama 8670000 0052527 2/28/2021 TAMA WATER TREATMENT PLANT (POWESHIEK WATER ASSOC) POWESHIEK WATER ASSOCIATION 125 INDUSTRIAL DR. BROOKLYN IA 52211 Tama 6200110 0079553 2/19/2025 TASSEL RIDGE WINERY - LAOP ROBERT WERSEN 100 INTERPOWER AVE OSKALOOSA IA 52577- Mahaska 5000801 0073181 5/31/2023 TEEN CHALLENGE OF THE MIDLANDS-STP TEEN CHALLENGE OF THE MIDLANDS 900 N. LEAGUE ROAD P. O. BOX 185 COLFAX IA 50054-0185 (515)674-3713 Jasper 1479001 0033782 8/31/2021 TEMPLETON CITY OF STP CITY OF TEMPLETON CITY CLERK - CITY HALL PO BOX 106 TEMPLETON IA 51463 (712)669-3443 Carroll 1479101 0053056 12/31/2023 TEMPLETON RYE DISTILLERY TEMPLETON RYE DISTILLERY 209 E 3RD ST TEMPLETON IA 51463 Carroll 1863496 0080420 8/31/2022 Tentinger Feedlot Nathan Tentinger 4623 J Avenue Cleghorn IA 51041 (712)436-2663 Cherokee 3500900 0062472 9/30/2021 TERRACE HILL SANITARY DISTRICT STP TERRACE HILL SANITARY DISTRICT STP 1014 FEDERAL NORTH HAMPTON IA 50441 (641)456-2288 Franklin 3080001 0036609 6/30/2023 TERRIL CITY OF STP CITY OF TERRIL CITY HALL, P.O. BOX 125 TERRIL IA 51364-0125 (712)853-6227 Dickinson 8463065 0083992 5/31/2023 Terry Kooima Feedlot Terry Kooima 3219 Eagle Ave. Rock Valley IA 51247 (712)470-0886 Sioux 8200100 0001180 6/30/2022 TEXPAR ENERGY, LLC TEXPAR ENERGY LLC 920 10TH AVENUE NORTH ONALASKA WI 54650- (608)779-6608 Scott 6066472 0053196 7/31/2025 THANE FLUIT FEEDLOT THANE FLUIT 1985 COOLIDGE AVE. INWOOD IA 51240 Lyon 8858001 0079936 6/30/2017 THAYER CITY OF STP SOUTHERN IOWA RURAL WATER ASSOCIATION 1391 190TH ST. CRESTON IA 50801 (641)782-5744 Union 9000106 0083453 10/31/2016 THE AMERICAN BOTTLING COMPANY THE AMERICAN BOTTLING COMPANY 14955 TRUMAN STREET OTTUMWA IA 52501- (641)683-5401 Wapello 2424103 0079456 1/31/2022 THE ANDERSONS MARATHON HOLDINGS, LLC THE ANDERSONS MARATHON HOLDINGS, LLC 1947 BRIARFIELD BLVD. MAUMEE OH 43537 Crawford 5715145 0082236 5/31/2024 THE EASTERN IOWA AIRPORT CITY OF CEDAR RAPIDS 50 SECOND AVENUE CEDAR RAPIDS IA 52401- Linn 3126803 0084115 6/30/2022 THE GRAND OPERA HOUSE THE GRAND OPERA HOUSE 135 WEST 8TH ST DUBUQUE IA 52001- (563)588-4356 Dubuque 5625103 0001171 10/31/2025 THE SCOTTS COMPANY THE SCOTTS COMPANY 1910 48TH. STREET FORT MADISON IA 52627 (319)376-5000 Lee 7700911 0066966 3/31/2025 THOMAS MITCHELL PARK THOMAS MITCHELL PARK POLK CO. CONSERVATION BOARD 11407 NW JESTER PARK DRIVE GRANGER IA 50109 (515)323-5300 Polk 9585001 0068683 2/28/2023 THOMPSON CITY OF STP CITY OF THOMPSON CITY HALL, PO BOX 25 THOMPSON IA 50478- (641)584-2785 Winnebago 4680001 0058581 7/31/2021 THOR CITY OF STP CITY OF THOR CITY CLERK, CITY HALL P.O. BOX 25 THOR IA 50591-0025 (515)378-3141 Humboldt 1781001 0033201 1/31/2023 THORNTON CITY OF STP CITY OF THORNTON CITY HALL PO BOX 88 THORNTON IA 50479-0088 (641)998-2415 Cerro Gordo 8800401 0074594 8/31/2019 THREE MILE LAKE CAMPGROUND-STP UNION COUNTY CONSERVATION BOARD 1577 CREAMERY ROAD AFTON IA 50830- (641)347-5100 Union 3671000 0052637 12/31/2022 THURMAN, CITY OF WATER WORKS CITY OF THURMAN 800 FILMORE STREET P.O. BOX 186 THURMAN IA 51654 Fremont 5288001 0036617 10/31/2025 TIFFIN CITY OF STP CITY OF TIFFIN 201 MAIN STREET PO BOX 259 TIFFIN IA 52340 (319)545-2370 Johnson 2300300 0069116 1/14/2007 TIMBER CREEK ESTATES HOMEOWNER'S ASSOCIATION, INC TIMBER CREEK ESTATES HOA C/O SCOTT TARCHINSKI, PRES. 2985 265TH STREET DEWITT IA 52742 (563)659-5320 Clinton 5200303 0069108 7/31/2021 TIMBER TRAILS ESTATES HOMEOWNER'S ASSOCIATION TIMBER TRAILS ESTATES HOA P.O. BOX 2031 IOWA CITY IA 52240 (319)351-2230 Johnson

35 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Owner Name Owner Address1 Owner Address2 Owner City Owner Owner Zip Owner Phone County State 6400601 0068659 9/30/2021 TIMBER WOLF VALLEY MHP KLT PROPERTIES, LLC 12122 N ROUTE 84 PORT BYRON IL 61275 (641)753-4017 Marshall 5200311 0070076 6/30/2021 TIMBERLAKE HOMEOWNERS ASSOCIATION TIMBERLAKE HOMEOWNERS ASSOCIATION 2628 TRAIL RIDGE DRIVE NW SWISHER IA 52338 (319)361-5549 Johnson 2900606 0068250 3/31/2016 TIMBERLINE ESTATES, LTD TIMBERLINE ESTATES, LTD. 3660 CENTER ROAD, UNIT 301 BRUNSWICK OH 44212 (440)838-4868 Des Moines 8080001 0074471 8/31/2022 TINGLEY, CITY-OF-STP-SIRWA SOUTHERN IOWA RURAL WATER ASSOCIATION 1391 190TH STREET CRESTON IA 50801 (641)782-5744 Ringgold 1689001 0032727 5/31/2021 TIPTON CITY OF STP (WEST) CITY OF TIPTON (WEST) 407 LYNN STREET TIPTON IA 52772-1633 (319)886-6187 Cedar 5588001 0033375 10/31/2023 TITONKA CITY OF STP CITY OF TITONKA PO BOX 382 TITONKA IA 50480-0382 (515)928-2850 Kossuth 8676001 0033103 6/30/2022 TOLEDO CITY OF STP CITY OF TOLEDO CITY HALL, 1007 S. PROSPECT DR. TOLEDO IA 52342-0234 (641)484-2160 Tama 2383001 0076996 10/31/2023 TORONTO, CITY OF-STP CITY OF TORONTO CITY HALL, 300 MILL STREET TORONTO IA 52777 (563)678-2323 Clinton 5715144 0079987 6/30/2026 TOWN CENTRE WFRBS 2013-C18 THIRD AVENUE SE, LLC C/O CUSHMAN & WAKEFIELD 3737 WOODLAND AVE, STE 100 WEST DES MOINES IA 50266 (515)778-2605 Linn 6382001 0081647 8/31/2026 TRACY CITY OF STP (MAHASKA RURAL WATER SYSTEMS, INC.) MAHASKA RURAL WATER SYSTEMS, INC. PO BOX 210 OSKALOOSA IA 52577 (641)673-8851 Marion 8681001 0035033 1/31/2023 TRAER MUNICIPAL UTILITIES Traer Municipal Utilities 649 SECOND STREET TRAER IA 50675 (319)478-8760 Tama 8456485 0080594 11/30/2025 Trans Ova Genetics Trans Ova Genetics 2938 380th Street Sioux Center IA 51250 (712)722-3586 Sioux 7866002 0039977 9/30/2022 TREYNOR CITY OF STP (NORTHWEST) CITY OF TREYNOR 7 SOUTH EYBERG AVENUE P.O. BOX 234 TREYNOR IA 51575 (712)487-3787 Pottawattamie 5485500 0068390 10/31/2002 TRI-COUNTY COMMUNITY SCHOOL TRI-COUNTY COMMUNITY SCHOOL BOX 17 THORNBURG IA 50255 (641)634-2408 Keokuk 9760300 0077780 5/31/2022 Triple U Ranch, LLC CEU Land & Cattle LLC / K&B Ranch LLC Triple U Ranch, LLC 4208 100th St. Washta IA 51061 (712)372-4386 Woodbury 0975001 0033120 4/30/2026 TRIPOLI CITY OF STP CITY OF TRIPOLI CITY HALL P.O. BOX 587 TRIPOLI IA 50676-0587 (319)882-4801 Bremer 9779803 0084034 10/31/2022 Trosper-Hoyt County Services Building WOODBURY COUNTY BUILDING SERVICES 620 DOUGLAS STREET SIOUX CITY IA 51101- (712)279-6539 Woodbury 5786901 0041262 1/31/2024 TROY MILLS SANITARY DISTRICT TROY MILLS SANITARY DISTRICT PO Box 36 TROY MILLS IA 52344-0036 (319)224-3357 Linn 1182001 0079782 3/2/2013 TRUESDALE, CITY OF STP IOWA LAKES REGIONAL WATER 1301 38TH AVE. WEST PO BOX 555 SPENCER IA 51301 (712)262-8847 Buena Vista 6167001 0040991 8/31/2023 TRURO CITY OF STP CITY OF TRURO 120 E. CENTER, PO BOX 186 TRURO IA 50257 (641)765-4586 Madison 9600500 0067423 10/31/2021 TURKEY VALLEY COMMUNITY SCHOOL Turkey Valley Community School 3219 State Highway 24 Jackson Junction IA 52171 (319)776-6011 Winneshiek 6309500 0067041 6/30/2016 TWIN CEDARS COMMUNITY SCHOOL TWIN CEDARS COMMUNITY SCHOOL DISTRICT 2204 HIGHWAY G71 BUSSEY IA 50044 (641)944-5241 Marion 1300903 0070114 1/31/2025 TWIN LAKES UTILITIES STP TWIN LAKES UTILITIES 7168 NORTH TWIN LAKES ROAD ROCKWELL CITY IA 50579 (712)297-8720 Calhoun 3100300 0061298 3/31/2024 TWIN RIDGE SUBDIVISION CITY OF DUBUQUE 795 JULIEN DUBUQUE DR DUBUQUE IA 52003 (563)589-4179 Dubuque 5800100 0003361 4/30/2021 TYSON FRESH MEATS, INC. - COLUMBUS JUNCTION TYSON FOODS, INC. 800 STEVENS PORT DRIVE SUITE DD709 DAKOTA DUNES SD 57049-8709 (605)235-2061 Louisa 2500100 0002089 12/31/2024 TYSON FRESH MEATS, INC. - PERRY TYSON FRESH MEATS, INC. 800 STEVENS PORT DRIVE SUITE DD709 DAKOTA DUNES SD 57049-8709 (605)235-2061 Dallas 1178105 0064998 6/30/2025 TYSON FRESH MEATS, INC. - STORM LAKE TYSON FOODS, INC. 800 STEVENS PORT DRIVE SUITE 709 DAKOTA DUNES SD 57049-8709 (605)235-2061 Buena Vista 5200908 0084298 10/31/2023 U.S. ARMY - CORALVILLE DAM US ARMY CORP OF ENGINEERS - ROCK ISLAND DIST CLOCK TOWER BUILDING PO BOX 2004 ROCK ISLAND IL 61204-2004 (309)794-5886 Johnson 7869001 0036986 12/31/2022 UNDERWOOD CITY OF STP City of Underwood CITY CLERK, CITY HALL 218 2nd Street PO Box 40 UNDERWOOD IA 51576-0040 (712)566-2373 Pottawattamie 4291001 0034266 8/31/2020 UNION CITY OF STP CITY OF UNION CITY HALL, 308 CENTER ST., PO BOX 342 UNION IA 50258-0227 (641)486-2302 Hardin 0497001 0074373 12/14/2013 UNIONVILLE, CITY OF STP Rathbun Rural Water Association 16166 HWY J29 CENTERVILLE IA 52544-8037 (641)647-2416 Appanoose 0800500 0067181 4/30/2016 UNITED COMMUNITY SCHOOL UNITED COMMUNITY SCHOOL 1284 U AVENUE BOONE IA 50036 (515)432-5319 Boone 2900103 0063606 3/31/2019 UNITED STATES GYPSUM COMPANY UNITED STATES GYPSUM COMPANY 550 WEST ADAMS STREET CHICAGO IL 60661-3676 (312)436-4000 Des Moines 9400103 0062359 12/31/2015 UNITED STATES GYPSUM COMPANY UNITED STATES GYPSUM COMPANY 550 W. ADAMS STREET CHICAGO IL 60661-3676 (515)576-1815 Webster 5290002 0078930 4/30/2025 UNIVERSITY HEIGHTS, CITY OF MS4 UNIVERSITY HEIGHTS, CITY OF 1004 MELROSE AVE. UNIVERSITY HEIGHTS IA 52246 (319)337-6900 Johnson 5225108 0069159 3/31/2022 UNIVERSITY OF IOWA COOLING TOWER BLOWDOWN THE UNIVERSITY OF IOWA FACILITIES SERVICES GROUP 210 USB IOWA CITY IA 52242 (319)335-5168 Johnson 5225006 0078182 4/30/2024 UNIVERSITY OF IOWA MS4 UNIVERSITY OF IOWA 350 USB IOWA CITY IA 52242- (319)335-6190 Johnson 5225101 0003077 5/31/2022 UNIVERSITY OF IOWA POWER PLANT UNIVERSITY OF IOWA POWER PLANT THE UNIVERSITY OF IOWA 105 JESSUP HALL IOWA CITY IA 52242-1316 (319)335-5132 Johnson 5225105 0071919 6/30/2023 UNIVERSITY OF IOWA WATER TREATMENT PLANT THE UNIVERSITY OF IOWA UNIVERSITY SERVICES BUILDING IOWA CITY IA 52242 (319)335-5168 Johnson 0709501 0063941 4/30/2026 UNIVERSITY OF NORTHERN IOWA UNIVERSITY OF NORTHERN IOWA 30TH STREET AND NEBRASKA PHYSICAL PLANT BUILDING CEDAR FALLS IA 50614-0192 (319)273-2092 Black Hawk 0709004 0079952 8/31/2026 UNIVERSITY OF NORTHERN IOWA MS4 UNIVERSITY OF NORTHERN IOWA 1801 W. 31ST ST. MAIL CODE 0192 CEDAR FALLS IA 50614- (319)273-3189 Black Hawk 6290001 0047741 5/31/2025 UNIVERSITY PARK CITY OF STP MAHASKA RURAL WATER SYSTEM INC. P.O. BOX 210 OSKALOOSA IA 52577 (641)673-8851 Mahaska 1200107 0072231 6/30/2019 UNVERFERTH MFG. CO., INC. UNVERFERTH MFG. CO., INC. 18107 U.S. 224 WEST P.O. BOX 357 KALIDA OH 45853 (419)532-3130 Butler 0680001 0059072 2/28/2026 URBANA CITY OF STP CITY OF URBANA CITY HALL 102 CAPITOL AVE. URBANA IA 52345 (319)443-2400 Benton 7780002 0078620 4/30/2024 URBANDALE, CITY OF MS4 CITY OF URBANDALE 3600 86TH ST. URBANDALE IA 50322- (515)278-3950 Polk 6762001 0043010 1/31/2022 UTE CITY OF STP CITY OF UTE 130 MAIN STREET UTE IA 51060 (712)885-2237 Monona 2452001 0032654 4/30/2021 VAIL CITY OF STP CITY OF VAIL 215 MAIN ST., PO BOX 128 VAIL IA 51465-0128 (712)677-2210 Crawford 5500112 0077194 3/31/2024 VALERO RENEWABLE FUELS CO, LLC - dba VALERO LAKOTA PLANT VALERO RENEWABLE FUELS CO. 1660 428TH ST. LAKOTA IA 50451 Kossuth 9433115 0079227 5/31/2015 VALERO RENEWABLE FUELS COMPANY, LLC JIM GILLINGHAM VALERO RENEWABLE FUELS COMPANY ONE VALERO WAY SAN ANTONIO TX 78249-1616 (210)435-3633 Webster 7100104 0080829 2/28/2018 VALERO RENEWABLE FUELS COMPANY, LLC JIM GILLINGHAM VALERO ENERGY CORPORATION ONE VALERO WAY SAN ANTONIO TX 78249-1616 (210)435-3633 O'Brien 1100108 0080209 2/28/2025 VALERO RENEWABLE FUELS CO., LLC - dba VALERO ALBERT CITY PLANT VALERO RENEWABLE FUELS COMPANY, LLC C/O JIM GILLINGHAM ONE VALERO WAY SAN ANTONIO TX 78249-1616 (210)435-3633 Buena Vista 3400109 0080403 10/31/2021 VALERO RENEWABLE FUELS CO., LLC dba VALERO CHARLES CITY PLANT VALERO RENEWABLE FUELS COMPANY, LLC ONE VALERO WAY SAN ANTONIO TX 78249-1616 (210)435-3633 Floyd 8456476 0077682 9/30/2021 Valley View Feedlots, Inc. Kevin Van Wyhe P.O. Box 72 Hawarden IA 51023 (712)548-3659 Sioux 9000602 0069663 2/29/2024 VALLEY VILLAGE MOBILE HOME COURT WILLIAM G. STEELE, JR. 80 SOUTH LAKE AVENUE SUITE 719 PASADENA CA 91101 (818)795-7755 Wapello 8456760 0079880 11/30/2022 Van Beek Feedlot Vern Van Beek 2733 Chestnut Ave. Inwood IA 51240 (712)753-4939 Sioux 8456294 0079464 1/31/2026 Van Berkel Farms - Home Site Loren Van Regenmorter 3881 EAGLE AVENUE SIOUX CENTER IA 51250 (712)395-1415 Sioux 8458505 0083089 10/31/2021 Van Berkel Farms - Kooi Site Loren Van Regenmorter 3881 Eagle Ave. Sioux Center IA 51250 (712)395-1415 Sioux 4000104 0070033 8/31/2022 VAN DIEST SUPPLY COMPANY VAN DIEST SUPPLY COMPANY 1434 220TH STREET P.O. BOX 610 WEBSTER CITY IA 50595-0610 (515)832-2366 Hamilton 8457166 0052395 7/31/2026 Van Driessen Farms, Inc. Charles Van Driessen Van Driessen Farms, Inc. 1921 420th St. HAWARDEN IA 51023 (712)541-7386 Sioux 3300100 0000809 1/31/2026 VAN ELDEREN INC. VAN ELDEREN INC. 2345 6TH STREET SHELBYVILLE MI 49344 (269)370-4358 Fayette 8456950 0079529 2/29/2024 Van Essen Feedlot Harold Van Essen 2730 340th Street Rock Valley IA 51247 (712)541-8375 Sioux 8457021 0082848 6/30/2025 Van Holland Farm, Inc Lyle Van Holland 3543 Fig Avenue ROCK VALLEY IA 51247 (712)441-0154 Sioux 0685001 0033341 1/31/2023 VAN HORNE CITY OF STP CITY OF VAN HORNE CITY HALL, PO BOX 359 VAN HORNE IA 52346-0359 (319)228-8238 Benton 2570001 0036021 6/30/2022 VAN METER CITY OF STP CITY OF VAN METER CITY HALL, P.O. BOX 160 VAN METER IA 50261-0160 (515)996-2644 Dallas 3956251 0078590 10/31/2022 Van Meter Feedyard, LLC Matt Van Meter 2197 Chestnut Road Guthrie Center IA 50115 (641)757-1174 Guthrie 8457694 0080659 1/31/2023 Van Voorst Cattle, Inc. Harlan VanVoorst 3241 360th Street Sioux Center IA 51250 (712)441-4356 Sioux 8459625 0083712 10/31/2022 Van Voorst Dairy Jim Van Voorst Van Voorst Dairy 3941 Dove Ave. Sioux Center IA 51250 (712)441-4538 Sioux 2783001 0066354 8/31/2024 VAN WERT CITY OF STP CITY OF VAN WERT CITY HALL, PO BOX 139 VAN WERT IA 50262-0139 (641)414-1174 Decatur 8461718 0083381 5/31/2024 Van Wyhe Feedlot Terry Van Wyhe 4111 Dove Avenue IRETON IA 51027 (712)441-4833 Sioux 7257127 0079197 3/31/2022 Vander Lee Feedlot Marjorie Vander Lee 6251 230th Street Melvin IA 51350 (712)736-2589 Osceola 8463232 0082899 12/31/2025 Vander Waal Brothers, Inc. VANDER WAAL BROTHERS, INC 2745 IBEX Avenue HULL IA 51239 (712)439-2884 Sioux 7642000 0051122 4/30/2022 VARINA, CITY OF WTP VARINA, CITY OF WTP 311 MAIN ST. FONDA IA 50593 Pocahontas 6256457 0077798 1/31/2023 Ver Steegh Brothers Farm Partnership Ver Steegh Brothers Partnership 3024 Galeston Avenue Eddyville IA 52553 (641)660-0672 Mahaska 8562102 0053269 5/31/2026 VERBIO NEVADA, LLC VERBIO NEVADA, LLC 17199 N LAUREL PARK DR., SUITE 320 LIVONIA MI 48152 (866)306-4777 Story 8456496 0080608 12/31/2022 Vermeer & Sons Farms-Feedlot Darren Vermeer 4220 Harrison Ave. Sioux Center IA 51250 (712)541-2003 Sioux 4875001 0058190 1/31/2023 VICTOR CITY OF STP CITY OF VICTOR 707 2nd Street, PO Box R VICTOR IA 52347 (319)647-3750 Iowa 0709109 0078140 2/29/2024 VIKING PUMP, INC. - VIKING ROAD FACILITY VIKING PUMP, INC. - IDEX CORPORATION 406 STATE STREET P.O. BOX 8 CEDAR FALLS IA 50613- (319)266-1741 Black Hawk 6985001 0032549 2/28/2023 VILLISCA CITY OF STP CITY OF VILLISCA 318 S 3RD AVE VILLISCA IA 50864 (712)826-2282 Montgomery 9486001 0032930 1/31/2022 VINCENT CITY OF STP CITY OF VINCENT CITY CLERK - CITY HALL 103 SOUTH 1ST VINCENT IA 50594 (515)356-4365 Webster 0688001 0035891 6/30/2025 VINTON CITY OF STP CITY OF VINTON CITY HALL, PO BOX 529 VINTON IA 52349-0529 (319)472-4707 Benton 2285001 0062952 7/31/2023 VOLGA CITY OF STP City of Volga P.O. Box 110 Volga IA 52077-0110 (563)767-3511 Clayton 3371001 0032492 3/31/2023 WADENA, CITY OF STP CITY OF WADENA CITY HALL, PO BOX 108 WADENA IA 52169-0108 (563)774-2875 Fayette 7085001 0061891 11/30/2024 WALCOTT CITY OF STP (SOUTH) CITY OF WALCOTT P.O. BOX 247 WALCOTT IA 52773-0247 (563)284-6571 Muscatine 0690001 0062545 4/30/2024 WALFORD CITY OF STP CITY OF WALFORD 120 5TH STREE N, P.O. BOX 148 WALFORD IA 52351-0148 (319)846-3103 Benton 5792001 0059081 9/30/2022 WALKER CITY OF STP CITY OF WALKER P.O. BOX 161 WALKER IA 52352-0161 (319)448-4359 Linn 8166001 0033065 5/31/2022 WALL LAKE CITY OF STP CITY OF WALL LAKE 209 W 2ND ST PO Box 37 WALL LAKE IA 51466 (712)664-2216 Sac 3290001 0062812 3/31/2023 WALLINGFORD CITY OF STP CITY OF WALLINGFORD PO BOX 365 WALLINGFORD IA 51365-0365 (712)867-4585 Emmet 7872001 0042986 4/29/2006 WALNUT CITY OF STP CITY OF WALNUT CITY CLERK, CITY HALL P.O. BOX 326 WALNUT IA 51577 (712)784-3725 Pottawattamie 7820101 0004308 7/31/2026 WALTER SCOTT JR. ENERGY CENTER MIDAMERICAN ENERGY COMPANY 666 GRAND AVE PO BOX 657 DES MOINES IA 50303-0657 (515)242-4300 Pottawattamie

36 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Owner Name Owner Address1 Owner Address2 Owner City Owner Owner Zip Owner Phone County State 2200105 0052856 1/11/2023 WALZ ENERGY FEEDLOT AND BIOGAS PROJECT WALZ ENERGY FEEDLOT AND BIOGAS PROJECT 22578 HWY 18 MONONA IA 52159 (319)930-0144 Clayton 5879001 0047961 8/31/2022 WAPELLO CITY OF STP CITY OF WAPELLO CITY HALL 335 N. MAIN STREET WAPELLO IA 52653 (319)523-4091 Louisa 5400800 0082511 2/28/2015 WAPELLO RWA WATER TREATMENT PLANT WAPELLO RURAL WATER ASSOCIATION 534 SHAUL AVENUE PO BOX 538 OTTUMWA IA 52501- (641)682-8355 Keokuk 2300401 0080799 11/30/2024 WAPSI CENTER CAMP DORMITORY SCOTT COUNTY CONSERVATION BOARD 14910 110TH AVENUE DAVENPORT IA 52804- (563)328-3280 Clinton 1037101 0060607 2/28/2022 WAPSIE VALLEY CREAMERY, INC. WAPSIE VALLEY CREAMERY, INC. 300 10TH STREET NE P.O. BOX 391 INDEPENDENCE IA 50644 (319)334-7193 Buchanan 7820113 0077178 1/31/2023 WARREN DISTRIBUTION, INC.-STORM WATER DISCHARGE WARREN DISTRIBUTION, INC. 727 S. 13TH. STREET OMAHA NE 68102 (402)341-9397 Pottawattamie 0990105 0071714 11/30/2016 WARTBURG COLLEGE WARTBURG COLLEGE 100 WARTBURG BLVD WAVERLY IA 50677 (319)352-8318 Bremer 0700904 0074241 10/31/2023 WASHBURN AREA-STP BLACK HAWK COUNTY BLACK HAWK COUNTY BOARD OF SUPERVISORS BLACK HAWK COUNTY COURTHOUSE 316 E.5TH.STREET WATERLOO IA 50703 (319)833-3003 Black Hawk 9271001 0032433 2/28/2021 WASHINGTON CITY OF STP CITY OF WASHINGTON CITY HALL, PO BOX 516 WASHINGTON IA 52353-0516 (319)653-6584 Washington 3400501 0080225 3/31/2022 WASHINGTON ELEMENTARY SCHOOL CHARLES CITY COMMUNITY SCHOOL DISTRICT 500 NORTH GRAND AVENUE CHARLES CITY IA 50616 (641)257-6500 Floyd 1880001 0043001 5/31/2024 WASHTA CITY OF STP CITY OF WASHTA 305 MAIN ST. P.O. BOX 152 WASHTA IA 51061-0152 (712)447-6216 Cherokee 9200302 0077089 12/31/2025 WATER'S EDGE SUBDIVISION - WWTF WATER'S EDGE, L.L.C. 2174 STEWARD DRIVE WASHINGTON IA 52353 (319)653-2889 Washington 0790001 0042650 5/31/2026 WATERLOO CITY OF STP CITY OF WATERLOO 715 MULBERRY STREET WATERLOO IA 50703 (319)291-4323 Black Hawk 0700903 0072290 4/30/2025 WATERLOO RESIDENTIAL CORRECTION FACILITY IOWA DEPARTMENT OF CORRECTIONS 314 E. 6TH. STREET P.O. BOX 4030 WATERLOO IA 50704 Black Hawk 0790002 0078301 4/30/2024 WATERLOO, CITY OF MS4 CITY OF WATERLOO 715 MULBERRY ST. WATERLOO IA 59793 (319)291-4312 Black Hawk 0397001 0063517 8/31/2022 WATERVILLE CITY OF STP CITY OF WATERVILLE CITY HALL, 82 MAIN ST. WATERVILLE IA 52170 (319)535-7261 Allamakee 0692001 0079871 9/30/2025 WATKINS, COMMUNITY OF POWESHIEK WATER ASSOCIATION PO BOX 504 BROOKLYN IA 52211- (641)522-7416 Benton 3375001 0071048 4/30/2026 WAUCOMA CITY OF STP CITY OF WAUCOMA PO BOX 15 WAUCOMA IA 52171 (563)776-4064 Fayette 2573002 0078875 8/31/2024 WAUKEE, CITY OF MS4 WAUKEE, CITY OF 230 HIGHWAY 6 WAUKEE IA 50263- (515)987-4363 Dallas 0398001 0033081 9/30/2021 WAUKON CITY OF STP CITY OF WAUKON 101 ALLAMAKEE STREET WAUKON IA 52172 (563)568-3492 Allamakee 0990001 0033197 7/31/2025 WAVERLY CITY OF STP CITY OF WAVERLY CITY HALL 200 1ST STREET NE WAVERLY IA 50677-0616 (319)352-4252 Bremer 0990106 0080268 8/31/2023 WAVERLY MUNICIPAL FIRE DEPARTMENT CITY OF WAVERLY 200 1ST STREET NE WAVERLY IA 50677 Bremer 4490001 0047953 1/31/2022 WAYLAND, CITY OF STP City of Wayland City Hall 218 W Main Street, PO BOX 155 Wayland IA 52654-0155 (319)256-3276 Henry 8822101 0077313 2/28/2026 WDC ACQUISITION, LLC dba WELLMAN Fansteel, Inc Number One, Tantalum Place North Chicago IL 60064- Union 2178001 0083666 5/31/2023 WEBB, CITY OF STP IOWA LAKES REGIONAL WATER 1301 38TH AVENUE WEST SPENCER IA 51301- (712)262-6847 Clay 4063002 0066281 12/31/2021 WEBSTER CITY MUNICIPAL BLDG. CITY OF WEBSTER CITY 400 2ND STREET PO BOX 217 WEBSTER CITY IA 50595-0217 (515)832-9139 Hamilton 4063001 0036625 2/28/2021 WEBSTER CITY, CITY OF STP CITY OF WEBSTER CITY P.O. BOX 217 WEBSTER CITY IA 50595-0217 (515)832-9151 Hamilton 5491001 0078719 9/21/2014 WEBSTER, CITY OF STP REGIONAL UTILITY SERVICE SYSTEMS 1501 W. WASHINGTON ST., STE. 103 MOUNT PLEASANT IA 52641 (319)385-1226 Keokuk 7500108 0076988 7/31/2026 WEINRICH TRUCK LINE, INC. - LAOP DONNA WEINRICH WEINRICH TRUCK LINE, INC. 27932 C60 HINTON IA 51024 (712)947-4887 Plymouth 2788001 0069167 5/31/2022 WELDON CITY OF STP CITY OF WELDON PO BOX 8 WELDON IA 50264-0008 (641)445-6380 Decatur 7356421 0080713 8/31/2021 Wellhausen Feedlots Keith Wellhausen 2311 Maple Ave. Clarinda IA 51632 (712)370-8763 Page 9276001 0032301 6/30/2026 WELLMAN CITY OF STP CITY OF WELLMAN 316 8th AVE WELLMAN IA 52356-0129 (319)646-2154 Washington 7540104 0073075 5/31/2025 WELLS ENTERPRISES, INC. NORTH ICE CREAM PLANT WELLS ENTERPRISES, INC. #1 BLUE BUNNY DRIVE P.O. BOX 1310 LE MARS IA 51031 (712)546-4000 Plymouth 7540105 0073083 7/31/2026 WELLS' ENTERPRISES, INC.(SOUTH ICE CREAM PLANT) WELLS ENTERPRISES, INC. #1 BLUE BUNNY DRIVE P.O. BOX 1310 LE MARS IA 51031 (712)546-4000 Plymouth 3890001 0042803 11/30/2022 WELLSBURG CITY OF STP CITY OF WELLSBURG CITY HALL, PO BOX L WELLSBURG IA 50680 (641)869-3342 Grundy 2391001 0071196 1/31/2024 WELTON CITY OF STP CITY OF WELTON P.O. BOX 15 WELTON IA 52774-0015 (319)659-8143 Clinton 1456300 0077810 3/31/2022 Wendl Feedlot Brian Wendl 27648 Olympic Ave. Carroll IA 51401 (712)683-5725 Carroll 2300103 0080951 4/24/2013 WENDLING QUARRIES - BEHR WASH BAY WENDLING QUARRIES, INC. 2647 225TH STREET DEWITT IA 52742- (563)659-9181 Clinton 7000107 0080926 5/31/2024 WENDLING QUARRIES - MOSCOW QUARRY WENDLING QUARRIES, INC. 2647 225 TH STREET P.O. BOX 230 DEWITT IA 52742- (563)659-1981 Muscatine 5700117 0080934 5/31/2025 WENDLING QUARRIES - ROBINS QUARRY WENDLING QUARRIES, INC. 2647 225TH STREET P.O. BOX 230 DEWITT IA 52742- (563)659-9181 Linn 5592001 0033472 8/31/2017 WESLEY CITY OF STP CITY OF WESLEY 105 2ND STREET SOUTH P.O. BOX 215 WESLEY IA 50483-0215 (515)679-4292 Kossuth 9100401 0075523 8/31/2022 WESLEY WOODS CAMP & RETREAT CENTER IOWA ANNUAL CONFERENCE WESLEY WOODS CAMP & RETREAT CENTER 2301 RITTENHOUSE ST DES MOINES IA 50321 (515)974-8913 Warren 7470001 0036994 10/31/2024 WEST BEND CITY OF STP CITY OF WEST BEND 301 SOUTH BROADWAY AVE., P.O. BOX 348 WEST BEND IA 50597-0348 (515)887-2181 Palo Alto 1694001 0032859 8/31/2022 WEST BRANCH CITY OF STP CITY OF WEST BRANCH CITY CLERK, CITY HALL P.O. BOX 218 WEST BRANCH IA 52358 (319)643-5888 Cedar 1600600 0067946 5/21/2014 WEST BRANCH MOBILE HOME HAVENPARK MANAGEMENT 51 W. CENTER ST., STE 600 OREM UT 84057 Cedar 2985001 0033669 7/31/2026 WEST BURLINGTON CITY OF STP CITY OF WEST BURLINGTON CITY CLERK, CITY HALL 122 BROADWAY STREET WEST BURLINGTON IA 52655 (319)752-5451 Des Moines 1400900 0052484 2/28/2022 WEST CENTRAL IOWA RURAL WATER ASSOCIATION WEST CENTRAL IOWA RURAL WATER ASSOCIATION 1607 ENTERPRISE MANNING IA 51455 Carroll 9281001 0072460 8/31/2019 WEST CHESTER CITY OF STP CITY OF WEST CHESTER 508 MAIN STREET WEST CHESTER IA 52359-0115 (319)698-7256 Washington 7785002 0078778 3/31/2025 WEST DES MOINES, CITY OF MS4 WEST DES MOINES, CITY OF 4200 MILLS CIVIC PARKWAY WEST DES MOINES IA 50265- (515)222-3600 Polk 1856845 0080616 9/30/2022 West Fork Feedlot (formerly Pat Staab Feedlot) Pat Staab 299 590th Street Marcus IA 51035 (712)540-0269 Cherokee 8200906 0066974 11/30/2024 WEST LAKE PARK SCOTT COUNTY CONSERVATION BOARD 14910 110 AVENUE DAVENPORT IA 52804-9020 (563)328-3280 Scott 7073001 0031691 1/31/2024 WEST LIBERTY CITY OF STP CITY OF WEST LIBERTY 409 N CLAHOUN STREET WEST LIBERTY IA 52776 (319)627-2418 Muscatine 5691001 0043109 7/31/2026 WEST POINT CITY OF STP CITY OF WEST POINT 313 5TH ST., PO BOX 69 WEST POINT IA 52656 (319)837-6313 Lee 3383003 0035378 2/29/2020 WEST UNION CITY OF STP CITY OF WEST UNION CITY HALL, P.O. BOX 151 612 HWY 150 S. WEST UNION IA 52175 (563)422-3908 Fayette 4880901 0077372 12/31/2021 WEST/HIGH AMANA SANITARY DISTRICT WEST/HIGH AMANA SANITARY DISTRICT P.O. Box 4 AMANA IA 52203 Iowa 3100118 0081175 10/29/2012 WESTERN DUBUQUE BIODIESEL, LLC WESTERN DUBUQUE BIODIESEL, LLC 904 JAMESMEIR ROAD FARLEY IA 52046- (563)744-3554 Dubuque 8100112 0079855 11/30/2024 WESTERN IOWA ENERGY, LLC WESTERN IOWA ENERGY, LLC 1220 SOUTH CENTER ST P.O. BOX 399 WALL LAKE IA 51466- (712)664-2173 Sac 7589001 0042960 4/30/2024 WESTFIELD CITY OF STP CITY OF WESTFIELD CITY HALL, P.O. BOX 5 WESTFIELD IA 51062-0005 (712)568-2631 Plymouth 3379001 0075353 4/30/2025 WESTGATE, CITY OF-STP CITY OF WESTGATE 104 CASS STREET PO BOX 187 WESTGATE IA 50681-0187 (563)578-3258 Fayette 2458001 0040274 6/30/2020 WESTSIDE CITY OF STP CITY OF WESTSIDE P.O. BOX 417 WESTSIDE IA 51467-0417 (712)663-4493 Crawford 9700501 0070289 9/30/2022 WESTWOOD COMMUNITY SCHOOL WESTWOOD COMMUNITY SCHOOL DISTRICT 1000 REBEL WAY SLOAN IA 51055 (712)428-3355 Woodbury 5493001 0032468 4/29/2006 WHAT CHEER CITY OF STP CITY OF WHAT CHEER CITY CLERK, CITY HALL P.O. BOX 408 WHAT CHEER IA 50268 (641)634-2590 Keokuk 2394001 0058912 9/30/2024 WHEATLAND CITY OF STP CITY OF WHEATLAND 205 E. JEFFERSON ST, P.O. BOX 456 WHEATLAND IA 52777-0456 (563)374-1289 Clinton 4802102 0000744 3/31/2025 WHIRLPOOL CORP - AMANA APPLIANCE DIVISION WHIRLPOOL CORPORATION 2000 M-63 NORTH BENTON HARBOR MI 49022 (319)622-2520 Iowa 6769001 0032719 8/31/2021 WHITING CITY OF STP CITY OF WHITING 605 WHITTIER P.O. BOX 38 WHITING IA 51063-9998 (712)455-2414 Monona 5595001 0033430 9/30/2024 WHITTEMORE CITY OF STP CITY OF WHITTEMORE 315 4th St. P.O. Box 116 WHITTEMORE IA 50598-0116 (515)884-2265 Kossuth 4293001 0062448 9/30/2018 WHITTEN CITY OF STP (IRUA) IOWA REGIONAL UTILITIES ASSOCIATION 1351 IOWA SPEEDWAY DR. NEWTON IA 50205-8245 (641)792-7011 Hardin 1456552 0080250 4/30/2022 Wiederin Feedlot Craig Wiederin 14374 Mahogany Ave. Carroll IA 51401 (712)792-4143 Carroll 8222604 0064432 7/31/2026 WILD ROSE MOBILE HOME PARK DAVPP, LLC 111 BANK ST, #309 GRASS VALLEY CA 95945 (530)830-2803 Scott 6100401 0048096 8/31/2026 Wildwood Hills Ranch WILDWOOD HILLS RANCH 2552 UNION LANE SAINT CHARLES IA 50240 (641)396-2414 Madison 4070001 0058483 5/31/2024 WILLIAMS CITY OF STP CITY OF WILLIAMS CITY HALL P.O. BOX 7 WILLIAMS IA 50271-0007 (515)854-2260 Hamilton 4884001 0033880 4/30/2024 WILLIAMSBURG CITY OF STP CITY OF WILLIAMSBURG 210 WEST STATE STREET PO BOX 596 WILLIAMSBURG IA 52361 (319)668-1133 Iowa 5946001 0076449 9/30/2016 WILLIAMSON CITY OF (RATHBUN REGIONAL WATER ASSN) RATHBUN REGIONAL WATER ASSOCIATION 16166 HWY J29 CENTERVILLE IA 52544 (641)647-2416 Lucas 2537102 0079162 10/31/2024 WILLIS AUTOMOTIVE, LLC – OASIS LASER WASH WILLIS AUTOMOTIVE DBA WILLIS CHEVROLET 3333 HWY 141 DIAGONAL GRANGER IA 50109 (515)360-6755 Dallas 9100601 0067903 12/31/2021 WILSHIRE MOBILE HOME PARK HORIZON LAND COMPANY, LLC 2151 PRIEST BRIDGE DRIVE, SUITE 7 CROFTON MD 21114 (410)721-3374 Warren 7078001 0032921 11/30/2024 WILTON CITY OF STP CITY OF WILTON CITY HALL PO BOX 27 WILTON IA 52778 (563)732-2115 Muscatine 2300602 0068497 1/31/2021 WINDING BROOK MOBILE HOME PARK STP V & W RENTALS, LLC 2873 270TH ST. DEWITT IA 52742 (563)340-5803 Clinton 7791001 0078921 1/31/2022 WINDSOR HEIGHTS, CITY OF MS4 WINDSOR HEIGHTS, CITY OF 1133 66TH ST. WINDSOR HEIGHTS IA 50311- (515)279-3662 Polk 4493001 0033367 2/28/2022 WINFIELD CITY OF STP CITY OF WINFIELD CITY CLERK, CITY HALL 115 N. Locust, P.O. BOX 73 WINFIELD IA 52659 (319)257-6252 Henry 4100112 0067229 6/30/2025 WINNEBAGO INDUSTRIES, INC. WINNEBAGO INDUSTRIES, INC. 605 WEST CRYSTAL LAKE ROAD P.O. BOX 152 FOREST CITY IA 50436 (641)585-6760 Hancock 8456342 0081191 9/30/2022 Winterfeld Cattle Feedlot Dan Winterfeld 3840 Eagle Ave. Sioux Center IA 51250 (712)722-2419 Sioux 6171001 0034291 12/31/2024 WINTERSET CITY OF STP CITY OF WINTERSET 124 W COURT AVE WINTERSET IA 50273- (515)462-1422 Madison 6100801 0072681 7/31/2024 WINTERSET EGG FARM - LAOP ROSE ACRE FARMS, INC. 4874 BASE ROAD SEYMOUR IN 47274 Madison 6171000 0079961 10/31/2023 WINTERSET WATER TREATMENT PLANT WINTERSET WATER UTILITY 3301 CEDAR BRIDGE ROAD WINTERSET IA 50273- (515)462-3601 Madison 1093001 0032808 5/31/2025 WINTHROP CITY OF STP CITY OF WINTHROP CITY HALL, 354 W. MADISON P.O. BOX 98 WINTHROP IA 50682 (319)935-3317 Buchanan 8462847 0084301 9/30/2025 Witt Brothers Feedlot Randy & Jason Witt Witt Brothers Feedlot 4402 Chestnut HAWARDEN IA 51023 (605)929-7039 Sioux 4170001 0084174 6/30/2023 WODEN CITY OF STP CITY OF WODEN PO BOX 14 WODEN IA 50484-0014 (641)926-5715 Hancock 4388001 0032387 10/31/2023 WOODBINE CITY OF STP CITY OF WOODBINE CITY HALL, 517 WALKER ST WOODBINE IA 51579-1262 (712)647-2550 Harrison 2052001 0075256 1/31/2023 WOODBURN CITY OF (SIRWA) SOUTHERN IOWA RURAL WATER ASSOCIATION 1391 190TH STREET CRESTON IA 50801 (641)782-5744 Clarke

37 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Owner Name Owner Address1 Owner Address2 Owner City Owner Owner Zip Owner Phone County State 5800601 0052740 7/31/2022 WOODLAND MOBILE HOME PARK WOODLAND PARK, LLC 4500 25TH ST. MUSCATINE IA 52761 (563)263-4549 Louisa 2576001 0057517 6/30/2025 WOODWARD CITY OF STP CITY OF WOODWARD 108 FIRST STREET EAST PO BOX 517 WOODWARD IA 50276 (515)438-2560 Dallas 0800901 0063916 6/30/2024 WOODWARD RESOURCE CENTER WOODWARD RESOURCE CENTER 1251 334TH STREET WOODWARD IA 50276 (515)438-3287 Boone 0800904 0083127 10/31/2021 WOODWARD RESOURCE CENTER WTP WOODWARD RESOURCE CENTER 1251 334TH ST. WOODWARD IA 50276 (515)438-3675 Boone 4071001 0061310 11/30/2021 WOOLSTOCK CITY OF STP CITY OF WOOLSTOCK CITY HALL PO BOX 123 WOOLSTOCK IA 50599-0123 (515)839-5540 Hamilton 3189001 0058548 5/31/2022 WORTHINGTON CITY OF STP CITY OF WORTHINGTON CITY HALL P.O. BOX 197 WORTHINGTON IA 52078-0197 (563)855-2872 Dubuque 6061304 0077640 2/29/2024 Wynia Cattle (formerJansma Cattle) Norma Jansma 701 S. 9th Avenue Rock Rapids IA 51246 (712)472-3782 Lyon 5392001 0032646 10/31/2021 WYOMING, CITY OF STP City of Wyoming 141 West Main Street PO Box 76 Wyoming IA 52362-0076 (563)488-3970 Jones 0300900 0065986 1/31/2016 YELLOW RIVER/LUSTER HEIGHTS CAMP U.S. FISH & WILDLIFE SERVICE UPPER MISSISSIPPI R. NWFR/MCGREGOR DIST. 470 CLIFFHAVEN RD. PRAIRIE DU CHIEN WI 53821 Allamakee 5700401 0070050 2/28/2023 YMCA CAMP WAPSIE STP YMCA CAMP WAPSIE 2174 WAPSIE Y ROAD COGGON IA 52218 (319)435-2577 Linn 8590001 0058513 1/31/2023 ZEARING CITY OF STP CITY OF ZEARING CITY HALL, PO BOX 235 ZEARING IA 50278-0235 (641)487-7477 Story 3405103 0072150 2/28/2025 ZOETIS, LLC ZOETIS, LLC 10 SYLVAN WAY PARSIPPANY NJ 07054 Floyd 4998001 0074209 3/31/2023 ZWINGLE, CITY OF STP CITY OF ZWINGLE PO Box 527 ZWINGLE IA 52079 (563)652-2135 Jackson 7256367 0083984 8/31/2023 Zylstra Feedlot (AT) Keith Zystra Zylstra Feedlot 5123 210th St. ASHTON IA 51232 (712)261-2378 Osceola

38 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Region Section Town Range Latitude Longitude FAC DES BASIN Design Treatment Type PE Design BOD ADW Flow AWW Opcert Opcert Number Flow Type Grade 3126122 0079146 2/28/2025 1840, LLC 1 24 89 02 42.50276 -90.66789 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 NO TREATMENT 8466785 0084166 7/31/2023 360 Cattle Company, Inc. 3 22 96 45 43.12729 -96.14373 FLOYD R. 1 LAND APPLICATION 1556245 0080519 8/31/2021 A to Z Feeders 4 9 76 37 41.40383 -95.1106 EAST NISHNABOTNA R. 1 OTHER 3126114 0063860 5/31/2022 A.Y. MCDONALD MFG. CO. 1 29 89 02 42.49131 -90.7485 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 NO TREATMENT 6600110 0080896 10/31/2022 ABSOLUTE ENERGY 2 10 100 18 43.49709 -92.95503 CEDAR R. ABOVE THE SHELLROCK R. 1 NO TREATMENT 4201001 0035297 6/30/2025 ACKLEY CITY OF STP 2 1 89 19 42.5437 -93.03458 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 AERATED LAGOON 2198 367 0.218 0.53 WL IL 0105001 0035416 2/9/2008 ADAIR CITY OF STP 4 3 77 33 41.49649 -94.63854 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 TRICKLING FILTER 874 146 0.08 0.33 WW II 3900501 0067156 9/30/2022 ADAIR-CASEY COMMUNITY SCHOOL DISTRICT 4 30 78 32 41.52005 -94.58566 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 2 TRICKLING FILTER 120 20 0.0039 0.0039 2503001 0041921 9/30/2019 ADEL CITY OF STP 5 33 79 27 41.60353 -94.00302 NORTH RACCOON R. 2 SEQUENCING BATCH REACTOR 28174 4705 0.98 3.4 WW IV 2326120 0082279 3/31/2025 ADM BIOPROCESSING 6 18 81 07 41.82924 -90.19589 MISSISSIPPI R. NEAR CLINTON 1 NO TREATMENT 2326119 0080543 7/31/2024 ADM CLINTON COGENERATION PLANT 6 13 81 06 41.82556 -90.20094 MISSISSIPPI R. NEAR CLINTON 1 NO TREATMENT 0790123 0078484 1/31/2024 ADVANCED HEAT TREAT CORPORATION 1 10 89 13 42.54032 -92.35802 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 NO TREATMENT 0790119 0075451 7/31/2024 ADVANCED HEAT TREAT CORPORATION - MIDPORT 1 4 89 13 42.54692 -92.3924 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 NO TREATMENT 8803001 0041831 9/30/2022 AFTON CITY OF STP 4 21 72 29 41.01572 -94.19582 THOMPSON R. 1 WASTE STABILIZATION LAGOON 1030 172 0.07 0.171 WL IL 8803002 0052182 7/31/2020 AFTON CITY PARK SPLASHPAD 4 21 72 29 41.02859 -94.19692 THOMPSON R. 1 OTHER 0.022 0.034 4000111 0053034 2/28/2026 AG PARTNERS, LLC 2 32 87 23 42.30154 -93.55924 SKUNK R. ABOVE THE NORTH SKUNK 1 NO TREATMENT 1457102 0064262 2/28/2022 AG PROCESSING INC a COOPERATIVE 4 17 82 36 41.92082 -95.07065 WEST NISHNABOTNA R. 1 ACTIVATED SLUDGE 970 162 0.0367 0.0367 9926101 0059901 1/31/2017 AG PROCESSING INC. 2 27 91 26 42.66861 -93.90333 BOONE R. 1 NO TREATMENT 9926102 0074128 5/26/2010 AG PROCESSING INC. - ENERGY CENTER 2 27 91 26 42.66861 -93.90333 BOONE R. 1 NO TREATMENT 20 5 5 9700105 0058815 5/31/2022 AG PROCESSING INC. - SERGEANT BLUFF 3 31 87 47 42.30671 -96.3588 MISSOURI R. FROM SIOUX CITY TO THE LITTLE SIOUX 1 ACTIVATED SLUDGE 599 100 0.05 7170100 0063771 3/30/2005 AG PROCESSING INC. - SHELDON 3 31 97 42 43.18211 -95.85795 FLOYD R. 1 NO TREATMENT 5500113 0081116 7/31/2018 AG PROCESSING, INC. - ALGONA 2 5 95 28 43.07576 -94.2216 EAST FORK DES MOINES R. 1 NO TREATMENT 9003001 0057754 8/26/2006 AGENCY CITY OF STP 6 31 72 12 40.99846 -92.29172 SKUNK R. BELOW THE NORTH SKUNK 1 AERATED LAGOON 784 131 0.0555 0.1885 WL IL 0375102 0077135 9/1/2021 AGRI STAR MEAT AND POULTRY LLC 1 32 96 06 43.08778 -91.57829 YELLOW R. AND PAINT CR. 2 ACTIVATED SLUDGE 130539 21800 1.45 8100100 0004006 6/30/2023 AGRIUM U.S. INC. 3 13 89 37 42.52148 -95.15125 BOYER R. 1 NO TREATMENT 8400120 0081621 2/28/2022 AGROPUR INC. 3 35 97 45 43.18163 -96.13403 FLOYD R. 1 SEQUENCING BATCH REACTOR 56886 9500 0.35 9203001 0069183 5/31/2022 AINSWORTH CITY OF STP 6 21 75 06 41.29354 -91.54758 IOWA R. BELOW NORTH LIBERTY 1 WASTE STABILIZATION LAGOON 635 106 0.038 0.06 WL IL 9200201 0074080 9/20/2006 AINSWORTH FOUR CORNERS 6 22 75 06 41.29222 -91.52639 IOWA R. BELOW NORTH LIBERTY 1 SEPTIC TANK SAND FILTER 102 17 0.0075 0.0075 6800113 0065692 4/30/2022 AJINOMOTO ANIMAL NUTRITION NORTH AMERICA, INC. 5 12 73 16 41.14503 -92.64988 DES MOINES R. BELOW WHITEBREAST CR. 1 ACTIVATED SLUDGE 42 7 0.0032 6800114 0072389 4/30/2022 AJINOMOTO NORTH AMERICA, INC. 5 12 73 16 41.14503 -92.64988 DES MOINES R. BELOW WHITEBREAST CR. 1 ACTIVATED SLUDGE 24 4 0.0018 0.0018 7509001 0035211 5/31/2022 AKRON CITY OF STP 3 31 93 48 42.82367 -96.57406 BIG SIOUX R. BELOW THE ROCK 1 WASTE STABILIZATION LAGOON 2216 370 0.131 0.217 WL IL 1103001 0034312 3/31/2025 ALBERT CITY, CITY OF STP 3 15 92 35 42.77813 -94.95803 NORTH RACCOON R. 2 ADVANCED AERATED LAGOON 1317 220 0.058 0.38 WL II 8466409 0083224 3/31/2026 Albert Rens Feedlot 3 22 94 46 42.94932 -96.25831 BIG SIOUX R. BELOW THE ROCK 1 OTHER 6803001 0036871 4/30/2026 ALBIA CITY OF STP (NORTH) 5 15 72 17 41.03812 -92.80373 DES MOINES R. BELOW WHITEBREAST CR. 1 AERATED LAGOON 4353 727 0.348 0.818 WL IL 6803003 0036889 4/30/2026 ALBIA CITY OF STP (WEST) 5 21 72 17 41.02363 -92.82044 DES MOINES R. BELOW WHITEBREAST CR. 1 AERATED LAGOON 1246 208 0.154 0.268 WL IL 6403001 0034321 11/30/2024 ALBION CITY OF STP 5 6 84 18 42.10919 -92.98245 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 AERATED LAGOON 611 102 0.078 0.25 WL IL 3100401 0075621 5/31/2025 ALBRECHT ACRES CAMPGROUND-STP 1 19 90 02 42.59782 -90.77527 LITTLE MAQUOKETA R. 1 SEPTIC TANK SAND FILTER 42 7 0.0035 0.0035 5704001 0024431 1/31/2025 ALBURNETT CITY OF STP 1 25 85 07 42.14251 -91.61849 CEDAR R. BELOW CEDAR RAPIDS 1 WASTE STABILIZATION LAGOON 953 159 0.085 WL IL 4213001 0034339 2/28/2025 ALDEN CITY OF STP 2 19 89 21 42.50679 -93.36484 IOWA R. ABOVE ALBION 1 WASTE STABILIZATION LAGOON 1389 232 0.103 0.2 WL IL 5502001 0022055 6/30/2022 ALGONA CITY OF STP 2 10 95 29 43.06489 -94.24757 EAST FORK DES MOINES R. 2 TRICKLING FILTER 26946 4500 1.32 2.6 WW III 0300901 0065790 4/30/2026 ALLAMAKEE COUNTY PUBLIC SAFETY CENTER STP 1 8 98 05 43.31331 -91.45375 UPPER IOWA R. 1 WASTE STABILIZATION LAGOON 102 17 0.01 0.01 0790118 0072419 4/30/2024 ALLEN MEMORIAL HOSPITAL 1 14 89 13 42.52663 -92.33955 CEDAR R. ABOVE THE SHELLROCK R. 1 NO TREATMENT 9303003 0054054 8/31/2026 ALLERTON CITY OF STP (NORTH) 5 2 68 22 40.71568 -93.3649 CHARITON R. 1 WASTE STABILIZATION LAGOON 171 29 0.02 WL IL 9303002 0054046 8/31/2026 ALLERTON CITY OF STP (SOUTH) 5 11 68 22 40.69578 -93.35774 MEDICINE AND LOCUST CR.S 1 AERATED LAGOON 5988 1000 0.14 0.21 WL I 3126120 0077151 10/31/2024 ALLIANT ENERGY DATA CENTER 1 24 89 02 42.50291 -90.66728 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 NO TREATMENT 1203001 0042731 1/31/2025 ALLISON CITY OF STP 2 31 92 16 42.74091 -92.79014 WEST FORK CEDAR R. 1 WASTE STABILIZATION LAGOON 1527 255 0.075 0.2 WL IL 1108001 0024449 6/30/2025 ALTA CITY OF STP 3 27 91 38 42.66601 -95.31296 MAPLE R. 2 ACTIVATED SLUDGE 3018 504 0.221 0.566 WW III 1903001 0030686 8/31/2024 ALTA VISTA CITY OF STP 1 29 97 13 43.19114 -92.41643 WAPSIPINICON R. ABOVE ANAMOSA 1 WASTE STABILIZATION LAGOON 389 65 0.032 0.06 WL IL 8403001 0028932 12/31/2023 ALTON CITY OF STP 3 11 94 44 42.9729 -96.00491 FLOYD R. 1 WASTE STABILIZATION LAGOON 2096 350 0.12 0.241 WL IL 7707002 0078603 7/31/2024 ALTOONA, CITY OF MS4 5 18 79 22 41.64405 -93.45982 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 NO TREATMENT 6003001 0059722 11/30/2019 ALVORD CITY OF STP 3 5 98 46 43.3413 -96.29397 ROCK R. 1 WASTE STABILIZATION LAGOON 269 45 0.015 0.025 WL IL 4856996 0077500 9/30/2025 Amana Farms, Inc. 6 22 81 10 41.81082 -91.98779 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 OTHER 4802901 0059161 7/31/2021 AMANA SANITARY DISTRICT 6 26 81 09 41.79641 -91.85656 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 WASTE STABILIZATION LAGOON 3119 521 0.158 WL IL 5640104 0033600 6/30/2021 AMEREN UE KEOKUK PLANT 6 1 65 02 40.39902 -91.37493 MISSISSIPPI R. NEAR FORT MADISON 1 ACTIVATED SLUDGE 26 4 4700109 0082121 12/29/2013 AMERICAN NATURAL PROCESSORS, INC. 3 35 89 39 42.47834 -95.40919 MAPLE R. 1 NO TREATMENT 8503001 0035955 8/31/2015 AMES WATER POLLUTION CONTROL FACILITY 5 31 83 23 41.95065 -93.56506 SKUNK R. ABOVE THE NORTH SKUNK 1 TRICKLING FILTER 96707 16150 8.6 12.1 WW IV 8503003 0078204 3/31/2024 AMES, CITY OF MS4 5 2 84 24 42.02638 -93.61715 SKUNK R. ABOVE THE NORTH SKUNK 1 NO TREATMENT 9433112 0071366 8/31/2022 AML RIVERSIDE 2 19 89 28 42.50693 -94.20045 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 NO TREATMENT 1300103 0073512 10/20/2024 AMPC, INC. dba ESSENTIA PROTEINS SOLUTIONS - LAOP 3 28 88 34 42.41361 -94.81805 NORTH RACCOON R. 1 LAND APPLICATION 1000 0.031 0.031 8300100 0073920 7/10/2024 AMPC, INC. dba ESSENTIA PROTEINS SOLUTIONS - LAOP 4 20 79 38 41.64556 -95.3061 WEST NISHNABOTNA R. 1 WASTE STABILIZATION LAGOON 8982 1500 0.15 0.15 5307001 0025895 10/31/2025 ANAMOSA CITY OF STP 1 10 84 04 42.10149 -91.2908 WAPSIPINICON R. BELOW ANAMOSA 3 ACTIVATED SLUDGE 9096 1519 0.68 1.25 WW III 2307001 0021091 11/30/2023 ANDOVER CITY OF STP 6 22 83 06 41.9763 -90.2568 MISSISSIPPI R. NEAR SABULA 1 WASTE STABILIZATION LAGOON 108 18 0.012 WL IL 4903001 0057975 8/31/2016 ANDREW CITY OF STP 1 22 85 03 42.15682 -90.60091 MAQUOKETA R. 1 WASTE STABILIZATION LAGOON 952 159 0.079 WL IL 1503001 0024520 9/30/2021 ANITA CITY OF STP 4 31 77 34 41.42996 -94.80031 EAST NISHNABOTNA R. 1 AERATED LAGOON 1377 230 0.15 0.35 WL IL 7709000 0074489 2/28/2026 ANKENY AQUIFER STORAGE AND RECOVERY WELL 5 23 80 24 41.7292 -93.6106 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 OTHER 7709008 0078611 8/31/2024 ANKENY, CITY OF MS4 5 14 80 24 41.73205 -93.60592 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 NO TREATMENT 9704001 0042854 4/20/2014 ANTHON CITY OF STP 3 33 88 43 42.39307 -95.85232 LITTLE SIOUX R. 1 WASTE STABILIZATION LAGOON 647 108 0.06 0.127 WL IL 7500114 0080942 1/31/2022 ANTHONY TRUCKING, INC. 3 30 92 45 42.75766 -96.19527 FLOYD R. 1 LAND APPLICATION 1207001 0035050 12/31/2023 APLINGTON CITY OF STP 2 29 90 17 42.58465 -92.87005 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 2 AERATED LAGOON 1198 200 0.166 0.35 WL IL 1403001 0031208 12/31/2022 ARCADIA CITY OF STP 4 17 84 36 42.08139 -95.05406 BOYER R. 1 WASTE STABILIZATION LAGOON 566 95 0.0526 0.0526 WL IL 7103001 0082422 11/30/2021 ARCHER CITY OF STP 3 24 96 41 43.11526 -95.74217 LITTLE SIOUX R. 1 TRICKLING FILTER 143 24 0.0106 0.014 WW II 7727135 0072958 5/31/2026 ARCHER DANIELS MIDLAND COMPANY 5 25 79 24 41.62756 -93.58348 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 NO TREATMENT 2326101 0003620 3/31/2021 ARCHER DANIELS MIDLAND CORN PROCESSING 6 23 81 06 41.81391 -90.22222 MISSISSIPPI R. NEAR CLINTON 1 ACTIVATED SLUDGE 1E+06 177000 9 8278100 0003395 9/30/2023 ARCONIC DAVENPORT LLC 6 26 78 04 41.53647 -90.46814 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 1 OTHER 0.72 0.72 3126115 0069540 12/31/2022 ARCTIC GLACIER PREMIUM ICE 1 34 89 02 42.48355 -90.71926 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 OTHER 8503105 0072061 4/30/2025 ARCTIC GLACIER U.S.A., INC. 5 1 83 24 42.0266 -93.58608 SKUNK R. ABOVE THE NORTH SKUNK 1 OTHER 0.005 0.005 5603001 0082406 10/31/2020 ARGYLE, CITY OF STP 6 8 66 06 40.52846 -91.56885 DES MOINES R. BELOW WHITEBREAST CR. 1 SEPTIC TANK SAND FILTER 117 19.6 0.005 0.01 8809001 0074462 4/30/2016 ARISPE, CITY OF STP 4 17 71 29 40.9442 -94.21485 GRAND R. 1 WASTE STABILIZATION LAGOON 89 15 0.0087 WL IL 3307001 0027383 11/30/2023 ARLINGTON CITY OF STP 1 28 92 07 42.75694 -91.67393 TURKEY R. 1 WASTE STABILIZATION LAGOON 677 113 0.061 0.075 WL IL 3203001 0028517 5/31/2022 ARMSTRONG CITY OF STP 3 14 99 31 43.38883 -94.48234 EAST FORK DES MOINES R. 1 AERATED LAGOON 1269 212 0.125 0.325 WL IL 7727012 0052975 4/30/2024 ARMY POST ROAD AQUIFER STORAGE & RECOVERY FACILITY 5 35 78 25 41.52521 -93.69422 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 NO TREATMENT 6056506 0079502 12/31/2025 ARNEVA CATTLE, LLC 3 35 98 48 43.26542 -96.46988 BIG SIOUX R. ABOVE THE ROCK 1 OTHER 3030102 0053081 2/24/2026 ARNOLDS PARK 2019 PROMENADE BEAUTIFICATION PROJECT 3 30 99 36 43.36709 -95.13704 LITTLE SIOUX R. 1 NO TREATMENT 4703001 0025887 6/30/2025 ARTHUR CITY OF STP 3 23 87 39 42.3368 -95.35255 LITTLE SIOUX R. 2 WASTE STABILIZATION LAGOON 210 35 0.0484 WL IL 3102001 0069922 4/30/2025 ASBURY CITY OF STP 1 18 89 02 42.51846 -90.76969 LITTLE MAQUOKETA R. 2 OXIDATION DITCH 6228 1040 0.538 0.803 WW III 3102002 0078905 1/31/2025 ASBURY, CITY OF MS4 1 20 89 02 42.51419 -90.75261 LITTLE MAQUOKETA R. 1 NO TREATMENT 7209001 0024457 3/31/2023 ASHTON CITY OF STP 3 15 98 42 43.30976 -95.80224 ROCK R. 1 WASTE STABILIZATION LAGOON 629 105 0.0449 WL IL 7165101 0081965 5/31/2023 ASSOCIATED MILK PRODUCERS, INC. - SANBORN 3 35 97 41 43.18046 -95.6561 FLOYD R. 1 NO TREATMENT 7165102 0053204 2/10/2025 ASSOCIATED MILK PRODUCERS, INC. LAOP 3 35 97 41 43.1805 -95.65603 FLOYD R. 1 LAND APPLICATION

39 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Region Section Town Range Latitude Longitude FAC DES BASIN Design Treatment Type PE Design BOD ADW Flow AWW Opcert Opcert Number Flow Type Grade 7009001 0070998 4/18/2006 ATALISSA CITY OF STP 6 13 78 03 41.56399 -91.15457 CEDAR R. BELOW CEDAR RAPIDS 1 ACTIVATED SLUDGE 217 36 0.031 0.04 WW II 0603001 0020796 1/31/2024 ATKINS CITY OF STP 1 13 83 09 41.99778 -91.84055 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 2 ACTIVATED SLUDGE 4000 668 0.33 0.94 WW III 1509001 0029025 10/31/2024 ATLANTIC CITY OF STP 4 6 76 36 41.40764 -95.0285 EAST NISHNABOTNA R. 2 SEQUENCING BATCH REACTOR 11976 2000 0.98 2.65 WW III 8104001 0057029 11/30/2021 AUBURN CITY OF STP 3 14 86 35 42.26057 -94.87961 NORTH RACCOON R. 2 WASTE STABILIZATION LAGOON 449 75 0.022 0.04 WL IL 0505001 0035203 1/31/2020 AUDUBON CITY OF STP 4 28 80 35 41.70611 -94.92222 EAST NISHNABOTNA R. 1 OXIDATION DITCH 3233 540 0.277 0.967 WW III 3126501 0081809 2/29/2020 AUDUBON ELEMENTARY SCHOOL 1 24 89 02 42.515 -90.66562 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 NO TREATMENT 6258708 0080136 5/31/2022 Augustine & Sons, Inc. 5 16 76 14 41.37966 -92.4768 NORTH SKUNK R. 1 OTHER 1803001 0028908 7/31/2026 AURELIA CITY OF STP 3 15 91 39 42.69499 -95.42744 MAPLE R. 1 WASTE STABILIZATION LAGOON 1222 204 0.12 0.21 WL IL 1003001 0059412 12/31/2022 AURORA CITY OF STP 1 13 90 08 42.61036 -91.72696 WAPSIPINICON R. ABOVE ANAMOSA 1 WASTE STABILIZATION LAGOON 332 55 0.032 WL IL 6061430 0084204 5/31/2024 AVACH HOLDINGS LLC 3 33 100 48 43.44701 -96.49773 BIG SIOUX R. ABOVE THE ROCK 1 LAND APPLICATION 0398100 0003751 11/30/2024 AVEKA NUTRA PROCESSING 1 30 98 05 43.27746 -91.47557 UPPER IOWA R. 1 NO TREATMENT 6809001 0074713 1/31/2025 AVERY, CITY OF STP-(RATHBUN RWA) 5 4 72 16 41.0679 -92.70674 DES MOINES R. BELOW WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 126 21.1 0.0124 WL IL 7803001 0030708 5/31/2025 AVOCA CITY OF STP 4 17 77 39 41.46921 -95.34632 WEST NISHNABOTNA R. 1 WASTE STABILIZATION LAGOON 1677 280 0.124 0.165 WL IL 5625101 0003514 8/31/2024 AXALTA COATING SYSTEMS, LLC - FORT MADISON PLANT 6 6 67 04 40.62994 -91.35771 MISSISSIPPI R. NEAR FORT MADISON 1 NO TREATMENT 7403001 0079677 7/31/2021 AYRSHIRE, CITY OF STP 3 23 95 34 43.03056 -94.82741 DES MOINES R. ABOVE THE EAST FORK DES MOINES 1 WASTE STABILIZATION LAGOON 204 34 0.0175 0.0202 WL IL 4760840 0079049 10/31/2024 B&D Dairy 3 16 89 40 42.51945 -95.5805 LITTLE SIOUX R. 1 LAND APPLICATION 9405001 0029041 9/30/2022 BADGER CITY OF STP 2 15 90 28 42.60715 -94.14783 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 WASTE STABILIZATION LAGOON 844 141 0.096 0.109 WL IL 4907001 0063398 5/31/2026 BALDWIN-MONMOUTH WW TREATMENT AGENCY 1 20 84 01 42.07343 -90.86316 MAQUOKETA R. 1 WASTE STABILIZATION LAGOON 605 101 0.053 WL IL 3103001 0076911 9/30/2024 BALLTOWN, CITY OF-NORTH WWTF 1 5 90 01 42.63966 -90.87 LITTLE MAQUOKETA R. 1 SEPTIC TANK SAND FILTER 78 13 0.006 0.0064 WW W 3103002 0076929 9/30/2024 BALLTOWN, CITY OF-SOUTH WWTF 1 5 90 01 42.63374 -90.86973 LITTLE MAQUOKETA R. 1 SEPTIC TANK SAND FILTER 36 6 0.003 0.0032 WW W 5507002 0057762 2/28/2025 BANCROFT CITY OF STP 2 13 98 29 43.30152 -94.20863 EAST FORK DES MOINES R. 2 WASTE STABILIZATION LAGOON 743 124 0.17 WL IL 3109001 0071731 9/20/2009 BANKSTON CITY OF STP 1 16 89 01 42.51823 -90.96103 LITTLE MAQUOKETA R. 1 SEPTIC TANK SAND FILTER 62 10 0.004 0.004 WW W 8456228 0077721 6/30/2022 Bar K Cattle LLC - K52 3 2 95 45 43.07789 -96.13549 FLOYD R. 1 OTHER 8457946 0059188 9/30/2024 Bar K Cattle, LLC - Carmel 3 18 96 45 43.12994 -96.19691 FLOYD R. 1 OTHER 8456567 0077518 1/31/2025 Bar K Cattle, LLC - Inwood 3 4 94 48 43.25553 -96.51193 BIG SIOUX R. ABOVE THE ROCK 1 OTHER 7905001 0081329 1/31/2024 BARNES CITY, CITY OF STP 5 34 78 14 41.51285 -92.4573 IOWA R. BELOW NORTH LIBERTY 1 WASTE STABILIZATION LAGOON 205 34.2 0.021 0.021 WL IL 9408001 0041246 1/31/2025 BARNUM CITY OF STP 2 22 89 30 42.51652 -94.3677 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 WASTE STABILIZATION LAGOON 280 46.8 0.038 WL IL 4356275 0077526 3/31/2023 Barry Farms 4 35 80 42 41.69606 -95.70267 BOYER R. 1 OTHER 5107001 0061778 1/31/2021 BATAVIA CITY OF STP 6 32 72 11 40.99095 -92.15415 SKUNK R. BELOW THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 581 97 0.0556 WL IL 4709001 0027855 2/28/2026 BATTLE CREEK CITY OF STP 3 27 87 41 42.31437 -95.59601 MAPLE R. 1 WASTE STABILIZATION LAGOON 868 145 0.068 0.0796 WL IL 5003001 0023353 1/31/2022 BAXTER CITY OF STP 5 23 81 20 41.81977 -93.14858 SKUNK R. ABOVE THE NORTH SKUNK 2 WASTE STABILIZATION LAGOON 1575 263 0.178 0.319 WL IL 3907001 0061468 10/31/2021 BAYARD CITY OF STP 4 10 81 32 41.84408 -94.55889 MIDDLE AND SOUTH RACCOON R.S 1 ACTIVATED SLUDGE 713 119 0.049 0.07 WW II 7000102 0000205 6/30/2022 BAYER CROPSCIENCE LP 6 27 76 02 41.34852 -91.0811 MUSCATINE ISLAND 1 ACTIVATED SLUDGE 88204 14730 0.71 0.86 4800105 0052268 4/30/2025 BAYER PRODUCTION SUPPLY LLC 6 16 79 09 41.65853 -91.90714 IOWA R. BELOW NORTH LIBERTY 1 WASTE STABILIZATION LAGOON 317 53 0.0036 0.0171 6203001 0035424 3/31/2024 BEACON CITY OF STP 5 27 75 16 41.27049 -92.68373 DES MOINES R. BELOW WHITEBREAST CR. 1 AERATED LAGOON 575 96 0.065 0.189 WL IL 3803001 0058734 6/30/2016 BEAMAN CITY OF STP 2 33 86 17 42.21785 -92.82615 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 WASTE STABILIZATION LAGOON 347 58 0.0348 WL IL 8709001 0026018 12/31/2021 BEDFORD CITY OF STP 4 35 68 34 40.66003 -94.71638 HUNDRED AND TWO 1 TRICKLING FILTER 1772 296 0.192 0.589 WW II 6057418 0080497 11/30/2022 Beef & Bacon Drive, Inc. 3 9 98 47 43.32054 -96.39265 ROCK R. 1 OTHER 7556281 0080411 6/30/2022 Beitelspacher Land and Cattle, LLC (Formerly Beitelspacher Bros.) 3 11 93 46 42.88286 -96.25329 FLOYD R. 1 OTHER 8465835 0081761 5/31/2024 Bell Lake Cattle Company 3 30 96 44 43.11175 -96.09426 FLOYD R. 1 OTHER 0610001 0065404 12/31/2024 BELLE PLAINE CITY OF STP 1 29 82 12 41.88151 -92.27782 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 2 ACTIVATED SLUDGE 3281 548 0.225 0.609 WW III 4910001 0029009 5/31/2023 BELLEVUE CITY OF STP 1 19 86 05 42.24802 -90.41561 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 ACTIVATED SLUDGE 4311 720 0.223 0.33 WW III 9905001 0041777 9/30/2021 BELMOND CITY OF STP 2 30 93 23 42.83966 -93.61378 IOWA R. ABOVE ALBION 2 ACTIVATED SLUDGE 4216 704 0.298 0.777 WW III 5400401 0077224 2/17/2008 BELVA DEER PARK 6 21 76 11 41.37351 -92.13593 NORTH SKUNK R. 1 SEPTIC TANK SAND FILTER 36 6 0.0032 0.0032 2300111 0081345 4/21/2013 BENEFICIAL TECHNOLOGIES, LLC 6 22 83 05 41.97862 -90.37067 MAQUOKETA R. 1 NO TREATMENT 1603001 0021971 7/31/2025 BENNETT CITY OF STP 6 16 80 01 41.73851 -90.96987 CEDAR R. BELOW CEDAR RAPIDS 1 WASTE STABILIZATION LAGOON 613 102 0.06 WL IL 3113001 0076856 5/31/2024 BERNARD, CITY OF-STP 1 27 87 01 42.31 -90.83833 MAQUOKETA R. 1 WASTE STABILIZATION LAGOON 191 32 0.018 0.018 WL IL 4000702 0076864 1/31/2023 BEST WESTERN NORSEMAN INN 2 6 88 23 42.46972 -93.56222 SKUNK R. ABOVE THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 42 6.98 0.0029 2863481 0079219 12/31/2025 Beswick Farms 1 36 90 05 42.57192 -91.376 MAQUOKETA R. 1 OTHER 8209000 0078191 1/31/2024 BETTENDORF, CITY OF MS4 6 15 78 04 41.56619 -90.4815 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 1 NO TREATMENT 9110001 0081418 5/31/2026 BEVINGTON CITY OF STP 5 30 76 25 41.36259 -93.78499 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 2 TRICKLING FILTER 325 54.21 0.0079 0.0099 WW II 5200403 0069094 10/31/2022 BEYONDER GETAWAY AT SLEEPY HOLLOW 6 32 80 08 41.69057 -91.80296 IOWA R. BELOW NORTH LIBERTY 1 WASTE STABILIZATION LAGOON 138 23 0.008 2900112 0078123 1/31/2025 BIG RIVER RESOURCES WEST BURLINGTON, LLC 6 29 70 03 40.83173 -91.22198 SKUNK R. BELOW THE NORTH SKUNK 1 NO TREATMENT 2800906 0081302 10/31/2025 BIG RIVER UNITED ENERGY, LLC 1 26 89 03 42.49031 -91.16279 MAQUOKETA R. 1 NO TREATMENT 1100109 0081256 8/31/2023 BINDER LIVESTOCK TRAILER WASHOUT - LAOP 3 12 92 37 42.79494 -95.15175 NORTH RACCOON R. 1 LAND APPLICATION 8909001 0023426 7/27/2002 BIRMINGHAM CITY OF STP 6 7 70 09 40.88528 -91.93607 SKUNK R. BELOW THE NORTH SKUNK 1 AERATED LAGOON 479 80 0.057 0.19 WL IL 8600102 0078158 10/31/2023 BITUMINOUS MATERIALS & SUPPLY 5 35 83 15 41.95988 -92.55844 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 NO TREATMENT 7727134 0073172 1/31/2023 BITUMINOUS MATERIALS AND SUPPLY, LP 5 3 78 24 41.58485 -93.60118 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 NO TREATMENT 4003001 0034347 4/30/2025 BLAIRSBURG CITY OF STP 2 3 88 24 42.47089 -93.63216 SKUNK R. ABOVE THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 404 68 0.045 WL IL 0607001 0030660 11/30/2021 BLAIRSTOWN CITY OF STP 1 13 82 11 41.90886 -92.07476 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 AERATED LAGOON 810 140 0.081 0.276 WL IL 6827001 0028215 9/30/2019 BLAKESBURG CITY OF STP 5 12 71 16 40.96002 -92.63946 DES MOINES R. BELOW WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 564 94.15 0.0482 WL IL 6709001 0042889 12/31/2016 BLENCOE CITY OF STP 4 10 82 45 41.92996 -96.06395 MISSOURI R. FROM SIOUX CITY TO THE LITTLE SIOUX 1 WASTE STABILIZATION LAGOON 265 44 0.018 0.045 WL IL 8714001 0076023 2/28/2015 BLOCKTON CITY OF (SOUTHERN IA RURAL WATER ASSN.) 4 23 67 32 40.59234 -94.50115 PLATTE R. 1 WASTE STABILIZATION LAGOON 210 35 0.022 WL IL 2613001 0047929 7/31/2021 BLOOMFIELD CITY OF STP (MAIN) 6 30 69 13 40.74323 -92.40941 FOX AND WYACONDA R.S 1 AERATED LAGOON 4066 679 0.35 0.91 WL IL 8215001 0028975 8/31/2020 BLUE GRASS CITY OF STP 6 5 77 02 41.50347 -90.7567 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 1 AERATED LAGOON 3192 533 0.26 0.454 WL IL 2985103 0077046 1/31/2018 BNSF RAILWAY COMPANY 6 26 70 03 40.82967 -91.15111 FLINT R. 1 OTHER 0.0202 0.0202 4609001 0047805 4/30/2024 BODE CITY OF STP 2 16 93 29 42.86819 -94.2777 EAST FORK DES MOINES R. 1 WASTE STABILIZATION LAGOON 489 81.6 0.0309 0.0379 WL IL 8463263 0079332 3/31/2026 Boerdery Inc. 3 21 95 44 43.02967 -96.05618 FLOYD R. 1 OTHER 8914001 0050628 7/31/2022 BONAPARTE CITY OF STP 6 9 68 08 40.69734 -91.78741 DES MOINES R. BELOW WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 550 92 0.055 WL IL 7717002 0078786 9/30/2024 BONDURANT, CITY OF MS4 5 30 80 22 41.703 -93.46195 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 NO TREATMENT 0819001 0058076 7/31/2024 BOONE CITY OF STP 5 33 84 26 42.04122 -93.89071 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 ACTIVATED SLUDGE 23952 4000 2.1 7 WW IV 0819000 0079421 2/28/2025 Boone, City of WTP 5 13 84 27 42.08044 -93.93288 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 OTHER 0825001 0058491 7/31/2017 BOXHOLM CITY OF STP 5 21 85 28 42.16614 -94.12154 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 WASTE STABILIZATION LAGOON 329 55 0.033 0.033 WL IL 8409001 0042838 1/31/2025 BOYDEN CITY OF STP 3 34 97 44 43.17899 -96.02009 FLOYD R. 1 AERATED LAGOON 10329 1725 0.194 0.35 WL I 2424101 0072915 12/31/2024 BOYER VALLEY COMPANY - LAOP 4 30 83 39 41.97066 -95.43361 BOYER R. 1 LAND APPLICATION 3100100 0001210 9/30/2023 BP PRODUCTS DUBUQUE TERMINAL 1 36 89 01 42.48175 -90.78776 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 OTHER 8464000 0083119 2/28/2026 Brad Pollema Feedlot 3 12 97 47 43.23171 -96.34997 BIG SIOUX R. BELOW THE ROCK 1 OTHER 7324001 0057151 6/30/2025 BRADDYVILLE CITY OF STP 4 30 67 36 40.57935 -95.02337 EAST NODAWAY R. 1 WASTE STABILIZATION LAGOON 263 44 0.026 WL IL 1011001 0028185 6/30/2019 BRANDON, CITY OF STP 1 27 87 10 42.31231 -92.00348 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 2 ADVANCED AERATED LAGOON 329 55 0.016 0.158 WL II 4166181 0082465 9/30/2024 Branstad Farms 2 24 97 24 43.20032 -93.6339 WINNEBAGO R. 1 OTHER 0510001 0057100 7/31/2026 BRAYTON CITY OF STP 4 19 78 35 41.54082 -94.92477 EAST NISHNABOTNA R. 1 WASTE STABILIZATION LAGOON 275 46 0.0275 WL IL 1409002 0056103 6/30/2023 BREDA CITY OF STP 4 1 85 36 42.19745 -94.9779 NORTH RACCOON R. 1 WASTE STABILIZATION LAGOON 646 107.9 0.082 0.1225 WL IL 7158774 0083941 7/31/2025 Brent Rieck Feedlot 3 25 97 40 43.18682 -95.50503 LITTLE SIOUX R. 1 OTHER 7758687 0038911 1/31/2023 Brenton Brothers, Inc 5 19 80 25 41.71924 -93.81915 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 OTHER 9756538 0080187 1/31/2022 Brian Baldwin Feedlot 3 15 87 43 42.35501 -95.8454 WEST FORK LITTLE SIOUX R. 1 OTHER 8459250 0082813 5/31/2025 Brian Roorda Dairy, LLC 3 10 94 45 42.98015 -96.14255 FLOYD R. 1 OTHER 1456263 0080284 4/30/2022 Brian Soyer Feedlot 4 32 85 34 42.12481 -94.83731 MIDDLE AND SOUTH RACCOON R.S 1 OTHER 9778501 0052953 6/30/2023 BRIAR CLIFF UNIVERSITY 3 17 89 47 42.52683 -96.42629 MISSOURI R. FROM SIOUX CITY TO THE LITTLE SIOUX 1 NO TREATMENT 0115001 0062006 5/31/2025 BRIDGEWATER CITY OF (SIRWA) 4 33 75 33 41.24426 -94.65855 NODAWAY R. 1 WASTE STABILIZATION LAGOON 283 47.2 0.0261 WL IL

40 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Region Section Town Range Latitude Longitude FAC DES BASIN Design Treatment Type PE Design BOD ADW Flow AWW Opcert Opcert Number Flow Type Grade 9209001 0047911 7/31/2024 BRIGHTON CITY OF STP 6 31 74 08 41.16526 -91.81929 SKUNK R. BELOW THE NORTH SKUNK 1 AERATED LAGOON 940 157 0.0925 0.231 WL IL 4103001 0023582 8/31/2026 BRITT CITY OF STP 2 33 96 25 43.08849 -93.81259 BOONE R. 2 TRICKLING FILTER 3862 645 0.53 0.9 WW II 9709001 0071510 2/28/2023 BRONSON CITY OF STP 3 29 88 46 42.41084 -96.22388 WEST FORK LITTLE SIOUX R. 1 SEPTIC TANK SAND FILTER 419 70 0.03 0.033 7909001 0020958 8/31/2023 BROOKLYN CITY OF STP 5 24 80 14 41.7309 -92.43572 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 2 ACTIVATED SLUDGE 1976 330 0.2 0.63 WW II 7256597 0079481 3/31/2026 Bruce A. Lorch, Inc 3 4 98 39 43.33615 -95.4558 LITTLE SIOUX R. 1 OTHER 8457054 0052492 8/31/2026 Bruce Van Kekerix Feedlot 3 13 97 48 43.21558 -96.45697 BIG SIOUX R. ABOVE THE ROCK 1 OTHER 6400113 0081434 10/31/2021 BRUIN MANUFACTURING CO., INC. 5 26 84 18 42.05709 -92.9064 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 NO TREATMENT 7514001 0058564 4/30/2018 BRUNSVILLE CITY OF STP 3 3 92 46 42.81244 -96.27112 FLOYD R. 1 WASTE STABILIZATION LAGOON 204 34 0.0198 0.0278 WL IL 5600606 0057525 6/30/2017 BRYANT'S MHP (now L & R Estates LLC) 6 4 65 05 40.46508 -91.44154 MISSISSIPPI R. NEAR FORT MADISON 1 WASTE STABILIZATION LAGOON 27 5 0.0018 8209100 0001198 3/31/2025 BUCKEYE TERMINALS, LLC - BETTENDORF TERMINAL 6 34 78 04 41.52391 -90.48862 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 1 OTHER 5200109 0072273 6/30/2018 BUCKEYE TERMINALS, LLC - CEDAR RAPIDS TERMINAL 6 35 81 07 41.78234 -91.63354 CEDAR R. BELOW CEDAR RAPIDS 1 OTHER 7820112 0071234 6/30/2024 BUCKEYE TERMINALS, LLC - COUNCIL BLUFFS TERMINAL 4 18 74 43 41.21481 -95.83112 PIGEON AND MOSQUITO CR.S 1 OTHER 7720100 0001228 5/31/2025 BUCKEYE TERMINALS, LLC - DES MOINES TERMINAL 5 35 79 25 41.60638 -93.73599 NORTH RACCOON R. 1 NO TREATMENT 9000103 0072281 11/30/2017 BUCKEYE TERMINALS, LLC - OTTUMWA TERMINAL 6 28 72 14 41.01292 -92.48236 DES MOINES R. BELOW WHITEBREAST CR. 1 OTHER 9506001 0047821 5/31/2016 BUFFALO CENTER CITY OF STP 2 8 99 26 43.40281 -93.95167 BLUE EARTH R. 1 WASTE STABILIZATION LAGOON 1521 254 0.1654 WL IL 8218002 0078760 8/31/2024 BUFFALO, CITY OF MS4 6 22 77 02 41.45722 -90.72162 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 1 NO TREATMENT 8218001 0020800 4/30/2023 BUFFALO, CITY OF STP 6 22 77 02 41.45714 -90.71083 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 1 ACTIVATED SLUDGE 2898 484 0.18 0.6 WW III 7556471 0080217 8/31/2022 Bull Creek Feedlot 3 9 92 47 42.80181 -96.40965 BIG SIOUX R. BELOW THE ROCK 1 OTHER 2909001 0043079 5/31/2021 BURLINGTON CITY OF STP 6 4 69 02 40.79864 -91.09842 FLINT R. 1 ACTIVATED SLUDGE 54491 9100 5.1 10.85 WW IV 2909000 0084271 10/31/2025 BURLINGTON MUNICIPAL WATERWORKS 6 20 70 02 40.84297 -91.10821 FLINT R. 1 OTHER 9600301 0072265 9/30/2024 BURR OAK SEWER COMMISSION-STP 1 23 100 09 43.4592 -91.86986 UPPER IOWA R. 2 OTHER 153 25.5 0.015 0.015 5510001 0027405 10/31/2023 BURT CITY OF STP 2 25 97 29 43.19184 -94.21653 EAST FORK DES MOINES R. 1 WASTE STABILIZATION LAGOON 586 97.8 0.076 0.115 WL IL 6309001 0072991 7/31/2025 BUSSEY CITY OF STP 5 13 74 18 41.20468 -92.87418 DES MOINES R. BELOW WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 659 110 0.065 WL IL 6056865 0081370 9/30/2023 C & C Feedlot 3 34 98 47 43.25934 -96.37366 ROCK R. 1 OTHER 2320001 0028622 12/31/2022 CALAMUS CITY OF STP 6 17 81 02 41.82513 -90.76111 WAPSIPINICON R. BELOW ANAMOSA 2 WASTE STABILIZATION LAGOON 599 100 0.037 0.067 WL IL 9417001 0057096 1/31/2022 CALLENDER CITY OF STP 2 12 87 30 42.3617 -94.28686 NORTH RACCOON R. 1 WASTE STABILIZATION LAGOON 407 68 0.045 0.147 WL IL 8200607 0063339 4/30/2025 CALLISON MOBILE HOME PARK 6 18 77 03 41.47841 -90.65457 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 1 ACTIVATED SLUDGE 61 10.2 0.006 0.0061 9615001 0023515 4/30/2025 CALMAR CITY OF STP 1 36 97 09 43.17938 -91.85953 TURKEY R. 2 ADVANCED AERATED LAGOON 1193 199.2 0.114 0.372 WL II 7109001 0062049 9/30/2016 CALUMET CITY OF STP 3 22 94 40 42.95357 -95.55578 LITTLE SIOUX R. 1 WASTE STABILIZATION LAGOON 259 43 0.0245 0.0245 WL IL 3405100 0003557 10/31/2021 CAMBREX CHARLES CITY, INC. 2 11 95 16 43.05291 -92.69502 CEDAR R. ABOVE THE SHELLROCK R. 1 ACTIVATED SLUDGE 12575 2100 0.25 0.25 8509001 0022101 4/30/2019 CAMBRIDGE CITY OF STP 5 21 82 23 41.89611 -93.52306 SKUNK R. ABOVE THE NORTH SKUNK 1 AERATED LAGOON 1449 242 0.12 0.271 WL IL 5100105 0079707 2/28/2025 CAMBRIDGE INVESTMENT RESEARCH INC. 6 7 72 09 41.04916 -91.92955 SKUNK R. BELOW THE NORTH SKUNK 2 WASTE STABILIZATION LAGOON 150 25 0.0083 8200402 0067059 1/31/2022 CAMP ABE LINCOLN 6 19 77 02 41.45787 -90.769 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 1 ACTIVATED SLUDGE 341 57 0.019 0.021 5300802 0071820 2/29/2024 CAMP COURAGEOUS OF IOWA 1 5 85 02 42.20706 -91.10812 MAQUOKETA R. 2 TRICKLING FILTER 365 61 0.01 0.015 7700901 0063215 7/31/2024 CAMP DODGE 5 35 80 25 41.68887 -93.71212 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 AERATED LAGOON 2216 370 0.218 0.396 2200401 0079839 2/29/2024 CAMP EWALU 1 19 91 06 42.67662 -91.59663 MAQUOKETA R. 1 SEPTIC TANK SAND FILTER 131 22 0.012 0.013 0800403 0073806 7/31/2022 CAMP HANTESA STP (CAMP FIRE) 5 17 83 26 41.9991 -93.8949 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 SEPTIC TANK SAND FILTER 62 10 0.005 0.005 8920001 0056685 11/30/2015 CANTRIL CITY OF STP 6 36 68 11 40.64103 -92.07331 FOX AND WYACONDA R.S 2 WASTE STABILIZATION LAGOON 281 47 0.022 0.033 WL IL 9000501 0064700 10/31/2024 CARDINAL SCHOOL STP 6 9 71 12 40.9643 -92.24056 SKUNK R. BELOW THE NORTH SKUNK 1 AERATED LAGOON 269 45 0.018 0.018 6200106 0071170 5/31/2022 CARGILL INC. EDDYVILLE LEACHATE TREATMENT PLANT 5 12 74 16 41.14027 -92.65213 DES MOINES R. BELOW WHITEBREAST CR. 1 OTHER 5715100 0000647 9/30/2025 CARGILL INCORPORATED 1 27 83 07 41.96916 -91.6423 CEDAR R. BELOW CEDAR RAPIDS 1 NO TREATMENT 6800100 0063762 11/30/2022 CARGILL, INC. 5 12 73 16 41.14027 -92.65213 DES MOINES R. BELOW WHITEBREAST CR. 1 ACTIVATED SLUDGE 778443 130000 8 9113001 0024554 3/31/2024 CARLISLE CITY OF STP 5 2 77 23 41.50458 -93.47692 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 AERATED LAGOON 5090 850 0.54 1.48 WL I 5700601 0065609 2/28/2026 CARLTON MOBILE HOME COURT 1 31 84 05 42.04843 -91.47263 CEDAR R. BELOW CEDAR RAPIDS 1 WASTE STABILIZATION LAGOON 72 12 0.005 0.005 6616001 0081566 1/31/2024 CARPENTER CITY OF STP 2 12 99 18 43.40707 -93.0245 CEDAR R. ABOVE THE SHELLROCK R. 1 WASTE STABILIZATION LAGOON 132 22 0.013 0.013 WL IL 1415001 0021377 10/31/2021 CARROLL, CITY OF STP 4 30 84 34 42.05698 -94.84555 MIDDLE AND SOUTH RACCOON R.S 1 ACTIVATED SLUDGE 28353 4735 1.6 4.2 WW IV 7809001 0042901 2/28/2022 CARSON CITY OF STP 4 10 74 40 41.23004 -95.42548 WEST NISHNABOTNA R. 2 TRICKLING FILTER 880 147 0.065 0.161 WW II 7812000 0078891 6/30/2026 CARTER LAKE, CITY OF MS4 4 21 75 44 41.2851 -95.91716 PIGEON AND MOSQUITO CR.S 1 NO TREATMENT 5318001 0027740 1/31/2023 CASCADE CITY OF STP 1 6 86 01 42.29528 -91.00938 MAQUOKETA R. 2 ACTIVATED SLUDGE 4305 719 0.45 1.25 WW III 3914001 0027197 3/8/2006 Casey, City of STP 4 35 78 32 41.50393 -94.50891 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 ACTIVATED SLUDGE 713 119 0.035 0.075 WW II 9620001 0076236 2/28/2015 CASTALIA CITY OF STP 1 21 96 07 43.11433 -91.66894 YELLOW R. AND PAINT CR. 1 WASTE STABILIZATION LAGOON 222 37 0.019 0.019 WL IL 0709001 0036633 7/31/2024 CEDAR FALLS CITY OF STP 1 12 89 14 42.53477 -92.44041 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 TRICKLING FILTER 45928 7670 7.68 8.8 WW III 0709600 0064033 1/31/2026 CEDAR FALLS MOBILE HOME VILLAGE 1 15 89 14 42.51323 -92.49221 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 WASTE STABILIZATION LAGOON 240 40 0.032 0709102 0002534 8/31/2017 CEDAR FALLS UTILITIES 1 12 89 14 42.52795 -92.43862 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 OTHER 1.44 1.44 0709003 0078263 4/30/2024 CEDAR FALLS, CITY OF MS4 1 13 89 14 42.52057 -92.44594 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 NO TREATMENT 5715001 0042641 5/31/2022 CEDAR RAPIDS CITY OF STP 1 32 83 06 41.95931 -91.56473 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 ACTIVATED SLUDGE 2E+06 406000 43.77 56 WW IV 5715146 0052651 5/31/2022 CEDAR RAPIDS COUNTRY CLUB 1 14 83 07 42.00324 -91.62925 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 NO TREATMENT 5715141 0077381 8/31/2023 CEDAR RAPIDS FRANKLIN MIDDLE SCHOOL 1 15 83 07 41.99739 -91.64334 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 NO TREATMENT 5715142 0077968 8/31/2024 CEDAR RAPIDS MCKINLEY MIDDLE SCHOOL 1 22 83 07 41.97864 -91.65358 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 NO TREATMENT 5715143 0078344 3/31/2024 CEDAR RAPIDS WILSON MIDDLE SCHOOL 1 33 83 07 41.95528 -91.66654 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 NO TREATMENT 5715005 0075566 1/31/2026 CEDAR RAPIDS, CITY OF MS4 1 28 83 07 41.975 -91.66666 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 NO TREATMENT 0700201 0082481 12/31/2024 CEDAR VALLEY SUITES 1 29 90 14 42.57042 -92.51852 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 SEPTIC TANK WETLAND 87 14.6 0.005 0.005 8400124 0053315 4/30/2026 CENTER FRESH EGG FARM - DOMESTIC WASTEWATER 3 14 95 46 43.05546 -96.23553 BIG SIOUX R. BELOW THE ROCK 1 TRICKLING FILTER 180 30 0.003 0.003 8400117 0080641 7/31/2023 CENTER FRESH EGG FARM - LAOP 3 14 95 46 43.05546 -96.23553 BIG SIOUX R. BELOW THE ROCK 1 LAND APPLICATION 3340 0.05 5315001 0080357 12/31/2024 CENTER JUNCTION, CITY OF STP 1 33 85 02 42.12126 -91.07439 MAQUOKETA R. 1 WASTE STABILIZATION LAGOON 175 29 0.0112 0.0148 WL IL 5718001 0021067 7/31/2022 CENTER POINT CITY OF STP (NORTH) 1 4 85 08 42.20023 -91.78941 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 AERATED LAGOON 2006 335 0.144 0.2 WL IL 5718002 0074420 7/31/2022 CENTER POINT, CITY OF STP (SOUTH) 1 16 85 08 42.1742 -91.78123 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 AERATED LAGOON 1988 332 0.178 0.195 WL IL 8900901 0076741 8/31/2026 CENTER VILLAGE CARE FACILITY-STP 6 19 69 09 40.76639 -91.93833 DES MOINES R. BELOW WHITEBREAST CR. 1 SEPTIC TANK SAND FILTER 61 10.2 0.0054 0.0068 0407003 0027472 11/30/2023 CENTERVILLE CITY OF STP (EAST) 5 31 69 17 40.73364 -92.86178 CHARITON R. 1 ROTATING BIOLOGICAL 10425 1741 1.15 1.5 WW III 0407004 0027464 11/30/2023 CENTERVILLE CITY OF STP (WEST) 5 35 69 18 40.73225 -92.89068 CHARITON R. 1 ROTATING BIOLOGICAL 4383 732 0.18 0.41 WW II 9778121 0030881 12/31/2023 CENTRAL BANK 3 28 89 47 42.49392 -96.40394 MISSOURI R. FROM SIOUX CITY TO THE LITTLE SIOUX 1 NO TREATMENT 5720001 0027979 3/31/2022 CENTRAL CITY CITY OF STP 1 3 85 06 42.20063 -91.52 WAPSIPINICON R. ABOVE ANAMOSA 1 ADVANCED AERATED LAGOON 1940 324 0.14 0.17 WL II 5600501 0069426 6/30/2025 CENTRAL LEE COMMUNITY SCHOOLS 6 26 67 06 40.57653 -91.51344 MISSISSIPPI R. NEAR FORT MADISON 1 AERATED LAGOON 290 48 0.02 0.02 3000800 0083879 5/31/2025 CENTRAL WATER SYSTEM 3 18 99 36 43.38678 -95.14729 LITTLE SIOUX R. 1 OTHER 9900123 0082783 9/30/2025 CENTRUM VALLEY FARMS, LLP - LAOP 2 18 90 23 42.60324 -93.60476 BOONE R. 1 LAND APPLICATION 9700104 0004014 8/31/2020 CF INDUSTRIES NITROGEN, LLC - PORT NEAL NITROGEN COMPLEX 3 24 87 48 42.33065 -96.37886 MISSOURI R. FROM SIOUX CITY TO THE LITTLE SIOUX 1 OTHER 9000105 0077062 9/30/2021 CHAMNESS TECHNOLOGY, INC.-LAND APPLICATION 6 19 73 15 41.11821 -92.62293 DES MOINES R. BELOW WHITEBREAST CR. 1 LAND APPLICATION 5903001 0028924 3/31/2023 CHARITON CITY OF STP 5 21 72 21 41.01554 -93.28371 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 OXIDATION DITCH 8048 1344 0.607 1.115 WW III 3405000 0003182 3/31/2024 CHARLES CITY WATER TREATMENT PLANT 2 1 95 16 43.06928 -92.67425 CEDAR R. ABOVE THE SHELLROCK R. 1 PRIMARY TREATMENT 3405001 0022039 5/31/2026 CHARLES CITY, CITY OF STP 2 7 95 15 43.05725 -92.66229 CEDAR R. ABOVE THE SHELLROCK R. 1 TRICKLING FILTER 25749 4300 1.96 4.66 WW III 2324001 0062341 1/31/2025 CHARLOTTE CITY OF STP 6 26 83 04 41.96651 -90.46156 MAQUOKETA R. 1 WASTE STABILIZATION LAGOON 892 149 0.076 0.076 WL IL 2417001 0022268 2/29/2024 CHARTER OAK CITY OF STP 4 22 84 41 42.06835 -95.60098 SOLDIER R. 1 WASTE STABILIZATION LAGOON 719 120 0.0576 WL IL 8609001 0071552 1/31/2026 CHELSEA CITY OF STP 5 8 82 13 41.92111 -92.37957 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 AERATED LAGOON 449 75 0.042 0.043 WL IL 1811002 0059005 1/31/2026 CHEROKEE CITY OF STP 3 3 91 40 42.7277 -95.55856 LITTLE SIOUX R. 1 ACTIVATED SLUDGE 200448 35850 2.387 WW IV 1800900 0082791 12/31/2023 CHEROKEE RURAL WATER DISTRICT #1 - CHEROKEE SUBSYSTEM 3 21 91 40 42.67721 -95.56799 LITTLE SIOUX R. 1 OTHER 4509001 0020931 6/30/2023 CHESTER CITY OF STP 1 11 100 13 43.48814 -92.35126 UPPER IOWA R. 1 WASTE STABILIZATION LAGOON 204 34 0.02 WL IL 9032001 0071081 1/31/2016 CHILLICOTHE,CITY OF-(WAPELLO RURAL WATER ASSN). 6 31 73 15 41.0753 -92.52352 DES MOINES R. BELOW WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 126 21 0.0125 WL IL 5000400 0068365 1/31/2019 CHRISTIAN CONFERENCE CENTER 5 17 79 18 41.65066 -92.97043 SKUNK R. ABOVE THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 150 25 0.0058 3709001 0031216 1/31/2024 CHURDAN CITY OF STP 4 21 85 31 42.15527 -94.46924 NORTH RACCOON R. 1 WASTE STABILIZATION LAGOON 701 117 0.032 WL IL

41 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Region Section Town Range Latitude Longitude FAC DES BASIN Design Treatment Type PE Design BOD ADW Flow AWW Opcert Opcert Number Flow Type Grade 0410001 0070734 10/31/2023 CINCINNATI CITY OF STP 5 4 67 18 40.63656 -92.92935 CHARITON R. 1 AERATED LAGOON 629 105 0.061 WL IL 8800105 0081442 8/31/2020 CIPCO - SUMMIT LAKE 4 19 73 30 41.11399 -94.34815 GRAND R. 1 NO TREATMENT 8456296 0079154 12/31/2022 Circle G Cattle, LLC 3 33 96 43 43.08417 -95.93164 FLOYD R. 1 OTHER 8503002 0033235 5/31/2022 CITY OF AMES STEAM ELECTRIC PLANT 5 2 83 24 42.02399 -93.60204 SKUNK R. ABOVE THE NORTH SKUNK 1 OTHER 8456363 0080101 10/31/2021 City View Farms - West 3 7 95 45 43.06154 -96.19542 FLOYD R. 1 OTHER 7160334 0077569 8/31/2024 City View Farms East 3 14 95 39 43.0495 -95.41949 LITTLE SIOUX R. 1 OTHER 1556657 0078069 10/31/2023 Clan Farms, Inc 4 13 76 37 41.38224 -95.05567 EAST NISHNABOTNA R. 1 OTHER 9420001 0062936 7/31/2025 CLARE CITY OF STP 2 26 90 30 42.58373 -94.34458 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 WASTE STABILIZATION LAGOON 323 54 0.0311 WL IL 1630001 0027201 6/30/2026 CLARENCE CITY OF STP 6 22 82 02 41.89126 -91.07012 WAPSIPINICON R. BELOW ANAMOSA 1 WASTE STABILIZATION LAGOON 1455 243 0.14 0.2274 WL IL 7329001 0035190 6/30/2021 CLARINDA CITY OF STP 4 6 68 36 40.72775 -95.02784 NODAWAY R. 1 TRICKLING FILTER 18563 3100 0.85 1.6 WW III 9909001 0030945 11/30/2017 CLARION, CITY OF STP 2 1 91 25 42.72354 -93.74027 BOONE R. 1 ADVANCED AERATED LAGOON 3683 615 0.4 0.867 WL II 1228001 0023388 9/30/2023 CLARKSVILLE CITY OF STP 2 13 92 16 42.77594 -92.6739 SHELLROCK R. 1 WASTE STABILIZATION LAGOON 1527 255 0.15 WL IL 8456473 0083682 6/30/2022 Claussen Farms 3 9 97 47 43.23955 -96.39841 ROCK R. 1 OTHER 1716901 0058441 5/31/2021 CLEAR LAKE SANITARY DISTRICT 2 26 94 22 43.10464 -93.40694 WEST FORK CEDAR R. 1 SEQUENCING BATCH REACTOR 31838 5317 2.4 5.7 WW IV 8012001 0070980 10/31/2024 CLEARFIELD CITY OF STP 4 6 70 31 40.81243 -94.46685 PLATTE R. 1 WASTE STABILIZATION LAGOON 459 76 0.0398 WL IL 1817001 0042846 7/31/2021 CLEGHORN CITY OF STP 3 8 92 41 42.80545 -95.71941 LITTLE SIOUX R. 1 WASTE STABILIZATION LAGOON 467 78 0.042 0.0468 WL IL 6415001 0057509 2/28/2026 CLEMONS CITY OF STP 5 2 84 20 42.11406 -93.15276 IOWA R. ABOVE ALBION 1 WASTE STABILIZATION LAGOON 299 50 0.029 WL IL 3317001 0024465 8/31/2026 CLERMONT CITY OF STP 1 3 94 07 42.99163 -91.66105 TURKEY R. 1 AERATED LAGOON 796 133 0.035 0.084 WL IL 5625106 0059978 11/30/2025 CLIMAX MOLYBDENUM COMPANY 6 22 67 06 40.58212 -91.42392 MISSISSIPPI R. NEAR FORT MADISON 2 OTHER 93 15.6 2326001 0035947 2/28/2023 CLINTON CITY OF STP 6 23 81 06 41.81009 -90.23043 MISSISSIPPI R. NEAR CLINTON 2 ACTIVATED SLUDGE 111377 18600 5.6 12 WW IV 7720002 0078867 8/31/2024 CLIVE, CITY OF MS4 5 32 79 25 41.60961 -93.77511 NORTH RACCOON R. 1 NO TREATMENT 8616001 0056812 2/28/2016 CLUTIER CITY OF STP 5 19 84 13 42.07512 -92.40252 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 WASTE STABILIZATION LAGOON 352 59 0.029 WL IL 2326108 0001066 12/31/2025 CLYSAR, LLC 6 27 81 06 41.80444 -90.24135 MISSISSIPPI R. NEAR CLINTON 1 ACTIVATED SLUDGE 2900109 0074969 9/26/2009 CNH AMERICA LLC BURLINGTON PROVING GROUNDS 6 28 71 02 40.92781 -91.09939 FLINT R. 1 SEPTIC TANK SAND FILTER 2909100 0000787 3/27/2011 CNH AMERICA, LLC 6 29 70 02 40.82946 -91.10788 FLINT R. 1 NO TREATMENT 9400301 0062421 9/30/2024 COATS UTILITY COMPANY (XENIA RURAL WATER) 2 17 88 28 42.43394 -94.13449 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 WASTE STABILIZATION LAGOON 183 31 0.022 0.024 5722001 0024473 12/31/2022 COGGON CITY OF STP 1 10 86 06 42.28167 -91.52552 WAPSIPINICON R. ABOVE ANAMOSA 2 SEQUENCING BATCH REACTOR 1078 180 0.064 0.158 WW II 7335001 0062332 1/31/2022 COIN CITY OF STP 4 5 67 38 40.64326 -95.23045 TARKIO R. 1 WASTE STABILIZATION LAGOON 359 60 0.035 0.035 WL IL 2809002 0023604 9/30/2024 COLESBURG CITY OF STP (SOUTHEAST) 1 4 90 03 42.63711 -91.19701 TURKEY R. 2 ADVANCED AERATED LAGOON 952 159 0.041 0.241 WL II 5009001 0041980 3/31/2025 COLFAX CITY OF STP 5 1 79 21 41.68073 -93.24697 SKUNK R. ABOVE THE NORTH SKUNK 1 TRICKLING FILTER 2754 460 0.325 0.685 WW II 8515001 0047767 7/31/2016 COLLINS CITY OF STP 5 20 82 21 41.89924 -93.31165 SKUNK R. ABOVE THE NORTH SKUNK 2 WASTE STABILIZATION LAGOON 587 98 0.152 WL IL 8520001 0047759 3/31/2022 COLO CITY OF STP 5 17 83 21 42.00718 -93.31858 SKUNK R. ABOVE THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 994 166 0.091 0.175 WL IL 5815001 0023523 4/30/2023 COLUMBUS JUNCTION CITY OF STP 6 19 75 04 41.2813 -91.35512 IOWA R. BELOW NORTH LIBERTY 1 AERATED LAGOON 2874 480 0.33 0.72 WL IL 5600105 0000833 8/31/2026 CONAGRA FOODS PACKAGED FOODS, LLC 6 28 67 05 40.57442 -91.43806 MISSISSIPPI R. NEAR FORT MADISON 2 ACTIVATED SLUDGE 257 43 0.02 7016001 0058769 7/31/2022 CONESVILLE CITY OF STP 6 18 76 04 41.38333 -91.35192 IOWA R. BELOW NORTH LIBERTY 2 WASTE STABILIZATION LAGOON 814 136 0.076 0.097 WL IL 1000500 0067393 4/30/2025 CONO RIDGE HAVEN 1 27 87 08 42.31687 -91.77062 WAPSIPINICON R. ABOVE ANAMOSA 1 SEQUENCING BATCH REACTOR 421 69 0.025 0.025 3809001 0034355 2/28/2022 CONRAD CITY OF STP 2 32 86 17 42.2199 -92.86279 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 SEQUENCING BATCH REACTOR 1916 320 0.2 0.26 WW II 4807001 0079901 8/31/2021 CONROY, IOWA - POWESHIEK WATER ASSOC 6 22 80 10 41.72465 -91.98812 IOWA R. BELOW NORTH LIBERTY 1 WASTE STABILIZATION LAGOON 212 35 0.0156 0.0208 WL IL 8200107 0063525 9/30/2024 CONTINENTAL CEMENT COMPANY, LLC - DAVENPORT PLANT 6 23 77 02 41.46128 -90.69229 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 1 OTHER 3126202 0052864 8/31/2022 Convivium Urban Farmstead 1 13 89 02 42.52322 -90.67675 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 NO TREATMENT 3927002 0028983 1/31/2024 COON RAPIDS CITY OF STP 4 2 81 33 41.85584 -94.65744 MIDDLE AND SOUTH RACCOON R.S 1 WASTE STABILIZATION LAGOON 1545 258 0.153 0.185 WL IL 1427000 0049692 12/31/2024 COON RAPIDS MUNICIPAL UTILITIES WTP 4 27 82 33 41.87952 -94.67694 MIDDLE AND SOUTH RACCOON R.S 1 OTHER 5208001 0020788 3/31/2026 CORALVILLE CITY OF STP 6 1 79 07 41.67877 -91.59924 IOWA R. BELOW NORTH LIBERTY 2 OXIDATION DITCH 58814 9822 3.71 5.754 WW IV 5208002 0078646 8/31/2024 CORALVILLE, CITY OF MS4 6 6 79 06 41.67846 -91.58365 IOWA R. BELOW NORTH LIBERTY 1 NO TREATMENT 1356238 0079731 6/30/2021 Corey Agri, Inc. of Lytton Beef Feeding 3 4 87 34 42.38481 -94.81839 NORTH RACCOON R. 1 OTHER 2100100 0004570 7/31/2022 CORN BELT POWER COOPERATIVE-WISDOM STATION 3 6 94 37 43.16042 -95.25742 LITTLE SIOUX R. 1 NO TREATMENT 9937101 0079545 9/30/2021 CORN, LP 2 33 92 26 42.73188 -93.91033 BOONE R. 1 NO TREATMENT 0220001 0027375 10/31/2022 CORNING CITY OF STP 4 3 71 34 40.98274 -94.7427 EAST NODAWAY R. 1 ACTIVATED SLUDGE 4976 831 0.4 0.543 WW III 0220000 0076759 12/31/2023 CORNING MUNICIPAL UTILITIES WATER TREATMENT PLANT 4 35 72 34 40.99648 -94.72864 EAST NODAWAY R. 1 WASTE STABILIZATION LAGOON 9721001 0023531 10/31/2021 CORRECTIONVILLE CITY OF STP 3 6 88 42 42.45823 -95.76803 LITTLE SIOUX R. 1 WASTE STABILIZATION LAGOON 1078 180 0.106 0.2378 WL IL 5280301 0077992 1/31/2025 CORRIDOR RIDGE SUBDIVISION-SHUEYVILLE 6 4 81 07 41.84915 -91.65797 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 SEPTIC TANK SAND FILTER 171 29 0.0168 0.0168 4109001 0021351 1/31/2022 CORWITH CITY OF STP 2 6 94 26 42.99109 -93.95096 BOONE R. 1 AERATED LAGOON 497 83 0.05 0.2 WL IL 9334004 0049573 6/30/2026 CORYDON CITY OF STP 5 30 69 21 40.75038 -93.31619 CHARITON R. 1 AERATED LAGOON 2335 390 0.359 0.936 WL IL 5200801 0068331 8/31/2022 COTTAGE RESERVE CORPORATION 6 29 81 06 41.79313 -91.56633 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 TRICKLING FILTER 221 37 0.022 0.022 7820001 0036641 11/30/2025 COUNCIL BLUFFS CITY OF STP 4 31 74 43 41.16933 -95.83707 PIGEON AND MOSQUITO CR.S 1 TRICKLING FILTER 186228 31100 6.5 14 WW IV 7820000 0077470 12/31/2018 COUNCIL BLUFFS NARROWS TREATMENT PLANT 4 22 75 44 41.27782 -95.88174 PIGEON AND MOSQUITO CR.S 1 OTHER 7820003 0078271 12/31/2022 COUNCIL BLUFFS, CITY OF MS4 4 36 75 44 41.25754 -95.85103 PIGEON AND MOSQUITO CR.S 1 NO TREATMENT 7820004 0082074 8/31/2022 COUNCIL POINT WATER PURIFICATION PLANT 4 23 74 44 41.19549 -95.87629 KEG AND WAUBONSIE CR.S 1 OTHER 0600601 0077330 1/31/2026 COUNTRY AIRE TRAILER COURT-STP 1 27 83 09 41.96385 -91.87609 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 2 TRICKLING FILTER 102 17 0.003 0.005 8300901 0066214 2/29/2024 COUNTRY CARE CENTER CORPORATION 4 36 79 39 41.60736 -95.33036 WEST NISHNABOTNA R. 1 WASTE STABILIZATION LAGOON 61 10.2 0.006 5900201 0074551 10/31/2020 COUNTRY CONDOS-STP 5 27 72 21 41.00167 -93.26816 CHARITON R. 1 SEPTIC TANK WETLAND 18 3 0.0015 0.002 8200601 0065471 8/31/2023 COUNTRY ESTATES MOBILE HOME PARK 6 7 80 04 41.75646 -90.53634 WAPSIPINICON R. BELOW ANAMOSA 1 WASTE STABILIZATION LAGOON 180 30 0.018 6500602 0082201 11/30/2020 COUNTRY ESTATES MOBILE HOME PARK 4 6 73 43 41.16007 -95.83463 PIGEON AND MOSQUITO CR.S 1 WASTE STABILIZATION LAGOON 8500601 0068527 11/30/2021 COUNTRY LIVING COURT, LLC 5 13 83 22 41.99381 -93.3538 SKUNK R. ABOVE THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 99 16.6 0.0069 7700605 0068004 8/31/2025 COUNTRY LIVING MOBILE HOME PARK 5 34 80 23 41.6883 -93.50396 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 AERATED LAGOON 375 46.7 0.028 0.038 4500901 0083461 3/31/2017 COUNTRY WINDS MANOR, INC. 1 16 99 11 43.39937 -92.146 UPPER IOWA R. 1 WASTE STABILIZATION LAGOON 72 12 0.0068 8556450 0079561 6/30/2021 Couser Cattle Company 5 19 84 22 42.06971 -93.46024 SKUNK R. ABOVE THE NORTH SKUNK 1 OTHER 0790122 0077437 9/22/2013 COVENANT MEDICAL CENTER 1 3 88 13 42.46317 -92.34636 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 NO TREATMENT 7561286 0077585 6/30/2022 Craig Anderson Feedlot 3 16 91 46 42.69247 -96.27246 FLOYD R. 1 OTHER 7521001 0075850 3/31/2025 CRAIG, CITY OF STP (SOUTHERN SIOUX CO. RURAL WATER SYSTEM) 3 8 93 46 42.8938 -96.29988 FLOYD R. 1 WASTE STABILIZATION LAGOON 116 19.4 0.01 0.012 9214001 0076074 1/31/2024 CRAWFORDSVILLE, CITY OF (WAPELLO RURAL WATER ASSN) 6 15 74 06 41.21022 -91.53281 SKUNK R. BELOW THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 341 57 0.032 0.032 WL IL 7822001 0076431 9/30/2022 CRESCENT CITY OF STP 4 23 76 44 41.36549 -95.87545 PIGEON AND MOSQUITO CR.S 1 WASTE STABILIZATION LAGOON 587 98 0.058 WL IL 3126802 0081850 5/31/2026 CRESCENT COMMUNITY HEALTH CENTER 1 24 89 02 42.5104 -90.66592 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 NO TREATMENT 4515001 0021334 6/30/2026 CRESCO CITY OF STP 1 13 99 11 43.39114 -92.09551 UPPER IOWA R. 1 ACTIVATED SLUDGE 7605 1270 0.575 2.436 WW III 4800715 0065480 4/30/2025 CREST COUNTRY INN 6 33 80 10 41.68977 -92.01374 IOWA R. BELOW NORTH LIBERTY 1 WASTE STABILIZATION LAGOON 36 6 0.0021 8816001 0035238 12/31/2025 CRESTON CITY OF STP 4 11 72 31 41.04806 -94.38972 PLATTE R. 1 TRICKLING FILTER 17964 3000 1.1 3.6 WW III 8816000 0078514 10/11/2011 CRESTON CITY WATER TREATMENT PLANT 4 12 72 30 41.05918 -94.39482 GRAND R. 1 PRIMARY TREATMENT 0.457 8822001 0074063 6/30/2016 CROMWELL, CITY-STP -SIRWA 4 7 72 31 41.04681 -94.46193 PLATTE R. 1 WASTE STABILIZATION LAGOON 122 20 0.012 WL IL 2326110 0003522 1/31/2024 CROSS ROADS LAND DEVELOPMENT, LLC 6 29 81 06 41.79629 -90.28316 MISSISSIPPI R. NEAR CLINTON 1 ACTIVATED SLUDGE 100 17 0.01 0.01 4356318 0080667 3/31/2023 Crossroads Cattle Company 4 28 81 42 41.79341 -95.73212 BOYER R. 1 OTHER 5600100 0003387 4/30/2024 CRYOTECH DEICING TECHNOLOGY 6 14 67 05 40.60155 -91.39338 MISSISSIPPI R. NEAR FORT MADISON 1 NO TREATMENT 4115001 0062367 6/30/2016 CRYSTAL LAKE CITY OF STP 2 15 97 25 43.22238 -93.78756 IOWA R. ABOVE ALBION 1 WASTE STABILIZATION LAGOON 322 54 0.033 0.033 WL IL 4515103 0064955 10/26/2009 CULLIGAN WATER CONDITIONING OF CRESCO 1 22 99 11 43.37167 -92.12433 UPPER IOWA R. 1 OTHER 1516001 0034363 9/30/2019 CUMBERLAND CITY OF STP 4 28 75 35 41.2707 -94.87314 NODAWAY R. 1 WASTE STABILIZATION LAGOON 317 53 0.041 WL IL 9725001 0023477 1/31/2025 CUSHING CITY OF STP 3 2 88 42 42.4651 -95.68875 LITTLE SIOUX R. 1 WASTE STABILIZATION LAGOON 337 56 0.031 0.031 WL IL 7860582 0076040 7/1/2014 Cyclone Cattle, LLC 4 18 74 40 41.20385 -95.49125 WEST NISHNABOTNA R. 1 OTHER 7414001 0064823 3/31/2023 CYLINDER CITY OF STP 3 31 96 31 43.08974 -94.55984 DES MOINES R. ABOVE THE EAST FORK DES MOINES 1 WASTE STABILIZATION LAGOON 122 20.4 0.012 0.03 WL IL 6066014 0081990 1/31/2024 D & B Feedlot 3 32 98 48 43.2728 -96.54115 BIG SIOUX R. ABOVE THE ROCK 1 OTHER 3065340 0082970 9/30/2025 D & G Farms 3 3 98 37 43.32977 -95.20303 LITTLE SIOUX R. 1 OTHER

42 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Region Section Town Range Latitude Longitude FAC DES BASIN Design Treatment Type PE Design BOD ADW Flow AWW Opcert Opcert Number Flow Type Grade 8466282 0083500 8/31/2026 D & H Feedlot 3 13 97 47 43.225 -96.33901 ROCK R. 1 OTHER 9300104 0077895 3/31/2024 DAIRICONCEPTS, L.P. 5 11 68 22 40.70781 -93.36495 MEDICINE AND LOCUST CR.S 1 ACTIVATED SLUDGE 9670 1615 0.078 0.081 4622001 0048003 3/31/2022 DAKOTA CITY CITY OF STP 2 6 91 28 42.72524 -94.19536 EAST FORK DES MOINES R. 1 ACTIVATED SLUDGE 1328 222 0.0837 0.3 WW II 2520001 0035319 7/31/2021 DALLAS CENTER CITY OF STP 5 12 79 27 41.67278 -93.94802 NORTH RACCOON R. 2 ADVANCED AERATED LAGOON 1988 332 0.27 1.2 WL II 7666839 0083933 12/31/2022 Dallas Janssen Heifer Ranch 3 13 91 32 42.6903 -94.57764 DES MOINES R. ABOVE THE EAST FORK DES MOINES 1 OTHER 6058490 0084239 7/31/2024 Damon Bahnson Combined Operation 3 31 99 47 43.33152 -96.43868 BIG SIOUX R. ABOVE THE ROCK 1 LAND APPLICATION 9766009 0084182 10/31/2023 Dan Burkhart Site #2 Feedlot 3 26 87 44 42.31432 -95.92271 WEST FORK LITTLE SIOUX R. 1 LAND APPLICATION 9729001 0035246 9/30/2022 DANBURY CITY OF STP 3 27 86 42 42.22799 -95.71954 MAPLE R. 1 WASTE STABILIZATION LAGOON 599 100 0.062 0.102 WL IL 2915001 0025861 11/30/2024 DANVILLE CITY OF STP 6 22 70 04 40.85082 -91.3106 SKUNK R. BELOW THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 1222 204 0.13 0.83 WL IL 8461591 0083011 9/30/2023 Darin Green Feedlot 3 13 97 44 43.22455 -95.98421 FLOYD R. 1 OTHER 8456598 0053218 6/30/2025 Darin Smith 3 1 96 47 43.12948 -96.38465 BIG SIOUX R. BELOW THE ROCK 1 OTHER 2326104 0000914 1/31/2022 DARLING INGREDIENTS INC. 6 23 81 06 41.81317 -90.22317 MISSISSIPPI R. NEAR CLINTON 1 NO TREATMENT 8222003 0043052 6/30/2026 DAVENPORT CITY OF STP 6 9 77 03 41.49245 -90.62798 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 2 ACTIVATED SLUDGE 389222 65000 26 26 WW IV 8222005 0078808 6/30/2024 DAVENPORT, CITY OF MS4 6 12 78 03 41.56803 -90.55791 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 1 NO TREATMENT 8222004 0076261 4/30/2023 DAVENPORT, CITY OF-WEST LOCUST LAGOON 6 24 78 02 41.54442 -90.68498 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 1 WASTE STABILIZATION LAGOON 240 40 0.024 0.024 WL IL 3056816 0080128 2/28/2022 David and Dan Lorch Combined Operation 3 6 98 38 43.33825 -95.37706 LITTLE SIOUX R. 1 OTHER 2715001 0060232 4/30/2025 DAVIS CITY, CITY OF STP (SIRWA) 5 1 67 26 40.63111 -93.80584 THOMPSON R. 1 AERATED LAGOON 399 66.7 0.026 0.09 WL IL 2600901 0065846 12/31/2015 DAVIS COUNTY CARE FACILITY 6 4 68 13 40.72156 -92.3584 FOX AND WYACONDA R.S 1 WASTE STABILIZATION LAGOON 70 12 0.0067 9900124 0077411 7/31/2023 DAYBREAK FOODS INC - VINCENT FARM - LAOP 2 20 90 26 42.59563 -93.94223 BOONE R. 1 AERATED LAGOON 20958 3500 0.065 9425001 0023558 2/28/2022 DAYTON CITY OF STP 2 24 86 28 42.2465 -94.05917 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 WASTE STABILIZATION LAGOON 614 103 0.088 0.186 WL IL 2718001 0072745 1/31/2016 DECATUR CITY-STP-SIRWA 5 27 69 26 40.73955 -93.82887 THOMPSON R. 1 WASTE STABILIZATION LAGOON 180 30 0.0177 0.0177 WL IL 9630101 0003794 5/31/2012 DECO PRODUCTS CO. 1 21 98 08 43.29556 -91.79315 UPPER IOWA R. 1 NO TREATMENT 9630001 0035220 8/31/2022 DECORAH CITY OF STP 1 23 98 08 43.29451 -91.74684 UPPER IOWA R. 1 ACTIVATED SLUDGE 29341 4900 1.33 4.32 WW IV 9630502 0084000 5/31/2022 DECORAH COMM SCH DIST - THOMAS R. ROBERTS HIGH SCHOOL 1 16 98 08 43.30623 -91.78697 UPPER IOWA R. 1 NO TREATMENT 1433001 0035181 10/31/2024 DEDHAM CITY OF STP 4 16 82 34 41.91312 -94.81742 MIDDLE AND SOUTH RACCOON R.S 1 WASTE STABILIZATION LAGOON 350 60 0.035 WL IL 7915001 0071943 6/30/2026 DEEP RIVER, CITY OF STP 5 9 78 13 41.57208 -92.37498 IOWA R. BELOW NORTH LIBERTY 1 WASTE STABILIZATION LAGOON 373 62 0.0275 0.0359 WL IL 1856511 0079618 8/31/2022 Deer Run Ranch 3 6 93 39 42.90275 -95.48621 LITTLE SIOUX R. 1 OTHER 8315001 0042862 6/30/2023 DEFIANCE CITY OF STP 4 13 81 39 41.82552 -95.33619 WEST NISHNABOTNA R. 1 WASTE STABILIZATION LAGOON 449 75 0.0475 WL IL 2813001 0062855 9/30/2018 DELAWARE CITY OF STP 1 32 89 04 42.47376 -91.33759 MAQUOKETA R. 1 WASTE STABILIZATION LAGOON 207 35 0.0204 0.0204 WL IL 2817001 0047848 11/30/2021 DELHI CITY OF STP 1 20 88 04 42.41939 -91.32588 MAQUOKETA R. 2 WASTE STABILIZATION LAGOON 838 140 0.09 0.103 WL IL 2328001 0061913 4/30/2021 DELMAR, CITY OF STP 6 15 83 03 41.99227 -90.60039 MAQUOKETA R. 1 WASTE STABILIZATION LAGOON 728 121.5 0.0694 WL IL 2421001 0020826 7/31/2022 DELOIT CITY OF STP 4 18 84 38 42.09058 -95.32205 BOYER R. 1 WASTE STABILIZATION LAGOON 225 37.5 0.025 WL IL 5417001 0070742 4/30/2024 DELTA CITY OF STP 6 11 75 13 41.31849 -92.33462 NORTH SKUNK R. 1 AERATED LAGOON 461 77 0.028 0.063 WL IL 2424001 0023302 12/31/2025 DENISON MUNICIPAL UTILITIES-STP 4 10 83 39 42.01265 -95.37884 BOYER R. 2 ACTIVATED SLUDGE 249491 41665 3.67 4.17 WW IV 2424000 0077160 4/30/2023 DENISON MUNICIPAL WTP 4 10 83 39 42.01367 -95.36749 BOYER R. 1 OTHER 0.0576 0.1152 5617901 0073326 5/31/2026 DENMARK SANITARY DISTRICT STP 6 28 69 04 40.74799 -91.33419 SKUNK R. BELOW THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 553 92.4 0.044 WL IL 0915001 0044156 2/28/2022 DENVER CITY OF STP 1 35 91 13 42.65428 -92.3453 CEDAR R. ABOVE THE SHELLROCK R. 2 ACTIVATED SLUDGE 3293 550 0.37 0.65 WW III 5909001 0080322 1/31/2024 DERBY CITY OF STP 5 24 71 23 40.93919 -93.46128 CHARITON R. 1 WASTE STABILIZATION LAGOON 135 23 0.0135 WL IL 7500123 0053180 9/17/2024 DERBY TRUCKING - LAOP 3 11 91 46 42.71396 -96.25122 FLOYD R. 1 LAND APPLICATION 54 9 0.0037 7727137 0076511 5/31/2020 DES MOINES - NAHAS AQUATIC CENTER 5 28 78 24 41.53389 -93.62935 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 NO TREATMENT 7727008 0075931 4/30/2022 DES MOINES INTERNATIONAL AIRPORT 5 29 78 24 41.53227 -93.64645 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 NO TREATMENT 7727001 0044130 2/28/2021 DES MOINES METROPOLITAN WRF 5 7 78 23 41.57231 -93.55766 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 ACTIVATED SLUDGE 1E+06 195550 50 134 WW IV 7727127 0069671 1/31/2025 DES MOINES TCE SUPERFUND SITE 5 8 78 24 41.5797 -93.63928 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 OTHER 2503401 0082104 1/31/2016 DES MOINES WEST KOA (NOW RECREATIONAL ADVENTURES CO.) 5 21 78 28 41.54174 -94.07987 NORTH RACCOON R. 1 WASTE STABILIZATION LAGOON 81 14 0.0056 7727007 0075540 6/30/2024 DES MOINES, CITY OF MS4 5 4 78 24 41.58749 -93.62084 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 NO TREATMENT 2529001 0056821 3/31/2025 DESOTO CITY OF STP 5 30 78 27 41.53021 -93.99924 DES MOINES R. BELOW THE EAST FORK DES MOINES 2 TRICKLING FILTER 1359 227 0.09 0.63 WW II 0712901 0063908 10/31/2021 DEWAR SANITARY DISTRICT STP 1 14 89 12 42.52347 -92.22229 SHELLROCK R. 1 WASTE STABILIZATION LAGOON 305 51 0.03 0.03 WL IL 2330001 0035271 11/30/2021 DEWITT CITY OF STP 6 19 81 04 41.81113 -90.54194 WAPSIPINICON R. BELOW ANAMOSA 2 OXIDATION DITCH 10096 1686 1.2 2.14 WW III 2533001 0058661 2/28/2026 DEXTER CITY OF STP 5 31 78 29 41.50616 -94.22369 NORTH RACCOON R. 1 WASTE STABILIZATION LAGOON 958 160 0.088 0.14 WL IL 8456302 0080349 9/30/2022 DG Farms, Inc. 3 1 96 43 43.17094 -95.86198 FLOYD R. 1 OTHER 8018001 0063401 11/30/2023 DIAGONAL CITY OF STP 4 6 69 30 40.80643 -94.35414 GRAND R. 1 WASTE STABILIZATION LAGOON 368 61 0.0373 WL IL 3900300 0068381 4/30/2024 DIAMONDHEAD LAKE 4 11 78 30 41.56148 -94.26526 MIDDLE AND SOUTH RACCOON R.S 1 WASTE STABILIZATION LAGOON 509 85 0.0564 2109001 0080691 1/31/2023 DICKENS WASTEWATER TREATMENT FACILITY 3 24 96 36 43.12669 -95.03378 LITTLE SIOUX R. 1 WASTE STABILIZATION LAGOON 228 38 0.0167 0.0222 WL IL 3800600 0061689 11/30/2024 DIETRICK MOBILE HOME PARK, INC. 2 1 88 15 42.46943 -92.54827 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 2 WASTE STABILIZATION LAGOON 204 34 0.015 0.029 3815001 0023311 8/31/2025 DIKE CITY OF STP 2 5 88 15 42.45777 -92.62807 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 2 OXIDATION DITCH 2605 435 0.26 0.79 WW III 8225001 0033022 2/28/2026 DIXON CITY OF STP 6 18 80 02 41.74053 -90.775 WAPSIPINICON R. BELOW ANAMOSA 1 WASTE STABILIZATION LAGOON 455 76 0.037 0.045 WL IL 2800904 0075876 11/6/2006 DNR BACKBONE STATE PARK (CABINS & SPILLWAY) 1 15 90 06 42.60083 -91.53389 MAQUOKETA R. 1 SEPTIC TANK SAND FILTER 89 14.8 0.007 0.0089 2800903 0066044 11/6/2006 DNR BACKBONE STATE PARK (LOWER AREA) 1 15 90 06 42.6025 -91.54249 MAQUOKETA R. 1 AERATED LAGOON 90 15.1 0.0092 0.0093 3500901 0067385 4/30/2025 DNR BEEDS LAKE STATE PARK 2 20 92 20 42.76841 -93.23274 WEST FORK CEDAR R. 1 AERATED LAGOON 126 21 0.0235 0.033 4900900 0066010 12/31/2024 DNR BELLEVUE STATE PARK 1 29 86 05 42.22361 -90.40083 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 WASTE STABILIZATION LAGOON 24 4 0.0021 0.0021 2200900 0054828 2/28/2025 DNR BIG SPRING TROUT HATCHERY 1 31 94 05 42.91038 -91.47407 TURKEY R. 1 NO TREATMENT 9700800 0063622 6/30/2022 DNR BROWN'S LAKE 3 31 87 47 42.30163 -96.35904 MISSOURI R. FROM SIOUX CITY TO THE LITTLE SIOUX 1 NO TREATMENT 9400904 0076945 6/30/2017 DNR BRUSHY CREEK ST. PARK - S.EQUESTRIAN CAMPGROUND 2 10 87 27 42.36343 -93.97693 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 WASTE STABILIZATION LAGOON 53 9 0.005 9400903 0074543 6/30/2017 DNR BRUSHY CREEK ST.PARK-N.EQUESTRIAN CAMPGROUND 2 33 88 27 42.38389 -93.99454 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 WASTE STABILIZATION LAGOON 290 49 0.0138 9600901 0054798 2/28/2025 DNR DECORAH STATE HATCHERY 1 27 98 08 43.27481 -91.78004 UPPER IOWA R. 1 OTHER 4400901 0052732 4/30/2021 DNR GEODE STATE PARK 6 36 70 05 40.82263 -91.38112 SKUNK R. BELOW THE NORTH SKUNK 2 WASTE STABILIZATION LAGOON 30 5.01 0.003 0.003 0400922 0081221 3/11/2013 DNR HONEY CREEK RESORT STATE PARK 5 5 70 18 40.89212 -92.94994 DES MOINES R. BELOW WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 623 104 0.031 0.044 0400914 0075949 3/5/2011 DNR HONEY CREEK STATE PARK-(IA.OP.PERMIT) 5 16 70 18 40.86662 -92.93971 CHARITON R. 1 LAND APPLICATION 150 25 0.011 0.011 8900904 0081361 4/30/2018 DNR LACEY KEOSAUQUA STATE PARK 6 11 68 10 40.70009 -91.98654 DES MOINES R. BELOW WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 24 4 0.0021 9100900 0066001 1/21/2008 DNR LAKE AHQUABI STATE PARK 5 14 75 24 41.29767 -93.59386 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 36 6 0.0036 0.0036 5200900 0072079 12/31/2024 DNR LAKE MACBRIDE STATE PARK-CAMPGROUND 6 29 81 06 41.79996 -91.5755 IOWA R. BELOW NORTH LIBERTY 1 AERATED LAGOON 75 13 0.0078 0.0082 8700902 0075515 7/31/2020 DNR LAKE OF THREE FIRES STATE PARK 4 7 68 33 40.71142 -94.68458 HUNDRED AND TWO 1 AERATED LAGOON 178 30 0.0088 0.0126 2600902 0076694 1/31/2022 DNR LAKE WAPELLO STATE PARK 6 34 70 15 40.82311 -92.58079 DES MOINES R. BELOW WHITEBREAST CR. 1 AERATED LAGOON 80 13.3 0.0103 0.0122 0800903 0077127 4/26/2014 DNR LEDGES STATE PARK 5 21 83 26 41.99167 -93.87555 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 AERATED LAGOON 52 9 0.0059 0.0059 2800900 0002275 3/31/2025 DNR MANCHESTER TROUT HATCHERY 1 2 88 05 42.46086 -91.39588 MAQUOKETA R. 1 OTHER 101 4900903 0076473 6/30/2017 DNR MAQUOKETA CAVES STATE PARK 1 6 84 01 42.11907 -90.77234 MAQUOKETA R. 1 WASTE STABILIZATION LAGOON 53 9 0.0038 2200902 0075400 7/31/2025 DNR PIKES PEAK STATE PARK-STP 1 34 95 03 42.99701 -91.17665 YELLOW R. AND PAINT CR. 1 AERATED LAGOON 56 9 0.0053 0.0056 4100900 0066028 2/28/2025 DNR PILOT KNOB STATE PARK 2 4 97 23 43.25411 -93.55995 WINNEBAGO R. 1 WASTE STABILIZATION LAGOON 30 5 0.0012 5700402 0078425 1/31/2023 DNR PLEASANT CREEK STATE RECREATION AREA 1 32 85 08 42.12648 -91.80739 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 WASTE STABILIZATION LAGOON 19 3 0.0009 0.0019 5700403 0078433 1/31/2023 DNR Pleasant Creek State Recreation Area 1 32 85 08 42.12829 -91.80953 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 WASTE STABILIZATION LAGOON 68 11 0.0044 8300900 0077119 7/31/2018 DNR PRAIRIE ROSE STATE PARK 4 4 78 38 41.59679 -95.2179 WEST NISHNABOTNA R. 1 WASTE STABILIZATION LAGOON 15 3 0.0014 0.0014 0400913 0054844 6/30/2024 DNR RATHBUN FISH HATCHERY 5 25 70 18 40.82283 -92.88092 CHARITON R. 1 WASTE STABILIZATION LAGOON 180 30 0.008 9700401 0063631 6/30/2022 DNR SNYDER-WINNEBAGO LAKE STP 3 8 86 47 42.28464 -96.33753 MISSOURI R. FROM SIOUX CITY TO THE LITTLE SIOUX 1 OTHER 3900900 0075272 8/31/2023 DNR SPRINGBROOK STATE PARK-EDUCATION CENTER 4 4 80 31 41.7676 -94.45818 MIDDLE AND SOUTH RACCOON R.S 1 AERATED LAGOON 48 8 0.0047 0.0048 6900900 0066036 5/31/2026 DNR VIKING LAKE STATE PARK 4 12 71 37 40.96403 -95.04399 NODAWAY R. 2 ADVANCED AERATED LAGOON 78 13 0.0002 0.0126 3300902 0082317 11/30/2014 DNR VOLGA RIVER RECREATIONAL AREA WWTP 1 2 93 08 42.89695 -91.76405 TURKEY R. 1 WASTE STABILIZATION LAGOON 84 14 0.005 3215001 0082147 10/31/2025 DOLLIVER, CITY OF STP 3 22 100 32 43.465 -94.6182 EAST FORK DES MOINES R. 1 TRICKLING FILTER 81 13.6 0.006 0.008 WW II 8227001 0029017 12/31/2022 DONAHUE CITY OF STP 6 36 80 02 41.69687 -90.68217 WAPSIPINICON R. BELOW ANAMOSA 2 WASTE STABILIZATION LAGOON 527 88 0.03 0.058 WL IL 5620001 0035335 5/31/2024 DONNELLSON CITY OF STP 6 5 67 06 40.63549 -91.56487 DES MOINES R. BELOW WHITEBREAST CR. 1 ADVANCED AERATED LAGOON 1916 320 0.145 0.228 WL II

43 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Region Section Town Range Latitude Longitude FAC DES BASIN Design Treatment Type PE Design BOD ADW Flow AWW Opcert Opcert Number Flow Type Grade 6015001 0023736 7/31/2023 DOON CITY OF STP 3 35 98 46 43.26848 -96.23637 ROCK R. 1 WASTE STABILIZATION LAGOON 451 75 0.044 WL IL 8926001 0076031 2/28/2026 DOUDS/LEANDO,CITY OF(RATHBUN REGIONAL WATER ASSOC) 6 35 70 11 40.82412 -92.09069 DES MOINES R. BELOW WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 180 30 0.0236 WL IL 2427001 0034371 4/30/2023 DOW CITY, CITY OF STP 4 3 82 40 41.93629 -95.49377 BOYER R. 1 WASTE STABILIZATION LAGOON 796 133 0.08 WL IL 9921001 0042811 6/30/2024 DOWS CITY OF STP 2 36 91 23 42.64852 -93.50333 IOWA R. ABOVE ALBION 1 AERATED LAGOON 1377 230 0.109 0.267 WL IL 2618001 0075612 1/31/2026 DRAKESVILLE, CITY OF-(RATHBUN REGIONAL WATER ASSOC.) 6 9 69 14 40.79028 -92.47083 FOX AND WYACONDA R.S 1 WASTE STABILIZATION LAGOON 180 30 0.0172 WL IL 8464489 0083054 4/30/2025 Dry Creek Farms, Inc. 3 11 96 46 43.14296 -96.25166 BIG SIOUX R. BELOW THE ROCK 1 OTHER 3126001 0044458 10/31/2024 DUBUQUE CITY OF STP 1 6 88 03 42.46952 -90.65984 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 2 ACTIVATED SLUDGE 246707 41200 9.14 13.47 WW IV 3126901 0081876 2/29/2024 DUBUQUE COUNTY COURTHOUSE 1 24 89 02 42.50104 -90.66452 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 NO TREATMENT 3126902 0081884 6/30/2024 DUBUQUE COUNTY SHERIFF OFFICE 1 24 89 02 42.5011 -90.66543 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 NO TREATMENT 3100804 0082031 4/30/2024 DUBUQUE RESIDENTIAL FACILITY 1 24 89 02 42.50816 -90.66365 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 NO TREATMENT 3126004 0078671 10/31/2024 DUBUQUE, CITY OF MS4 1 24 89 02 42.50533 -90.66744 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 NO TREATMENT 1240001 0033316 12/31/2022 DUMONT CITY OF STP 2 33 92 18 42.73946 -92.97235 WEST FORK CEDAR R. 1 AERATED LAGOON 719 120 0.13 0.423 WL IL 4100901 0065901 4/30/2026 DUNCAN HEIGHTS CARE FACILITY 2 29 96 24 43.1076 -93.70255 IOWA R. ABOVE ALBION 1 WASTE STABILIZATION LAGOON 71 11 0.0055 0.0055 9427001 0027413 2/28/2026 DUNCOMBE CITY OF STP 2 35 89 27 42.4722 -94.00569 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 WASTE STABILIZATION LAGOON 588 100 0.07 0.105 WL IL 2821001 0062839 7/31/2022 DUNDEE CITY OF STP 1 28 90 06 42.58461 -91.55404 MAQUOKETA R. 1 WASTE STABILIZATION LAGOON 232 39 0.023 WL IL 0717001 0042790 12/31/2022 DUNKERTON CITY OF STP 1 29 90 11 42.57875 -92.16107 WAPSIPINICON R. ABOVE ANAMOSA 1 WASTE STABILIZATION LAGOON 1455 243 0.1715 WL IL 4316001 0042871 8/31/2023 DUNLAP CITY OF STP 4 3 81 41 41.85204 -95.60907 BOYER R. 1 WASTE STABILIZATION LAGOON 1593 266 0.154 WL IL 7036001 0064891 7/31/2022 DURANT CITY OF STP 6 1 78 01 41.59439 -90.90873 CEDAR R. BELOW CEDAR RAPIDS 2 ACTIVATED SLUDGE 2605 435 0.2 0.358 WW III 3130001 0023345 4/30/2025 DYERSVILLE CITY OF STP 1 6 88 02 42.46543 -91.11505 MAQUOKETA R. 2 ACTIVATED SLUDGE 14371 2400 0.571 1.179 WW III 8627001 0020745 6/30/2022 DYSART CITY OF STP 5 23 85 13 42.15236 -92.32612 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 AERATED LAGOON 1976 330 0.23 0.83 WL IL 9926001 0034380 11/30/2024 EAGLE GROVE, CITY OF STP 2 34 91 26 42.64875 -93.90679 BOONE R. 2 OXIDATION DITCH 33545 5602 2.5 4.15 WW IV 6115001 0027421 8/31/2024 EARLHAM CITY OF STP 5 6 77 28 41.49643 -94.11385 MIDDLE AND SOUTH RACCOON R.S 1 AERATED LAGOON 2036 340 0.19 0.85 WL IL 8320001 0025364 7/31/2026 EARLING CITY OF STP 4 1 80 40 41.76211 -95.45459 PIGEON AND MOSQUITO CR.S 1 AERATED LAGOON 533 89 0.0067 0.183 WL IL 2825001 0042773 4/30/2025 EARLVILLE CITY OF STP 1 36 89 04 42.47602 -91.26744 MAQUOKETA R. 1 TRICKLING FILTER 970 162 0.075 0.085 WW II 8114001 0035904 5/31/2025 EARLY CITY OF STP 3 9 88 37 42.45788 -95.15777 BOYER R. 1 WASTE STABILIZATION LAGOON 617 103 0.065 0.081 WL IL 4800401 0075213 7/31/2026 EAST IOWA BIBLE CAMP-STP 6 11 78 12 41.57941 -92.21547 IOWA R. BELOW NORTH LIBERTY 1 SEPTIC TANK SAND FILTER 60 10 0.0004 0.0065 6122001 0079791 9/30/2022 EAST PERU CITY OF STP (WARREN WATER DISTRICT) 5 1 74 27 41.23264 -93.91736 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 186 31.1 0.0183 0.0183 WL IL 8456490 0078107 9/30/2022 East Valley Farm, Inc. (Site 1) 3 2 96 46 43.1679 -96.23574 BIG SIOUX R. BELOW THE ROCK 1 OTHER 2900605 0068241 5/31/2023 ECHO VALLEY MOBILE HOME PARK NO. 2 6 21 70 03 40.85524 -91.211 FLINT R. 1 AERATED LAGOON 102 17 0.01 0.015 2900601 0067725 3/24/2003 ECHO VALLEY MOBILE HOME PARK NO.1 6 21 70 03 40.85153 -91.21671 FLINT R. 1 AERATED LAGOON 72 12 0.0056 0.0069 9049001 0020770 1/31/2022 EDDYVILLE, CITY OF STP 6 6 73 15 41.15066 -92.62745 DES MOINES R. BELOW WHITEBREAST CR. 1 AERATED LAGOON 4491 750 0.217 0.626 WL IL 5000600 0067717 3/31/2025 EDGETOWN MOBILE HOME PARK 5 22 80 19 41.72759 -93.05791 SKUNK R. ABOVE THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 60 10 0.0045 2820001 0024490 6/30/2022 EDGEWOOD CITY OF STP 1 2 90 05 42.64435 -91.4026 MAQUOKETA R. 2 ADVANCED AERATED LAGOON 2335 390 0.13 0.314 WL II 3087101 0053277 1/31/2023 EDGEWOOD DR. INFRASTRUCTURE IMPROVEMENTS 3 26 99 37 43.36581 -95.17728 LITTLE SIOUX R. 1 NO TREATMENT 3126118 0076821 11/30/2022 EDWARDS CAST STONE COMPANY 1 35 89 02 42.47159 -90.69071 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 OTHER 8456276 0079189 9/30/2025 Eilts Feedlot 3 33 95 46 42.99736 -96.28721 BIG SIOUX R. BELOW THE ROCK 1 OTHER 9400114 0070661 11/30/2022 ELANCO FORT DODGE 2 13 89 29 42.52006 -94.20764 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 NO TREATMENT 8631001 0061964 4/30/2016 ELBERON CITY OF STP 5 14 82 13 42.00435 -92.3287 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 WASTE STABILIZATION LAGOON 228 38 0.0207 0.0225 WL IL 9053001 0022306 8/31/2024 ELDON CITY OF STP 6 35 71 12 40.90065 -92.20588 DES MOINES R. BELOW WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 1916 320 0.1916 WL IL 4236001 0025933 7/31/2025 ELDORA CITY OF STP 2 8 87 19 42.355 -93.08254 IOWA R. ABOVE ALBION 2 SEQUENCING BATCH REACTOR 7383 1233 0.694 1.515 WW III 8230003 0063231 10/31/2025 ELDRIDGE CITY OF STP (SOUTH SLOPE) 6 26 79 03 41.62047 -90.57434 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 2 SEQUENCING BATCH REACTOR 16671 2784 1.1 2.4 WW IV 8230004 0084468 7/31/2024 ELDRIDGE, CITY OF MS4 6 1 77 05 41.6549 -90.58948 WAPSIPINICON R. BELOW ANAMOSA 1 NO TREATMENT 3338001 0024414 1/31/2022 ELGIN CITY OF STP 1 13 94 07 42.96219 -91.62379 TURKEY R. 2 AERATED LAGOON 736 123 0.058 0.364 WL IL 1500106 0052718 5/31/2022 ELITE OCTANE, LLC 4 31 77 36 41.41722 -95.02958 EAST NISHNABOTNA R. 1 NO TREATMENT 8325001 0027677 8/31/2026 ELK HORN CITY OF STP 4 2 78 37 41.5813 -95.07182 EAST NISHNABOTNA R. 1 WASTE STABILIZATION LAGOON 1115 186 0.1026 0.1026 WL IL 0721001 0034231 4/30/2023 ELK RUN HEIGHTS CITY OF STP 1 33 89 12 42.47442 -92.26141 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 ACTIVATED SLUDGE 4042 675 0.278 0.281 WW III 0721002 0078280 4/30/2025 ELK RUN HEIGHTS, CITY OF MS4 1 33 88 12 42.46926 -92.26075 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 NO TREATMENT 2223001 0021962 4/30/2022 ELKADER CITY OF STP 1 26 93 05 42.84449 -91.39829 TURKEY R. 2 ACTIVATED SLUDGE 1934 323 0.169 0.733 WW II 7730001 0021326 9/30/2019 ELKHART CITY OF STP 5 27 81 23 41.79564 -93.5164 SKUNK R. ABOVE THE NORTH SKUNK 1 AERATED LAGOON 389 65 0.052 0.127 WL IL 7825001 0034398 2/25/2012 ELLIOTT CITY OF STP 4 36 74 38 41.16226 -95.1662 EAST NISHNABOTNA R. 1 WASTE STABILIZATION LAGOON 665 111 0.0744 WL IL 4009001 0026280 8/31/2022 ELLSWORTH CITY OF STP 2 36 87 24 42.30406 -93.59272 SKUNK R. ABOVE THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 3772 630 0.203 WL IL 4525001 0021075 5/31/2024 ELMA CITY OF STP 1 1 97 14 43.24188 -92.44849 WAPSIPINICON R. ABOVE ANAMOSA 1 ACTIVATED SLUDGE 1946 325 0.078 0.4 WW II 2334901 0062791 7/31/2016 ELWOOD COMMUNITY SANITARY DISTRICT 6 16 83 02 41.98966 -90.73719 MAQUOKETA R. 1 WASTE STABILIZATION LAGOON 219 37 0.0194 WL IL 5728001 0047988 12/31/2022 ELY CITY OF STP 1 31 82 06 41.8661 -91.58574 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 2 ACTIVATED SLUDGE 4491 750 0.3 0.5 WW III 5728002 0084476 6/30/2024 ELY, CITY OF MS4 1 1 82 05 41.87481 -91.58628 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 NO TREATMENT 6520001 0024562 4/30/2023 EMERSON CITY OF STP 4 26 72 40 41.01219 -95.4061 WEST NISHNABOTNA R. 1 WASTE STABILIZATION LAGOON 611 102 0.0769 WL IL 7428002 0021580 10/31/2025 EMMETSBURG CITY OF STP 3 36 96 33 43.09506 -94.68833 DES MOINES R. ABOVE THE EAST FORK DES MOINES 1 ROTATING BIOLOGICAL 6886 1150 0.62 1.5 WW III 3133001 0036463 1/31/2026 EPWORTH CITY OF STP 1 14 88 01 42.43804 -90.91854 MAQUOKETA R. 2 ACTIVATED SLUDGE 4593 767 0.21 0.58 WW III 2326112 0000191 12/31/2022 EQUISTAR CHEMICALS, LP 6 20 81 06 41.80971 -90.29054 MISSISSIPPI R. NEAR CLINTON 1 ACTIVATED SLUDGE 10180 1700 1.7 8222108 0060305 4/30/2022 ESCP CORPORATION 6 34 78 03 41.52115 -90.60471 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 1 NO TREATMENT 7349001 0026603 3/23/2008 ESSEX CITY OF STP 4 27 70 39 40.83249 -95.31004 EAST NISHNABOTNA R. 1 WASTE STABILIZATION LAGOON 853 143 0.111 0.9 WL IL 3218002 0023744 12/31/2025 ESTHERVILLE CITY OF STP 3 24 99 34 43.37424 -94.81552 DES MOINES R. ABOVE THE EAST FORK DES MOINES 1 TRICKLING FILTER 80838 13500 2 3.5 WW IV 0723001 0022004 8/31/2022 EVANSDALE CITY OF STP 1 1 88 13 42.46241 -92.30367 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 ACTIVATED SLUDGE 6641 1109 0.636 1.517 WW III 0723002 0078654 1/31/2026 EVANSDALE, CITY OF MS4 1 32 89 12 42.47752 -92.2879 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 NO TREATMENT 5715121 0003093 11/30/2020 EVERGREEN PACKAGING LLC 1 32 83 07 41.9543 -91.6775 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 NO TREATMENT 0.134 0.134 2115001 0028916 5/31/2022 EVERLY CITY OF STP 3 3 96 38 43.15712 -95.31119 LITTLE SIOUX R. 2 ADVANCED AERATED LAGOON 671 112 0.065 0.785 WL II 0520001 0027987 1/31/2022 EXIRA CITY OF STP 4 4 78 35 41.57971 -94.89093 EAST NISHNABOTNA R. 2 WASTE STABILIZATION LAGOON 928 155 0.0715 0.128 WL IL 0426001 0074381 2/28/2015 Exline, City of, STP 5 32 68 17 40.64889 -92.83361 CHARITON R. 1 WASTE STABILIZATION LAGOON 190 32 0.0187 0.0206 WL IL 1025001 0035041 10/31/2021 FAIRBANK CITY OF STP 1 5 90 10 42.63351 -92.05 WAPSIPINICON R. ABOVE ANAMOSA 2 ACTIVATED SLUDGE 1826 305 0.062 0.282 WW II 5131101 0001074 4/30/2022 FAIRCAST INC. 6 26 72 10 41.01107 -91.97493 SKUNK R. BELOW THE NORTH SKUNK 1 NO TREATMENT 5731001 0030694 7/31/2024 FAIRFAX CITY OF STP 1 9 82 08 41.92253 -91.77608 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 2 ACTIVATED SLUDGE 4192 700 0.4 0.6 WW III 5131000 0082325 9/30/2025 FAIRFIELD WATERWORKS 6 24 72 10 41.01813 -91.95521 SKUNK R. BELOW THE NORTH SKUNK 1 OTHER 5131001 0035076 5/31/2026 FAIRFIELD, CITY OF STP 6 6 71 09 40.97904 -91.94494 SKUNK R. BELOW THE NORTH SKUNK 2 OXIDATION DITCH 29593 4942 1.3 4.2 WW IV 8462532 0078379 5/31/2025 Fairview Feeders 3 16 97 48 43.22345 -96.51961 BIG SIOUX R. ABOVE THE ROCK 1 OTHER 5322001 0082929 6/30/2021 FAIRVIEW, COMMUNITY OF 1 20 84 04 42.0695 -91.331 WAPSIPINICON R. BELOW ANAMOSA 1 WASTE STABILIZATION LAGOON 205 34 0.0188 WL IL 3135001 0044032 4/30/2025 FARLEY CITY OF STP 1 7 88 01 42.45097 -91.00839 LITTLE MAQUOKETA R. 2 ACTIVATED SLUDGE 2353 393 0.164 0.794 WW III 2228001 0028495 9/30/2021 FARMERSBURG CITY OF STP 1 18 94 04 42.95894 -91.35787 TURKEY R. 1 WASTE STABILIZATION LAGOON 389 65 0.0314 WL IL 8930001 0060313 9/30/2022 FARMINGTON CITY OF STP 6 1 67 08 40.62561 -91.73719 DES MOINES R. BELOW WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 1102 184 0.0937 WL IL 1320001 0028967 2/28/2023 FARNHAMVILLE CITY OF STP 3 12 86 31 42.27123 -94.40816 NORTH RACCOON R. 1 AERATED LAGOON 467 78 0.0461 0.053 WL IL 3615001 0023493 10/31/2022 FARRAGUT CITY OF STP 4 36 69 41 40.72874 -95.50202 EAST NISHNABOTNA R. 1 WASTE STABILIZATION LAGOON 449 75 0.034 0.044 WL IL 3342001 0027456 8/31/2024 FAYETTE CITY OF STP 1 28 93 08 42.84281 -91.79101 TURKEY R. 2 AERATED LAGOON 1850 309 0.093 0.438 WL IL 5100201 0075906 12/31/2024 FBP, LLC 6 2 72 10 41.06368 -91.9684 SKUNK R. BELOW THE NORTH SKUNK 1 SEPTIC TANK SAND FILTER 48 8 0.004 0.004 5515001 0081396 4/30/2016 FENTON CITY OF STP 2 19 97 30 43.20873 -94.4235 EAST FORK DES MOINES R. 1 WASTE STABILIZATION LAGOON 323 54 0.025 0.032 WL IL 9820001 0058718 3/31/2026 FERTILE CITY OF STP 2 35 98 22 43.26324 -93.40873 WINNEBAGO R. 1 WASTE STABILIZATION LAGOON 593 99 0.056 WL IL 9600302 0075442 10/31/2021 FESTINA-WINNESHIEK COUNTY-STP 1 23 96 09 43.11688 -91.87064 TURKEY R. 1 SEPTIC TANK SAND FILTER 102 17 0.01 0.01 WW W 3937900 0076465 6/30/2022 FIREFLY CREEK RANCH 4 11 79 31 41.66941 -94.42086 MIDDLE AND SOUTH RACCOON R.S 1 WASTE STABILIZATION LAGOON 43 7 0.005 7700100 0000671 9/3/2008 FIRESTONE AGRICULTURAL TIRE CO. 5 15 79 24 41.64473 -93.62047 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 OTHER 6469102 0000230 9/30/2024 FISHER CONTROLS INTERNATIONAL LLC (MAIN OFFICE) 5 35 84 18 42.027 -92.89082 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 NO TREATMENT 9768119 0052174 2/28/2022 Fleck Farms Feedlot 3 8 87 43 42.36011 -95.86901 WEST FORK LITTLE SIOUX R. 1 LAND APPLICATION

44 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Region Section Town Range Latitude Longitude FAC DES BASIN Design Treatment Type PE Design BOD ADW Flow AWW Opcert Opcert Number Flow Type Grade 4200121 0078841 2/28/2015 FLINT HILLS RESOURCES (NOW POET BIOREFINING - IOWA FALLS, LLC) 2 24 89 21 42.50701 -93.27494 IOWA R. ABOVE ALBION 1 NO TREATMENT 3900903 0081311 1/14/2013 FLINT HILLS RESOURCES MENLO (NOW POET BIOREFINING - MENLO) 4 26 78 31 41.52369 -94.37854 NORTH RACCOON R. 1 NO TREATMENT 2622000 0074047 1/31/2016 FLORIS, CITY OF- (WAPELLO RURAL WATER ASSN.) 6 15 70 13 40.8716 -92.33301 DES MOINES R. BELOW WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 180 30 0.017 WL IL 3414001 0028894 10/31/2024 FLOYD CITY OF STP 2 16 96 16 43.13408 -92.73216 CEDAR R. ABOVE THE SHELLROCK R. 1 AERATED LAGOON 719 120 0.025 0.07 WL IL 4000201 0082309 11/30/2025 FLYING J NO. 572 2 6 88 23 42.4705 -93.57204 SKUNK R. ABOVE THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 99 17 0.0124 8222201 0074110 6/30/2025 FLYING J TRAVEL PLAZA NO. 636 - DAVENPORT 6 33 79 03 41.60348 -90.6261 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 1 OXIDATION DITCH 7603002 0046671 1/31/2022 FONDA CITY OF STP 3 26 90 34 42.57503 -94.82457 NORTH RACCOON R. 1 WASTE STABILIZATION LAGOON 1146 191 0.128 WL IL 0135001 0041840 6/30/2023 FONTANELLE CITY OF STP 4 19 75 32 41.28021 -94.57065 NODAWAY R. 1 AERATED LAGOON 784 131 0.057 0.398 WL IL 9525001 0021563 4/30/2025 FOREST CITY CITY OF STP 2 12 98 24 43.23582 -93.61815 WINNEBAGO R. 1 ROTATING BIOLOGICAL 8982 1500 0.53 1.65 WW III 9641001 0072176 1/31/2024 FORT ATKINSON CITY OF STP 1 8 96 09 43.14761 -91.92972 TURKEY R. 1 WASTE STABILIZATION LAGOON 403 67.3 0.0367 0.0367 WL IL 9433003 0044849 9/30/2025 FORT DODGE CITY OF STP 2 29 89 28 42.48682 -94.18216 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 ACTIVATED SLUDGE 162659 27164 8.4 15 WW IV 5625001 0027219 9/30/2024 FORT MADISON CITY OF STP 6 9 67 04 40.62279 -91.33307 MISSISSIPPI R. NEAR FORT MADISON 2 ACTIVATED SLUDGE 59880 10000 2.92 7.29 WW IV 5625000 0081001 1/31/2024 FORT MADISON WATER TREATMENT PLANT 6 33 67 05 40.55239 -91.43379 MISSISSIPPI R. NEAR FORT MADISON 1 OTHER 2122001 0061841 8/31/2023 FOSTORIA CITY OF STP 3 7 97 36 43.22724 -95.14266 LITTLE SIOUX R. 1 WASTE STABILIZATION LAGOON 336 56 0.033 WL IL 5710801 0076732 9/30/2025 FOUR OAKS GROUP HOME - BERTRAM CAMPUS 1 34 83 06 41.95656 -91.52796 CEDAR R. BELOW CEDAR RAPIDS 1 ACTIVATED SLUDGE 72 12 0.006 0.006 1940001 0028991 1/26/2008 FREDERICKSBURG CITY OF STP 1 12 94 12 42.97164 -92.21094 WAPSIPINICON R. ABOVE ANAMOSA 1 AERATED LAGOON 20120 3360 0.35 0.9 WL I 0922001 0058939 7/31/2024 FREDERIKA CITY OF STP 1 7 93 12 42.87694 -92.30178 WAPSIPINICON R. ABOVE ANAMOSA 1 WASTE STABILIZATION LAGOON 295 49.3 0.0295 WL IL 6234001 0056791 3/31/2017 FREMONT CITY OF STP 5 22 74 14 41.20461 -92.44996 SKUNK R. BELOW THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 743 124 0.07 WL IL 7900104 0083577 5/31/2024 FREMONT FARMS OF IOWA L.L.P. - LAOP 5 15 80 15 41.73555 -92.57162 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 LAND APPLICATION 3500 0.06 4715001 0056537 6/30/2026 GALVA CITY OF STP 3 23 89 39 42.509 -95.41751 MAPLE R. 1 TRICKLING FILTER 431 72 0.035 0.074 WW II 2725001 0069175 10/31/2022 GARDEN GROVE CITY OF STP 5 27 70 24 40.83372 -93.60844 THOMPSON R. 1 WASTE STABILIZATION LAGOON 329 55 0.0315 WL IL 2234001 0026697 4/2/2008 GARNAVILLO CITY OF STP 1 19 93 03 42.85753 -91.23963 TURKEY R. 1 AERATED LAGOON 1030 172 0.072 0.194 WL IL 4130002 0036153 2/29/2024 GARNER CITY OF STP 2 32 96 23 43.09005 -93.59454 IOWA R. ABOVE ALBION 2 SEQUENCING BATCH REACTOR 3563 595 0.343 0.873 WW III 0625001 0056804 5/31/2023 GARRISON CITY OF STP 1 33 85 11 42.13767 -92.1361 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 WASTE STABILIZATION LAGOON 419 70 0.068 WL IL 8637001 0025925 6/30/2020 GARWIN CITY OF STP 5 14 84 16 42.08471 -92.67619 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 WASTE STABILIZATION LAGOON 766 128 0.075 WL IL 1856935 0084042 7/31/2024 Gary Rupp Combined Operation 3 11 90 42 42.62676 -95.77956 LITTLE SIOUX R. 1 OTHER 2900901 0065447 7/31/2025 GATEWAY CENTER CARE FACILITY-STP 6 27 70 03 40.84013 -91.19294 FLINT R. 1 WASTE STABILIZATION LAGOON 114 19 0.0078 5200201 0074985 3/31/2024 GATEWAY COMMERCIAL CONDOMINIUM ASSOCIATION 6 5 79 05 41.67222 -91.44972 IOWA R. BELOW NORTH LIBERTY 1 AERATED LAGOON 734 122.5 0.072 0.098 6066047 0082058 8/31/2025 Gaylon Rozeboom Feedlot 3 16 99 46 43.39075 -96.2847 ROCK R. 1 OTHER 9700101 0004413 1/31/2023 GELITA USA, INC. 3 18 87 47 42.34994 -96.35407 MISSOURI R. FROM SIOUX CITY TO THE LITTLE SIOUX 1 AERATED LAGOON 93600 15600 5.4 7700121 0052209 10/31/2024 GENERAL MILLS AVON PLANT 5 28 78 23 41.52495 -93.50527 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 NO TREATMENT 6028001 0036081 9/30/2022 GEORGE CITY OF STP 3 2 98 44 43.33221 -96.01865 ROCK R. 2 WASTE STABILIZATION LAGOON 1174 196 0.091 0.218 WL IL 7078101 0061972 5/31/2022 GERDAU 6 02 78 02 41.58787 -91.04051 CEDAR R. BELOW CEDAR RAPIDS 1 OTHER 8531001 0025968 5/31/2025 GILBERT, CITY OF STP 5 9 84 24 42.0998 -93.65899 SKUNK R. ABOVE THE NORTH SKUNK 2 ADVANCED AERATED LAGOON 2653 443 0.141 0.428 WL II 0733001 0028177 5/31/2022 GILBERTVILLE CITY OF STP 1 26 88 12 42.41196 -92.21213 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 ACTIVATED SLUDGE 731 122 0.12 0.2 WW II 6436001 0029033 9/30/2022 GILMAN CITY OF STP 5 27 82 17 41.87766 -92.80508 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 AERATED LAGOON 731 122 0.0484 0.4484 WL IL 7607001 0031194 10/31/2018 GILMORE CITY, CITY OF STP 3 1 91 31 42.73207 -94.45607 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 WASTE STABILIZATION LAGOON 1198 200 0.051 0.081 WL IL 8640001 0025330 12/31/2022 GLADBROOK CITY OF STP 5 10 85 16 42.18844 -92.70866 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 AERATED LAGOON 1287 215 0.114 0.28 WL IL 1438001 0024571 4/30/2021 GLIDDEN CITY OF STP 4 29 84 33 42.0556 -94.72043 MIDDLE AND SOUTH RACCOON R.S 1 ACTIVATED SLUDGE 3593 600 0.1 0.3 WW III 6525001 0021946 10/31/2024 GMU WASTEWATER TREATMENT FACILITY 4 27 72 43 41.009 -95.7709 KEG AND WAUBONSIE CR.S 1 ROTATING BIOLOGICAL 16240 2712 1.256 1.43 WW III 1700127 0078735 10/31/2022 GOLDEN GRAIN ENERGY, LLC 2 20 96 20 43.11247 -93.2303 WINNEBAGO R. 1 NO TREATMENT 9937001 0036137 7/31/2018 GOLDFIELD CITY OF STP 2 32 92 26 42.73398 -93.93889 BOONE R. 1 WASTE STABILIZATION LAGOON 3473 580 0.121 0.121 WL IL 2339001 0056944 7/31/2021 GOOSE LAKE CITY OF STP 6 28 83 05 41.96914 -90.38608 MAQUOKETA R. 1 WASTE STABILIZATION LAGOON 392 66 0.0369 WL IL 9436001 0020966 6/30/2024 GOWRIE MUNICIPAL UTILITIES 2 12 86 30 42.27284 -94.29785 NORTH RACCOON R. 1 AERATED LAGOON 1389 232 0.09 0.72 WL IL 7445001 0027821 10/31/2022 GRAETTINGER CITY OF STP 3 10 97 33 43.23344 -94.7363 DES MOINES R. ABOVE THE EAST FORK DES MOINES 1 WASTE STABILIZATION LAGOON 826 138 0.081 0.163 WL IL 9825001 0062529 8/31/2022 GRAFTON CITY OF STP 2 10 98 19 43.32143 -93.07487 SHELLROCK R. 1 WASTE STABILIZATION LAGOON 341 57 0.0205 0.0283 WL IL 7048101 0003441 6/30/2021 GRAIN PROCESSING CORPORATION 6 10 76 02 41.40201 -91.0629 MUSCATINE ISLAND 1 ACTIVATED SLUDGE 407185 68000 3.5 3100605 0063240 12/2/2006 GRANADA GARDENS MOBILE HOME PARK 1 33 90 02 42.56528 -90.72222 LITTLE MAQUOKETA R. 1 AERATED LAGOON 90 15 0.0083 0.0166 6000201 0083348 3/31/2016 GRAND FALLS CASINO RESORT 3 10 100 48 43.49822 -96.50287 BIG SIOUX R. ABOVE THE ROCK 1 SEQUENCING BATCH REACTOR 3545 592 0.0464 0.0811 3730001 0041891 1/31/2022 GRAND JUNCTION CITY OF STP 4 3 83 29 42.03115 -94.22146 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 WASTE STABILIZATION LAGOON 987 165 0.112 0.152 WL IL 2341001 0027642 12/31/2024 GRAND MOUND CITY OF STP 6 17 81 03 41.81658 -90.64608 WAPSIPINICON R. BELOW ANAMOSA 1 WASTE STABILIZATION LAGOON 796 133 0.105 WL IL 2760056 0077712 9/30/2024 Grand River Cattle Co, LLC 5 29 69 27 40.74277 -93.97713 THOMPSON R. 1 OTHER 3126121 0077399 5/31/2026 GRAND RIVER CENTER 1 30 89 03 42.49866 -90.6553 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 NO TREATMENT 2728001 0066346 10/31/2022 GRAND RIVER CITY OF STP 5 34 70 27 40.8178 -93.94789 THOMPSON R. 1 WASTE STABILIZATION LAGOON 204 34 0.016 0.02 WL IL 5842001 0062901 2/28/2025 GRANDVIEW CITY OF STP 6 27 75 03 41.26833 -91.18416 IOWA R. BELOW NORTH LIBERTY 2 AERATED LAGOON 766 128 0.073 0.166 WL IL 2537001 0041912 7/31/2021 GRANGER CITY OF STP 5 13 80 26 41.74438 -93.8242 DES MOINES R. BELOW THE EAST FORK DES MOINES 2 SEQUENCING BATCH REACTOR 4210 703 0.384 0.59 WW III 8429001 0043486 12/31/2022 GRANVILLE CITY OF STP 3 2 94 43 42.98916 -95.87992 FLOYD R. 1 WASTE STABILIZATION LAGOON 222 37 0.028 WL IL 8728001 0075957 2/28/2015 GRAVITY, CITY OF (SOUTHERN IOWA RURAL WATER ASSN.) 4 28 69 34 40.75555 -94.76862 HUNDRED AND TWO 1 WASTE STABILIZATION LAGOON 222 37 0.0218 WL IL 7700119 0077941 4/30/2022 GREATER DES MOINES ENERGY CENTER 5 17 78 23 41.55747 -93.5269 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 NO TREATMENT 2831001 0040291 10/31/2022 GREELEY CITY OF STP 1 29 90 04 42.57607 -91.34666 MAQUOKETA R. 1 WASTE STABILIZATION LAGOON 518 86.5 0.048 WL IL 2900603 0067733 6/28/2014 GREEN ACRES MOBILE HOME PARK 6 20 70 02 40.85358 -91.10935 FLINT R. 1 WASTE STABILIZATION LAGOON 341 57 0.0169 6440001 0048236 5/31/2026 GREEN MOUNTAIN - IOWA REGIONAL UTILITIES ASSOC. 5 9 84 17 42.10136 -92.82865 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 WASTE STABILIZATION LAGOON 282 47.1 0.014 0.024 WL IL 3600102 0082210 4/30/2026 GREEN PLAINS SHENANDOAH, LLC 4 25 69 40 40.75704 -95.39978 EAST NISHNABOTNA R. 1 NO TREATMENT 3000105 0081281 10/31/2023 GREEN PLAINS SUPERIOR, LLC 3 34 100 35 43.43246 -94.95308 DES MOINES R. ABOVE THE EAST FORK DES MOINES 1 NO TREATMENT 8800100 0003964 4/30/2016 GREEN VALLEY CHEMICAL CORPORATION 4 18 73 30 41.11653 -94.35686 THOMPSON R. 1 WASTE STABILIZATION LAGOON 1253001 0035432 6/30/2026 GREENE CITY OF STP 2 7 93 16 42.88447 -92.78908 SHELLROCK R. 2 ADVANCED AERATED LAGOON 1695 283.1 0.068 0.334 WL II 0140001 0021369 9/30/2019 GREENFIELD CITY OF STP 4 18 75 31 41.2978 -94.45574 THOMPSON R. 1 TRICKLING FILTER 2910 486 0.311 1.08 WW II 0140000 0048453 12/31/2021 GREENFIELD MUNICIPAL UTILITIES WTP 4 13 75 32 41.3019 -94.48334 THOMPSON R. 1 OTHER 2133001 0079260 6/30/2021 GREENVILLE, CITY OF STP 3 30 95 36 43.01543 -95.14249 LITTLE SIOUX R. 1 SEPTIC TANK WETLAND 157 26 0.0099 0.0099 WW W 6556217 0077909 8/31/2021 Gregory Feedlots North, Inc. 4 28 71 42 40.92031 -95.67438 KEG AND WAUBONSIE CR.S 1 OTHER 3663404 0079804 10/31/2021 Gregory Feedlots, Inc. (South Site) 4 7 70 41 40.87707 -95.59919 WEST NISHNABOTNA R. 1 OTHER 7736002 0078883 12/31/2024 GRIMES, CITY OF MS4 5 32 79 25 41.68857 -93.78842 NORTH RACCOON R. 1 NO TREATMENT 7736001 0035939 1/31/2021 GRIMES, CITY OF STP 5 29 80 25 41.70307 -93.79382 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 ACTIVATED SLUDGE 10623 1774 0.58 2.13 WW III 7930001 0031186 12/31/2024 GRINNELL, CITY OF STP 5 19 80 16 41.71983 -92.74925 NORTH SKUNK R. 2 OXIDATION DITCH 17551 2931 1.666 4.236 WW IV 1528001 0031411 4/30/2022 GRISWOLD CITY OF STP 4 7 74 37 41.22551 -95.15193 EAST NISHNABOTNA R. 1 WASTE STABILIZATION LAGOON 1275 213 0.106 0.347 WL IL 6056953 0080900 8/31/2023 Groeneweg Livestock Facility 3 18 100 47 43.4864 -96.43031 ROCK R. 1 OTHER 3833001 0024511 8/31/2024 GRUNDY CENTER CITY OF STP 2 7 87 16 42.36643 -92.76295 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 SEQUENCING BATCH REACTOR 7784 1300 0.4 1.2 WW III 3225001 0077488 8/31/2023 GRUVER CITY OF 3 13 99 33 43.39171 -94.68757 DES MOINES R. ABOVE THE EAST FORK DES MOINES 1 WASTE STABILIZATION LAGOON 204 34 0.0199 WL IL 3937001 0041866 10/31/2022 GUTHRIE CENTER CITY OF STP 4 18 79 31 41.65935 -94.50181 MIDDLE AND SOUTH RACCOON R.S 1 WASTE STABILIZATION LAGOON 2222 371 0.2789 WL IL 3900103 0075361 9/30/2024 GUTHRIE CENTER EGG FARM 4 36 78 32 41.69573 -94.52205 MIDDLE AND SOUTH RACCOON R.S 1 AERATED LAGOON 22335 3730 0.12 0.12 3900106 0053064 10/28/2024 GUTHRIE CENTER EGG FARM - LAOP 4 36 080 32 41.69573 -94.52205 MIDDLE AND SOUTH RACCOON R.S 1 AERATED LAGOON 22325 3730 0.12 0.12 2242001 0022284 4/30/2026 GUTTENBERG CITY OF STP 1 20 92 02 42.77017 -91.09911 MISSISSIPPI R. ABOVE THE TURKEY R. 1 AERATED LAGOON 2749 459 0.3 0.8 WL IL 1444001 0075817 10/31/2023 HALBUR CITY OF (WEST CENTRAL IA RURAL WATER ASSN) 4 18 83 35 41.99984 -94.9686 MIDDLE AND SOUTH RACCOON R.S 1 WASTE STABILIZATION LAGOON 216 36 0.0215 WL IL 9756605 0081132 4/30/2023 Hamann Feedlot 3 11 87 42 42.35644 -95.69257 LITTLE SIOUX R. 1 OTHER 3621001 0048321 11/30/2022 HAMBURG CITY OF STP 4 27 67 42 40.59548 -95.64685 NISHNABOTNA R. 1 WASTE STABILIZATION LAGOON 1886 315 0.252 WL IL 3544001 0036471 9/30/2021 HAMPTON CITY OF STP 2 34 92 20 42.74435 -93.1942 WEST FORK CEDAR R. 2 SEQUENCING BATCH REACTOR 11790 1969 0.687 1.374 WW III 7833001 0023485 7/31/2024 HANCOCK CITY OF STP 4 18 76 39 41.38986 -95.37402 WEST NISHNABOTNA R. 1 WASTE STABILIZATION LAGOON 407 68 0.025 WL IL 7556900 0078581 5/31/2026 Hansen Feed Yards 3 10 90 47 42.62896 -96.39 PERRY CR. 1 OTHER 6056433 0081159 4/30/2023 Hansmann Feedlot 3 25 99 44 43.37337 -95.998 ROCK R. 1 OTHER

45 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Region Section Town Range Latitude Longitude FAC DES BASIN Design Treatment Type PE Design BOD ADW Flow AWW Opcert Opcert Number Flow Type Grade 9442001 0076244 1/31/2023 HARCOURT, CITY OF STP 2 14 86 29 42.26659 -94.18464 NORTH RACCOON R. 1 WASTE STABILIZATION LAGOON 365 61 0.018 0.036 WL IL 8335002 0021342 1/31/2024 HARLAN CITY OF STP 4 30 79 38 41.63121 -95.30825 WEST NISHNABOTNA R. 1 ROTATING BIOLOGICAL 9281 1550 0.657 1.777 WW III 8335000 0084387 5/31/2026 HARLAN MUNICIPAL UTILITIES WATER TREATMENT PLANT 4 19 79 38 41.64497 -95.31701 WEST NISHNABOTNA R. 1 OTHER 5428001 0079359 2/28/2026 HARPER, CITY OF STP 6 30 76 10 41.35199 -92.04588 NORTH SKUNK R. 1 WASTE STABILIZATION LAGOON 137 23 0.01 0.0134 WL IL 0330001 0070564 11/30/2022 HARPERS FERRY, CITY OF STP 1 13 97 03 43.22308 -91.1356 YELLOW R. AND PAINT CR. 1 AERATED LAGOON 1575 263 0.088 0.11 WL IL 7222001 0036048 9/30/2022 HARRIS CITY OF STP 3 34 100 39 43.44493 -95.44574 LITTLE SIOUX R. 1 WASTE STABILIZATION LAGOON 299 50 0.0116 0.0225 WL IL 9128001 0066761 9/30/2021 HARTFORD CITY OF STP 5 17 77 22 41.46516 -93.41427 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 AERATED LAGOON 1317 220 0.13 0.26 WL IL 7128001 0036480 6/30/2024 HARTLEY CITY OF STP 3 32 97 39 43.17406 -95.46778 LITTLE SIOUX R. 1 OXIDATION DITCH 2904 485 0.24 0.78 WW III 5000603 0065668 9/30/2023 HARVESTER GOLF CLUB DEVELOPMENT 5 5 81 20 41.8627 -93.2101 SKUNK R. ABOVE THE NORTH SKUNK 2 WASTE STABILIZATION LAGOON 407 68 0.036 0.04 6338001 0072338 11/30/2022 HARVEY CITY OF STP 5 10 75 18 41.31611 -92.91429 DES MOINES R. BELOW WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 281 47 0.021 WL IL 6527001 0079758 4/30/2023 HASTINGS, CITY OF STP 4 24 72 41 41.02239 -95.5047 WEST NISHNABOTNA R. 1 WASTE STABILIZATION LAGOON 329 55 0.014 0.025 WL IL 8459740 0079499 5/31/2023 Haverhals Feedlot 3 6 95 46 43.06988 -96.32922 BIG SIOUX R. BELOW THE ROCK 1 OTHER 8434001 0021083 6/30/2024 HAWARDEN CITY OF STP 3 34 95 48 42.9975 -96.49333 BIG SIOUX R. BELOW THE ROCK 1 ACTIVATED SLUDGE 14497 2421 0.14 0.672 WW III 5600602 0068063 12/31/2015 HAWES ENTERPRISES LLC 6 17 65 05 40.43457 -91.46153 DES MOINES R. BELOW WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 253 43 0.0053 5600605 0067938 4/27/2013 HAWES INVESTMENTS (NOW DENNINGS BROTHERS LLC, SERIES III) 6 4 65 05 40.46261 -91.4424 MISSISSIPPI R. NEAR FORT MADISON 1 WASTE STABILIZATION LAGOON 78 13 0.005 3346001 0036072 4/30/2025 HAWKEYE CITY OF STP 1 30 94 09 42.93139 -91.95239 TURKEY R. 2 WASTE STABILIZATION LAGOON 575 96 0.03 0.071 WL IL 4100201 0083160 8/31/2024 HAWKEYE PRIDE EGG FARMS, L.L.P. 2 21 94 26 42.94885 -93.91362 BOONE R. 1 WASTE STABILIZATION LAGOON 102 17 0.0075 4100203 0053115 3/11/2024 HAWKEYE PRIDE EGG FARMS, L.L.P. - LAOP 2 21 94 26 42.94542 -93.91838 BOONE R. 1 LAND APPLICATION 2326115 0068101 5/31/2026 HAWKINS - CAMANCHE 6 22 81 06 41.80886 -90.23986 MISSISSIPPI R. NEAR CLINTON 1 NO TREATMENT 1031001 0044024 10/31/2022 HAZLETON CITY OF STP 1 16 90 09 42.61282 -91.9156 WAPSIPINICON R. ABOVE ANAMOSA 1 WASTE STABILIZATION LAGOON 1018 170 0.17 WL IL 5432001 0036498 11/30/2025 HEDRICK CITY OF STP 6 26 74 13 41.18182 -92.3303 SKUNK R. ABOVE THE NORTH SKUNK 2 ACTIVATED SLUDGE 982 164 0.103 0.465 WW II 6529001 0061590 7/31/2023 HENDERSON CITY OF STP 4 10 73 40 41.1396 -95.43865 WEST NISHNABOTNA R. 1 WASTE STABILIZATION LAGOON 240 40 0.021 WL IL 5640106 0063045 4/30/2022 HENDRICKS RIVER LOGISTICS, LLC 6 19 66 04 40.49405 -91.37554 MISSISSIPPI R. NEAR FORT MADISON 1 OTHER 4800205 0074225 3/31/2023 HERITAGE INN AMANA COLONIES 6 32 80 09 41.689 -91.91285 IOWA R. BELOW NORTH LIBERTY 1 ACTIVATED SLUDGE 359 60 0.029 0.029 5735000 0078743 1/31/2026 HIAWATHA, CITY OF MS4 1 33 84 07 42.03878 -91.6742 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 NO TREATMENT 3100302 0063991 2/28/2022 HICKORY ACRES SUBDIVISION 1 25 88 02 42.40888 -90.66939 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 ACTIVATED SLUDGE 509 85 0.05 0.05 8500600 0067814 1/31/2025 HICKORY GROVE COURT, LLC 5 18 84 23 42.07852 -93.58099 SKUNK R. ABOVE THE NORTH SKUNK 2 SEPTIC TANK SAND FILTER 66 11 0.0069 0.0069 8600900 0066940 9/30/2025 HICKORY HILLS PARK 5 13 86 13 42.26529 -92.30814 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 WASTE STABILIZATION LAGOON 48 8 0.0018 5600301 0076970 2/10/2007 HIDDEN OAKS ESTATES SUBDIVISION-STP 6 25 68 04 40.65667 -91.37583 MISSISSIPPI R. NEAR FORT MADISON 1 SEPTIC TANK SAND FILTER 54 9 0.0051 0.0051 9000601 0067636 10/31/2017 HIDDEN VALLEY MHP (NOW BEAR CREEK FLATS) 6 28 72 14 41.00968 -92.47336 DES MOINES R. BELOW WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 175 29 0.0122 7557919 0080977 2/28/2023 Hiemstra Farms 3 8 90 43 42.62225 -95.94902 WEST FORK LITTLE SIOUX R. 1 OTHER 9200501 0070084 8/31/2022 HIGHLAND COMMUNITY SCHOOL 6 9 76 06 41.40932 -91.54132 IOWA R. BELOW NORTH LIBERTY 1 TRICKLING FILTER 30 5 0.0024 0.0032 5221002 0052894 8/31/2025 HILLS, CITY OF WWTF 6 22 78 06 41.54745 -91.53392 IOWA R. BELOW NORTH LIBERTY 1 AERATED LAGOON 1964 328 0.161 0.472 WL IL 4425001 0072435 6/30/2016 HILLSBORO CITY OF STP 6 31 70 07 40.82713 -91.71279 SKUNK R. BELOW THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 154 26 0.0151 WL IL 4800901 0065927 4/30/2018 HILLSIDE ESTATES CARE FACILITY (NOW BAYER PRODUCTION SUPPLY) 6 6 79 10 41.68277 -92.06449 IOWA R. BELOW NORTH LIBERTY 1 WASTE STABILIZATION LAGOON 71 11.9 0.007 0.007 7528001 0057053 1/31/2019 HINTON CITY OF STP 3 17 90 46 42.61272 -96.29488 FLOYD R. 1 WASTE STABILIZATION LAGOON 1275 213 0.0902 WL IL 1750116 0071951 11/30/2021 HOLCIM (US) INC. - WEST QUARRY 2 19 97 20 43.20754 -93.24925 WINNEBAGO R. 1 OTHER 3839001 0041254 4/30/2026 HOLLAND CITY OF STP 2 35 88 17 42.39399 -92.79556 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 WASTE STABILIZATION LAGOON 340 57 0.033 WL IL 4721001 0021954 12/31/2022 HOLSTEIN CITY OF STP 3 5 88 40 42.47234 -95.53623 MAPLE R. 1 WASTE STABILIZATION LAGOON 1946 325 0.355 WL IL 3146001 0025992 3/31/2024 HOLY CROSS CITY OF STP 1 17 90 01 42.60557 -90.99524 MAQUOKETA R. 1 WASTE STABILIZATION LAGOON 467 78 0.044 0.056 WL IL 1900107 0081981 12/17/2013 HOMELAND ENERGY SOLUTIONS, LLC 1 1 95 12 43.07171 -92.20782 WAPSIPINICON R. ABOVE ANAMOSA 1 NO TREATMENT 8500603 0067806 12/31/2015 HOMESTEAD COLONY MOBILE HOME PARK 5 15 84 24 42.0787 -93.62384 SKUNK R. ABOVE THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 138 23 0.0096 4830901 0023591 4/30/2019 HOMESTEAD SANITARY DISTRICT 6 3 80 09 41.76145 -91.88648 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 WASTE STABILIZATION LAGOON 419 70 0.034 0.084 WL IL 8460406 0082520 8/31/2026 Hoogland Dairy 3 7 94 45 42.96872 -96.19986 FLOYD R. 1 OTHER 8456222 0077615 9/30/2024 Hoogland Feedlot 3 18 94 45 42.95344 -96.19602 FLOYD R. 1 OTHER 2835001 0023469 8/31/2025 HOPKINTON CITY OF STP 1 13 87 04 42.34264 -91.24895 MAQUOKETA R. 1 SEQUENCING BATCH REACTOR 1425 238 0.071 0.167 WW II 9738001 0036501 12/31/2023 HORNICK CITY OF STP 3 29 86 45 42.23429 -96.1033 WEST FORK LITTLE SIOUX R. 1 WASTE STABILIZATION LAGOON 380 63.5 0.035 WL IL 8439001 0036897 6/30/2023 HOSPERS CITY OF STP 3 10 95 43 43.06319 -95.90825 FLOYD R. 3 ACTIVATED SLUDGE 9222 1540 0.18 0.4 WW III 5633001 0036901 6/30/2016 HOUGHTON CITY OF STP 6 13 69 07 40.77741 -91.60315 MISSISSIPPI R. NEAR FORT MADISON 1 WASTE STABILIZATION LAGOON 338 57 0.0395 WL IL 4254001 0031429 11/30/2019 HUBBARD CITY OF STP 2 33 87 21 42.29647 -93.30733 IOWA R. ABOVE ALBION 1 WASTE STABILIZATION LAGOON 1132 189 0.067 0.136 WL IL 1100107 0076767 11/30/2024 HUBBARD FEEDS INC. 3 30 91 37 42.66916 -95.25945 NORTH RACCOON R. 1 NO TREATMENT 0737002 0027243 7/31/2023 HUDSON CITY OF STP 1 23 88 14 42.42129 -92.44222 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 AERATED LAGOON 5988 1000 0.22 0.6 WL I 0737003 0084484 5/31/2024 HUDSON, CITY OF MS4 1 1 87 11 42.40386 -92.45561 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 NO TREATMENT 8444001 0020991 5/31/2024 HULL CITY OF STP 3 23 97 45 43.20058 -96.12784 ROCK R. 2 ADVANCED AERATED LAGOON 4491 750 0.4 0.7 WL II 4641001 0047791 11/30/2025 HUMBOLDT CITY OF STP 2 13 91 29 42.70179 -94.21302 DES MOINES R. ABOVE THE EAST FORK DES MOINES 1 ACTIVATED SLUDGE 11198 1870 1.3 1.8 WW III 9348001 0043150 7/31/2022 HUMESTON CITY OF STP 5 10 70 23 40.87266 -93.49532 CHARITON R. 1 AERATED LAGOON 1048 175 0.11 0.27 WL IL 7157435 0080365 2/28/2023 Hunt Brothers Feedlot 3 17 94 42 42.96651 -95.84065 FLOYD R. 1 OTHER 5059104 0076121 3/31/2022 HUNT CLEANERS, INC. 5 26 80 19 41.71047 -93.03523 SKUNK R. ABOVE THE NORTH SKUNK 1 OTHER 0.03 0.055 8538002 0083518 4/30/2022 HUXLEY CITY OF STP 5 19 82 23 41.90303 -93.56919 SKUNK R. ABOVE THE NORTH SKUNK 1 ACTIVATED SLUDGE 5389 900 0.42 0.85 WW III 1600113 0071056 2/17/2010 HWH CORPORATION 6 17 79 02 41.64133 -91.10957 CEDAR R. BELOW CEDAR RAPIDS 1 AERATED LAGOON 60 10 0.0041 0.0041 1000905 0053285 2/1/2023 HWY 150 HMA PAVEMENT PROJECT 1 9 88 09 42.44637 -91.89017 WAPSIPINICON R. ABOVE ANAMOSA 1 NO TREATMENT 9800802 0084221 3/31/2026 I35-105 INTERCHANGE COMMERCIAL DISTRICT 2 31 100 21 43.44394 -93.36455 SHELLROCK R. 1 SEQUENCING BATCH REACTOR 2994 500 0.09 0.122 3100202 0081612 8/31/2023 ICE HARBOR CENTER 1 30 89 03 42.49823 -90.66038 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 NO TREATMENT 4728001 0020761 4/30/2026 IDA GROVE CITY OF STP 3 15 87 40 42.34661 -95.48223 MAPLE R. 1 ROTATING BIOLOGICAL 4976 831 0.29 0.39 WW II 5225110 0079235 8/31/2025 IIHR OAKDALE ANNEX 6 25 80 07 41.70559 -91.60595 IOWA R. BELOW NORTH LIBERTY 1 NO TREATMENT 1037001 0036510 9/30/2025 INDEPENDENCE CITY OF STP 1 10 88 09 42.45632 -91.88007 WAPSIPINICON R. ABOVE ANAMOSA 1 TRICKLING FILTER 49646 8291 1.8 4 WW III 9300601 0083691 6/30/2022 INDIAN RIDGE HOMEOWNERS ASSOCIATION 5 1 70 20 40.88757 -93.10287 CHARITON R. 1 AERATED LAGOON 80 13.4 0.0074 0.0074 9133001 0027669 6/30/2024 INDIANOLA CITY OF STP (NORTH) 5 14 76 24 41.3864 -93.5838 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 ACTIVATED SLUDGE 11557 1930 1.5 2.5 WW III 0375101 0059102 10/31/2022 INDUSTRIAL LAMINATES/NORPLEX INCORPORATED 1 33 96 06 43.09009 -91.55483 TURKEY R. 1 OTHER 3126123 0081591 4/30/2025 INTERSTATE BUILDING, LLLP 1 24 89 02 42.50267 -90.66838 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 NO TREATMENT 6040001 0031232 12/31/2022 INWOOD CITY OF STP 3 18 98 47 43.31649 -96.43009 BIG SIOUX R. ABOVE THE ROCK 2 WASTE STABILIZATION LAGOON 1156 193 0.245 WL IL 5200401 0067083 11/13/2013 IO-DIS-E-CA CAMP 6 24 81 07 41.81327 -91.60754 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 WASTE STABILIZATION LAGOON 50 8 0.005 1946001 0058777 4/30/2025 IONIA CITY OF STP 1 24 95 14 43.03205 -92.44471 WAPSIPINICON R. ABOVE ANAMOSA 1 WASTE STABILIZATION LAGOON 368 61 0.0355 WL IL 8222121 0079430 10/31/2024 IOWA AMERICAN WATER COMPANY EAST RIVER STATION 6 30 78 04 41.5284 -90.55023 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 1 OTHER 2900900 0022144 1/31/2025 IOWA ARMY AMMUNITION PLANT 6 7 69 03 40.79405 -91.24201 SKUNK R. BELOW THE NORTH SKUNK 1 TRICKLING FILTER 7700502 0075531 1/31/2024 IOWA ASSOCIATION OF MUNICIPAL UTILITIES 5 1 79 24 41.68759 -93.59261 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 SEPTIC TANK WETLAND 17 3 0.0018 0.0018 5200601 0066303 12/31/2025 IOWA CITY MOBILE HOME PARK 6 32 79 05 41.60727 -91.45989 IOWA R. BELOW NORTH LIBERTY 1 ACTIVATED SLUDGE 365 61 0.026 0.031 5225601 0063274 7/31/2021 IOWA CITY REGENCY MOBILE HOME PARK STP 6 34 79 06 41.6062 -91.53507 IOWA R. BELOW NORTH LIBERTY 1 ACTIVATED SLUDGE 503 84 0.035 0.067 5225000 0076082 12/31/2023 IOWA CITY WATER TREATMENT PLANT 6 33 80 06 41.68944 -91.54694 IOWA R. BELOW NORTH LIBERTY 1 OTHER 5225002 0070866 4/30/2025 IOWA CITY, CITY OF (SOUTH) STP 6 35 79 06 41.61061 -91.50418 IOWA R. BELOW NORTH LIBERTY 1 ACTIVATED SLUDGE 195557 32658 10.5 24.2 WW IV 5225005 0078298 5/31/2024 IOWA CITY, CITY OF MS4 6 10 79 06 41.66014 -91.52952 IOWA R. BELOW NORTH LIBERTY 1 NO TREATMENT 4800904 0072206 9/30/2024 IOWA COUNTY SANITARY LANDFILL 6 1 80 09 41.75929 -91.83837 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 2 AERATED LAGOON 419 70 0.006 0.026 4800802 0080969 7/31/2024 IOWA COUNTY WATER TREATMENT FACILITY 6 35 81 10 41.81936 -91.86313 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 OTHER 0100903 0068756 5/28/2014 IOWA DOT REST AREA #01-I80 ADAIR 4 5 77 32 41.49599 -94.55922 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 228 38 0.008 0100902 0068764 8/31/2019 IOWA DOT REST AREA #02 I80 ADAIR 4 6 77 32 41.49753 -94.57555 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 156 26 0.007 4800903 0067598 3/31/2021 IOWA DOT REST AREA #06 I80 VICTOR 6 34 80 12 41.69655 -92.23304 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 WASTE STABILIZATION LAGOON 569 95 0.016 8500902 0067555 7/31/2017 IOWA DOT REST AREA #19 I35 STORY CITY 5 5 84 23 42.10877 -93.55931 SKUNK R. ABOVE THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 137 23 0.0048 8500903 0067547 7/31/2017 IOWA DOT REST AREA #20 I35 STORY CITY 5 32 85 23 42.12727 -93.55123 SKUNK R. ABOVE THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 120 20 0.0039 7800903 0068896 1/31/2019 IOWA DOT REST AREA #23-I680 LOVELAND 4 1 77 44 41.49263 -95.84056 PIGEON AND MOSQUITO CR.S 1 WASTE STABILIZATION LAGOON 28 4.62 0.0022

46 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Region Section Town Range Latitude Longitude FAC DES BASIN Design Treatment Type PE Design BOD ADW Flow AWW Opcert Opcert Number Flow Type Grade 7800904 0068900 12/31/2023 IOWA DOT REST AREA #24-I680 LOVELAND 4 4 77 43 41.4989 -95.79588 PIGEON AND MOSQUITO CR.S 1 WASTE STABILIZATION LAGOON 39 6.55 0.0031 7800905 0068918 4/30/2024 IOWA DOT REST AREA #29 & #30 I80 UNDERWOOD 4 10 76 42 41.40186 -95.6603 PIGEON AND MOSQUITO CR.S 1 AERATED LAGOON 485 81 0.0098 0.0162 2700902 0068934 8/31/2018 IOWA DOT REST AREA #34 I35 LAMONI 5 28 68 26 40.65665 -93.85521 THOMPSON R. 1 WASTE STABILIZATION LAGOON 353 59 0.014 3500904 0077321 3/31/2025 IOWA DOT REST AREA I35 DOWS (IRUA) 2 29 91 22 42.67337 -93.46116 IOWA R. ABOVE ALBION 1 WASTE STABILIZATION LAGOON 305 51 0.011 0.011 4260001 0023442 8/31/2025 IOWA FALLS CITY OF STP 2 18 86 20 42.51875 -93.25287 IOWA R. ABOVE ALBION 1 TRICKLING FILTER 10461 1747 1.14 2.625 WW III 5600118 0052166 2/28/2026 IOWA FERTILIZER COMPANY 6 17 68 03 40.69592 -91.22951 MISSISSIPPI R. NEAR FORT MADISON 2 SEPTIC TANK SAND FILTER 30 5 0.0028 0.0028 3050901 0059765 8/31/2026 IOWA GREAT LAKES SANITARY DISTRICT STP 3 6 98 36 43.34151 -95.13703 LITTLE SIOUX R. 2 ACTIVATED SLUDGE 74210 12393 2.22 5.17 WW IV 7455000 0081183 9/30/2025 IOWA LAKES REGIONAL WATER OSGOOD PLANT 3 27 97 33 43.18849 -94.73197 DES MOINES R. ABOVE THE EAST FORK DES MOINES 1 OTHER 0.66 0.567 7727805 0052438 1/31/2026 IOWA LUTHERAN HOSPITAL 5 3 78 24 41.60022 -93.60942 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 NO TREATMENT 7727806 0052446 1/31/2026 IOWA METHODIST MEDICAL CENTER 5 4 78 24 41.58879 -93.63353 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 NO TREATMENT 8670101 0000795 12/31/2019 IOWA PREMIUM, LLC 5 36 83 15 41.95562 -92.54538 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 2 ACTIVATED SLUDGE 177605 29660 1.486 1.486 0900106 0079693 10/31/2022 IOWA REGIONAL UTILITIES ASSOCIATION 1 9 91 14 42.71468 -92.50827 SHELLROCK R. 1 OTHER 8503004 0078174 1/31/2024 IOWA STATE UNIVERSITY MS4 5 4 83 24 42.02915 -93.64065 SKUNK R. ABOVE THE NORTH SKUNK 1 NO TREATMENT 8503100 0032697 5/31/2023 IOWA STATE UNIVERSITY POWER PLANT 5 3 83 24 42.02746 -93.63971 SKUNK R. ABOVE THE NORTH SKUNK 1 OTHER 2900101 0001783 4/30/2020 IPL - BURLINGTON GENERATING STATION 6 29 69 02 40.74213 -91.12329 FLINT R. 1 SEPTIC TANK SAND FILTER 12 2 0.001 0.0025 0300100 0003735 5/31/2021 IPL - LANSING GENERATING STATION 1 2 98 03 43.33632 -91.16688 YELLOW R. AND PAINT CR. 1 OTHER 9000101 0060909 4/30/2023 IPL - OTTUMWA GENERATING STATION 6 26 73 15 41.09689 -92.55389 DES MOINES R. BELOW WHITEBREAST CR. 1 PRIMARY TREATMENT 5715108 0000540 10/31/2021 IPL - PRAIRIE CREEK GENERATING STATION 1 3 82 07 41.94511 -91.63803 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 OTHER 8447001 0027961 9/30/2023 IRETON CITY OF STP 3 12 94 47 42.97461 -96.35134 BIG SIOUX R. BELOW THE ROCK 2 WASTE STABILIZATION LAGOON 662 110.5 0.04 0.058 WL IL 8340001 0021024 10/31/2021 IRWIN CITY OF STP 4 36 80 38 41.77752 -95.22638 WEST NISHNABOTNA R. 1 WASTE STABILIZATION LAGOON 988 165 0.0533 0.065 WL IL 0800108 0082732 8/31/2025 ISU BIOCENTURY RESEARCH FARM - LAOP 5 8 84 25 42.01922 -93.77805 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 LAND APPLICATION 1556301 0078476 2/29/2024 J. W. Freund Farms, Inc. 4 10 75 37 41.31465 -95.09642 EAST NISHNABOTNA R. 1 OTHER 1456478 0080292 4/30/2022 James Pudenz Inc 4 13 85 35 42.16831 -94.87797 MIDDLE AND SOUTH RACCOON R.S 1 OTHER 0732001 0026506 12/31/2021 JANESVILLE CITY OF STP 1 3 90 14 42.63532 -92.47966 CEDAR R. ABOVE THE SHELLROCK R. 2 AERATED LAGOON 1599 267 0.1 0.136 WL IL 5000706 0076848 2/28/2025 JASPER COUNTY REGIONAL WASTEWATER SYSTEM 5 33 80 17 41.70258 -92.84163 NORTH SKUNK R. 1 WASTE STABILIZATION LAGOON 1129 188.5 0.1 0.111 WL IL 4000701 0079898 1/31/2025 JAY BROS INC. 2 33 89 23 42.47122 -93.56446 SKUNK R. ABOVE THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 62 10 0.0039 0.0039 9083101 0060569 10/31/2021 JBS PORK 6 31 72 13 41.00331 -92.39382 DES MOINES R. BELOW WHITEBREAST CR. 1 OXIDATION DITCH 205089 34250 2.3 3 1556742 0080306 8/31/2021 JDH, Inc. Feedlot 4 35 74 36 41.16575 -94.96058 NODAWAY R. 1 OTHER 9778151 0079944 12/31/2025 JEBRO, INCORPORATED 3 19 88 48 42.43145 -96.38221 MISSOURI R. FROM SIOUX CITY TO THE LITTLE SIOUX 1 NO TREATMENT 6056976 0082091 1/31/2025 JEFF GROENEWEG FEEDLOT 3 21 98 47 43.30037 -96.39485 ROCK R. 1 OTHER 3742001 0021300 10/31/2025 JEFFERSON CITY OF STP 4 18 83 30 42.00743 -94.38294 NORTH RACCOON R. 1 ACTIVATED SLUDGE 8982 1500 0.69 2.45 WW III 1044002 0075302 5/31/2024 JESUP, CITY OF STP (SOUTH) 1 7 88 10 42.4519 -92.05652 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 2 AERATED LAGOON 4970 830 0.32 2.25 WL IL 4027001 0024422 12/31/2022 JEWELL CITY OF STP 2 34 87 24 42.30124 -93.63305 SKUNK R. ABOVE THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 2054 343 0.133 0.175 WL IL 8461290 0077879 9/30/2025 JGM Feedlot LLC 3 15 95 45 43.04576 -96.13601 FLOYD R. 1 OTHER 8222107 0059501 12/31/2025 JOHN DEERE DAVENPORT WORKS 6 36 79 03 41.60757 -90.55124 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 1 OTHER 3126107 0000051 8/31/2019 JOHN DEERE DUBUQUE WORKS 1 35 90 02 42.56591 -90.69351 LITTLE MAQUOKETA R. 1 ACTIVATED SLUDGE 3593 600 0.2 0.2 0790107 0059439 6/30/2021 JOHN DEERE ENGINE WORKS 1 1 88 14 42.46816 -92.43321 CEDAR R. ABOVE THE SHELLROCK R. 1 NO TREATMENT 0790116 0069485 11/30/2023 JOHN DEERE FOUNDRY WATERLOO 1 22 89 13 42.50741 -92.36659 CEDAR R. ABOVE THE SHELLROCK R. 1 NO TREATMENT 6 0790102 0062481 5/31/2024 JOHN DEERE PRODUCT ENGINEERING CENTER 1 31 89 13 42.47607 -92.41628 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 OTHER 0790103 0000060 11/30/2023 JOHN DEERE WATERLOO WORKS 1 23 89 13 42.50304 -92.35298 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 NO TREATMENT 6056833 0079685 7/31/2021 John Fluit Jr., Beef Open Feedlot 3 16 98 47 43.30185 -96.40418 ROCK R. 1 OTHER 9433000 0078441 4/30/2020 JOHN W. PRAY WATER FACILITY 2 19 89 28 42.50797 -94.20391 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 OTHER 7740002 0078212 4/30/2024 JOHNSTON, CITY OF MS4 5 6 79 25 41.67396 -93.69763 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 NO TREATMENT 9835001 0052077 8/31/2020 JOICE, CITY OF STP 2 33 99 22 43.35254 -93.44293 WINNEBAGO R. 1 WASTE STABILIZATION LAGOON 269 45 0.0214 0.0234 WL IL 6066585 0053042 6/30/2024 Jon Van Ginkel Feedlot 3 33 98 47 ROCK R. 1 LAND APPLICATION 1456269 0081337 6/30/2023 JOSH PUDENZ 4 20 85 34 42.16507 -94.82491 MIDDLE AND SOUTH RACCOON R.S 1 OTHER 6059150 0084131 8/31/2023 JRT Focus Farms Ltd, Site 1 3 16 099 46 43.39039 -96.27634 BIG SIOUX R. ABOVE THE ROCK 1 OTHER 8460404 0077577 10/31/2021 K & D Feedyards, LLC 3 36 96 46 43.0794 -96.17988 BIG SIOUX R. BELOW THE ROCK 1 OTHER 7000113 0052387 10/31/2025 K.A. STEEL CHEMICALS D/B/A OLIN CHLOR ALKALI PRODUCTS & VINYLS 6 22 76 02 41.37115 -91.07538 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 1 LAND APPLICATION 9233001 0059196 1/31/2019 KALONA CITY OF STP 6 18 77 07 41.47334 -91.71417 IOWA R. BELOW NORTH LIBERTY 1 WASTE STABILIZATION LAGOON 2988 499 0.251 0.812 WL IL 5200116 0052476 6/30/2021 KALONA CREAMERY, LLC 6 19 78 07 41.5423 -91.71182 IOWA R. BELOW NORTH LIBERTY 2 AERATED LAGOON 2958 494 0.036 0.031 4033001 0069124 1/31/2023 KAMRAR CITY OF STP 2 35 88 25 42.39076 -93.72536 SKUNK R. ABOVE THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 251 42 0.024 0.0245 WL IL 4150001 0026000 4/30/2026 KANAWHA CITY OF STP 2 28 94 25 42.93447 -93.80195 BOONE R. 1 WASTE STABILIZATION LAGOON 1347 225 0.1 0.185 WL IL 8463595 0080438 7/31/2022 Kekerix Kattle Co. 3 21 97 47 43.21393 -96.4045 ROCK R. 1 OTHER 7561752 0080179 4/30/2022 Kellen Feedlot 3 10 91 45 42.71265 -96.13635 FLOYD R. 1 OTHER 8040001 0061760 7/31/2021 KELLERTON CITY OF STP 4 11 68 28 40.70839 -94.04361 GRAND R. 1 WASTE STABILIZATION LAGOON 407 68 0.034 WL IL 5038001 0043541 5/31/2025 KELLOGG CITY OF STP 5 25 80 18 41.70559 -92.90077 NORTH SKUNK R. 1 WASTE STABILIZATION LAGOON 934 156 0.1 WL IL 4566247 0083062 7/31/2025 Kenneth Moellers - Hayek Farm 1 25 99 11 43.35885 -92.09264 TURKEY R. 1 OTHER 9840001 0076635 8/31/2016 KENSETT, CITY OF-STP 2 33 99 20 43.35308 -93.20084 SHELLROCK R. 1 WASTE STABILIZATION LAGOON 305 51 0.03 0.03 WL IL 5625110 0077143 7/31/2020 KENSINGTON FORT MADISON, LLC 6 5 67 04 40.62996 -91.33693 MISSISSIPPI R. NEAR FORT MADISON 1 NO TREATMENT 5640001 0042609 8/31/2023 KEOKUK CITY OF STP 6 36 65 05 40.3867 -91.39401 MISSISSIPPI R. NEAR FORT MADISON 1 ACTIVATED SLUDGE 71257 11900 3.43 5 WW IV 6245001 0062073 10/31/2024 KEOMAH VILLAGE CITY OF STP 5 13 75 15 41.29579 -92.53498 SKUNK R. ABOVE THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 222 37 0.028 WL IL 8938001 0023361 4/30/2025 KEOSAUQUA CITY OF STP 6 36 69 10 40.73007 -91.95238 DES MOINES R. BELOW WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 1293 216 0.137 0.18 WL IL 5440001 0035998 11/30/2023 KEOTA CITY OF STP 6 25 76 10 41.35665 -91.95497 SKUNK R. BELOW THE NORTH SKUNK 2 ADVANCED AERATED LAGOON 1102 184 0.102 0.608 WL II 0398103 0080870 5/31/2022 KERNDT BROTHERS SAVINGS BANK 1 6 97 05 43.25473 -91.47287 YELLOW R. AND PAINT CR. 1 NO TREATMENT 5442001 0079910 5/31/2022 KESWICK, CITY OF STP 6 22 77 12 41.46579 -92.23925 IOWA R. BELOW NORTH LIBERTY 1 WASTE STABILIZATION LAGOON 301 50.2 0.0295 WL IL 3126201 0084255 11/30/2025 KEY CITY PLATING 1 18 89 03 42.52609 -90.65011 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 NO TREATMENT 0640001 0025984 3/31/2024 KEYSTONE CITY OF STP 1 13 83 12 41.99571 -92.19075 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 3 ADVANCED AERATED LAGOON 1084 181 0.078 0.428 WL II 5715112 0002437 5/31/2022 KILBORN, INC. 1 11 83 07 42.00632 -91.63452 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 NO TREATMENT 0543001 0025372 12/31/2022 KIMBALLTON CITY OF STP 4 30 79 36 41.62298 -95.0792 EAST NISHNABOTNA R. 1 AERATED LAGOON 994 166 0.05 0.05 WL IL 5715119 0069523 12/2/2024 KING'S MATERIAL, INC.-WASHOUT FACILITY - LAOP 1 10 82 07 41.92887 -91.65324 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 NO TREATMENT 7537001 0023400 5/31/2024 KINGSLEY CITY OF STP 3 25 90 44 42.58827 -95.97892 WEST FORK LITTLE SIOUX R. 2 ADVANCED AERATED LAGOON 1569 262 0.131 0.3 WL II 5444001 0077186 7/31/2022 KINROSS, CITY OF STP (RUSS) 6 22 77 10 41.45378 -91.98517 IOWA R. BELOW NORTH LIBERTY 1 WASTE STABILIZATION LAGOON 90 15 0.0089 0.0067 WL IL 4800104 0076881 4/30/2022 KINZE MANUFACTURING, INC. 6 31 80 10 41.69259 -92.06586 IOWA R. BELOW NORTH LIBERTY 1 WASTE STABILIZATION LAGOON 168 28 0.0112 8466255 0083151 5/31/2026 Kirk Den Herder Feedlot 3 23 95 45 43.04088 -96.12178 FLOYD R. 1 OTHER 9069001 0074667 3/31/2022 KIRKVILLE, CITY OF 6 8 73 14 41.13354 -92.50293 DES MOINES R. BELOW WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 180 30 0.017 WL IL 2432001 0020818 8/31/2024 KIRON CITY OF STP 4 12 85 39 42.19019 -95.33321 BOYER R. 2 ADVANCED AERATED LAGOON 359 60 0.028 0.098 WL II 4155001 0038466 8/31/2022 KLEMME CITY OF STP 2 31 95 23 43.00238 -93.60644 IOWA R. ABOVE ALBION 2 AERATED LAGOON 521 87 0.077 0.64 WL IL 3100602 0071811 9/30/2022 KNAPP MOBILE HOME PARK-STP 1 2 89 02 42.55686 -90.68464 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 TRICKLING FILTER 126 21 0.0063 0.0063 1340000 0084379 10/31/2022 KNIERIM, CITY OF WTP 3 10 88 31 42.4488 -94.45576 NORTH RACCOON R. 1 OTHER 6342001 0035866 7/31/2025 KNOXVILLE CITY OF STP 5 5 75 19 41.32499 -93.07815 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 TRICKLING FILTER 17719 2959 1.355 3.07 WW III 9400121 0053000 7/31/2024 KOCH FERTILIZER FORT DODGE NITROGEN PLANT - LAOP 2 1 86 27 42.49984 -94.01565 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 LAND APPLICATION 9400100 0000302 7/31/2024 KOCH FERTILIZER FT. DODGE, LLC 2 27 89 27 42.50101 -94.01674 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 ACTIVATED SLUDGE 156 26 0.01 0.01 6400112 0075591 9/5/2005 KOCH NITROGEN COMPANY, LLC 5 16 84 17 42.09198 -92.83226 IOWA R. ABOVE ALBION 1 NO TREATMENT 8466384 0083852 5/31/2023 Kooima Custom Feed 3 32 97 46 43.18423 -96.3133 ROCK R. 1 OTHER 7048102 0001741 5/31/2025 KRAFTHEINZ COMPANY, L.P. 6 26 77 02 41.43637 -91.0428 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 1 NO TREATMENT 7900714 0067458 4/30/2026 KWIK STAR #303 5 34 80 13 41.69177 -92.35782 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 AERATED LAGOON 425 71 0.012 0.012 4945001 0056707 12/31/2025 LA MOTTE CITY OF STP 1 4 86 03 42.29236 -90.62185 MAQUOKETA R. 1 WASTE STABILIZATION LAGOON 335 56 0.033 0.06 WL IL 0743001 0035963 1/31/2022 LA PORTE CITY, CITY OF STP 1 25 87 12 42.31735 -92.18881 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 SEQUENCING BATCH REACTOR 3593 600 0.26 0.566 WW III

47 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Region Section Town Range Latitude Longitude FAC DES BASIN Design Treatment Type PE Design BOD ADW Flow AWW Opcert Opcert Number Flow Type Grade 9138001 0022021 6/30/2016 LACONA CITY OF STP 5 27 74 22 41.18495 -93.38281 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 550 92 0.081 WL IL 4840001 0058521 8/31/2023 LADORA CITY OF STP 6 7 80 11 41.75178 -92.18197 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 AERATED LAGOON 359 60 0.035 0.201 WL IL 1345003 0020842 7/31/2023 LAKE CITY CITY OF STP 3 12 86 34 42.27134 -94.75601 NORTH RACCOON R. 1 WASTE STABILIZATION LAGOON 2509 419 0.231 0.3 WL IL 9900900 0066401 7/31/2022 LAKE CORNELIA SANITARY DISTRICT 2 17 92 24 42.78966 -93.69497 BOONE R. 1 WASTE STABILIZATION LAGOON 475 79 0.0403 WL IL 9200403 0080853 1/31/2024 LAKE DARLING YOUTH CENTER CAMP 6 21 74 09 41.19722 -91.8919 SKUNK R. BELOW THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 33 6 0.0112 0.0112 9545001 0027448 2/28/2022 LAKE MILLS CITY OF STP 2 3 99 23 43.41698 -93.54126 WINNEBAGO R. 1 AERATED LAGOON 17964 3000 0.501 0.75 WL I 3900800 0084212 12/31/2022 LAKE PANORAMA ASSOCIATION WTP 4 26 80 31 41.71062 -94.41769 MIDDLE AND SOUTH RACCOON R.S 1 OTHER 3045001 0036919 12/31/2022 LAKE PARK CITY OF STP 3 27 100 38 43.44931 -95.31882 LITTLE SIOUX R. 1 AERATED LAGOON 1461 244 0.125 0.282 WL IL 6300907 0083402 5/31/2016 LAKE RED ROCK - WHITEBREAST SEWAGE LAGOON 5 15 76 19 41.3799 -93.02767 DES MOINES R. BELOW WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 114 19 0.0091 5200316 0074284 10/31/2024 LAKE RIDGE, INC.- STP 6 21 79 06 41.62833 -91.54694 IOWA R. BELOW NORTH LIBERTY 1 ACTIVATED SLUDGE 1461 244 0.08 0.13 8127001 0041998 4/30/2026 LAKE VIEW CITY OF STP 3 28 87 36 42.31297 -95.05233 NORTH RACCOON R. 2 ADVANCED AERATED LAGOON 1952 326 0.23 0.46 WL II 3087102 0053299 2/17/2023 LAKESIDE AVE. INFRASTRUCTURE IMPROVEMENTS 3 26 99 37 43.37446 -95.17377 LITTLE SIOUX R. 1 NO TREATMENT 8200605 0064718 5/31/2026 LAKESIDE MANOR MOBILE HOME COMMUNITY 6 1 77 02 41.50225 -90.67971 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 2 ADVANCED AERATED LAGOON 360 60.2 0.017 0.037 8461089 0077704 3/31/2023 Laketon Cattle Company (Formerly Performance Beef) 3 14 95 44 43.05535 -96.0001 FLOYD R. 1 OTHER 5200304 0061514 8/1/2006 LAKEVIEW KNOLLS 6 15 80 06 41.73388 -91.52562 IOWA R. BELOW NORTH LIBERTY 1 ACTIVATED SLUDGE 359 60 0.04 0.0424 8200602 0067695 3/31/2022 LAKEWOOD ESTATES MOBILE HOME PARK 6 12 78 02 41.57541 -90.67332 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 2 WASTE STABILIZATION LAGOON 509 85 0.101 5200327 0081426 3/31/2026 LAKEWOODS DEVELOPMENT SUB./BOWERSOX ADDITION SUB. 6 10 81 07 41.83636 -91.63852 CEDAR R. BELOW CEDAR RAPIDS 1 AERATED LAGOON 581 97 0.0353 0.0441 5540001 0078697 10/31/2023 LAKOTA CITY OF STP 2 24 99 28 43.37926 -94.10517 BLUE EARTH R. 1 WASTE STABILIZATION LAGOON 263 44 0.026 WL IL 2740001 0036102 8/31/2022 LAMONI CITY OF STP 5 11 67 27 40.61112 -93.93083 GRAND R. 1 SEQUENCING BATCH REACTOR 2263 378 0.231 0.893 WW III 1051001 0025348 7/31/2022 LAMONT CITY OF STP 1 23 90 07 42.59698 -91.6317 MAQUOKETA R. 1 WASTE STABILIZATION LAGOON 515 86 0.089 WL IL 8465430 0053261 11/30/2025 Lance Rus 3 11 97 47 43.24257 -96.36893 ROCK R. 1 OTHER 1449001 0062162 11/30/2021 LANESBORO CITY OF STP 4 16 85 33 42.18083 -94.69125 NORTH RACCOON R. 1 WASTE STABILIZATION LAGOON 249 42 0.0245 WL IL 0345001 0024597 3/31/2022 LANSING CITY OF STP 1 33 99 03 43.34926 -91.20694 YELLOW R. AND PAINT CR. 2 ACTIVATED SLUDGE 1447 241.6 0.224 0.407 WW II 6000112 0052919 1/31/2024 LARCHWOOD 1447 LLC 3 33 100 48 43.44235 -96.49711 BIG SIOUX R. ABOVE THE ROCK 1 WASTE STABILIZATION LAGOON 461 77 0.039 0.039 6050001 0047333 4/30/2022 LARCHWOOD CITY OF STP 3 25 100 48 43.45202 -96.44707 BIG SIOUX R. ABOVE THE ROCK 1 WASTE STABILIZATION LAGOON 916 153 0.135 WL IL 1833001 0024589 11/30/2015 LARRABEE CITY OF STP 3 22 93 40 42.85695 -95.54892 LITTLE SIOUX R. 1 WASTE STABILIZATION LAGOON 177 30 0.007 0.016 WL IL 9756513 0082619 3/31/2025 Larry Guthridge Combined Operation 3 4 89 44 42.54826 -96.04608 WEST FORK LITTLE SIOUX R. 1 OTHER 3554001 0062944 9/30/2016 LATIMER-COULTER CITY OF STP 2 19 92 21 42.7709 -93.36033 WEST FORK CEDAR R. 1 WASTE STABILIZATION LAGOON 862 144 0.0644 0.0789 WL IL 6452001 0072214 8/31/2024 LAUREL, CITY OF STP 5 26 82 18 41.89005 -92.91233 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 AERATED LAGOON 754 126 0.072 0.073 WL IL 7614001 0025950 8/31/2026 LAURENS CITY OF STP 3 27 93 34 42.8356 -94.84508 NORTH RACCOON R. 1 WASTE STABILIZATION LAGOON 3886 649 0.19 0.7 WL IL 7614000 0082473 12/31/2024 LAURENS, CITY OF WTP 3 27 93 34 42.84898 -94.85117 NORTH RACCOON R. 1 OTHER 0556260 0080080 12/31/2021 Lauritsen Cattle Company 4 8 78 35 41.57473 -94.89539 EAST NISHNABOTNA R. 1 OTHER 1957001 0056910 8/31/2016 LAWLER CITY OF STP 1 4 95 11 43.07198 -92.14589 TURKEY R. 2 WASTE STABILIZATION LAGOON 509 85 0.18 WL IL 9743001 0043168 4/30/2024 LAWTON CITY OF STP 3 32 89 45 42.48244 -96.18773 WEST FORK LITTLE SIOUX R. 1 WASTE STABILIZATION LAGOON 699 116 0.067 0.0725 WL IL 7540001 0036536 11/30/2023 LE MARS CITY OF STP 3 8 92 45 42.79959 -96.17762 FLOYD R. 3 ACTIVATED SLUDGE 114970 19200 3.14 3.59 WW IV 8245002 0022012 7/31/2023 LECLAIRE CITY OF STP 6 3 78 05 41.59015 -90.36726 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 1 SEQUENCING BATCH REACTOR 11509 1922 1 1.54 WW III 8245003 0078824 11/30/2024 LECLAIRE, CITY OF MS4 6 35 79 05 41.6011 -90.34678 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 1 NO TREATMENT 8657001 0027235 9/30/2025 LEGRAND CITY OF STP 5 7 83 16 42.00673 -92.7607 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 2 WASTE STABILIZATION LAGOON 1695 283 0.11 0.19 WL IL 1750113 0072907 8/31/2024 LEHIGH CEMENT COMPANY LLC 2 32 97 20 43.17703 -93.21313 WINNEBAGO R. 1 OTHER 1700100 0001945 9/17/2005 LEHIGH CEMENT COMPANY LLC 2 32 97 20 43.17703 -93.21313 WINNEBAGO R. 1 ACTIVATED SLUDGE 38 6.3 0.006 0.006 9453001 0021296 3/31/2016 LEHIGH CITY OF STP 2 18 87 27 42.35191 -94.04627 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 WASTE STABILIZATION LAGOON 874 146 0.072 WL IL 6259001 0080501 7/31/2024 LEIGHTON, CITY OF STP 5 35 76 17 41.33706 -92.78879 DES MOINES R. BELOW WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 204 34 0.0138 0.018 WL IL 4900401 0079766 9/30/2021 LEISURE LAKE, COMMUNITY OF 1 29 86 02 42.23101 -90.76001 MAQUOKETA R. 1 WASTE STABILIZATION LAGOON 422 70.4 0.0301 WL IL 9549001 0036528 12/31/2022 LELAND CITY OF STP 2 1 98 24 43.33177 -93.62699 WINNEBAGO R. 1 WASTE STABILIZATION LAGOON 305 51 0.0165 0.0335 WL IL 8748001 0027995 7/31/2025 LENOX CITY OF STP 4 7 70 32 40.87609 -94.57379 HUNDRED AND TWO 2 ADVANCED AERATED LAGOON 2084 348 0.152 0.624 WL II 2742001 0027871 10/31/2024 LEON CITY OF STP 5 33 69 25 40.72731 -93.74355 THOMPSON R. 2 SEQUENCING BATCH REACTOR 3263 545 0.34 0.98 WW III 2742000 0081787 6/30/2018 LEON WATER TREATMENT PLANT 5 30 69 25 40.74657 -93.77161 GRAND R. 1 OTHER 8459032 0083895 11/30/2023 Les Ranschau - Ranschau Enterprises 3 11 96 47 43.1431 -96.35676 ROCK R. 1 OTHER 6055001 0026620 2/28/2017 LESTER CITY OF STP 3 1 99 47 43.42701 -96.33048 ROCK R. 2 WASTE STABILIZATION LAGOON 305 51 0.024 0.0335 WL IL 5847001 0061492 4/30/2016 LETTS CITY OF STP 6 6 75 03 41.32794 -91.24383 IOWA R. BELOW NORTH LIBERTY 1 WASTE STABILIZATION LAGOON 551 92 0.0918 WL IL 1535001 0057487 5/31/2020 LEWIS CITY OF STP 4 10 75 37 41.31463 -95.08368 EAST NISHNABOTNA R. 1 WASTE STABILIZATION LAGOON 671 112 0.061 WL IL 9144301 0080152 5/31/2023 LIBERTY CENTER CITY OF (WARREN CO. BOARD OF SUPERVISORS) 5 15 74 23 41.20601 -93.49539 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 229 38 0.0144 WL IL 5148001 0062821 6/30/2016 LIBERTYVILLE CITY OF STP 6 17 71 10 40.95327 -92.04487 DES MOINES R. BELOW WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 437 73 0.043 WL IL 1453001 0056855 12/31/2022 LIDDERDALE CITY OF STP 4 34 85 34 42.12938 -94.78904 MIDDLE AND SOUTH RACCOON R.S 1 WASTE STABILIZATION LAGOON 359 60 0.027 WL IL 2000300 0068403 11/30/2022 LIFT, L.L.C. 5 27 73 25 41.09751 -93.73094 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 50 8.35 0.005 4500802 0052031 4/30/2020 LIME SPRINGS BEEF, LLC (NOW UPPER IOWA BEEF, LLC) 1 29 100 12 43.4484 -92.29648 UPPER IOWA R. 1 ACTIVATED SLUDGE 7533 1258 0.044 0.044 4535001 0043494 9/30/2023 LIME SPRINGS CITY OF STP 1 28 100 12 43.451 -92.27328 UPPER IOWA R. 1 AERATED LAGOON 644 107.5 0.057 0.28 WL IL 8562100 0079375 9/30/2024 LINCOLNWAY ENERGY, LLC 5 3 83 23 42.02344 -93.51171 SKUNK R. ABOVE THE NORTH SKUNK 1 OTHER 3944001 0081973 5/31/2023 LINDEN CITY OF STP 4 24 79 30 41.64221 -94.2885 MIDDLE AND SOUTH RACCOON R.S 1 WASTE STABILIZATION LAGOON 275 46 0.027 WL IL 9352001 0071897 11/30/2017 LINEVILLE CITY OF STP 5 28 67 23 40.58049 -93.51075 THOMPSON R. 1 WASTE STABILIZATION LAGOON 350 59 0.0344 WL IL 1147001 0042897 4/30/2022 LINN GROVE CITY OF STP 3 6 93 37 42.89676 -95.25 LITTLE SIOUX R. 1 WASTE STABILIZATION LAGOON 315 52.6 0.0297 0.0307 WL IL 9200601 0068560 12/13/2012 LINN HOLLOW MOBILE HOME PARK 6 29 75 07 41.27301 -91.69112 SKUNK R. BELOW THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 102 17 0.005 5748001 0025909 4/30/2025 LISBON CITY OF STP 1 14 82 05 41.91683 -91.39312 CEDAR R. BELOW CEDAR RAPIDS 2 ACTIVATED SLUDGE 3725 622 0.31 0.4 WW III 6462001 0056847 7/31/2022 LISCOMB CITY OF STP 5 12 85 19 42.18544 -93.01491 IOWA R. ABOVE ALBION 1 WASTE STABILIZATION LAGOON 356 60 0.035 WL IL 6060001 0025356 12/31/2021 LITTLE ROCK CITY OF STP 3 35 100 43 43.44534 -95.89375 ROCK R. 1 WASTE STABILIZATION LAGOON 527 88 0.043 0.056 WL IL 1800112 0077275 4/30/2025 LITTLE SIOUX CORN PROCESSORS, LLC 3 2 92 42 42.82051 -95.76008 LITTLE SIOUX R. 1 OTHER 4333001 0080276 4/30/2019 LITTLE SIOUX/RIVER SIOUX STP 4 24 81 45 41.81083 -96.03666 LITTLE SIOUX R. 1 WASTE STABILIZATION LAGOON 378 63 0.037 WL IL 4647001 0023566 4/30/2023 LIVERMORE CITY OF STP 2 17 93 28 42.87746 -94.17923 EAST FORK DES MOINES R. 1 WASTE STABILIZATION LAGOON 719 120 0.11 WL IL 5157001 0072729 8/31/2018 LOCKRIDGE CITY OF STP 6 2 71 08 40.98778 -91.74199 SKUNK R. BELOW THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 302 50 0.029 0.029 WL IL 4337001 0058599 7/12/2006 LOGAN CITY OF STP 4 19 79 42 41.64317 -95.77555 BOYER R. 1 WASTE STABILIZATION LAGOON 2114 353 0.198 0.248 WL IL 1389002 0084280 7/31/2023 LOHRVILLE, CITY OF STP 3 14 86 32 42.26436 -94.53817 NORTH RACCOON R. 2 WASTE STABILIZATION LAGOON 335 56 0.053 WL IL 5547001 0082341 2/28/2025 LONE ROCK, CITY OF STP 2 18 97 29 43.22492 -94.31529 EAST FORK DES MOINES R. 1 WASTE STABILIZATION LAGOON 156 26 0.0155 0.0175 WL IL 5240001 0060330 4/30/2020 LONE TREE CITY OF STP (SOUTH) 6 16 77 05 41.47826 -91.43763 IOWA R. BELOW NORTH LIBERTY 2 ACTIVATED SLUDGE 2156 360 0.176 0.822 WW III 8251001 0022292 7/31/2022 LONG GROVE CITY OF STP 6 34 80 03 41.69659 -90.59272 WAPSIPINICON R. BELOW ANAMOSA 2 ACTIVATED SLUDGE 1455 243 0.1467 0.2303 WW II 5200323 0080730 4/30/2024 LONGVIEW ESTATES HOA 6 27 81 07 41.80264 -91.64269 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 OTHER 144 24 0.014 0.014 3126503 0081833 3/31/2024 LORAS COLLEGE 1 23 89 02 42.50348 -90.68182 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 NO TREATMENT 3100601 0063983 6/30/2018 LORE MOBILE HOME PARK STP 1 13 89 01 42.52215 -90.79616 LITTLE MAQUOKETA R. 2 WASTE STABILIZATION LAGOON 66 11 0.0047 0.0067 8834001 0062910 9/30/2020 LORIMOR CITY OF STP 4 14 73 28 41.12384 -94.05073 THOMPSON R. 1 WASTE STABILIZATION LAGOON 611 102 0.0607 WL IL 3100608 0063827 7/30/2007 LOST CANYON MOBILE HOME PARK 1 7 88 02 42.45028 -90.77806 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 TRICKLING FILTER 150 25 0.015 0.015 2346001 0036544 5/31/2022 LOST NATION CITY OF STP 6 35 83 01 41.95116 -90.81947 WAPSIPINICON R. BELOW ANAMOSA 1 WASTE STABILIZATION LAGOON 838 140 0.0817 WL IL 3700105 0082066 4/30/2024 LOUIS DREYFUS COMPANY, GRAND JUNCTION, LLC 4 28 84 29 42.0603 -94.23831 NORTH RACCOON R. 1 NO TREATMENT 5800901 0066117 6/24/2006 LOUISA CO. LAW ENFORCEMENT CENTER 6 11 74 03 41.23107 -91.16906 IOWA R. BELOW NORTH LIBERTY 1 WASTE STABILIZATION LAGOON 60 10 0.006 2500904 0079669 10/31/2024 LOUISE P. MOON ASR FACILITY 5 25 79 26 41.61796 -93.83338 NORTH RACCOON R. 1 OTHER 7720201 0068438 3/31/2024 LOVE'S TRAVEL SHOP 411 5 32 79 25 41.61472 -93.7818 NORTH RACCOON R. 1 OTHER 6858001 0027430 7/31/2023 LOVILIA CITY OF STP 5 11 73 18 41.14111 -92.90028 DES MOINES R. BELOW WHITEBREAST CR. 1 AERATED LAGOON 653 109 0.064 0.182 WL IL 1656001 0047899 4/30/2022 LOWDEN CITY OF STP 6 2 81 01 41.85336 -90.91947 WAPSIPINICON R. BELOW ANAMOSA 1 TRICKLING FILTER 736 123 0.12 0.38 WW II 5551001 0082571 2/28/2023 LU VERNE, CITY OF STP 2 32 94 27 42.91565 -94.06802 EAST FORK DES MOINES R. 1 WASTE STABILIZATION LAGOON 305 51 0.0299 0.0339 WL IL 2254001 0027685 7/31/2021 LUANA CITY OF STP 1 9 95 05 43.06531 -91.44885 YELLOW R. AND PAINT CR. 1 WASTE STABILIZATION LAGOON 389 65 0.0314 WL IL 5915001 0072621 8/31/2022 LUCAS CITY OF STP (RATHBUN REGIONAL WATER ASSOCIATION) 5 24 72 23 41.02706 -93.45794 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 228 38 0.018 0.024 WL IL

48 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Region Section Town Range Latitude Longitude FAC DES BASIN Design Treatment Type PE Design BOD ADW Flow AWW Opcert Opcert Number Flow Type Grade 3158001 0074781 11/30/2024 LUXEMBURG, CITY OF-STP 1 21 90 02 42.59758 -91.07441 MAQUOKETA R. 1 WASTE STABILIZATION LAGOON 331 55.3 0.0254 0.0317 WL IL 7861300 0077691 2/28/2023 LV Feedlot, LLC 4 36 75 39 41.25823 -95.2748 WEST NISHNABOTNA R. 1 OTHER 6200904 0074659 3/31/2022 LYNNDANA SEWER DISTRICT 5 1 75 16 41.33219 -92.64947 SKUNK R. ABOVE THE NORTH SKUNK 1 PRIMARY TREATMENT 51 9 0.0046 0.0051 5047001 0041971 11/30/2018 LYNNVILLE CITY OF STP 5 12 78 17 41.57418 -92.77629 NORTH SKUNK R. 1 WASTE STABILIZATION LAGOON 419 70 0.041 WL IL 8400700 0080535 6/14/2014 LYON & SIOUX RWS BOYDEN SUBSYTEM WTP 3 13 97 44 43.22947 -96.00023 ROCK R. 1 OTHER 8133001 0020940 4/30/2022 LYTTON CITY OF STP 3 21 88 35 42.42302 -94.82067 NORTH RACCOON R. 1 WASTE STABILIZATION LAGOON 1317 220 0.158 0.1748 WL IL 4100105 0004791 3/31/2026 M.G. WALDBAUM COMPANY - LAOP 2 25 96 25 43.10432 -93.74275 IOWA R. ABOVE ALBION 1 WASTE STABILIZATION LAGOON 7100 1136 0.15 0.15 8457177 0082449 5/31/2025 Maassen & Sons Combined Facility 3 15 94 45 42.96585 -96.13631 FLOYD R. 1 OTHER 5200906 0073580 4/30/2022 MACBRIDE SANITARY SEWER DISTRICT 6 22 81 06 41.81472 -91.53637 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 AERATED LAGOON 519 86.7 0.0408 0.051 WL IL 7841001 0042919 8/31/2021 MACEDONIA CITY OF STP 4 27 74 40 41.18434 -95.43231 WEST NISHNABOTNA R. 1 WASTE STABILIZATION LAGOON 331 55 0.0418 WL IL 6134001 0079928 8/31/2024 MACKSBURG, CITY OF STP 5 9 74 29 41.21847 -94.19502 THOMPSON R. 1 WASTE STABILIZATION LAGOON 163 27 0.016 WL IL 0848001 0028207 8/31/2026 MADRID CITY OF STP 5 35 82 26 41.87022 -93.83598 DES MOINES R. BELOW THE EAST FORK DES MOINES 2 ACTIVATED SLUDGE 5174 864 0.449 0.99 WW III 7727126 0064076 3/31/2016 MAGELLAN PIPELINE COMPANY, L.P. 5 17 78 23 41.55833 -93.525 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 OTHER 0000115 0076775 7/17/2022 MAGELLAN PIPELINE COMPANY, L.P. - BLANKET PERMIT 5 17 78 23 41.56121 -93.52673 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 NO TREATMENT 1700122 0074411 1/16/2007 MAGELLAN PIPELINE COMPANY, LP 2 17 96 21 43.13989 -93.35339 WINNEBAGO R. 1 OTHER 5159001 0078417 11/22/2009 MAHARISHI VEDIC CITY 6 8 72 10 41.04761 -92.02977 SKUNK R. BELOW THE NORTH SKUNK 1 SEPTIC TANK SAND FILTER 509 85 0.05 0.05 WW W 5100302 0072699 7/22/2003 Maharishi Vedic City - South 6 8 72 10 41.04761 -92.02977 SKUNK R. BELOW THE NORTH SKUNK 1 SEQUENCING BATCH REACTOR 299 50 0.02 0.02 WW II 5200306 0073733 10/31/2025 MAKADA SUBDIVISION-STP 6 26 79 06 41.62188 -91.50935 IOWA R. BELOW NORTH LIBERTY 1 WASTE STABILIZATION LAGOON 105 17 0.009 0.0103 7945001 0048011 5/31/2025 MALCOM CITY OF STP 5 25 80 15 41.70451 -92.55192 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 2 WASTE STABILIZATION LAGOON 478 80 0.0352 0.0396 WL IL 7450001 0023370 12/31/2020 MALLARD CITY OF STP 3 30 94 32 42.93653 -94.67274 DES MOINES R. ABOVE THE EAST FORK DES MOINES 1 WASTE STABILIZATION LAGOON 539 90 0.048 0.0544 WL IL 6545001 0058572 12/31/2024 MALVERN CITY OF STP 4 31 72 41 40.99421 -95.59991 WEST NISHNABOTNA R. 1 WASTE STABILIZATION LAGOON 1449 242 0.238 0.365 WL IL 2839001 0021032 6/30/2026 MANCHESTER CITY OF STP 1 33 89 05 42.47461 -91.44993 MAQUOKETA R. 3 ACTIVATED SLUDGE 15000 2505 0.424 0.986 WW III 3621100 0063568 9/30/2025 MANILDRA MILLING CORPORATION 4 28 67 42 40.59771 -95.66569 NISHNABOTNA R. 1 ACTIVATED SLUDGE 11497 1920 0.301 0.602 2436001 0047368 7/31/2023 MANILLA CITY OF STP 4 26 82 38 41.88139 -95.24252 WEST NISHNABOTNA R. 1 WASTE STABILIZATION LAGOON 946 158 0.07 0.0928 WL IL 9845001 0047830 6/30/2025 MANLY CITY OF STP 2 27 98 20 43.28392 -93.18729 SHELLROCK R. 1 WASTE STABILIZATION LAGOON 1647 275 0.197 WL IL 1457001 0023337 8/31/2022 MANNING CITY OF STP 4 20 82 36 41.9049 -95.06538 WEST NISHNABOTNA R. 1 TRICKLING FILTER 2713 453 0.19 0.4 WW II 1351001 0027189 6/30/2024 MANSON CITY OF STP 3 20 89 31 42.50971 -94.52127 NORTH RACCOON R. 1 WASTE STABILIZATION LAGOON 1934 323 0.19 0.442 WL IL 1351000 0082651 2/28/2025 MANSON, CITY OF WTP 3 17 89 31 42.53003 -94.53333 NORTH RACCOON R. 1 NO TREATMENT 1461001 0081639 7/31/2026 MAPLE RIVER JUNCTION STP 4 9 84 35 42.09938 -94.93338 MIDDLE AND SOUTH RACCOON R.S 1 TRICKLING FILTER 114 19 0.006 0.0113 WW II 6727001 0021288 9/30/2022 MAPLETON CITY OF STP 4 24 85 43 42.16283 -95.80094 MAPLE R. 1 ACTIVATED SLUDGE 1198 200 0.1 0.3 WW II 7000601 0066338 3/31/2018 MAPLEWOOD ESTATES 6 3 77 01 41.5039 -90.95001 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 1 AERATED LAGOON 329 55 0.0162 0.0163 4950001 0024481 5/31/2025 MAQUOKETA CITY OF STP 1 18 84 03 42.07759 -90.66475 MAQUOKETA R. 1 ACTIVATED SLUDGE 14970 2500 1.03 1.3 WW III 1150001 0067652 9/30/2025 MARATHON CITY OF STP 3 20 93 35 42.85561 -95.01196 NORTH RACCOON R. 1 SEPTIC TANK SAND FILTER 461 77 0.042 0.042 WW W 3420001 0057207 4/30/2025 MARBLE ROCK CITY OF STP 2 16 94 17 42.95684 -92.86717 SHELLROCK R. 1 WASTE STABILIZATION LAGOON 614 103 0.06 WL IL 1838001 0036111 1/31/2025 MARCUS CITY OF STP 3 5 93 42 42.82085 -95.83081 WEST FORK LITTLE SIOUX R. 1 WASTE STABILIZATION LAGOON 778 130 0.135 0.235 WL IL 4843001 0047937 6/30/2026 MARENGO CITY OF STP 6 30 81 10 41.79654 -92.05308 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 AERATED LAGOON 2898 484 0.242 0.549 WL IL 8456936 0079472 2/28/2023 Marion Rus Feedlot 3 35 97 47 43.173 -96.35325 ROCK R. 1 OTHER 5751002 0078689 8/31/2025 MARION, CITY OF MS4 1 5 83 06 42.02814 -91.57382 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 NO TREATMENT 9756759 0080098 11/30/2021 Mark Baldwin Feedlot 3 16 87 43 42.3489 -95.85487 WEST FORK LITTLE SIOUX R. 1 OTHER 7556898 0080446 11/30/2023 Mark Beitelspacher Feedlot 3 15 93 46 42.86554 -96.26697 FLOYD R. 1 OTHER 2256001 0059463 4/30/2022 MARQUETTE CITY OF STP 1 16 95 03 43.04442 -91.19206 YELLOW R. AND PAINT CR. 1 ACTIVATED SLUDGE 1904 445 0.126 0.156 WW III 8459758 0083810 7/31/2022 Mars Farms, Inc. 3 14 95 44 43.05215 -96.01234 FLOYD R. 1 OTHER 6400901 0075973 6/30/2020 MARSHALL COUNTY LAW CENTER 5 10 83 19 42.0116 -93.0584 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 2 WASTE STABILIZATION LAGOON 347 58 0.0217 6469001 0038610 4/30/2021 MARSHALLTOWN CITY OF WATER POLLUTION CONTROL 5 24 84 18 42.06681 -92.89852 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 SEQUENCING BATCH REACTOR 144174 24077 6.4 13.04 WW IV 6469000 0075345 12/31/2023 MARSHALLTOWN WATER TREATMENT PLANT 5 22 84 18 42.06505 -92.92314 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 PRIMARY TREATMENT 6469002 0080039 7/31/2026 MARSHALLTOWN, CITY OF MS4 5 24 84 18 42.06681 -92.89852 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 NO TREATMENT 5737001 0062987 12/31/2022 MARTELLE CITY OF STP 1 12 83 05 42.01996 -91.37257 CEDAR R. BELOW CEDAR RAPIDS 1 WASTE STABILIZATION LAGOON 509 85 0.08 WL IL 9147001 0031836 9/30/2026 MARTENSDALE CITY OF STP 5 21 76 25 41.37433 -93.73413 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 509 85 0.08 WL IL 5452001 0078727 9/30/2026 MARTINSBURG, CITY OF STP 6 33 74 12 41.17303 -92.25682 SKUNK R. BELOW THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 138 23 0.0135 WL IL 1750001 0057169 7/31/2026 MASON CITY, CITY OF STP 2 13 96 20 43.13806 -93.15646 WINNEBAGO R. 2 ACTIVATED SLUDGE 169072 28235 6.8 14.9 WW IV 1750000 0077305 2/29/2024 MASON CITY, CITY OF WTP 2 3 96 20 43.16348 -93.19702 WINNEBAGO R. 1 OTHER 2843001 0077241 2/29/2024 MASONVILLE, CITY OF-STP 1 32 89 06 42.48029 -91.58375 MAQUOKETA R. 1 WASTE STABILIZATION LAGOON 153 26 0.011 0.015 WL IL 1558001 0048348 10/31/2021 MASSENA CITY OF STP 4 32 75 34 41.25167 -94.79123 NODAWAY R. 1 AERATED LAGOON 617 103 0.037 0.213 WL IL 2900110 0075035 12/31/2021 MATTESON MARINE SERVICE, INC. 6 4 69 02 40.80053 -91.09871 FLINT R. 1 OTHER 8458001 0023451 1/31/2022 MAURICE CITY OF STP 3 17 94 45 42.96758 -96.18837 FLOYD R. 1 WASTE STABILIZATION LAGOON 365 61 0.0128 0.0346 WL IL 8557001 0041793 5/31/2026 MAXWELL CITY OF STP 5 27 82 22 41.88808 -93.38881 SKUNK R. ABOVE THE NORTH SKUNK 2 ADVANCED AERATED LAGOON 1497 250 0.16 0.45 WL II 3350001 0025976 4/30/2024 MAYNARD CITY OF STP 1 10 92 09 42.79347 -91.88763 TURKEY R. 1 WASTE STABILIZATION LAGOON 629 105 0.054 0.081 WL IL 8552001 0051934 10/31/2017 MCCALLSBURG CITY OF STP 5 22 85 22 42.16417 -93.39477 SKUNK R. ABOVE THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 377 63 0.0468 WL IL 8258001 0057185 10/31/2024 MCCAUSLAND CITY OF STP 6 12 80 04 41.74923 -90.44331 WAPSIPINICON R. BELOW ANAMOSA 1 WASTE STABILIZATION LAGOON 431 72 0.0424 WL IL 2561103 0066982 8/31/2024 MCCREARY COMMUNITY BUILDING MUN. SWIMMING POOL 5 10 81 28 41.84147 -94.09552 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 NO TREATMENT 2258001 0028614 4/30/2022 MCGREGOR CITY OF STP 1 26 95 03 43.01631 -91.16932 YELLOW R. AND PAINT CR. 1 SEQUENCING BATCH REACTOR 1629 272 0.086 0.15 WW II 8462015 0077844 10/31/2021 Meadowvale Dairy - North Site 3 18 97 47 43.21796 -96.4392 ROCK R. 1 OTHER 8461393 0077852 12/5/2017 Meadowvale Dairy - South 3 19 97 47 43.20228 -96.44725 ROCK R. 1 OTHER 1667001 0022314 11/30/2021 MECHANICSVILLE CITY OF STP 6 18 82 03 41.90976 -91.24418 WAPSIPINICON R. BELOW ANAMOSA 1 AERATED LAGOON 1335 223 0.161 0.43 WL IL 2948001 0025917 2/29/2024 MEDIAPOLIS CITY OF STP 6 25 72 03 41.00787 -91.15055 FLINT R. 1 AERATED LAGOON 2371 396 0.2 0.34 WL IL 6471001 0036552 5/31/2026 MELBOURNE CITY OF STP 5 1 82 20 41.93747 -93.11636 NORTH SKUNK R. 2 AERATED LAGOON 1587 265 0.167 0.627 WL IL 6352001 0047783 10/31/2022 MELCHER-DALLAS CITY OF STP 5 12 74 21 41.23124 -93.22823 DES MOINES R. BELOW WHITEBREAST CR. 1 AERATED LAGOON 1737 290 0.2 1.059 WL IL 6868001 0076902 7/31/2016 MELROSE CITY OF STP (RATHBUN REGIONAL WATER ASSN) 5 3 71 19 40.97555 -93.035 DES MOINES R. BELOW WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 153 26 0.015 WL IL 7234001 0083658 12/31/2022 MELVIN CITY OF STP 3 20 98 40 43.29342 -95.58648 LITTLE SIOUX R. 1 WASTE STABILIZATION LAGOON 295 49.3 0.029 WL IL 3956001 0071374 7/31/2021 MENLO CITY OF STP 4 34 78 31 41.51803 -94.40508 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 485 81 0.029 0.0455 WL IL 7727801 0081477 11/30/2024 MERCYONE DES MOINES MEDICAL CENTER 5 4 78 24 41.5989 -93.62332 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 NO TREATMENT 1849001 0020753 7/31/2019 MERIDEN CITY OF STP 3 12 92 41 42.80209 -95.63153 LITTLE SIOUX R. 1 WASTE STABILIZATION LAGOON 275 46 0.0255 0.0255 WL IL 7548001 0024538 1/31/2020 MERRILL CITY OF STP 3 11 91 46 42.72122 -96.2382 FLOYD R. 1 WASTE STABILIZATION LAGOON 816 136 0.0657 0.0825 WL IL 1754001 0076724 8/31/2021 MESERVEY, CITY OF-STP 2 32 94 22 42.91212 -93.45902 WEST FORK CEDAR R. 1 WASTE STABILIZATION LAGOON 287 48 0.028 0.028 WL IL 8748102 0075647 5/31/2022 MICHAEL FOODS, INC. 4 8 70 32 40.8748 -94.5654 HUNDRED AND TWO 1 ACTIVATED SLUDGE 44910 7500 0.25 0.25 9700102 0004103 11/30/2022 MIDAMERICAN ENERGY - NEAL NORTH ENERGY CENTER 3 25 87 48 42.32218 -96.37433 MISSOURI R. FROM SIOUX CITY TO THE LITTLE SIOUX 1 OTHER 9700106 0061859 8/31/2022 MIDAMERICAN ENERGY - NEAL SOUTH ENERGY CTR 3 31 87 47 42.30112 -96.35985 MISSOURI R. FROM SIOUX CITY TO THE LITTLE SIOUX 1 OTHER 8278101 0003611 12/14/2021 MIDAMERICAN ENERGY CO - RIVERSIDE STATION 6 24 78 04 41.5403 -90.44835 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 1 OTHER 71 12 0.0022 5800105 0063282 3/31/2025 MIDAMERICAN ENERGY CO. - LOUISA STATION 6 9 75 02 41.3091 -91.09225 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 2 OTHER 2952001 0025381 4/30/2021 MIDDLETOWN CITY OF STP 6 25 70 04 40.83153 -91.26134 FLINT R. 1 AERATED LAGOON 587 98 0.057 0.367 WL IL 4953001 0028606 8/31/2022 MILES CITY OF STP 1 36 84 05 42.04612 -90.31762 MISSISSIPPI R. NEAR SABULA 1 ACTIVATED SLUDGE 677 113 0.045 0.053 WW II 3050000 0081299 12/31/2023 MILFORD WATER TREATMENT PLANT 3 7 98 36 43.32678 -95.14645 LITTLE SIOUX R. 1 NO TREATMENT 4852001 0077283 11/30/2017 MILLERSBURG CITY OF (POWESHIEK WATER ASSN) 6 8 78 11 41.57433 -92.1542 IOWA R. BELOW NORTH LIBERTY 1 WASTE STABILIZATION LAGOON 192 32 0.0188 WL IL 9155001 0030511 5/31/2024 MILO CITY OF STP 5 24 75 23 41.28253 -93.44653 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 AERATED LAGOON 1437 240 0.11 0.19 WL IL 8954001 0058751 11/30/2017 MILTON CITY OF STP 6 29 68 11 40.65871 -92.15233 FOX AND WYACONDA R.S 1 WASTE STABILIZATION LAGOON 599 100 0.0821 WL IL 2547001 0023418 3/31/2022 MINBURN CITY OF STP 5 7 80 27 41.75513 -94.04447 NORTH RACCOON R. 1 WASTE STABILIZATION LAGOON 407 68 0.048 WL IL 7849001 0048330 6/30/2026 MINDEN CITY OF STP 4 22 77 41 41.46096 -95.53648 KEG AND WAUBONSIE CR.S 2 WASTE STABILIZATION LAGOON 689 115 0.112 0.123 WL IL 6549001 0082082 7/31/2019 MINEOLA CITY OF STP 4 9 73 42 41.14577 -95.68602 KEG AND WAUBONSIE CR.S 1 WASTE STABILIZATION LAGOON 195 32.5 0.015 0.019 WL IL 5052001 0022276 12/31/2025 MINGO CITY OF STP 5 3 80 21 41.76722 -93.27474 SKUNK R. ABOVE THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 509 85 0.043 WL IL

49 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Region Section Town Range Latitude Longitude FAC DES BASIN Design Treatment Type PE Design BOD ADW Flow AWW Opcert Opcert Number Flow Type Grade 3100203 0052589 8/31/2021 MIRACLE CAR WASH 1 25 89 02 42.49603 -90.66617 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 NO TREATMENT 0500103 0078166 6/30/2021 MISSOURI RIVER ENERGY SERVICES-EXIRA STATION 4 31 78 35 41.51407 -94.9126 EAST NISHNABOTNA R. 1 OTHER 4344001 0026654 2/13/2012 MISSOURI VALLEY CITY OF STP 4 22 78 44 41.54657 -95.89831 BOYER R. 1 WASTE STABILIZATION LAGOON 4401 735 0.4326 WL IL 4344000 0080454 4/30/2024 MISSOURI VALLEY CITY OF WTP 4 16 78 44 41.56056 -95.90249 BOYER R. 1 OTHER 7751001 0021997 2/28/2022 MITCHELLVILLE CITY OF STP 5 11 79 22 41.6696 -93.36808 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 2 SEQUENCING BATCH REACTOR 6006 1003 0.387 1.69 WW III 9756524 0079294 7/31/2025 MJ Cattle Company 3 8 86 45 42.28086 -96.09878 WEST FORK LITTLE SIOUX R. 1 OTHER 4347001 0081051 6/30/2019 MODALE, CITY OF STP 4 29 79 44 41.62455 -95.99613 ALLEN CR. 1 WASTE STABILIZATION LAGOON 335 56 0.0325 WL IL 5200605 0064874 8/31/2023 MODERN MANOR MOBILE HOME COURT 6 19 79 05 41.63489 -91.47301 IOWA R. BELOW NORTH LIBERTY 1 ACTIVATED SLUDGE 719 120 0.075 0.1 4349001 0023507 6/30/2007 MONDAMIN CITY OF STP 4 30 80 44 41.71069 -96.00176 SOLDIER R. 1 AERATED LAGOON 635 106 0.048 0.766 WL IL 2264001 0036927 12/31/2021 MONONA CITY OF STP 1 14 95 05 43.04492 -91.39787 TURKEY R. 1 ACTIVATED SLUDGE 2179 364 0.1341 0.312 WW III 5054001 0041947 8/31/2025 MONROE CITY OF STP (EAST) 5 30 78 19 41.52352 -93.09328 SKUNK R. ABOVE THE NORTH SKUNK 2 ADVANCED AERATED LAGOON 2323 388 0.148 0.554 WL II 7950001 0036935 8/31/2026 MONTEZUMA CITY OF STP 5 12 78 15 41.57799 -92.52752 NORTH SKUNK R. 2 ADVANCED AERATED LAGOON 5389 900 0.3 1.25 WL II 7950000 0084310 7/31/2024 Montezuma, City of WTP 5 2 78 15 41.58323 -92.54972 NORTH SKUNK R. 1 OTHER 5343001 0026034 9/30/2021 MONTICELLO CITY OF STP 1 22 86 03 42.24125 -91.17338 MAQUOKETA R. 1 TRICKLING FILTER 6467 1080 0.54 1.14 WW III 8666001 0058700 11/30/2025 MONTOUR CITY OF STP 5 22 83 16 41.98612 -92.70578 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 AERATED LAGOON 377 63 0.044 0.083 WL IL 7038901 0073890 4/30/2022 MONTPELIER SANITARY DISTRICT, VILLAGE OF 6 24 77 01 41.46056 -90.80389 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 1 AERATED LAGOON 898 150 0.0882 0.0882 WL IL 5650001 0030848 12/31/2025 MONTROSE CITY OF STP 6 11 66 05 40.53143 -91.41357 MISSISSIPPI R. NEAR FORT MADISON 1 ACTIVATED SLUDGE 1018 170 0.1 WW II 6731001 0062995 6/30/2023 MOORHEAD CITY OF STP 4 16 82 43 41.91819 -95.85066 SOLDIER R. 1 WASTE STABILIZATION LAGOON 407 68 0.038 WL IL 7864122 0083321 4/30/2026 Moran Beef #2 4 17 76 42 41.37784 -95.69489 PIGEON AND MOSQUITO CR.S 1 OTHER 7856509 0079537 4/30/2026 Moran Beef, Inc. 4 18 76 43 41.42068 -95.79925 PIGEON AND MOSQUITO CR.S 1 OTHER 0467001 0056693 4/30/2025 MORAVIA CITY OF STP 5 9 70 17 40.88207 -92.81267 DES MOINES R. BELOW WHITEBREAST CR. 1 AERATED LAGOON 856 143 0.08 0.204 WL IL 5857001 0059587 6/30/2023 MORNING SUN CITY OF STP 6 25 73 04 41.10093 -91.26812 IOWA R. BELOW NORTH LIBERTY 1 AERATED LAGOON 1733 289.4 0.151 0.452 WL IL 6056614 0083828 7/31/2022 Moser Feedlot 3 12 99 47 43.40756 -96.34467 ROCK R. 1 OTHER 0472001 0020851 10/31/2025 MOULTON CITY OF STP 5 14 68 16 40.68926 -92.66963 FOX AND WYACONDA R.S 1 WASTE STABILIZATION LAGOON 677 113 0.067 0.17 WL IL 0650001 0059153 8/31/2020 MOUNT AUBURN CITY OF STP 1 23 86 11 42.2533 -92.0868 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 2 WASTE STABILIZATION LAGOON 189 31.5 0.0185 WL IL 8055001 0023574 1/31/2024 MOUNT AYR CITY OF STP 4 7 68 29 40.70529 -94.24289 GRAND R. 1 SEQUENCING BATCH REACTOR 7192 1201 0.39 0.78 WW III 4453002 0070009 8/31/2023 MOUNT PLEASANT CITY OF STP (EAST) 6 34 72 06 40.99334 -91.52774 SKUNK R. BELOW THE NORTH SKUNK 1 AERATED LAGOON 3563 595 0.35 0.7 WL IL 4453001 0047970 5/31/2024 MOUNT PLEASANT CITY OF STP (MAIN) 6 29 71 06 40.91597 -91.56896 SKUNK R. BELOW THE NORTH SKUNK 1 SEQUENCING BATCH REACTOR 14671 2450 1.35 2.75 WW III 8958001 0076651 4/30/2022 MOUNT STERLING, CITY OF STP 6 7 67 09 40.61706 -91.93062 FOX AND WYACONDA R.S 1 SEPTIC TANK SAND FILTER 54 9 0.0039 0.0053 WW W 4455001 0082881 7/31/2022 MOUNT UNION CITY OF (RUSS) 6 2 72 05 41.06241 -91.39023 SKUNK R. BELOW THE NORTH SKUNK 1 TRICKLING FILTER 153 26 0.015 0.015 WW II 5758001 0023710 6/30/2025 MOUNT VERNON CITY OF STP 1 15 82 05 41.91595 -91.40946 CEDAR R. BELOW CEDAR RAPIDS 1 ACTIVATED SLUDGE 10299 1720 0.656 1.436 WW III 9753001 0042943 10/31/2024 MOVILLE CITY OF STP 3 3 88 45 42.47225 -96.07492 WEST FORK LITTLE SIOUX R. 1 AERATED LAGOON 2246 375 0.31 0.37 WL IL 8222603 0068012 3/31/2024 MT. JOY MOBILE HOME PARK 6 25 79 03 41.61745 -90.55964 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 1 ACTIVATED SLUDGE 169 28.2 0.0094 0.0094 5500106 0073784 7/31/2025 MURPHY FARMS, LLC 2 4 95 29 43.07048 -94.28391 EAST FORK DES MOINES R. 1 NO TREATMENT 2032001 0063304 12/31/2023 MURRAY CITY OF STP 5 15 72 27 41.03408 -93.93744 THOMPSON R. 1 WASTE STABILIZATION LAGOON 865 144.5 0.075 0.084 WL IL 7048001 0023434 3/31/2025 MUSCATINE CITY OF STP 6 10 76 02 41.40713 -91.07207 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 1 ACTIVATED SLUDGE 128743 21500 5.15 10.3 WW IV 7000109 0082708 1/18/2015 MUSCATINE POWER & WATER CCR LANDFILL 6 16 76 03 41.37874 -91.21349 CEDAR R. BELOW CEDAR RAPIDS 1 NO TREATMENT 7048106 0001082 2/28/2018 MUSCATINE POWER AND WATER 6 14 76 02 41.39026 -91.05758 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 1 OTHER 8456553 0084263 10/31/2023 Myron Gradert Feedlot 3 36 95 47 42.99771 -96.34717 BIG SIOUX R. BELOW THE ROCK 1 LAND APPLICATION 0477001 0071064 12/31/2015 MYSTIC CITY OF STP 5 16 69 18 40.76895 -92.93007 CHARITON R. 1 WASTE STABILIZATION LAGOON 725 121 0.071 WL IL 1967001 0024503 9/30/2022 NASHUA CITY OF STP 1 20 94 14 42.94546 -92.53506 CEDAR R. ABOVE THE SHELLROCK R. 2 ACTIVATED SLUDGE 2114 353 0.122 0.23 WW III 3126801 0080331 6/30/2025 NATIONAL MISSISSIPPI RIVER MUSEUM AND AQUARIUM 1 30 89 03 42.49694 -90.66084 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 NO TREATMENT 5800107 0058262 2/28/2018 NATURAL GAS PIPELINE CO OF AMERICA #204 6 5 74 04 41.23615 -91.35019 IOWA R. BELOW NORTH LIBERTY 1 OTHER 5800109 0081701 7/31/2026 NATURAL GAS PIPELINE COMPANY OF AMERICA - SWD #1 WELL 6 5 74 04 41.23417 -91.34859 IOWA R. BELOW NORTH LIBERTY 1 NO TREATMENT 5800108 0075485 7/31/2026 NATURAL GAS PIPELINE COMPANY OF AMERICA - A. GRIFFIN M-1 WELL 6 5 74 04 41.23417 -91.34859 IOWA R. BELOW NORTH LIBERTY 1 NO TREATMENT 0709801 0080047 1/31/2019 NAZARETH LUTHERAN CHURCH 1 24 89 14 42.51194 -92.44722 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 NO TREATMENT 7853001 0021041 10/31/2023 NEOLA CITY OF STP 4 25 77 42 41.4457 -95.61887 PIGEON AND MOSQUITO CR.S 2 ACTIVATED SLUDGE 1269 212 0.074 0.112 WW II 9433109 0064866 10/31/2021 NESTLE PURINA PETCARE 2 21 89 28 42.50139 -94.16639 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 NO TREATMENT 8562001 0031704 10/31/2021 NEVADA CITY OF STP 5 18 83 22 42.00664 -93.45061 SKUNK R. ABOVE THE NORTH SKUNK 1 TRICKLING FILTER 29168 4871 1.658 3.71 WW III 0370001 0026611 6/30/2022 NEW ALBIN CITY OF STP 1 2 100 04 43.50049 -91.28145 YELLOW R. AND PAINT CR. 1 TRICKLING FILTER 1437 240 0.105 0.123 WW II 3500204 0052983 9/30/2023 NEW COOPERATIVE, INC. 2 31 92 22 42.745 -93.49637 IOWA R. ABOVE ALBION 1 NO TREATMENT 1970001 0028525 5/31/2024 NEW HAMPTON CITY OF STP 1 18 95 12 43.04746 -92.31405 WAPSIPINICON R. ABOVE ANAMOSA 1 TRICKLING FILTER 73653 12300 1.32 2.2 WW IV 1271001 0056880 4/30/2023 NEW HARTFORD CITY OF STP 2 27 90 15 42.57755 -92.6133 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 AERATED LAGOON 1563 261 0.11 0.21 WL IL 9800114 0052535 2/14/2021 NEW HEAVEN CHEMICALS IOWA LLC - SMO MANUFACTURING PLANT 2 16 98 20 43.30789 -93.20644 SHELLROCK R. 1 OTHER 8264001 0075221 9/30/2022 NEW LIBERTY, CITY OF-STP 6 20 80 01 41.71351 -90.86964 WAPSIPINICON R. BELOW ANAMOSA 1 WASTE STABILIZATION LAGOON 215 36 0.021 0.021 WL IL 4458001 0025941 10/31/2021 NEW LONDON CITY OF STP 6 26 71 05 40.91812 -91.40878 SKUNK R. BELOW THE NORTH SKUNK 2 ADVANCED AERATED LAGOON 2240 374 0.244 0.885 WL II 8758001 0033049 5/31/2015 NEW MARKET CITY OF STP 4 33 69 35 40.7302 -94.89006 HUNDRED AND TWO 1 WASTE STABILIZATION LAGOON 599 100 0.06 0.08 WL IL 4271001 0028193 5/31/2018 NEW PROVIDENCE CITY OF STP 2 10 86 20 42.26903 -93.16685 IOWA R. ABOVE ALBION 1 WASTE STABILIZATION LAGOON 251 42 0.0249 WL IL 6264001 0032417 6/30/2025 NEW SHARON CITY OF STP 5 24 77 16 41.45664 -92.6565 NORTH SKUNK R. 2 ADVANCED AERATED LAGOON 1317 220 0.175 0.681 WL II 3165001 0027391 9/30/2016 NEW VIENNA CITY OF STP 1 6 89 02 42.54607 -91.1155 MAQUOKETA R. 2 AERATED LAGOON 437 73 0.034 0.084 WL IL 9159901 0058891 8/31/2023 NEW VIRGINIA SANITARY DISTRICT-STP 5 33 74 25 41.17393 -93.73829 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 AERATED LAGOON 898 150 0.0682 0.198 WL IL 1155001 0021989 6/30/2021 NEWELL, CITY OF STP 3 20 90 35 42.60014 -94.99414 NORTH RACCOON R. 2 WASTE STABILIZATION LAGOON 1180 197 0.146 0.255 WL IL 0653001 0043664 9/30/2022 NEWHALL CITY OF STP 1 14 83 10 41.9954 -91.97638 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 2 ADVANCED AERATED LAGOON 1126 188 0.083 0.619 WL II 5059002 0027723 7/31/2025 NEWTON CITY OF STP 5 3 79 19 41.68102 -93.04882 SKUNK R. ABOVE THE NORTH SKUNK 1 ACTIVATED SLUDGE 35808 5980 2.937 9.202 WW IV 5700104 0003727 2/28/2021 NEXTERA ENERGY DUANE ARNOLD, LLC 1 9 84 08 42.10204 -91.77692 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 SEQUENCING BATCH REACTOR 560 93 0.054 0.054 7052001 0036561 3/31/2022 NICHOLS CITY OF STP 6 15 77 04 41.47647 -91.30215 CEDAR R. BELOW CEDAR RAPIDS 1 WASTE STABILIZATION LAGOON 551 92 0.045 WL IL 0260001 0040231 5/31/2026 NODAWAY CITY OF (SIRWA) 4 20 71 35 40.94063 -94.90086 EAST NODAWAY R. 1 WASTE STABILIZATION LAGOON 234 39 0.0209 0.0209 WL IL 3423001 0032778 6/30/2025 NORA SPRINGS CITY OF STP 2 17 96 18 43.13953 -93.00041 SHELLROCK R. 2 ACTIVATED SLUDGE 2760 461 0.182 0.599 WW III 6058902 0084093 12/31/2023 Norm Cleveringa Feedlot 3 33 98 46 43.2658 -96.29431 ROCK R. 1 LAND APPLICATION 4858001 0034282 9/30/2021 NORTH ENGLISH CITY OF STP 6 31 78 10 41.51721 -92.06038 IOWA R. BELOW NORTH LIBERTY 1 TRICKLING FILTER 1101 184 0.054 0.242 WW II 5252001 0032905 10/31/2025 NORTH LIBERTY CITY OF STP 6 19 80 06 41.72539 -91.59255 IOWA R. BELOW NORTH LIBERTY 2 SEQUENCING BATCH REACTOR 28323 4730 2.93 4.429 WW IV 5252003 0078794 8/31/2024 NORTH LIBERTY, CITY OF MS4 6 12 80 07 41.75211 -91.60773 IOWA R. BELOW NORTH LIBERTY 1 NO TREATMENT 7705500 0063321 3/31/2022 NORTH POLK COMMUNITY SCHOOL DISTRICT 5 23 81 24 41.81635 -93.6176 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 2 SEPTIC TANK SAND FILTER 479 80 0.016 0.016 7856255 0077666 1/31/2025 North Ridge Feedlot (Formerly Rolling B Farms) 4 17 76 41 41.38971 -95.58994 WEST NISHNABOTNA R. 1 OTHER 5500501 0078115 10/31/2021 NORTH UNION COMMUNITY SCHOOL DISTRICT 2 18 97 30 43.21247 -94.4259 EAST FORK DES MOINES R. 1 SEPTIC TANK SAND FILTER 83 13.8 0.0055 0.0055 3100611 0066290 11/30/2025 NORTHEND MOBILE HOME PARK 1 2 89 02 42.55197 -90.69263 LITTLE MAQUOKETA R. 1 TRICKLING FILTER 93 16 0.015 0.015 2500122 0077038 2/28/2022 NORTHERN NATURAL GAS - UNDERGROUND INJECTION WELL 5 6 79 28 41.65916 -94.14527 MIDDLE AND SOUTH RACCOON R.S 1 OTHER 7800100 0004391 6/30/2024 NORTHERN NATURAL GAS CO. OAKLAND STATION 4 11 75 39 41.31742 -95.29873 WEST NISHNABOTNA R. 1 PRIMARY TREATMENT 0800101 0046957 10/31/2023 NORTHERN NATURAL GAS CO. OGDEN STATION 5 31 84 27 42.04708 -94.04539 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 NO TREATMENT 2500103 0000299 9/30/2025 NORTHERN NATURAL GAS CO. REDFIELD STATION 5 7 79 28 41.6632 -94.16043 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 AERATED LAGOON 10449 1745 4100100 0064327 7/31/2025 NORTHERN NATURAL GAS CO. VENTURA STATION 2 1 96 23 43.15611 -93.51274 IOWA R. ABOVE ALBION 1 OTHER 4100115 0052829 3/13/2024 NORTHERN NATURAL GAS CO., GARNER - LAOP 2 26 96 23 43.09981 -93.52294 IOWA R. ABOVE ALBION 1 OTHER 9855001 0032395 4/30/2023 NORTHWOOD CITY OF STP 2 4 99 20 43.42949 -93.21851 SHELLROCK R. 2 ACTIVATED SLUDGE 7114 1188 0.378 0.829 WW III 9164002 0078913 12/31/2024 NORWALK, CITY OF MS4 5 14 77 25 41.47576 -93.69455 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 NO TREATMENT 0656001 0036943 6/30/2025 NORWAY CITY OF STP 1 21 82 09 41.90315 -91.9089 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 2 TRICKLING FILTER 1650 275.58 0.0724 0.2728 WW II 7820106 0046752 10/31/2024 NUSTAR COUNCIL BLUFFS TERMINAL 4 18 74 43 41.21755 -95.83271 PIGEON AND MOSQUITO CR.S 1 OTHER 7856376 0080144 8/31/2026 NVF Co, LLC 4 36 75 40 41.24674 -95.39205 WEST NISHNABOTNA R. 1 OTHER 6056581 0053137 9/30/2024 NW Iowa Feeders LLP 3 26 100 45 43.44802 -96.11716 ROCK R. 1 OTHER 2900301 0075469 1/31/2026 OAK HILLS SUBDIVISION-STP 6 13 69 03 40.77517 -91.16044 FLINT R. 1 ACTIVATED SLUDGE 600 100 0.059 0.059

50 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Region Section Town Range Latitude Longitude FAC DES BASIN Design Treatment Type PE Design BOD ADW Flow AWW Opcert Opcert Number Flow Type Grade 5500300 0065242 9/30/2020 OAK LAKE MAINTENANCE, INC. 2 20 96 28 43.12528 -94.18278 EAST FORK DES MOINES R. 1 AERATED LAGOON 144 24 0.014 0.015 7856001 0033448 9/30/2024 OAKLAND CITY OF STP 4 11 75 40 41.31058 -95.41278 WEST NISHNABOTNA R. 1 WASTE STABILIZATION LAGOON 1826 305 0.02 0.15 WL IL 7856000 0081523 11/30/2019 OAKLAND CITY OF WTP 4 12 75 40 41.31112 -95.39662 WEST NISHNABOTNA R. 1 PRIMARY TREATMENT 0.0057 0.0057 5868001 0073601 9/30/2022 OAKVILLE CITY OF STP 6 24 73 02 41.10596 -91.03958 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 1 WASTE STABILIZATION LAGOON 449 75 0.0375 0.0442 WL IL 7239001 0035068 10/31/2017 OCHEYEDAN CITY OF STP 3 14 99 40 43.40171 -95.53916 LITTLE SIOUX R. 1 WASTE STABILIZATION LAGOON 593 99 0.0561 0.0836 WL IL 7100700 0052702 12/31/2023 OCRWS SOUTH WATER TREATMENT PLANT 3 28 94 39 42.93837 -95.44887 LITTLE SIOUX R. 1 OTHER 8144001 0032506 6/30/2022 ODEBOLT CITY OF STP 3 28 87 38 42.31676 -95.2837 MAPLE R. 2 WASTE STABILIZATION LAGOON 1030 172 0.147 0.306 WL IL 3353001 0032344 5/31/2026 OELWEIN CITY OF STP 1 29 91 09 42.67031 -91.926 WAPSIPINICON R. ABOVE ANAMOSA 1 SEQUENCING BATCH REACTOR 16431 2744 1.07 2.66 WW IV 0858001 0041904 8/31/2025 OGDEN CITY OF STP 5 31 84 27 42.03817 -94.04094 DES MOINES R. BELOW THE EAST FORK DES MOINES 3 ACTIVATED SLUDGE 2287 382 0.247 1.218 WW III 7565053 0080802 2/28/2023 Ohlendorf Feeders 3 25 92 43 42.74986 -95.87673 FLOYD R. 1 OTHER 4465001 0074560 6/30/2025 OLDS MUNICIPAL UTILITIES 6 15 73 06 41.13443 -91.53829 SKUNK R. BELOW THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 210 35 0.0205 WL IL 5355001 0036064 8/31/2021 OLIN CITY OF STP 1 13 83 03 41.99891 -91.13752 WAPSIPINICON R. BELOW ANAMOSA 2 WASTE STABILIZATION LAGOON 946 158 0.175 WL IL 5460001 0083801 2/29/2020 OLLIE, CITY OF STP 6 23 74 11 41.19322 -92.08675 SKUNK R. BELOW THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 228 38.1 0.0168 0.0224 WL IL 3056332 0077534 4/30/2025 Olson Farm, Inc 3 31 98 35 43.25685 -95.02476 LITTLE SIOUX R. 1 OTHER 6739001 0036145 4/27/2008 ONAWA CITY OF STP 4 9 83 45 42.0163 -96.0882 WEST FORK LITTLE SIOUX R. 1 TRICKLING FILTER 3233 540 0.268 0.568 WW II 5358001 0057134 10/31/2022 ONSLOW CITY OF STP 1 7 84 01 42.10452 -91.00644 MAQUOKETA R. 1 WASTE STABILIZATION LAGOON 479 80 0.0346 WL IL 0900902 0070751 4/30/2016 ORAN COMMUNITY SANITATION DISTRICT 1 13 91 11 42.69738 -92.09249 WAPSIPINICON R. ABOVE ANAMOSA 1 WASTE STABILIZATION LAGOON 305 51 0.021 WL IL 8474001 0032751 1/26/2009 ORANGE CITY CITY OF STP 3 31 94 44 42.99766 -96.08171 FLOYD R. 1 AERATED LAGOON 14431 2410 1.075 1.9 WL I 8474000 0077496 12/16/2013 ORANGE CITY, CITY OF WTP 3 5 94 44 42.99639 -96.065 FLOYD R. 1 OTHER 6658001 0064271 4/30/2017 ORCHARD CITY OF STP 2 18 97 16 43.22237 -92.77405 CEDAR R. ABOVE THE SHELLROCK R. 1 WASTE STABILIZATION LAGOON 102 17 0.013 WL IL 0160001 0074535 7/28/2014 ORIENT STP (SIRWA) 4 15 74 31 41.21144 -94.41441 THOMPSON R. 1 WASTE STABILIZATION LAGOON 466 80 0.029 0.0432 WL IL 6663001 0032956 4/30/2024 OSAGE CITY OF STP 2 26 98 17 43.27921 -92.83094 CEDAR R. ABOVE THE SHELLROCK R. 2 OXIDATION DITCH 14760 2465 0.968 1.071 WW III 2038002 0041815 3/31/2026 OSCEOLA CITY OF STP 5 21 72 25 41.01774 -93.75564 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 TRICKLING FILTER 24329 4063 1.065 2.648 WW III 2038003 0082953 6/30/2025 OSCEOLA CITY OF WTP 5 13 72 26 41.04176 -93.80507 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 PRIMARY TREATMENT 7856100 0065111 5/31/2024 OSI INDUSTRIES, LLC 4 1 75 40 41.3331 -95.3841 WEST NISHNABOTNA R. 2 SEQUENCING BATCH REACTOR 95210 15900 0.491 0.78 6273001 0038539 3/31/2026 OSKALOOSA CITY OF STP (NORTHEAST) 5 7 75 15 41.31405 -92.62464 SKUNK R. ABOVE THE NORTH SKUNK 1 TRICKLING FILTER 8814 1472 0.904 2.5 WW III 6273002 0038521 3/31/2026 OSKALOOSA CITY OF STP (SOUTHWEST) 5 26 75 16 41.27381 -92.66461 DES MOINES R. BELOW WHITEBREAST CR. 1 ACTIVATED SLUDGE 9802 1637 0.745 2.25 WW III 9677003 0042781 9/3/2006 OSSIAN CITY OF STP 1 10 96 08 43.14406 -91.77837 TURKEY R. 1 AERATED LAGOON 946 158 0.083 0.293 WL IL 9464001 0032948 10/31/2019 OTHO CITY OF STP 2 17 88 28 42.42771 -94.14286 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 WASTE STABILIZATION LAGOON 563 94 0.06 0.15 WL IL 9758001 0065811 6/30/2022 OTO CITY OF STP 3 6 86 43 42.29467 -95.89724 LITTLE SIOUX R. 1 WASTE STABILIZATION LAGOON 186 31 0.015 0.018 WL IL 9083001 0058611 6/30/2023 OTTUMWA CITY OF STP 6 29 72 13 41.0023 -92.38457 DES MOINES R. BELOW WHITEBREAST CR. 1 ACTIVATED SLUDGE 69539 11613 6 10 WW IV 9083000 0000035 4/30/2021 OTTUMWA WATER WORKS, CITY OF 6 30 72 13 41.01903 -92.41676 DES MOINES R. BELOW WHITEBREAST CR. 1 OTHER 0.74 0.74 9083003 0078972 2/28/2025 OTTUMWA, CITY OF MS4 6 26 72 13 41.00807 -92.43082 DES MOINES R. BELOW WHITEBREAST CR. 1 NO TREATMENT 5260001 0032531 12/31/2025 OXFORD CITY OF STP 6 21 80 08 41.71761 -91.78406 IOWA R. BELOW NORTH LIBERTY 1 SEQUENCING BATCH REACTOR 1018 170 0.096 0.239 WW II 5361001 0032450 9/30/2021 OXFORD JUNCTION CITY OF STP 1 27 83 01 41.97445 -90.95433 WAPSIPINICON R. BELOW ANAMOSA 1 WASTE STABILIZATION LAGOON 808 135 0.087 WL IL 5260000 0082252 7/6/2014 OXFORD WATER TREATMENT PLANT 6 9 80 08 41.75665 -91.78491 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 OTHER 7561001 0032336 4/30/2023 OYENS CITY OF STP 3 5 92 44 42.81829 -96.06524 FLOYD R. 1 WASTE STABILIZATION LAGOON 114 19 0.0113 0.0113 WL IL 5161001 0057819 1/14/2007 PACKWOOD CITY OF STP 6 14 73 11 41.12999 -92.08724 SKUNK R. BELOW THE NORTH SKUNK 1 AERATED LAGOON 329 55 0.041 0.095 WL IL 7622001 0079308 10/31/2022 PALMER, CITY OF STP 3 13 90 32 42.61692 -94.57774 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 WASTE STABILIZATION LAGOON 218 36 0.0254 WL IL 8355001 0071455 12/31/2023 PANAMA CITY OF STP 4 23 80 40 41.73108 -95.4756 PIGEON AND MOSQUITO CR.S 2 WASTE STABILIZATION LAGOON 171 28.6 0.0243 0.0227 WL IL 8355000 0082856 8/31/2025 PANAMA CITY OF WTP 4 14 80 40 41.73788 -95.47799 PIGEON AND MOSQUITO CR.S 1 OTHER 3971001 0057045 3/31/2022 PANORA CITY OF STP 4 5 79 30 41.6847 -94.36399 MIDDLE AND SOUTH RACCOON R.S 1 AERATED LAGOON 6174 1031 0.1414 0.51 WL I 6368301 0075434 4/30/2022 PARK HILLS WASTEWATER FACILITY 5 28 77 19 41.44155 -93.05117 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 90 15 0.012 0.012 WL IL 8200902 0062561 4/30/2023 PARK VIEW SANITARY DIST. STP 6 25 80 03 41.70701 -90.55053 WAPSIPINICON R. BELOW ANAMOSA 1 AERATED LAGOON 5090 850 0.492 0.5 WL I 6900100 0004693 3/31/2023 PARKER-HANNIFIN CORPORATION 4 17 72 38 41.03515 -95.23379 EAST NISHNABOTNA R. 1 OTHER 1281001 0058831 3/31/2022 PARKERSBURG CITY OF STP 2 19 90 16 42.58601 -92.7786 WEST FORK CEDAR R. 1 WASTE STABILIZATION LAGOON 1347 225 0.489 WL IL 0400302 0053188 2/28/2025 PARKSIDE KNOLLS HOA 5 1 67 16 40.86965 -92.94065 DES MOINES R. BELOW WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 5200603 0068349 9/30/2025 PARKVIEW MOBILE HOME COURT 6 23 80 08 41.71835 -91.75139 IOWA R. BELOW NORTH LIBERTY 1 WASTE STABILIZATION LAGOON 126 21 0.023 4863001 0071188 4/30/2022 PARNELL CITY OF STP 6 9 78 10 41.58278 -92.01376 IOWA R. BELOW NORTH LIBERTY 1 WASTE STABILIZATION LAGOON 311 52 0.0205 0.0295 WL IL 3748001 0060321 10/31/2022 PATON CITY OF STP 4 20 85 29 42.1588 -94.25738 NORTH RACCOON R. 1 WASTE STABILIZATION LAGOON 489 81.6 0.048 WL IL 6151001 0062961 3/31/2022 PATTERSON CITY OF STP 5 29 76 26 41.34923 -93.87517 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 407 68 0.04 WL IL 2200102 0080624 2/28/2023 PATTISON SAND CO., LLC 1 7 93 02 42.8954 -91.13391 MISSISSIPPI R. ABOVE THE TURKEY R. 1 OTHER 7257895 0053072 4/30/2024 Paul Feldkamp 3 15 99 41 43.40066 -95.68083 ROCK R. 1 OTHER 7139001 0032352 3/31/2022 PAULLINA CITY OF STP 3 10 94 41 42.97555 -95.67509 LITTLE SIOUX R. 1 AERATED LAGOON 5018 838 0.124 0.442 WL I 1716107 0081108 11/1/2012 PAYLESS FOODS 2 13 96 22 43.13606 -93.38061 WINNEBAGO R. 1 NO TREATMENT 5100501 0052961 7/31/2024 PEKIN COMMUNITY SCHOOL DISTRICT 6 6 73 11 41.15901 -92.16574 SKUNK R. BELOW THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 309 51.6 0.016 0.0161 6368006 0043869 8/31/2021 PELLA CITY OF STP 5 22 76 18 41.37475 -92.92058 DES MOINES R. BELOW WHITEBREAST CR. 1 ACTIVATED SLUDGE 27904 4660 2.304 3.4 WW IV 6368000 0075001 2/28/2022 PELLA WATER TREATMENT PLANT 5 15 76 18 41.385 -92.91666 DES MOINES R. BELOW WHITEBREAST CR. 1 OTHER 2800901 0065854 1/31/2016 PENN CENTER, INC. 1 18 88 04 42.43406 -91.35766 MAQUOKETA R. 1 WASTE STABILIZATION LAGOON 63 10 0.007 3150000 0075507 7/31/2019 PEOSTA, CITY OF STP 1 8 88 01 42.4453 -90.86697 MAQUOKETA R. 2 WASTE STABILIZATION LAGOON 3120 521 0.2 0.25 WL IL 7780101 0081035 2/28/2025 PEPSI BEVERAGES COMPANY 5 21 79 25 41.63053 -93.76327 NORTH RACCOON R. 1 NO TREATMENT 8400100 0004235 5/19/2025 PERDUE PREMIUM MEAT CO. AKA SIOUX PREME PACKING CO. - LAOP 3 20 95 45 43.03472 -96.18058 FLOYD R. 3 LAND APPLICATION 44994 7514 0.396 2835101 0072877 12/31/2023 PERMEATE REFINING 1 13 87 04 42.34448 -91.24791 MAQUOKETA R. 1 NO TREATMENT 2561001 0032379 10/4/2010 PERRY CITY OF STP 5 16 81 28 41.83048 -94.11248 NORTH RACCOON R. 2 ACTIVATED SLUDGE 22754 3800 5.2 0.91 WW IV 4360001 0073881 1/31/2016 PERSIA STP (REGIONAL WATER INC.) 4 9 78 41 41.56558 -95.57202 BOYER R. 1 WASTE STABILIZATION LAGOON 317 53 0.0312 WL IL 2853001 0079740 8/31/2026 PETERSBURG, CITY OF STP (EIRUSS) 1 4 89 03 42.5495 -91.21871 MAQUOKETA R. 1 WASTE STABILIZATION LAGOON 231 38.6 0.013 0.021 WL IL 1156419 0079201 9/30/2025 Peterson Cattle Company 3 20 92 35 42.77774 -94.9986 NORTH RACCOON R. 1 OTHER 2154002 0033677 2/28/2023 PETERSON CITY OF STP 3 33 94 38 42.92095 -95.32877 LITTLE SIOUX R. 1 WASTE STABILIZATION LAGOON 553 92.3 0.065 WL IL 9757143 0079316 8/31/2025 Peterson Feedlot - Whiskey Creek 3 12 88 47 42.44865 -96.25821 MISSOURI R. FROM SIOUX CITY TO THE LITTLE SIOUX 1 OTHER 2756899 0080861 12/13/2017 Petty Custom Cattle Feeding 5 20 68 25 40.67833 -93.76052 THOMPSON R. 1 OTHER 7856795 0080314 4/30/2022 Pheasant Ridge Farm, Inc. 4 32 76 42 41.3362 -95.69332 PIGEON AND MOSQUITO CR.S 1 OTHER 9766002 0033685 3/31/2016 PIERSON CITY OF STP 3 7 89 42 42.53795 -95.85935 LITTLE SIOUX R. 1 WASTE STABILIZATION LAGOON 500 84 0.05 WL IL 8600402 0074977 11/30/2017 PILGRIM HEIGHTS RETREAT CENTER-STP 5 11 83 16 42.00787 -92.68339 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 SEPTIC TANK SAND FILTER 80 14 0.008 0862001 0058530 6/30/2024 PILOT MOUND CITY OF STP 5 20 85 27 42.15218 -94.01937 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 WASTE STABILIZATION LAGOON 278 46.5 0.031 WL IL 8200202 0076007 2/29/2024 PILOT TRAVEL CENTER #043 6 25 79 02 41.61861 -90.78417 CEDAR R. BELOW CEDAR RAPIDS 1 OTHER 7900209 0078361 8/31/2024 PILOT TRAVEL CENTER #495 5 33 80 13 41.69714 -92.35821 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 2 ACTIVATED SLUDGE 150 25 0.0075 0.0075 1600201 0069043 3/31/2016 PILOT TRAVEL CENTERS #496 6 13 79 03 41.64374 -91.15165 CEDAR R. BELOW CEDAR RAPIDS 1 WASTE STABILIZATION LAGOON 64 11 0.0034 4364001 0057827 1/31/2023 PISGAH CITY OF STP 4 14 81 44 41.83029 -95.92894 SOLDIER R. 2 WASTE STABILIZATION LAGOON 336 56.1 0.0215 0.0675 WL IL 9756576 0080683 6/30/2021 Pithan Feedlots, Inc. 3 33 88 43 42.39214 -95.84714 LITTLE SIOUX R. 1 OTHER 0960001 0033693 12/31/2022 PLAINFIELD CITY OF STP 1 29 93 14 42.84737 -92.52947 CEDAR R. ABOVE THE SHELLROCK R. 1 WASTE STABILIZATION LAGOON 569 95 0.022 0.034 WL IL 0484001 0080845 2/28/2025 PLANO, IOWA-ADLM-FMS 5 21 69 19 40.7599 -93.04409 CHARITON R. 1 WASTE STABILIZATION LAGOON 61 10.2 0.0045 0.006 WL IL 4200122 0079138 2/28/2022 PLCP, L.P. 2 3 88 19 42.45711 -93.05614 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 NO TREATMENT 7767002 0078751 11/30/2024 PLEASANT HILL, CITY OF MS4 5 4 78 23 41.59781 -93.51294 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 NO TREATMENT 5171001 0082554 8/31/2015 PLEASANT PLAIN CITY OF STP (RUSS) 6 1 73 09 41.14752 -91.84339 SKUNK R. BELOW THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 202 34 0.015 0.0198 WL IL 7900208 0078018 8/31/2022 PLEASANT STAY INN & SUITES 5 33 80 13 41.69666 -92.35972 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 SEPTIC TANK SAND FILTER 60 10 0.005 0.005 6377001 0035921 7/31/2022 PLEASANTVILLE CITY OF STP 5 16 76 21 41.38385 -93.2811 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 2 SEQUENCING BATCH REACTOR 2144 358 0.26 0.87 WW III 1759001 0033383 7/31/2023 PLYMOUTH CITY OF STP 2 7 97 19 43.23453 -93.13013 SHELLROCK R. 2 AERATED LAGOON 479 80 0.072 0.237 WL IL 7500115 0081248 9/30/2018 PLYMOUTH ENERGY, LLC 3 2 91 46 42.72951 -96.25028 FLOYD R. 1 NO TREATMENT 5600108 0070602 2/28/2022 PNB PROCESSORS, L.L.C. 6 25 69 04 40.74972 -91.26889 SKUNK R. BELOW THE NORTH SKUNK 1 OTHER

51 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Region Section Town Range Latitude Longitude FAC DES BASIN Design Treatment Type PE Design BOD ADW Flow AWW Opcert Opcert Number Flow Type Grade 7633001 0035173 2/28/2026 POCAHONTAS CITY OF STP 3 6 91 32 42.72885 -94.66028 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 ACTIVATED SLUDGE 3084 515 0.35 0.92 WW III 4700107 0081558 2/29/2024 POET BIOREFINING - ARTHUR, LLC 3 23 87 39 42.32882 -95.34308 MAPLE R. 1 NO TREATMENT 0.713 0.839 7200108 0078051 6/30/2020 POET BIOREFINING - ASHTON, LLC 3 28 98 42 43.27652 -95.80854 ROCK R. 1 NO TREATMENT 3900104 0077003 7/31/2025 POET BIOREFINING - COON RAPIDS, LLC 4 1 81 33 41.86088 -94.63124 MIDDLE AND SOUTH RACCOON R.S 1 NO TREATMENT 0200104 0080063 8/31/2022 POET BIOREFINING - CORNING 4 8 71 34 40.96577 -94.79515 EAST NODAWAY R. 1 NO TREATMENT 7400102 0078492 8/31/2024 POET BIOREFINING - EMMETSBURG, LLC 3 32 96 32 43.09709 -94.65539 DES MOINES R. ABOVE THE EAST FORK DES MOINES 1 OTHER 3300114 0079812 10/31/2024 POET BIOREFINING - FAIRBANK, LLC 1 33 91 10 42.63914 -92.03102 WAPSIPINICON R. ABOVE ANAMOSA 1 NO TREATMENT 9400120 0079570 2/28/2022 POET BIOREFINING - GOWRIE 2 25 87 30 42.31972 -94.28778 NORTH RACCOON R. 1 NO TREATMENT 9800112 0078042 11/30/2021 POET BIOREFINING - HANLONTOWN, LLC 2 24 98 22 43.29012 -93.38899 WINNEBAGO R. 1 PRIMARY TREATMENT 4000109 0079588 11/30/2023 POET BIOREFINING - JEWELL 2 20 87 24 42.32698 -93.65943 SKUNK R. ABOVE THE NORTH SKUNK 1 NO TREATMENT 1200108 0081272 3/31/2024 POET BIOREFINING - SHELL ROCK, LLC 2 33 92 15 42.73792 -92.61367 SHELLROCK R. 1 NO TREATMENT 1363001 0032824 6/30/2022 POMEROY CITY OF STP 3 6 89 32 42.54572 -94.66726 NORTH RACCOON R. 2 WASTE STABILIZATION LAGOON 725 121 0.055 0.162 WL IL 8365001 0072443 1/31/2025 PORTSMOUTH CITY OF STP 4 20 79 40 41.63754 -95.5228 PIGEON AND MOSQUITO CR.S 1 WASTE STABILIZATION LAGOON 244 40.8 0.02 0.02 WL IL 0375001 0058904 4/30/2024 POSTVILLE CITY OF STP 1 33 96 06 43.0903 -91.55776 YELLOW R. AND PAINT CR. 2 ACTIVATED SLUDGE 5772 964 0.382 0.867 WW III 8456323 0078981 7/31/2025 Poverty Acres Feedlot, Inc 3 9 94 43 42.98206 -95.92773 FLOYD R. 1 OTHER 5064001 0033073 6/30/2024 PRAIRIE CITY, CITY OF STP 5 1 78 21 41.5816 -93.21759 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 2 SEQUENCING BATCH REACTOR 3228 539 0.31 0.78 WW III 2200100 0003808 6/30/2024 PRAIRIE FARMS DAIRY 1 16 95 05 43.05183 -91.43992 TURKEY R. 2 ACTIVATED SLUDGE 19760 3300 7500120 0052775 8/31/2020 PRAIRIE SUN FOODS, LLC 3 2 91 46 42.73375 -96.25147 FLOYD R. 1 NO TREATMENT 3300901 0061875 10/31/2016 PRAIRIE VIEW CARE FACILITY 1 6 93 08 42.89945 -91.83546 TURKEY R. 1 WASTE STABILIZATION LAGOON 162 27 0.0105 5772001 0063347 5/31/2025 PRAIRIEBURG CITY OF STP 1 21 86 05 42.23848 -91.43804 WAPSIPINICON R. ABOVE ANAMOSA 1 WASTE STABILIZATION LAGOON 383 64 0.031 WL IL 0270001 0033456 3/31/2022 PRESCOTT CITY OF STP 4 23 72 33 41.01631 -94.61435 EAST NODAWAY R. 1 WASTE STABILIZATION LAGOON 599 100 0.05 0.0677 WL IL 3126502 0081817 2/28/2025 PRESCOTT ELEMENTARY SCHOOL 1 24 89 02 42.50439 -90.66626 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 NO TREATMENT 4965001 0047864 4/30/2022 PRESTON CITY OF STP 1 20 84 05 42.06428 -90.4006 MAQUOKETA R. 2 AERATED LAGOON 1725 288 0.106 0.186 WL IL 7155001 0033031 7/31/2022 PRIMGHAR CITY OF STP 3 6 95 40 43.08438 -95.61421 LITTLE SIOUX R. 2 WASTE STABILIZATION LAGOON 976 163 0.1224 WL IL 8273001 0033227 6/30/2022 PRINCETON CITY OF STP 6 35 80 05 41.6858 -90.35261 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 2 AERATED LAGOON 1629 272 0.086 0.392 WL IL 0819102 0076953 8/19/2014 PROLIANT HEALTH & BIOLOGICALS 5 3 83 26 42.03401 -93.86462 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 NO TREATMENT 9360001 0082007 10/31/2022 PROMISE CITY, CITY OF STP 5 27 69 20 40.74403 -93.14455 CHARITON R. 1 WASTE STABILIZATION LAGOON 149 25 0.0077 0.0126 WL IL 4552001 0061352 10/31/2016 PROTIVIN CITY OF STP 1 13 97 11 43.2274 -92.08082 TURKEY R. 1 WASTE STABILIZATION LAGOON 497 83 0.0462 WL IL 8457953 0080195 1/31/2022 Pruismann Feedlot 3 9 96 46 43.15074 -96.27505 BIG SIOUX R. BELOW THE ROCK 1 OTHER 2662001 0074802 1/31/2025 PULASKI, CITY OF STP 6 8 68 12 40.70191 -92.26856 FOX AND WYACONDA R.S 1 WASTE STABILIZATION LAGOON 269 45 0.0262 WL IL 3100201 0080233 10/31/2017 Q CASINO 1 18 89 03 42.51772 -90.6441 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 NO TREATMENT 4700105 0076813 6/30/2022 QUAD COUNTY CORN PROCESSORS 3 35 89 39 42.47638 -95.4125 MAPLE R. 1 AERATED LAGOON 8683 1450 0.027 0.028 0709108 0074071 1/31/2023 QUAD STATE GAUGING & MEASUREMENT 1 36 89 14 42.48107 -92.45297 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 NO TREATMENT 5715115 0000761 9/30/2021 QUAKER MANUFACTURING, LLC 1 21 83 07 41.98131 -91.67152 CEDAR R. BELOW CEDAR RAPIDS 1 NO TREATMENT 4800103 0072044 6/30/2024 QUANTUM PLASTICS 6 31 80 12 41.69979 -92.27972 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 WASTE STABILIZATION LAGOON 92 15 1074001 0057011 2/29/2024 QUASQUETON CITY OF STP 1 34 88 08 42.38998 -91.75847 WAPSIPINICON R. ABOVE ANAMOSA 1 AERATED LAGOON 1108 185 0.062 0.08 WL IL 9083104 0078000 9/30/2023 QUEST LINER, INC. - LAOP 6 23 72 14 41.02048 -92.44623 DES MOINES R. BELOW WHITEBREAST CR. 1 OTHER 1855001 0042994 8/31/2026 QUIMBY CITY OF STP 3 2 90 41 42.63438 -95.6505 LITTLE SIOUX R. 1 WASTE STABILIZATION LAGOON 455 76 0.041 WL IL 4283001 0033707 4/30/2017 RADCLIFFE CITY OF STP 2 28 87 22 42.31059 -93.40561 IOWA R. ABOVE ALBION 2 WASTE STABILIZATION LAGOON 649 108 0.0899 WL IL 9575001 0062804 9/30/2022 RAKE CITY OF STP 2 10 100 26 43.49264 -93.90635 BLUE EARTH R. 1 WASTE STABILIZATION LAGOON 561 93.75 0.0408 WL IL 4800705 0066265 12/31/2022 RAMADA INN 6 5 79 09 41.68617 -91.9151 IOWA R. BELOW NORTH LIBERTY 1 AERATED LAGOON 1569 262 0.046 0.046 3361001 0076660 6/30/2024 RANDALIA CITY OF STP 1 23 93 09 42.86057 -91.88037 TURKEY R. 1 SEPTIC TANK SAND FILTER 89 15 0.008 0.009 WW W 3649001 0062979 8/31/2025 RANDOLPH CITY OF STP 4 16 70 41 40.86663 -95.57178 WEST NISHNABOTNA R. 1 WASTE STABILIZATION LAGOON 274 46 0.0255 0.0255 WL IL 8464425 0083861 5/31/2023 Randy Kats Feedlot 3 11 97 46 43.22961 -96.25014 ROCK R. 1 OTHER 0400918 0075418 1/31/2024 RATHBUN REGIONAL WATER ASSOCIATION 5 35 70 18 40.81608 -92.89156 CHARITON R. 1 OTHER 0.038 0768002 0078310 6/30/2025 RAYMOND, CITY OF MS4 1 35 88 12 42.46887 -92.22873 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 NO TREATMENT 0965001 0044440 6/30/2024 READLYN, CITY OF STP 1 14 91 12 42.6997 -92.2351 WAPSIPINICON R. ABOVE ANAMOSA 2 ACTIVATED SLUDGE 1174 196 0.085 0.25 WW II 9778152 0080721 6/30/2021 REAGENT CHEMICAL-BIG SOO 3 13 88 48 42.43698 -96.38189 MISSOURI R. FROM SIOUX CITY TO THE LITTLE SIOUX 1 NO TREATMENT 5071001 0047775 3/31/2026 REASNOR CITY OF STP 5 11 78 19 41.57078 -93.02513 SKUNK R. ABOVE THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 285 48 0.018 0.0285 WL IL 6950001 0040266 8/31/2024 RED OAK CITY OF STP 4 29 72 38 41.00359 -95.24243 EAST NISHNABOTNA R. 1 TRICKLING FILTER 11976 2000 0.84 2.7 WW III 8464082 0083097 11/30/2025 Red Rock Cattle 3 4 96 46 43.16788 -96.29121 BIG SIOUX R. BELOW THE ROCK 1 OTHER 2564001 0036099 9/30/2022 REDFIELD CITY OF STP 5 4 78 29 41.57959 -94.20057 MIDDLE AND SOUTH RACCOON R.S 1 WASTE STABILIZATION LAGOON 1174 196 0.142 WL IL 1400108 0052331 6/30/2026 REG RALSTON LLC 4 36 84 33 42.04113 -94.63682 NORTH RACCOON R. 1 OTHER 8300105 0077429 4/30/2023 REGIONAL WATER RURAL WATER ASSOCIATION WATER PLANT 4 33 79 39 41.50974 -95.33578 WEST NISHNABOTNA R. 1 OTHER 3870001 0033308 8/31/2024 REINBECK, CITY OF STP 2 21 87 15 42.32784 -92.59737 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 2 SEQUENCING BATCH REACTOR 2778 464 0.306 0.728 WW III 4700106 0077259 7/31/2022 RELIANT PROCESSING GALVA PLANT 3 35 89 39 42.47892 -95.41677 MAPLE R. 1 OTHER 1170001 0033219 2/28/2017 REMBRANDT CITY OF STP 3 1 92 37 42.81961 -95.17067 NORTH RACCOON R. 1 WASTE STABILIZATION LAGOON 407 68 0.0267 0.0299 WL IL 1100106 0076554 11/30/2023 REMBRANDT ENTERPRISES, INC. 3 32 93 36 42.82366 -95.13176 NORTH RACCOON R. 3 WASTE STABILIZATION LAGOON 100 17 0.0075 0.0075 9500102 0076252 8/31/2018 REMBRANDT ENTERPRISES, INC. 2 6 99 24 43.41555 -93.72172 WINNEBAGO R. 2 AERATED LAGOON 2994 5000 0.15 1100116 0052991 7/31/2023 REMBRANDT ENTERPRISES, INC. - LAOP 3 32 93 36 42.82358 -95.13183 NORTH RACCOON R. 1 AERATED LAGOON 29162 4870 0.08 0.09 8456481 0078387 6/30/2023 Remmerde Farms 3 10 96 46 43.15644 -96.26037 BIG SIOUX R. BELOW THE ROCK 1 OTHER 7568001 0036030 11/30/2025 REMSEN CITY OF STP 3 1 92 44 42.80867 -95.99508 FLOYD R. 2 ADVANCED AERATED LAGOON 1737 290 0.213 0.444 WL II 9969001 0032760 2/28/2023 RENWICK CITY OF STP 2 6 92 26 42.8194 -93.96155 BOONE R. 1 WASTE STABILIZATION LAGOON 2910 486 0.096 WL IL 5475100 0073474 8/31/2023 RESPONSIBLE TRANSPORTATION - LAOP 6 30 76 11 41.36573 -92.18025 NORTH SKUNK R. 1 LAND APPLICATION 509 85 0.03 6480001 0036960 5/31/2026 RHODES CITY OF STP 5 16 82 20 41.91968 -93.18827 SKUNK R. ABOVE THE NORTH SKUNK 2 WASTE STABILIZATION LAGOON 862 144 0.035 0.118 WL IL 6670001 0032514 11/30/2023 RICEVILLE CITY OF STP 2 36 99 15 43.35648 -92.56261 WAPSIPINICON R. ABOVE ANAMOSA 1 WASTE STABILIZATION LAGOON 1437 240 0.12 WL IL 5470001 0061328 2/28/2022 RICHLAND CITY OF STP 6 26 74 10 41.18637 -91.97881 SKUNK R. BELOW THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 802 134 0.0722 WL IL 8456546 0080527 11/30/2022 Rick Koenen Feedlot, Inc. 3 17 96 46 43.13961 -96.2948 BIG SIOUX R. BELOW THE ROCK 1 OTHER 3175001 0066311 8/31/2021 RICKARDSVILLE CITY OF STP 1 29 90 01 42.58455 -90.86936 LITTLE MAQUOKETA R. 1 WASTE STABILIZATION LAGOON 254 42 0.025 WL IL 2441001 0042927 7/31/2023 RICKETTS CITY OF STP 4 35 85 41 42.12537 -95.57683 SOLDIER R. 1 SEPTIC TANK SAND FILTER 102 17 0.0143 0.0143 WW W 9680001 0058726 1/31/2023 RIDGEWAY CITY OF STP 1 13 98 10 43.29903 -91.97838 UPPER IOWA R. 1 WASTE STABILIZATION LAGOON 359 60 0.0289 WL IL 1374001 0033715 11/30/2022 RINARD CITY OF STP 3 20 87 31 42.33551 -94.48971 NORTH RACCOON R. 1 SEPTIC TANK SAND FILTER 15 2 0.004 0.006 WW W 3275001 0057436 4/30/2023 RINGSTED CITY OF STP 3 15 98 31 43.30591 -94.50226 EAST FORK DES MOINES R. 1 WASTE STABILIZATION LAGOON 647 108 0.077 WL IL 3754001 0041882 12/31/2022 RIPPEY CITY OF STP 4 11 82 29 41.93458 -94.19353 NORTH RACCOON R. 1 WASTE STABILIZATION LAGOON 419 70 0.0419 0.0419 WL IL 7800301 0071269 11/30/2024 RISEN SON CHRISTIAN VILLAGE 4 9 74 43 41.2325 -95.8 PIGEON AND MOSQUITO CR.S 2 ACTIVATED SLUDGE 820 137 0.05 0.05 7159443 0081230 6/30/2023 Ritter Cattle Company 3 11 97 42 43.24415 -95.77545 FLOYD R. 1 OTHER 8278002 0078832 8/31/2024 RIVERDALE, CITY OF MS4 6 23 78 04 41.54007 -90.46471 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 1 NO TREATMENT 9260001 0047945 6/30/2026 RIVERSIDE CITY OF STP 6 9 77 06 41.48456 -91.54313 IOWA R. BELOW NORTH LIBERTY 2 SEQUENCING BATCH REACTOR 8713 1455 0.444 0.654 WW III 3655000 0079995 12/31/2022 RIVERTON WATER TREATMENT PLANT 4 28 68 41 40.68642 -95.54658 EAST NISHNABOTNA R. 1 PRIMARY TREATMENT 3655001 0077097 12/31/2019 RIVERTON, CITY OF-STP 4 29 68 41 40.675 -95.57222 EAST NISHNABOTNA R. 1 WASTE STABILIZATION LAGOON 311 52 0.0304 WL IL 8271801 0076805 11/30/2022 RIVERVIEW MANOR (PRIVATE CARE FACILITY) 6 18 78 05 41.56826 -90.42179 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 1 WASTE STABILIZATION LAGOON 89 14.88 0.0081 7048301 0077453 12/31/2025 RIVERVIEW SUBDIVISION 6 21 77 01 41.45862 -90.84836 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 2 SEPTIC TANK SAND FILTER 59 9.9 0.005 0.0058 5776000 0078816 7/31/2025 ROBINS, CITY OF MS4 1 21 84 07 42.07028 -91.66713 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 NO TREATMENT 1769001 0063495 8/31/2023 ROCK FALLS CITY OF STP 2 22 97 19 43.20579 -93.07345 SHELLROCK R. 1 WASTE STABILIZATION LAGOON 198 33 0.0155 0.0155 WL IL 6065001 0032786 6/30/2026 ROCK RAPIDS CITY OF STP 3 4 99 45 43.42021 -96.16073 ROCK R. 1 TRICKLING FILTER 2934 490 0.295 0.502 WW II 6056382 0079022 10/31/2024 Rock River Feedyards, Inc. 3 10 99 46 43.41674 -96.25385 ROCK R. 1 OTHER 6066387 0083267 10/31/2021 Rock River Jerseys Combined Dairy 3 24 98 47 43.30137 -96.33474 ROCK R. 1 OTHER 8482001 0033057 10/31/2021 ROCK VALLEY CITY OF STP 3 20 97 46 43.20487 -96.30968 ROCK R. 2 SEQUENCING BATCH REACTOR 5587 933 0.653 0.753 WW III 3430001 0058432 7/31/2022 ROCKFORD CITY OF STP 2 14 95 18 43.0411 -92.9333 SHELLROCK R. 1 WASTE STABILIZATION LAGOON 1461 244 0.12 WL IL

52 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Region Section Town Range Latitude Longitude FAC DES BASIN Design Treatment Type PE Design BOD ADW Flow AWW Opcert Opcert Number Flow Type Grade 1376001 0033138 1/31/2023 ROCKWELL CITY, CITY OF STP 3 30 88 32 42.40785 -94.61291 NORTH RACCOON R. 1 TRICKLING FILTER 3168 529 0.321 1.015 WW II 1773001 0033481 7/31/2022 ROCKWELL, CITY OF STP 2 9 94 20 42.9718 -93.20974 WEST FORK CEDAR R. 1 WASTE STABILIZATION LAGOON 1569 262 0.152 WL IL 8570001 0032425 12/31/2025 ROLAND CITY OF STP 5 22 85 23 42.15827 -93.50545 SKUNK R. ABOVE THE NORTH SKUNK 2 ADVANCED AERATED LAGOON 1299 217 0.167 0.556 WL II 7639001 0032310 2/28/2025 ROLFE CITY OF STP 3 4 92 31 42.80549 -94.5161 DES MOINES R. ABOVE THE EAST FORK DES MOINES 2 WASTE STABILIZATION LAGOON 689 115 0.123 WL IL 8456731 0079341 6/30/2021 Rolling Hills Feedlot 3 4 94 47 42.99574 -96.41063 BIG SIOUX R. BELOW THE ROCK 1 OTHER 8500606 0067857 1/31/2025 ROLLING HILLS MOBILE HOME PARK 5 22 82 22 41.90334 -93.39905 SKUNK R. ABOVE THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 291 49 0.021 4475001 0072427 1/31/2016 ROME CITY OF STP 6 5 71 07 40.98532 -91.68224 SKUNK R. BELOW THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 126 21 0.0124 WL IL 3100200 0052748 4/30/2022 RON WHITE HWY 20 TRUCK PLAZA 1 12 88 01 42.44125 -90.78316 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 ACTIVATED SLUDGE 81 13.5 0.004 0.0045 5640109 0084336 8/31/2023 ROQUETTE AMERICA INC. - LAOP 6 35 65 05 40.38799 -91.39574 MISSISSIPPI R. NEAR FORT MADISON 1 LAND APPLICATION 5640101 0000256 6/30/2023 ROQUETTE AMERICA, INC. 6 36 65 05 40.38791 -91.39701 MISSISSIPPI R. NEAR FORT MADISON 1 ACTIVATED SLUDGE 446263 74526 4.89 4.89 0100104 0052306 10/28/2024 Rose Acre Farms - Livestock Truck Wash - LAOP 4 1 74 30 41.50321 -94.37381 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 LAND APPLICATION 6279001 0072311 12/31/2021 ROSE HILL CITY OF STP 5 9 75 14 41.31532 -92.47003 SKUNK R. ABOVE THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 174 29 0.0171 WL IL 3126105 0002984 8/31/2021 ROUSSELOT, INC. 1 18 89 03 42.521 -90.65415 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 NO TREATMENT 9958000 0053307 6/30/2026 ROWAN MUNICIPAL WATER SUPPLY 2 1 90 23 42.74085 -93.55168 IOWA R. ABOVE ALBION 1 OTHER 1080001 0043672 7/31/2022 ROWLEY CITY OF STP 1 12 87 09 42.36769 -91.83105 WAPSIPINICON R. ABOVE ANAMOSA 1 WASTE STABILIZATION LAGOON 429 72 0.0427 WL IL 2166001 0035408 11/30/2016 ROYAL CITY OF STP 3 1 95 38 43.06875 -95.27964 LITTLE SIOUX R. 1 WASTE STABILIZATION LAGOON 509 85 0.049 0.069 WL IL 2300603 0071391 9/30/2025 ROYAL PINES MHP, LLC 6 19 81 06 41.8157 -90.30608 MISSISSIPPI R. NEAR CLINTON 1 WASTE STABILIZATION LAGOON 443 74 0.026 0.039 8460416 0084069 7/31/2023 Royal Ridge Dairy (formerly Double V Dairy, LLC) 3 27 97 46 43.19368 -96.27408 ROCK R. 1 LAND APPLICATION 1856879 0079065 12/31/2019 RTCP Farm Partnership (Spring Valley Ranch) 3 8 93 39 42.89124 -95.4719 LITTLE SIOUX R. 1 OTHER 3440001 0061344 5/31/2016 RUDD CITY OF STP 2 13 96 18 43.12657 -92.91775 SHELLROCK R. 1 WASTE STABILIZATION LAGOON 670 112 0.0565 WL IL 7774001 0063355 4/30/2022 RUNNELLS CITY OF STP 5 35 78 22 41.51237 -93.3668 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 ACTIVATED SLUDGE 719 120 0.0519 0.07 WW II 8400701 0083283 7/31/2025 RURAL WATER SYSTEM #1 - PLANT #2 3 5 95 45 43.06977 -96.19257 FLOYD R. 1 OTHER 8400702 0083291 2/28/2025 RURAL WATER SYSTEM #1 - PLANT #3 3 21 95 45 43.04055 -96.16899 FLOYD R. 1 OTHER 1456442 0052403 12/31/2021 Russ Pudenz Farms, Inc. 4 16 82 35 42.16788 -94.91821 MIDDLE AND SOUTH RACCOON R.S 1 LAND APPLICATION 5939001 0043176 12/31/2024 RUSSELL CITY OF STP 5 5 71 20 40.97887 -93.18555 CHARITON R. 1 AERATED LAGOON 671 112 0.088 0.31 WL IL 7556723 0079600 7/31/2026 Russell Schmidt Feedlot 3 6 93 46 42.89595 -96.31557 FLOYD R. 1 OTHER 7465001 0032441 2/28/2026 RUTHVEN CITY OF STP 3 19 96 34 43.12558 -94.904 LITTLE SIOUX R. 1 WASTE STABILIZATION LAGOON 1443 241 0.1265 0.1685 WL IL 4675001 0061239 2/28/2022 RUTLAND CITY OF STP 2 29 92 29 42.75542 -94.29065 DES MOINES R. ABOVE THE EAST FORK DES MOINES 1 WASTE STABILIZATION LAGOON 263 44 0.0262 WL IL 2864001 0041785 3/31/2025 RYAN CITY OF STP 1 18 87 05 42.35431 -91.47306 MAQUOKETA R. 1 WASTE STABILIZATION LAGOON 458 77 0.041 0.105 WL IL 7856416 0079171 7/31/2026 S & B Feedyard 4 25 74 41 41.17479 -95.50476 WEST NISHNABOTNA R. 1 OTHER 1160248 0077755 4/30/2026 S & S Farms, Inc. 3 31 90 36 42.57552 -95.13526 NORTH RACCOON R. 1 OTHER 5456216 0077887 3/31/2023 S + S Farm 6 17 77 13 41.47134 -92.37455 NORTH SKUNK R. 1 OTHER 4975001 0032867 3/31/2024 SABULA CITY OF STP 1 29 84 07 42.05781 -90.17194 MISSISSIPPI R. NEAR SABULA 1 SEQUENCING BATCH REACTOR 1665 278 0.1308 0.2073 WW II 8150001 0033090 5/31/2026 SAC CITY, CITY OF STP 3 25 88 36 42.41109 -94.98234 NORTH RACCOON R. 1 ROTATING BIOLOGICAL 2731 456 0.354 0.7 WW II 3181501 0077984 9/30/2021 SAGEVILLE SCHOOL STP 1 34 90 03 42.56849 -90.71825 LITTLE MAQUOKETA R. 1 WASTE STABILIZATION LAGOON 83 14 0.0044 0.0056 9176001 0072451 9/30/2024 SAINT MARYS CITY OF STP 5 9 75 25 41.31473 -93.74026 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 162 27 0.012 WL IL 2277002 0071072 7/31/2022 SAINT OLAF CITY OF STP 1 25 94 05 42.92969 -91.38428 TURKEY R. 1 SEPTIC TANK SAND FILTER 153 25.5 0.015 0.015 WW W 4478001 0047996 1/31/2023 SALEM CITY OF STP 6 24 70 07 40.8506 -91.60948 SKUNK R. BELOW THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 485 81 0.0468 0.092 WL IL 9770001 0032913 8/31/2023 SALIX CITY OF STP 3 35 87 47 42.31141 -96.28225 MISSOURI R. FROM SIOUX CITY TO THE LITTLE SIOUX 1 WASTE STABILIZATION LAGOON 569 95 0.0544 WL IL 6800602 0064041 6/30/2023 SAMPLES COVENANT PARK 5 29 72 16 41.01291 -92.71667 DES MOINES R. BELOW WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 54 9 0.0042 7165001 0032522 6/30/2025 SANBORN CITY OF STP 3 34 97 41 43.17959 -95.66394 FLOYD R. 2 ROTATING BIOLOGICAL 24850 4150 0.471 0.983 WW III 5600608 0065391 3/31/2019 SANDUSKY MOBILE HOME VILLAGE 6 1 65 05 40.46445 -91.39333 MISSISSIPPI R. NEAR FORT MADISON 1 WASTE STABILIZATION LAGOON 18 3 0.0012 0.0013 3600201 0077461 12/31/2025 SAPP BROS.TRAVEL CENTER 4 21 68 43 40.69027 -95.79028 KEG AND WAUBONSIE CR.S 1 AERATED LAGOON 1359 227 0.099 9400900 0059200 2/28/2026 SAVAGE SANITARY DISTRICT STP 2 2 88 29 42.46489 -94.19911 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 AERATED LAGOON 599 100 0.05 0.09 WL IL 7727011 0079847 5/31/2025 SAYLORVILLE WATER TREATMENT PLANT 5 4 79 24 41.67888 -93.65418 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 OTHER 5200405 0052791 9/30/2026 SCALES POINTE CAMPGROUND & MARINA 6 19 81 06 41.80472 -91.58972 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 SEPTIC TANK SAND FILTER 24 4 0.0021 0.0021 2200901 0065749 8/31/2016 SCENIC ACRES CARE FACILITY 1 5 93 04 42.89348 -91.34882 TURKEY R. 2 WASTE STABILIZATION LAGOON 135 23 0.0131 8156001 0042935 11/30/2021 SCHALLER CITY OF STP 3 26 89 38 42.50378 -95.29664 MAPLE R. 1 WASTE STABILIZATION LAGOON 796 133 0.0775 0.092 WL IL 8356843 0079511 5/31/2026 Schechinger Farms, Inc. 4 34 80 39 41.69768 -95.38262 WEST NISHNABOTNA R. 1 OTHER 2446001 0036170 1/31/2022 SCHLESWIG CITY OF STP 4 19 85 39 42.15559 -95.43248 SOLDIER R. 1 AERATED LAGOON 928 155 0.091 0.181 WL IL 7556231 0080471 10/31/2022 Schnepf Farms 3 28 93 44 42.83741 -96.04854 FLOYD R. 1 OTHER 3759001 0032409 9/30/2025 SCRANTON CITY OF STP 4 11 83 32 42.01863 -94.53979 NORTH RACCOON R. 3 ADVANCED AERATED LAGOON 1383 231 0.102 0.29 WL II 7955001 0062553 7/31/2025 SEARSBORO CITY OF STP 5 10 78 16 41.57052 -92.70025 NORTH SKUNK R. 1 WASTE STABILIZATION LAGOON 299 50 0.028 WL IL 9774001 0078859 11/30/2021 SERGEANT BLUFF, CITY OF MS4 3 30 88 47 42.40403 -96.3597 MISSOURI R. FROM SIOUX CITY TO THE LITTLE SIOUX 1 NO TREATMENT 9774000 0052005 10/31/2023 SERGEANT BLUFF, CITY OF WTP 3 32 88 47 42.40063 -96.35634 MISSOURI R. FROM SIOUX CITY TO THE LITTLE SIOUX 1 NO TREATMENT 2326105 0000183 4/30/2023 SETHNESS PRODUCTS COMPANY 6 13 81 06 41.8158 -90.217 MISSISSIPPI R. NEAR CLINTON 1 NO TREATMENT 9368001 0055301 3/31/2016 SEYMOUR CITY OF STP 5 13 68 20 40.68156 -93.10202 CHARITON R. 1 WASTE STABILIZATION LAGOON 1096 183 0.11 WL IL 8165218 0083836 10/31/2022 SFI, Inc. 3 14 89 36 42.51701 -95.0457 NORTH RACCOON R. 1 OTHER 7380001 0069477 6/30/2020 SHAMBAUGH CITY OF STP 4 1 67 37 40.64653 -95.04109 NODAWAY R. 1 WASTE STABILIZATION LAGOON 254 42.5 0.025 WL IL 8770001 0076571 5/31/2016 SHARPSBURG,CITY-STP-(SIRWA) 4 4 69 33 40.80445 -94.65195 HUNDRED AND TWO 1 WASTE STABILIZATION LAGOON 122 20.4 0.012 0.012 WL IL 3570001 0036005 1/31/2025 SHEFFIELD CITY OF STP 2 9 93 20 42.88811 -93.21133 WEST FORK CEDAR R. 2 AERATED LAGOON 2467 412 0.175 0.888 WL IL 8369001 0036579 8/31/2020 SHELBY CITY OF STP 4 27 78 40 41.53301 -95.44132 WEST NISHNABOTNA R. 1 WASTE STABILIZATION LAGOON 695 116 0.123 WL IL 7170001 0032662 3/31/2026 SHELDON CITY OF STP 3 36 97 39 43.18247 -95.86458 FLOYD R. 2 SEQUENCING BATCH REACTOR 14970 2500 1.438 3.025 WW III 1286001 0033359 2/28/2022 SHELL ROCK CITY OF STP 2 14 91 15 42.69702 -92.57867 SHELLROCK R. 1 AERATED LAGOON 1832 306 0.15 0.282 WL IL 0670001 0033332 5/31/2006 SHELLSBURG CITY OF STP 1 14 84 09 42.09111 -91.86445 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 ACTIVATED SLUDGE 3479 581 0.32 0.48 WW III 3659001 0032328 2/28/2021 SHENANDOAH CITY OF STP 4 24 69 40 40.76654 -95.3947 EAST NISHNABOTNA R. 1 TRICKLING FILTER 8683 1450 0.867 1.88 WW III 7383000 0079081 10/31/2018 SHENANDOAH, CITY OF WTP 4 18 69 39 40.77075 -95.37474 EAST NISHNABOTNA R. 1 OTHER 3183001 0056952 12/31/2014 SHERRILL CITY OF STP (EAST) 1 18 90 02 42.60549 -90.77454 LITTLE MAQUOKETA R. 2 WASTE STABILIZATION LAGOON 359 60 0.03 WL IL 7245001 0032841 7/31/2025 SIBLEY CITY OF STP 3 25 99 42 43.3747 -95.7528 ROCK R. 1 WASTE STABILIZATION LAGOON 13772 2300 0.433 0.736 WL IL 3661001 0035971 5/31/2020 SIDNEY CITY OF STP 4 35 69 42 40.74321 -95.64098 WEST NISHNABOTNA R. 1 WASTE STABILIZATION LAGOON 1569 262 0.116 0.123 WL IL 5600104 0074951 3/31/2019 SIEMENS GAMESA RENEWABLE ENERGY, INC. 6 27 67 05 40.57832 -91.42692 MISSISSIPPI R. NEAR FORT MADISON 2 ACTIVATED SLUDGE 225 37.5 0.02 0.02 5475002 0036595 6/30/2020 SIGOURNEY CITY OF STP (EAST) 6 1 75 12 41.33369 -92.18846 NORTH SKUNK R. 1 AERATED LAGOON 3617 604 0.35 0.95 WL IL 5625111 0081264 9/30/2024 SILGAN CONTAINERS MANUFACTURING CORPORATION 6 11 67 05 40.62103 -91.4053 MISSISSIPPI R. NEAR FORT MADISON 1 NO TREATMENT 6575001 0079774 2/28/2022 SILVER CITY, CITY OF STP 4 14 73 42 41.1219 -95.6372 WEST NISHNABOTNA R. 1 WASTE STABILIZATION LAGOON 305 51 0.03 0.04 WL IL 7861149 0078409 3/31/2025 SILVER CREEK FEEDERS 4 21 74 41 41.20069 -95.565 WEST NISHNABOTNA R. 1 OTHER 1800100 0004634 9/30/2026 SIMONSEN RENDERING, LLC - LAOP 3 10 90 41 42.63035 -95.66505 LITTLE SIOUX R. 1 LAND APPLICATION 1281101 0053018 2/28/2025 SINCLAIR ELEVATOR INC. 2 27 90 16 42.57335 -92.73186 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 NO TREATMENT 8486002 0033731 2/28/2026 SIOUX CENTER CITY OF STP 3 15 95 45 43.05532 -96.15192 FLOYD R. 2 ACTIVATED SLUDGE 28144 4700 1.31 2.21 WW IV 8486000 0079383 4/30/2023 Sioux Center WTP 3 9 95 45 43.0696 -96.16191 FLOYD R. 1 PRIMARY TREATMENT 9778202 0069493 1/31/2023 SIOUX CITY COMMUNITY SCHOOL DISTRICT 3 28 89 47 42.4945 -96.40245 MISSOURI R. FROM SIOUX CITY TO THE LITTLE SIOUX 1 NO TREATMENT 9778002 0078662 11/30/2022 SIOUX CITY, CITY OF MS4 3 29 89 47 42.49947 -96.41344 MISSOURI R. FROM SIOUX CITY TO THE LITTLE SIOUX 1 NO TREATMENT 9778001 0043095 11/30/2025 SIOUX CITY, CITY OF STP 3 12 88 48 42.4541 -96.37549 MISSOURI R. FROM SIOUX CITY TO THE LITTLE SIOUX 1 ACTIVATED SLUDGE 522204 87208 15.98 17.6 WW IV 1175001 0042951 3/31/2024 SIOUX RAPIDS CITY OF STP 3 1 93 37 42.89617 -95.16165 LITTLE SIOUX R. 1 AERATED LAGOON 964 161 0.075 0.15 WL IL 8400114 0076791 6/30/2025 SIOUXLAND ENERGY COOPERATIVE 3 36 96 46 43.08864 -96.23422 BIG SIOUX R. BELOW THE ROCK 1 NO TREATMENT 8580001 0033740 5/31/2020 SLATER CITY OF STP 5 31 82 24 41.8719 -93.68184 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 AERATED LAGOON 2323 388 0.29 0.92 WL IL 9780001 0032361 2/29/2024 SLOAN CITY OF STP 3 32 86 46 42.22803 -96.22908 MISSOURI R. FROM SIOUX CITY TO THE LITTLE SIOUX 2 ADVANCED AERATED LAGOON 952 159 0.096 0.285 WL II 9783001 0056341 4/30/2026 SMITHLAND CITY OF STP 3 26 86 44 42.22872 -95.9265 LITTLE SIOUX R. 1 WASTE STABILIZATION LAGOON 311 52 0.0347 WL IL 6749001 0061743 10/31/2023 SOLDIER CITY OF STP 4 19 83 42 41.9819 -95.7759 SOLDIER R. 1 WASTE STABILIZATION LAGOON 341 57 0.0325 0.048 WL IL 5282001 0036978 4/30/2022 SOLON CITY OF STP 6 23 81 06 41.81084 -91.50219 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 2 OXIDATION DITCH 4054 677 0.38 0.68 WW III

53 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Region Section Town Range Latitude Longitude FAC DES BASIN Design Treatment Type PE Design BOD ADW Flow AWW Opcert Opcert Number Flow Type Grade 5478001 0084018 9/30/2022 SOUTH ENGLISH, CITY OF STP 6 26 77 11 41.44709 -92.08902 NORTH SKUNK R. 1 WASTE STABILIZATION LAGOON 234 39.1 0.023 WL IL 5502600 0065269 9/23/2006 SOUTH OAK ESTATES MHP (NOW BURR OAK MOTEL) 2 14 95 29 43.03996 -94.22892 EAST FORK DES MOINES R. 1 ACTIVATED SLUDGE 175 29 0.015 0.015 8500302 0068276 10/31/2022 SOUTH SQUAW VALLEY ASSOCIATION 5 20 84 24 42.07094 -93.66913 SKUNK R. ABOVE THE NORTH SKUNK 1 ACTIVATED SLUDGE 204 34 0.02 0.02 1100701 0083305 2/28/2017 SOUTH WEST SHORELINE SANITARY DISTRICT 3 13 90 37 42.60485 -95.16364 NORTH RACCOON R. 1 WASTE STABILIZATION LAGOON 353 59 0.048 WL IL 5500301 0068284 6/30/2026 SOUTHDALE ADDITION 2 14 95 29 43.04142 -94.2331 EAST FORK DES MOINES R. 2 ACTIVATED SLUDGE 216 36 0.006 0.006 4200601 0067679 8/12/2007 SOUTHPARK ESTATES 2 30 89 20 42.49543 -93.25504 IOWA R. ABOVE ALBION 1 ACTIVATED SLUDGE 305 51 0.03 0.03 7800106 0081043 12/31/2024 SOUTHWEST IOWA RENEWABLE ENERGY 4 31 74 43 41.16968 -95.82421 PIGEON AND MOSQUITO CR.S 1 NO TREATMENT 7700802 0052799 8/31/2023 SOUTHWEST POLK WATER SERVICE 5 1 79 24 41.54127 -93.73285 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 OTHER 8000702 0083968 9/30/2023 SOUTHWEST RINGGOLD COUNTY WWTF - SIRWA 4 24 68 31 40.67489 -94.36601 GRAND R. 1 WASTE STABILIZATION LAGOON 183 31 0.018 WL IL 2171004 0021059 2/29/2024 SPENCER, CITY OF STP 3 17 96 36 43.13391 -95.12404 LITTLE SIOUX R. 2 ROTATING BIOLOGICAL 33084 5525 1.95 3.7 WW III 9686001 0042749 6/30/2026 SPILLVILLE CITY OF STP 1 19 97 09 43.201 -91.94431 TURKEY R. 1 WASTE STABILIZATION LAGOON 614 103 0.022 0.0447 WL IL 4982001 0050741 6/30/2023 SPRAGUEVILLE CITY OF STP 1 19 84 05 42.07107 -90.42952 MAQUOKETA R. 1 ACTIVATED SLUDGE 219 37 0.013 0.013 WW II 3100606 0066087 1/31/2023 SPRING VALLEY MOBILE PARK 1 35 88 03 42.39464 -90.58561 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 TRICKLING FILTER 173 29 0.0168 0.018 4984001 0033154 8/31/2022 SPRINGBROOK CITY OF STP 1 23 85 04 42.16382 -90.46851 MAQUOKETA R. 2 WASTE STABILIZATION LAGOON 91 15.24 0.0106 0.0112 WL IL 5782002 0064726 4/30/2026 SPRINGVILLE CITY OF STP 1 32 84 05 42.04187 -91.44371 CEDAR R. BELOW CEDAR RAPIDS 1 WASTE STABILIZATION LAGOON 2754 460 0.26 0.3 WL IL 7000108 0074101 8/31/2024 SSAB IOWA INC. 6 11 77 01 41.48356 -90.82276 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 1 OTHER 6161001 0039896 11/30/2020 ST CHARLES CITY OF STP 5 23 75 26 41.27809 -93.81476 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 2 WASTE STABILIZATION LAGOON 1222 204 0.096 0.12 WL IL 4979001 0040304 11/30/2022 ST DONATUS CITY OF STP 1 7 87 04 42.35878 -90.53529 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 WASTE STABILIZATION LAGOON 300 50 0.03 WL IL 5675001 0076716 6/30/2016 ST PAUL CITY OF STP 6 23 69 06 40.76321 -91.50922 MISSISSIPPI R. NEAR FORT MADISON 1 WASTE STABILIZATION LAGOON 180 30 0.0165 WL IL 6673001 0033723 4/30/2024 ST. ANSGAR CITY OF STP 2 26 99 18 43.37129 -92.93289 CEDAR R. ABOVE THE SHELLROCK R. 1 AERATED LAGOON 1605 268 0.103 0.18 WL IL 6482001 0077291 9/30/2018 ST. ANTHONY CITY OF (IRUA) 5 33 85 20 42.12239 -93.18872 IOWA R. ABOVE ALBION 1 WASTE STABILIZATION LAGOON 114 19 0.0112 WL IL 3368001 0074705 5/31/2023 ST. LUCAS CITY OF STP 1 5 95 09 43.0765 -91.92467 TURKEY R. 1 WASTE STABILIZATION LAGOON 216 36 0.017 0.021 WL IL 6677001 0035254 10/31/2021 STACYVILLE, CITY OF STP 2 5 99 16 43.42202 -92.77103 CEDAR R. ABOVE THE SHELLROCK R. 1 WASTE STABILIZATION LAGOON 760 127 0.158 WL IL 8456480 0080110 11/30/2021 Stan Eisma Feedlot 3 24 94 46 42.94638 -96.21414 FLOYD R. 1 OTHER 4045001 0032743 1/31/2025 STANHOPE CITY OF STP 2 6 86 25 42.28921 -93.81148 SKUNK R. ABOVE THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 754 126 0.051 0.085 WL IL 1089001 0054178 11/30/2025 STANLEY CITY OF STP 1 5 90 08 42.64198 -91.81967 WAPSIPINICON R. ABOVE ANAMOSA 1 WASTE STABILIZATION LAGOON 218 36 0.0115 0.02 WL IL 6965001 0042978 9/24/2014 STANTON CITY OF STP 4 4 71 37 40.98131 -95.11206 TARKIO R. 1 WASTE STABILIZATION LAGOON 857 143 0.062 0.0727 WL IL 1681001 0033758 9/30/2026 STANWOOD CITY OF STP 6 23 82 03 41.89362 -91.15563 CEDAR R. BELOW CEDAR RAPIDS 2 ADVANCED AERATED LAGOON 1103 184.2 0.074 0.597 WL II 3300501 0053234 1/31/2026 STARMONT COMMUNITY SCHOOL DISTRICT 1 15 91 07 42.6887 -91.64917 TURKEY R. 1 WASTE STABILIZATION LAGOON 161 26.9 0.0158 0.0158 6484001 0041807 2/29/2024 STATE CENTER CITY OF STP 5 15 83 20 42.00403 -93.15659 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 AERATED LAGOON 2006 335 0.185 0.465 WL IL 3200105 0052462 10/31/2020 STATELINE COOPERATIVE 3 31 99 31 43.34958 -94.54468 EAST FORK DES MOINES R. 1 OTHER 4289001 0033324 12/31/2024 STEAMBOAT ROCK CITY OF STP 2 28 88 19 42.405 -93.07337 IOWA R. ABOVE ALBION 1 ACTIVATED SLUDGE 635 106 0.049 0.049 WW II 4764288 0080462 11/30/2022 Steve Meyer Feedlot (Formerly Meyer Brothers Feedlot) 3 28 89 40 42.49176 -95.58261 LITTLE SIOUX R. 1 OTHER 8973001 0061603 5/31/2016 STOCKPORT CITY OF STP 6 18 70 08 40.8655 -91.83316 SKUNK R. BELOW THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 541 90 0.0463 WL IL 7063001 0033464 1/31/2016 STOCKTON CITY OF STP 6 4 78 01 41.58888 -90.86128 CEDAR R. BELOW CEDAR RAPIDS 1 WASTE STABILIZATION LAGOON 359 60 0.04 WL IL 1178001 0032484 6/30/2024 STORM LAKE CITY OF STP 3 24 90 37 42.60444 -95.16376 NORTH RACCOON R. 2 ACTIVATED SLUDGE 38802 6480 2.3 6.45 WW IV 1178003 0078638 11/30/2025 STORM LAKE, CITY OF MS4 3 3 90 37 42.64534 -95.19983 NORTH RACCOON R. 1 NO TREATMENT 8584001 0035882 7/31/2024 STORY CITY CITY OF STP 5 12 85 23 42.18043 -93.58544 SKUNK R. ABOVE THE NORTH SKUNK 1 SEQUENCING BATCH REACTOR 5988 1000 0.414 0.948 WW III 3880001 0084107 6/30/2017 STOUT CITY OF STP 2 14 89 16 42.52615 -92.69599 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 WASTE STABILIZATION LAGOON 221 36.9 0.016 0.0217 WL IL 1856642 0080021 2/28/2022 Stowater Feedlot, Inc. 3 33 92 42 42.74567 -95.80058 WEST FORK LITTLE SIOUX R. 1 OTHER 9480001 0035980 9/6/2012 STRATFORD CITY OF STP 2 12 86 27 42.2824 -93.93211 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 WASTE STABILIZATION LAGOON 1156 193 0.12 0.155 WL IL 2279001 0042757 11/30/2024 STRAWBERRY POINT CITY OF STP 1 34 91 06 42.65893 -91.53608 MAQUOKETA R. 2 ADVANCED AERATED LAGOON 1820 304 0.146 0.58 WL II 2839100 0063533 1/31/2025 STRYTEN MANCHESTER, LLC 1 31 89 05 42.47299 -91.47215 MAQUOKETA R. 1 OTHER 0.1345 3973001 0041858 1/31/2025 STUART CITY OF STP 4 33 78 30 41.51758 -94.31386 MIDDLE AND SOUTH RACCOON R.S 2 ACTIVATED SLUDGE 2960 507 0.25 0.73 WW III 0100103 0052242 9/30/2025 STUART EGG FARM - LAOP 4 1 77 30 41.50201 -94.38402 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 LAND APPLICATION 5200907 0083674 7/31/2024 SUGAR BOTTOM RECREATION AREA 6 4 80 06 41.76037 -91.56038 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 WASTE STABILIZATION LAGOON 102 17 0.0073 5076001 0041963 2/28/2026 SULLY CITY OF STP 5 4 78 17 41.58779 -92.83346 NORTH SKUNK R. 1 ACTIVATED SLUDGE 970 162 0.095 0.99 WW II 0970001 0033766 8/31/2022 SUMNER CITY OF STP 1 26 93 11 42.8366 -92.10169 WAPSIPINICON R. ABOVE ANAMOSA 1 OXIDATION DITCH 2545 425 0.206 0.82 WW III 8000701 0069469 6/30/2020 SUN VALLEY SANITARY DISTRICT LAGOON 4 27 70 28 40.83347 -94.06282 THOMPSON R. 2 WASTE STABILIZATION LAGOON 988 165 0.076 WL IL 3100400 0068748 8/31/2019 SUNDOWN MOUNTAIN RESORT 1 15 89 01 42.51569 -90.81939 LITTLE MAQUOKETA R. 2 WASTE STABILIZATION LAGOON 45 7.5 0.0008 0.0028 7714601 0068071 3/31/2022 SUNNYBROOK MHC LLC (HAVENPARK MANAGEMENT) 5 9 79 23 41.66818 -93.54608 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 AERATED LAGOON 365 61 0.008 0.04 7200802 0079596 2/28/2025 SUNRISE FARMS, INC. - LAOP 3 34 99 39 43.35139 -95.44333 LITTLE SIOUX R. 1 LAND APPLICATION 8456715 0079103 6/30/2025 Sunrise Feedlot, Inc. 3 17 97 45 43.22687 -96.19751 ROCK R. 1 OTHER 5200602 0067911 12/31/2025 SUNRISE MOBILE HOME 6 19 79 05 41.63631 -91.47925 IOWA R. BELOW NORTH LIBERTY 1 AERATED LAGOON 336 56 0.033 0.038 3100612 0073334 9/30/2021 SUPER 20 MOBILE HOME PARK 1 7 88 02 42.44528 -90.77528 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 ACTIVATED SLUDGE 225 37.5 0.019 0.019 7177001 0036129 2/28/2022 SUTHERLAND CITY OF STP 3 8 94 39 42.97147 -95.4848 LITTLE SIOUX R. 2 WASTE STABILIZATION LAGOON 713 119 0.07 0.2775 WL IL 1778001 0073903 2/28/2023 SWALEDALE, CITY STP 2 11 94 21 42.97284 -93.30052 WEST FORK CEDAR R. 1 WASTE STABILIZATION LAGOON 204 34 0.02 0.02 WL IL 5584001 0047813 5/31/2023 SWEA CITY CITY OF STP 2 20 99 29 43.37112 -94.30155 EAST FORK DES MOINES R. 1 WASTE STABILIZATION LAGOON 970 162 0.063 WL IL 5285001 0033774 3/31/2026 SWISHER CITY OF STP 6 8 81 07 41.8365 -91.6907 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 2 ACTIVATED SLUDGE 1934 323 0.17 0.32 WW II 3100600 0064009 9/30/2021 TABLE MOUND MHP 1 12 88 02 42.45432 -90.67781 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 ACTIVATED SLUDGE 446 74.4 0.037 0.041 3667001 0038440 4/30/2020 TABOR CITY OF STP 4 3 70 42 40.89177 -95.65266 WEST NISHNABOTNA R. 1 WASTE STABILIZATION LAGOON 1150 192 0.117 0.15 WL IL 8670002 0043681 11/30/2023 TAMA CITY OF STP 5 34 83 15 41.95559 -92.57306 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 ACTIVATED SLUDGE 4970 830 0.5 2 WW III 8670100 0000841 4/30/2021 TAMA PAPERBOARD, LLC dba GREIF 5 34 83 15 41.96147 -92.57992 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 ACTIVATED SLUDGE 10441 1775 0.27 0.27 8670000 0052527 2/28/2021 TAMA WATER TREATMENT PLANT (POWESHIEK WATER ASSOC) 5 10 82 15 41.93417 -92.57767 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 OTHER 6200110 0079553 2/19/2025 TASSEL RIDGE WINERY - LAOP 5 31 76 16 41.33559 -92.74412 DES MOINES R. BELOW WHITEBREAST CR. 1 LAND APPLICATION 389 65 0.0008 0.0016 5000801 0073181 5/31/2023 TEEN CHALLENGE OF THE MIDLANDS-STP 5 6 79 20 41.684 -93.22802 SKUNK R. ABOVE THE NORTH SKUNK 1 ACTIVATED SLUDGE 92 15 0.009 0.009 1479001 0033782 8/31/2021 TEMPLETON CITY OF STP 4 20 82 35 41.90431 -94.94143 EAST NISHNABOTNA R. 1 WASTE STABILIZATION LAGOON 491 82 0.1 WL IL 1479101 0053056 12/31/2023 TEMPLETON RYE DISTILLERY 4 16 82 35 41.9175 -94.93641 EAST NISHNABOTNA R. 1 ACTIVATED SLUDGE 32485 5425 0.026 0.026 1863496 0080420 8/31/2022 Tentinger Feedlot 3 22 93 41 42.85302 -95.6813 LITTLE SIOUX R. 1 OTHER 3500900 0062472 9/30/2021 TERRACE HILL SANITARY DISTRICT STP 2 15 92 20 42.78095 -93.19322 WEST FORK CEDAR R. 1 WASTE STABILIZATION LAGOON 150 25 0.0075 0.0135 WL IL 3080001 0036609 6/30/2023 TERRIL CITY OF STP 3 22 98 35 43.29222 -94.9569 LITTLE SIOUX R. 2 WASTE STABILIZATION LAGOON 462 77 0.0467 0.061 WL IL 8463065 0083992 5/31/2023 Terry Kooima Feedlot 3 31 97 46 43.18305 -96.31598 ROCK R. 1 OTHER 8200100 0001180 6/30/2022 TEXPAR ENERGY, LLC 6 24 77 02 41.4646 -90.67883 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 1 NO TREATMENT 240 40 0.024 6066472 0053196 7/31/2025 THANE FLUIT FEEDLOT 3 28 99 47 43.36282 -96.39014 ROCK R. 1 OTHER 8858001 0079936 6/30/2017 THAYER CITY OF STP 4 14 72 28 41.03315 -94.04577 THOMPSON R. 1 WASTE STABILIZATION LAGOON 73 12.2 0.0072 WL IL 9000106 0083453 10/31/2016 THE AMERICAN BOTTLING COMPANY 6 24 72 14 41.01844 -92.41269 DES MOINES R. BELOW WHITEBREAST CR. 1 OTHER 2424103 0079456 1/31/2022 THE ANDERSONS MARATHON HOLDINGS, LLC 4 21 83 39 41.98905 -95.39912 BOYER R. 1 OTHER 5715145 0082236 5/31/2024 THE EASTERN IOWA AIRPORT 1 30 82 05 41.89075 -91.70153 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 NO TREATMENT 3126803 0084115 6/30/2022 THE GRAND OPERA HOUSE 1 24 89 02 42.50111 -90.66697 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 OTHER 5625103 0001171 10/31/2025 THE SCOTTS COMPANY 6 7 67 04 40.62015 -91.37338 MISSISSIPPI R. NEAR FORT MADISON 1 NO TREATMENT 7700911 0066966 3/31/2025 THOMAS MITCHELL PARK 5 23 79 22 41.63872 -93.38103 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 WASTE STABILIZATION LAGOON 60 10 0.0031 0.0031 9585001 0068683 2/28/2023 THOMPSON CITY OF STP 2 26 99 25 43.36314 -93.75402 WINNEBAGO R. 1 WASTE STABILIZATION LAGOON 810 135 0.0742 WL IL 4680001 0058581 7/31/2021 THOR CITY OF STP 2 21 91 27 42.68715 -94.04355 BOONE R. 1 WASTE STABILIZATION LAGOON 290 49 0.0285 WL IL 1781001 0033201 1/31/2023 THORNTON CITY OF STP 2 19 94 21 42.93703 -93.36717 WEST FORK CEDAR R. 1 WASTE STABILIZATION LAGOON 718 120 0.0718 0.0718 WL IL 8800401 0074594 8/31/2019 THREE MILE LAKE CAMPGROUND-STP 4 32 73 29 41.08041 -94.21406 GRAND R. 1 WASTE STABILIZATION LAGOON 59 10 0.0045 0.0045 3671000 0052637 12/31/2022 THURMAN, CITY OF WATER WORKS 4 35 70 43 40.82247 -95.7547 KEG AND WAUBONSIE CR.S 1 NO TREATMENT 5288001 0036617 10/31/2025 TIFFIN CITY OF STP 6 28 80 07 41.70222 -91.65907 IOWA R. BELOW NORTH LIBERTY 2 ACTIVATED SLUDGE 11826 1975 0.62 0.975 WW III 2300300 0069116 1/14/2007 TIMBER CREEK ESTATES HOMEOWNER'S ASSOCIATION, INC 6 29 81 04 41.79222 -90.51889 WAPSIPINICON R. BELOW ANAMOSA 1 ACTIVATED SLUDGE 102 17 0.0097 0.01 5200303 0069108 7/31/2021 TIMBER TRAILS ESTATES HOMEOWNER'S ASSOCIATION 6 26 80 06 41.71111 -91.51222 IOWA R. BELOW NORTH LIBERTY 2 ADVANCED AERATED LAGOON 122 20.4 0.012 0.012

54 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Region Section Town Range Latitude Longitude FAC DES BASIN Design Treatment Type PE Design BOD ADW Flow AWW Opcert Opcert Number Flow Type Grade 6400601 0068659 9/30/2021 TIMBER WOLF VALLEY MHP 5 24 83 18 41.98301 -92.88905 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 AERATED LAGOON 314 52.4 0.02 0.02 5200311 0070076 6/30/2021 TIMBERLAKE HOMEOWNERS ASSOCIATION 6 17 81 07 41.82576 -91.67729 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 WASTE STABILIZATION LAGOON 77 13 0.0037 0.0075 2900606 0068250 3/31/2016 TIMBERLINE ESTATES, LTD 6 21 70 03 40.84799 -91.21654 FLINT R. 1 WASTE STABILIZATION LAGOON 515 86 0.0515 8080001 0074471 8/31/2022 TINGLEY, CITY-OF-STP-SIRWA 4 16 70 29 40.862 -94.19494 GRAND R. 1 WASTE STABILIZATION LAGOON 180 30 0.0177 WL IL 1689001 0032727 5/31/2021 TIPTON CITY OF STP (WEST) 6 1 80 03 41.75974 -91.13934 CEDAR R. BELOW CEDAR RAPIDS 1 AERATED LAGOON 2754 460 0.34 1.14 WL IL 5588001 0033375 10/31/2023 TITONKA CITY OF STP 2 4 97 27 43.24199 -94.03597 EAST FORK DES MOINES R. 1 WASTE STABILIZATION LAGOON 763 127.5 0.07 0.115 WL IL 8676001 0033103 6/30/2022 TOLEDO CITY OF STP 5 21 83 15 41.98227 -92.5916 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 2 ACTIVATED SLUDGE 3257 544 0.35 1.1 WW III 2383001 0076996 10/31/2023 TORONTO, CITY OF-STP 6 16 82 01 41.906 -90.85956 WAPSIPINICON R. BELOW ANAMOSA 1 SEPTIC TANK SAND FILTER 154 25.8 0.0152 0.0167 WW W 5715144 0079987 6/30/2026 TOWN CENTRE 1 28 83 07 41.97698 -91.66647 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 NO TREATMENT 6382001 0081647 8/31/2026 TRACY CITY OF STP (MAHASKA RURAL WATER SYSTEMS, INC.) 5 25 75 18 41.27683 -92.88869 DES MOINES R. BELOW WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 263 44 0.0191 0.0255 WL IL 8681001 0035033 1/31/2023 TRAER MUNICIPAL UTILITIES 5 2 85 14 42.19741 -92.45562 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 AERATED LAGOON 2000 334 0.2 0.608 WL IL 8456485 0080594 11/30/2025 Trans Ova Genetics 3 30 96 45 43.09884 -96.20803 BIG SIOUX R. BELOW THE ROCK 1 OTHER 7866002 0039977 9/30/2022 TREYNOR CITY OF STP (NORTHWEST) 4 1 74 42 41.23829 -95.61874 WEST NISHNABOTNA R. 1 AERATED LAGOON 2126 355 0.158 0.206 WL IL 5485500 0068390 10/31/2002 TRI-COUNTY COMMUNITY SCHOOL 6 23 77 13 41.45279 -92.33486 NORTH SKUNK R. 1 OTHER 401 67 0.0068 0.0068 9760300 0077780 5/31/2022 Triple U Ranch, LLC 3 2 89 42 42.56213 -95.77526 LITTLE SIOUX R. 1 OTHER 0975001 0033120 4/30/2026 TRIPOLI CITY OF STP 1 3 92 12 42.81023 -92.24971 WAPSIPINICON R. ABOVE ANAMOSA 2 AERATED LAGOON 1934 323 0.214 0.83 WL IL 9779803 0084034 10/31/2022 Trosper-Hoyt County Services Building 3 28 89 47 42.49945 -96.42497 MISSOURI R. FROM SIOUX CITY TO THE LITTLE SIOUX 1 NO TREATMENT 5786901 0041262 1/31/2024 TROY MILLS SANITARY DISTRICT 1 4 86 07 42.28713 -91.66607 WAPSIPINICON R. ABOVE ANAMOSA 1 WASTE STABILIZATION LAGOON 437 73 0.04 WL IL 1182001 0079782 3/2/2013 TRUESDALE, CITY OF STP 3 2 91 37 42.73144 -95.183 NORTH RACCOON R. 2 SEPTIC TANK SAND FILTER 96 16 0.0068 0.0091 WW W 6167001 0040991 8/31/2023 TRURO CITY OF STP 5 15 74 26 41.20717 -93.84153 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 AERATED LAGOON 898 150 0.067 0.111 WL IL 9600500 0067423 10/31/2021 TURKEY VALLEY COMMUNITY SCHOOL 1 28 96 10 43.10665 -92.04021 TURKEY R. 1 AERATED LAGOON 287 48 0.024 0.024 6309500 0067041 6/30/2016 TWIN CEDARS COMMUNITY SCHOOL 5 15 74 18 41.21602 -92.92505 DES MOINES R. BELOW WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 225 38 0.015 1300903 0070114 1/31/2025 TWIN LAKES UTILITIES STP 3 1 88 33 42.46627 -94.63739 NORTH RACCOON R. 1 WASTE STABILIZATION LAGOON 898 150 0.0616 0.0616 WL IL 3100300 0061298 3/31/2024 TWIN RIDGE SUBDIVISION 1 12 88 02 42.44164 -90.68212 MISSISSIPPI R. FROM DUBUQUE TO THE MAQUOKETA 1 WASTE STABILIZATION LAGOON 305 51 0.03 WL IL 5800100 0003361 4/30/2021 TYSON FRESH MEATS, INC. - COLUMBUS JUNCTION 6 18 75 04 41.29462 -91.3581 IOWA R. BELOW NORTH LIBERTY 1 ACTIVATED SLUDGE 186826 31200 1.8 2500100 0002089 12/31/2024 TYSON FRESH MEATS, INC. - PERRY 5 9 81 28 41.83841 -94.12587 NORTH RACCOON R. 2 ACTIVATED SLUDGE 80479 13440 1.4 1.4 1178105 0064998 6/30/2025 TYSON FRESH MEATS, INC. - STORM LAKE 3 24 90 37 42.63981 -95.18749 NORTH RACCOON R. 1 ACTIVATED SLUDGE 221557 37000 1.85 5200908 0084298 10/31/2023 U.S. ARMY - CORALVILLE DAM 6 22 80 06 41.71843 -91.52565 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 WASTE STABILIZATION LAGOON 54 9 0.0012 0.0116 7869001 0036986 12/31/2022 UNDERWOOD CITY OF STP 4 16 76 42 41.37843 -95.6817 PIGEON AND MOSQUITO CR.S 1 AERATED LAGOON 1485 248 0.113 0.164 WL IL 4291001 0034266 8/31/2020 UNION CITY OF STP 2 22 86 19 42.23884 -93.05493 IOWA R. ABOVE ALBION 1 WASTE STABILIZATION LAGOON 640 106 0.064 WL IL 0497001 0074373 12/14/2013 UNIONVILLE, CITY OF STP 5 34 70 16 40.81305 -92.68714 FOX AND WYACONDA R.S 1 WASTE STABILIZATION LAGOON 138 23 0.0112 WL IL 0800500 0067181 4/30/2016 UNITED COMMUNITY SCHOOL 5 4 83 25 42.02531 -93.77657 SKUNK R. ABOVE THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 104 17 0.0037 2900103 0063606 3/31/2019 UNITED STATES GYPSUM COMPANY 6 3 71 03 40.98464 -91.19123 FLINT R. 1 WASTE STABILIZATION LAGOON 22 3.7 0.0058 9400103 0062359 12/31/2015 UNITED STATES GYPSUM COMPANY 2 34 89 28 42.54113 -94.14847 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 AERATED LAGOON 90 15 0.009 0.013 5290002 0078930 4/30/2025 UNIVERSITY HEIGHTS, CITY OF MS4 6 16 79 06 41.65688 -91.55332 IOWA R. BELOW NORTH LIBERTY 1 NO TREATMENT 5225108 0069159 3/31/2022 UNIVERSITY OF IOWA COOLING TOWER BLOWDOWN 6 9 79 06 41.65876 -91.54298 IOWA R. BELOW NORTH LIBERTY 1 NO TREATMENT 5225006 0078182 4/30/2024 UNIVERSITY OF IOWA MS4 6 15 79 06 41.65408 -91.53671 IOWA R. BELOW NORTH LIBERTY 1 NO TREATMENT 5225101 0003077 5/31/2022 UNIVERSITY OF IOWA POWER PLANT 6 15 79 06 41.65668 -91.53952 IOWA R. BELOW NORTH LIBERTY 1 NO TREATMENT 5225105 0071919 6/30/2023 UNIVERSITY OF IOWA WATER TREATMENT PLANT 6 10 79 06 41.65854 -91.53999 IOWA R. BELOW NORTH LIBERTY 1 PRIMARY TREATMENT 0.046 0.046 0709501 0063941 4/30/2026 UNIVERSITY OF NORTHERN IOWA 1 23 89 14 42.51145 -92.46969 CEDAR R. ABOVE THE SHELLROCK R. 1 OTHER 0709004 0079952 8/31/2026 UNIVERSITY OF NORTHERN IOWA MS4 1 23 89 14 42.50963 -92.46656 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 NO TREATMENT 6290001 0047741 5/31/2025 UNIVERSITY PARK CITY OF STP 5 20 74 15 41.28673 -92.61306 SKUNK R. ABOVE THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 728 122 0.0645 WL IL 1200107 0072231 6/30/2019 UNVERFERTH MFG. CO., INC. 2 32 91 15 42.64757 -92.64275 CEDAR R. ABOVE THE SHELLROCK R. 2 WASTE STABILIZATION LAGOON 49 8.1 0.0041 0.0051 0680001 0059072 2/28/2026 URBANA CITY OF STP 1 34 86 09 42.21742 -91.88432 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 2 ACTIVATED SLUDGE 3772 630 0.28 0.48 WW III 7780002 0078620 4/30/2024 URBANDALE, CITY OF MS4 5 27 79 25 41.6275 -93.73678 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 NO TREATMENT 6762001 0043010 1/31/2022 UTE CITY OF STP 4 34 84 42 42.04308 -95.71083 SOLDIER R. 1 WASTE STABILIZATION LAGOON 587 98 0.0587 WL IL 2452001 0032654 4/30/2021 VAIL CITY OF STP 4 30 84 37 42.05528 -95.20484 BOYER R. 2 WASTE STABILIZATION LAGOON 599 100 0.028 0.05 WL IL 5500112 0077194 3/31/2024 VALERO RENEWABLE FUELS CO, LLC - dba VALERO LAKOTA PLANT 2 22 99 28 43.38393 -94.14813 BLUE EARTH R. 1 OTHER 0.076 0.09 9433115 0079227 5/31/2015 VALERO RENEWABLE FUELS COMPANY, LLC 2 20 89 29 42.51533 -94.30482 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 NO TREATMENT 7100104 0080829 2/28/2018 VALERO RENEWABLE FUELS COMPANY, LLC 3 31 97 39 43.17417 -95.50089 LITTLE SIOUX R. 1 NO TREATMENT 1100108 0080209 2/28/2025 VALERO RENEWABLE FUELS CO., LLC - dba VALERO ALBERT CITY PLANT 3 23 92 35 42.77768 -94.94339 NORTH RACCOON R. 1 OTHER 3400109 0080403 10/31/2021 VALERO RENEWABLE FUELS CO., LLC dba VALERO CHARLES CITY PLANT 2 33 96 16 43.09834 -92.02592 CEDAR R. ABOVE THE SHELLROCK R. 1 NO TREATMENT 8456476 0077682 9/30/2021 Valley View Feedlots, Inc. 3 23 94 48 42.94491 -96.48999 BIG SIOUX R. BELOW THE ROCK 1 OTHER 9000602 0069663 2/29/2024 VALLEY VILLAGE MOBILE HOME COURT 6 5 71 13 40.98755 -92.38159 DES MOINES R. BELOW WHITEBREAST CR. 1 ACTIVATED SLUDGE 359 60 0.036 0.036 8456760 0079880 11/30/2022 Van Beek Feedlot 3 4 97 47 43.25814 -96.40793 ROCK R. 1 OTHER 8456294 0079464 1/31/2026 Van Berkel Farms - Home Site 3 31 96 46 43.09262 -96.31456 BIG SIOUX R. BELOW THE ROCK 1 OTHER 8458505 0083089 10/31/2021 Van Berkel Farms - Kooi Site 3 20 96 46 43.11581 -96.29532 BIG SIOUX R. ABOVE THE ROCK 1 OTHER 4000104 0070033 8/31/2022 VAN DIEST SUPPLY COMPANY 2 4 88 26 42.46807 -93.88962 BOONE R. 2 WASTE STABILIZATION LAGOON 275 45 0.019 0.037 8457166 0052395 7/31/2026 Van Driessen Farms, Inc. 3 21 95 47 43.04006 -96.40562 BIG SIOUX R. BELOW THE ROCK 1 LAND APPLICATION 3300100 0000809 1/31/2026 VAN ELDEREN INC. 1 22 91 07 42.68742 -91.64969 MAQUOKETA R. 1 AERATED LAGOON 41198 6880 0.301 0.602 8456950 0079529 2/29/2024 Van Essen Feedlot 3 2 96 46 43.15759 -96.25355 ROCK R. 1 OTHER 8457021 0082848 6/30/2025 Van Holland Farm, Inc 3 16 96 46 43.13471 -96.2761 ROCK R. 1 OTHER 0685001 0033341 1/31/2023 VAN HORNE CITY OF STP 1 11 83 11 42.01027 -92.09972 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 ACTIVATED SLUDGE 1221 204 0.12 0.387 WW II 2570001 0036021 6/30/2022 VAN METER CITY OF STP 5 22 78 27 41.53272 -93.95037 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 WASTE STABILIZATION LAGOON 1347 225 0.1518 WL IL 3956251 0078590 10/31/2022 Van Meter Feedyard, LLC 4 32 80 33 41.68867 -94.71486 MIDDLE AND SOUTH RACCOON R.S 1 OTHER 8457694 0080659 1/31/2023 Van Voorst Cattle, Inc. 3 22 96 45 43.1279 -96.14972 FLOYD R. 1 OTHER 8459625 0083712 10/31/2022 Van Voorst Dairy 3 1 95 47 43.07697 -96.33383 BIG SIOUX R. BELOW THE ROCK 1 OTHER 2783001 0066354 8/31/2024 VAN WERT CITY OF STP 5 18 70 25 40.86841 -93.7899 THOMPSON R. 1 WASTE STABILIZATION LAGOON 305 51 0.024 0.03 WL IL 8461718 0083381 5/31/2024 Van Wyhe Feedlot 3 13 95 47 43.05474 -96.33602 BIG SIOUX R. BELOW THE ROCK 1 OTHER 7257127 0079197 3/31/2022 Vander Lee Feedlot 3 15 98 40 43.31468 -95.55467 LITTLE SIOUX R. 1 OTHER 8463232 0082899 12/31/2025 Vander Waal Brothers, Inc. 3 2 97 45 43.25114 -96.11952 FLOYD R. 1 OTHER 7642000 0051122 4/30/2022 VARINA, CITY OF WTP 3 1 90 31 42.65832 -94.89961 NORTH RACCOON R. 1 NO TREATMENT 6256457 0077798 1/31/2023 Ver Steegh Brothers Farm Partnership 5 17 74 16 41.20484 -92.73649 DES MOINES R. BELOW WHITEBREAST CR. 1 OTHER 8562102 0053269 5/31/2026 VERBIO NEVADA, LLC 5 3 83 23 42.02527 -93.51796 SKUNK R. ABOVE THE NORTH SKUNK 1 NO TREATMENT 8456496 0080608 12/31/2022 Vermeer & Sons Farms-Feedlot 3 22 95 45 43.03833 -96.15246 FLOYD R. 1 OTHER 4875001 0058190 1/31/2023 VICTOR CITY OF STP 6 18 80 12 41.73336 -92.2948 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 ACTIVATED SLUDGE 1497 250 0.09 0.2 WW II 0709109 0078140 2/29/2024 VIKING PUMP, INC. - VIKING ROAD FACILITY 1 25 89 14 42.48441 -92.45236 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 NO TREATMENT 6985001 0032549 2/28/2023 VILLISCA CITY OF STP 4 27 71 36 40.91992 -94.97268 NODAWAY R. 2 ADVANCED AERATED LAGOON 3162 528 0.303 0.774 WL II 9486001 0032930 1/31/2022 VINCENT CITY OF STP 2 27 90 27 42.58649 -94.01379 BOONE R. 1 WASTE STABILIZATION LAGOON 323 54 0.0323 WL IL 0688001 0035891 6/30/2025 VINTON CITY OF STP 1 28 85 10 42.14586 -92.01229 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 ACTIVATED SLUDGE 12982 2168 1.48 1.79 WW III 2285001 0062952 7/31/2023 VOLGA CITY OF STP 1 10 92 06 42.8014 -91.52795 TURKEY R. 1 WASTE STABILIZATION LAGOON 365 61 0.034 WL IL 3371001 0032492 3/31/2023 WADENA, CITY OF STP 1 27 93 07 42.83914 -91.64886 TURKEY R. 1 WASTE STABILIZATION LAGOON 265 44.2 0.0437 WL IL 7085001 0061891 11/30/2024 WALCOTT CITY OF STP (SOUTH) 6 1 78 01 41.59113 -90.78848 CEDAR R. BELOW CEDAR RAPIDS 2 ACTIVATED SLUDGE 5880 982 0.488 1.308 WW III 0690001 0062545 4/30/2024 WALFORD CITY OF STP 1 36 82 09 41.8736 -91.83584 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 2 ACTIVATED SLUDGE 3725 622 0.28 0.43 WW III 5792001 0059081 9/30/2022 WALKER CITY OF STP 1 9 86 08 42.27939 -91.77431 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 2 ADVANCED AERATED LAGOON 874 146 0.055 0.222 WL II 8166001 0033065 5/31/2022 WALL LAKE CITY OF STP 3 13 86 37 42.26375 -95.09279 BOYER R. 1 WASTE STABILIZATION LAGOON 1159 193.6 0.082 0.107 WL IL 3290001 0062812 3/31/2023 WALLINGFORD CITY OF STP 3 7 98 33 43.31859 -94.78693 DES MOINES R. ABOVE THE EAST FORK DES MOINES 1 WASTE STABILIZATION LAGOON 305 51 0.03 WL IL 7872001 0042986 4/29/2006 WALNUT CITY OF STP 4 15 77 38 41.4734 -95.21094 WEST NISHNABOTNA R. 1 AERATED LAGOON 1407 235 0.108 0.234 WL IL 7820101 0004308 7/31/2026 WALTER SCOTT JR. ENERGY CENTER 4 30 74 43 41.18043 -95.83903 PIGEON AND MOSQUITO CR.S 1 OTHER

55 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Region Section Town Range Latitude Longitude FAC DES BASIN Design Treatment Type PE Design BOD ADW Flow AWW Opcert Opcert Number Flow Type Grade 2200105 0052856 1/11/2023 WALZ ENERGY FEEDLOT AND BIOGAS PROJECT 1 30 95 04 43.01908 -91.35837 TURKEY R. 1 NO TREATMENT 5879001 0047961 8/31/2022 WAPELLO CITY OF STP 6 35 74 03 41.1736 -91.17777 IOWA R. BELOW NORTH LIBERTY 2 AERATED LAGOON 2976 497 0.18 1.06 WL IL 5400800 0082511 2/28/2015 WAPELLO RWA WATER TREATMENT PLANT 6 27 75 13 41.27065 -92.34445 SKUNK R. ABOVE THE NORTH SKUNK 1 OTHER 2300401 0080799 11/30/2024 WAPSI CENTER CAMP DORMITORY 6 1 80 01 41.76418 -90.79664 WAPSIPINICON R. BELOW ANAMOSA 1 SEPTIC TANK SAND FILTER 51 8.5 0.0017 0.0017 1037101 0060607 2/28/2022 WAPSIE VALLEY CREAMERY, INC. 1 34 89 09 42.47723 -91.89172 WAPSIPINICON R. ABOVE ANAMOSA 1 NO TREATMENT 7820113 0077178 1/31/2023 WARREN DISTRIBUTION, INC.-STORM WATER DISCHARGE 4 4 74 44 41.23459 -95.90613 PIGEON AND MOSQUITO CR.S 1 NO TREATMENT 0990105 0071714 11/30/2016 WARTBURG COLLEGE 1 3 91 14 42.72721 -92.48247 CEDAR R. ABOVE THE SHELLROCK R. 1 NO TREATMENT 0700904 0074241 10/31/2023 WASHBURN AREA-STP BLACK HAWK COUNTY 1 19 88 12 42.41774 -92.28055 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 WASTE STABILIZATION LAGOON 1407 235 0.1175 0.1175 WL IL 9271001 0032433 2/28/2021 WASHINGTON CITY OF STP 6 19 75 07 41.28215 -91.70711 SKUNK R. BELOW THE NORTH SKUNK 2 SEQUENCING BATCH REACTOR 19437 3246 1.6 6.24 WW IV 3400501 0080225 3/31/2022 WASHINGTON ELEMENTARY SCHOOL 2 6 95 15 43.07896 -92.6712 CEDAR R. ABOVE THE SHELLROCK R. 1 NO TREATMENT 1880001 0043001 5/31/2024 WASHTA CITY OF STP 3 29 90 41 42.58271 -95.71255 LITTLE SIOUX R. 1 WASTE STABILIZATION LAGOON 482 81 0.045 WL IL 9200302 0077089 12/31/2025 WATER'S EDGE SUBDIVISION - WWTF 6 33 76 07 41.33814 -91.66238 SKUNK R. BELOW THE NORTH SKUNK 1 SEPTIC TANK SAND FILTER 100 17 0.0099 0.0099 0790001 0042650 5/31/2026 WATERLOO CITY OF STP 1 31 89 12 42.47177 -92.30672 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 ACTIVATED SLUDGE 526946 88000 18 34.8 WW IV 0700903 0072290 4/30/2025 WATERLOO RESIDENTIAL CORRECTION FACILITY 1 25 89 13 42.49786 -92.33236 CEDAR R. ABOVE THE SHELLROCK R. 1 NO TREATMENT 0.1152 0790002 0078301 4/30/2024 WATERLOO, CITY OF MS4 1 26 89 13 42.49089 -92.34749 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 NO TREATMENT 0397001 0063517 8/31/2022 WATERVILLE CITY OF STP 1 15 97 04 43.21811 -91.29581 YELLOW R. AND PAINT CR. 1 WASTE STABILIZATION LAGOON 234 39 0.021 0.021 WL IL 0692001 0079871 9/30/2025 WATKINS, COMMUNITY OF 1 27 82 10 41.89082 -91.99172 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 SEPTIC TANK SAND FILTER 134 22.3 0.008 0.013 WW W 3375001 0071048 4/30/2026 WAUCOMA CITY OF STP 1 16 95 10 43.0476 -92.02777 TURKEY R. 2 AERATED LAGOON 347 58 0.0308 0.0308 WL IL 2573002 0078875 8/31/2024 WAUKEE, CITY OF MS4 5 5 78 26 41.60031 -93.88518 NORTH RACCOON R. 1 NO TREATMENT 0398001 0033081 9/30/2021 WAUKON CITY OF STP 1 31 98 05 43.26024 -91.47117 YELLOW R. AND PAINT CR. 1 TRICKLING FILTER 9287 1624 0.79 1.652 WW III 0990001 0033197 7/31/2025 WAVERLY CITY OF STP 1 11 91 14 42.71115 -92.4612 CEDAR R. ABOVE THE SHELLROCK R. 1 TRICKLING FILTER 16120 2692 0.968 2.33 WW III 0990106 0080268 8/31/2023 WAVERLY MUNICIPAL FIRE DEPARTMENT 1 2 91 14 42.72475 -92.47187 CEDAR R. ABOVE THE SHELLROCK R. 1 NO TREATMENT 4490001 0047953 1/31/2022 WAYLAND, CITY OF STP 6 9 73 07 41.14136 -91.6589 SKUNK R. BELOW THE NORTH SKUNK 1 AERATED LAGOON 1168 195 0.138 0.31 WL IL 8822101 0077313 2/28/2026 WDC ACQUISITION, LLC dba WELLMAN 4 7 72 30 41.05046 -94.34003 PLATTE R. 1 NO TREATMENT 2178001 0083666 5/31/2023 WEBB, CITY OF STP 3 18 94 35 42.95935 -95.01971 LITTLE SIOUX R. 1 WASTE STABILIZATION LAGOON 193 32.3 0.0147 0.019 WL IL 4063002 0066281 12/31/2021 WEBSTER CITY MUNICIPAL BLDG. 2 1 88 26 42.46922 -93.81636 BOONE R. 1 NO TREATMENT 4063001 0036625 2/28/2021 WEBSTER CITY, CITY OF STP 2 6 88 25 42.45793 -93.80778 BOONE R. 1 ROTATING BIOLOGICAL 24850 4150 1.5 3.3 WW III 5491001 0078719 9/21/2014 WEBSTER, CITY OF STP 6 30 77 11 41.44817 -92.17096 IOWA R. BELOW NORTH LIBERTY 1 WASTE STABILIZATION LAGOON 126 21 0.012 0.012 WL IL 7500108 0076988 7/31/2026 WEINRICH TRUCK LINE, INC. - LAOP 3 10 90 46 42.62963 -96.27227 FLOYD R. 1 LAND APPLICATION 0.008 2788001 0069167 5/31/2022 WELDON CITY OF STP 5 4 70 25 40.88963 -93.72954 THOMPSON R. 1 WASTE STABILIZATION LAGOON 293 49 0.0212 WL IL 7356421 0080713 8/31/2021 Wellhausen Feedlots 4 18 68 37 40.70964 -95.13343 NODAWAY R. 1 OTHER 9276001 0032301 6/30/2026 WELLMAN CITY OF STP 6 24 77 09 41.46391 -91.82955 IOWA R. BELOW NORTH LIBERTY 1 ACTIVATED SLUDGE 1772 296 0.275 0.45 WW II 7540104 0073075 5/31/2025 WELLS ENTERPRISES, INC. NORTH ICE CREAM PLANT 3 16 92 45 42.79137 -96.16385 FLOYD R. 1 NO TREATMENT 7540105 0073083 7/31/2026 WELLS' ENTERPRISES, INC.(SOUTH ICE CREAM PLANT) 3 20 92 45 42.77346 -96.18223 FLOYD R. 1 NO TREATMENT 3890001 0042803 11/30/2022 WELLSBURG CITY OF STP 2 15 88 18 42.43135 -92.94244 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 AERATED LAGOON 850 142 0.099 0.19 WL IL 2391001 0071196 1/31/2024 WELTON CITY OF STP 6 15 82 03 41.9025 -90.59737 WAPSIPINICON R. BELOW ANAMOSA 1 SEPTIC TANK SAND FILTER 443 74 0.033 0.033 WW W 1456300 0077810 3/31/2022 Wendl Feedlot 4 33 83 34 41.95519 -94.82245 MIDDLE AND SOUTH RACCOON R.S 1 OTHER 2300103 0080951 4/24/2013 WENDLING QUARRIES - BEHR WASH BAY 6 2 81 03 41.85518 -90.58211 WAPSIPINICON R. BELOW ANAMOSA 1 OTHER 7000107 0080926 5/31/2024 WENDLING QUARRIES - MOSCOW QUARRY 6 8 78 02 41.57469 -91.10245 CEDAR R. BELOW CEDAR RAPIDS 1 OTHER 5700117 0080934 5/31/2025 WENDLING QUARRIES - ROBINS QUARRY 1 16 84 07 42.08248 -91.65838 CEDAR R. BELOW THE SHELLROCK R. THRU CEDAR RAPIDS 1 OTHER 5592001 0033472 8/31/2017 WESLEY CITY OF STP 2 35 96 27 43.08985 -94.00968 BOONE R. 1 WASTE STABILIZATION LAGOON 641 107 0.063 WL IL 9100401 0075523 8/31/2022 WESLEY WOODS CAMP & RETREAT CENTER 5 22 75 24 41.29005 -93.59972 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 120 20 0.0029 7470001 0036994 10/31/2024 WEST BEND CITY OF STP 3 24 94 31 42.94896 -94.46249 DES MOINES R. ABOVE THE EAST FORK DES MOINES 1 WASTE STABILIZATION LAGOON 1090 182 0.141 0.25 WL IL 1694001 0032859 8/31/2022 WEST BRANCH CITY OF STP 6 8 79 04 41.65684 -91.3332 CEDAR R. BELOW CEDAR RAPIDS 1 AERATED LAGOON 3257 544 0.242 0.792 WL IL 1600600 0067946 5/21/2014 WEST BRANCH MOBILE HOME 6 5 79 04 41.68132 -91.34513 CEDAR R. BELOW CEDAR RAPIDS 1 WASTE STABILIZATION LAGOON 635 108 0.0318 2985001 0033669 7/31/2026 WEST BURLINGTON CITY OF STP 6 2 69 03 40.80326 -91.17996 FLINT R. 3 ACTIVATED SLUDGE 6126 1023 0.63 1.85 WW III 1400900 0052484 2/28/2022 WEST CENTRAL IOWA RURAL WATER ASSOCIATION 4 32 82 36 WEST NISHNABOTNA R. 1 OTHER 9281001 0072460 8/31/2019 WEST CHESTER CITY OF STP 6 6 75 08 41.33616 -91.82046 SKUNK R. BELOW THE NORTH SKUNK 1 WASTE STABILIZATION LAGOON 180 30 0.017 0.017 WL IL 7785002 0078778 3/31/2025 WEST DES MOINES, CITY OF MS4 5 9 78 25 41.57793 -93.74214 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 NO TREATMENT 1856845 0080616 9/30/2022 West Fork Feedlot (formerly Pat Staab Feedlot) 3 29 91 42 42.66691 -95.82016 WEST FORK LITTLE SIOUX R. 1 OTHER 8200906 0066974 11/30/2024 WEST LAKE PARK 6 36 78 02 41.52281 -90.6719 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 2 ACTIVATED SLUDGE 210 35 0.01 0.02 7073001 0031691 1/31/2024 WEST LIBERTY CITY OF STP 6 13 78 04 41.56668 -91.2517 CEDAR R. BELOW CEDAR RAPIDS 1 ACTIVATED SLUDGE 24108 4011 1.38 2.21 WW IV 5691001 0043109 7/31/2026 WEST POINT CITY OF STP 6 4 68 05 40.71809 -91.44664 MISSISSIPPI R. NEAR FORT MADISON 2 ADVANCED AERATED LAGOON 1593 266 0.153 0.314 WL II 3383003 0035378 2/29/2020 WEST UNION CITY OF STP 1 22 94 08 42.94535 -91.78211 TURKEY R. 1 TRICKLING FILTER 7449 1244 0.5 0.85 WW III 4880901 0077372 12/31/2021 WEST/HIGH AMANA SANITARY DISTRICT 6 24 81 10 41.80503 -91.95838 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 AERATED LAGOON 269 45 0.0265 0.1489 WL IL 3100118 0081175 10/29/2012 WESTERN DUBUQUE BIODIESEL, LLC 1 12 88 02 42.45099 -91.02109 LITTLE MAQUOKETA R. 1 NO TREATMENT 8100112 0079855 11/30/2024 WESTERN IOWA ENERGY, LLC 3 13 86 37 42.25635 -95.09224 BOYER R. 1 NO TREATMENT 7589001 0042960 4/30/2024 WESTFIELD CITY OF STP 3 27 92 49 42.754 -96.61731 BIG SIOUX R. BELOW THE ROCK 1 WASTE STABILIZATION LAGOON 234 39 0.0176 WL IL 3379001 0075353 4/30/2025 WESTGATE, CITY OF-STP 1 14 92 10 42.77772 -91.99725 WAPSIPINICON R. ABOVE ANAMOSA 1 WASTE STABILIZATION LAGOON 210 35 0.021 0.021 WL IL 2458001 0040274 6/30/2020 WESTSIDE CITY OF STP 4 13 84 37 42.07973 -95.11081 BOYER R. 1 WASTE STABILIZATION LAGOON 386 65 0.0375 0.0417 WL IL 9700501 0070289 9/30/2022 WESTWOOD COMMUNITY SCHOOL 3 29 86 46 42.22898 -96.2179 LITTLE SIOUX R. 1 NO TREATMENT 5493001 0032468 4/29/2006 WHAT CHEER CITY OF STP 6 10 76 13 41.39702 -92.34691 NORTH SKUNK R. 1 AERATED LAGOON 898 150 0.086 0.32 WL IL 2394001 0058912 9/30/2024 WHEATLAND CITY OF STP 6 15 81 01 41.82581 -90.84012 WAPSIPINICON R. BELOW ANAMOSA 2 TRICKLING FILTER 904 151 0.104 0.277 WW II 4802102 0000744 3/31/2025 WHIRLPOOL CORP - AMANA APPLIANCE DIVISION 6 28 81 09 41.79073 -91.89953 IOWA R. BELOW ALBION AND ABOVE NORTH LIBERTY 1 ACTIVATED SLUDGE 4102 685 0.2 0.3 6769001 0032719 8/31/2021 WHITING CITY OF STP 4 2 84 46 42.12746 -96.16227 MISSOURI R. FROM SIOUX CITY TO THE LITTLE SIOUX 1 WASTE STABILIZATION LAGOON 1084 181 0.12 0.21 WL IL 5595001 0033430 9/30/2024 WHITTEMORE CITY OF STP 2 8 95 30 43.05709 -94.41277 EAST FORK DES MOINES R. 1 WASTE STABILIZATION LAGOON 1102 184 0.095 0.16 WL IL 4293001 0062448 9/30/2018 WHITTEN CITY OF STP (IRUA) 2 13 86 19 42.25273 -93.00874 IOWA R. ABOVE ALBION 1 WASTE STABILIZATION LAGOON 305 51 0.0276 WL IL 1456552 0080250 4/30/2022 Wiederin Feedlot 4 30 85 34 42.14689 -94.85876 BOYER R. 1 OTHER 8222604 0064432 7/31/2026 WILD ROSE MOBILE HOME PARK 6 8 78 03 41.57146 -90.64343 MISSISSIPPI R. FROM THE WAPSIPINICON TO THE IOWA 1 ACTIVATED SLUDGE 76 13 0.006 0.0075 6100401 0048096 8/31/2026 Wildwood Hills Ranch 5 20 75 26 41.28216 -93.86659 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 101 16.8 0.0028 4070001 0058483 5/31/2024 WILLIAMS CITY OF STP 2 26 89 23 42.48564 -93.52854 IOWA R. ABOVE ALBION 1 WASTE STABILIZATION LAGOON 772 129 0.065 0.11 WL IL 4884001 0033880 4/30/2024 WILLIAMSBURG CITY OF STP 6 10 79 10 41.66494 -91.99937 IOWA R. BELOW NORTH LIBERTY 1 ACTIVATED SLUDGE 3503 585 0.44 0.585 WW III 5946001 0076449 9/30/2016 WILLIAMSON CITY OF (RATHBUN REGIONAL WATER ASSN) 5 34 73 21 41.08304 -93.26413 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 180 30 0.0167 WL IL 2537102 0079162 10/31/2024 WILLIS AUTOMOTIVE, LLC – OASIS LASER WASH 5 12 80 26 41.75908 -93.82797 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 OTHER 0.0122 9100601 0067903 12/31/2021 WILSHIRE MOBILE HOME PARK 5 9 77 24 41.48653 -93.62199 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 126 21 0.0123 7078001 0032921 11/30/2024 WILTON CITY OF STP 6 6 78 01 41.58287 -91.01222 CEDAR R. BELOW CEDAR RAPIDS 2 ACTIVATED SLUDGE 8611 1438 0.656 0.78 WW III 2300602 0068497 1/31/2021 WINDING BROOK MOBILE HOME PARK STP 6 3 81 03 41.85617 -90.58766 WAPSIPINICON R. BELOW ANAMOSA 1 WASTE STABILIZATION LAGOON 92 15.3 0.0076 7791001 0078921 1/31/2022 WINDSOR HEIGHTS, CITY OF MS4 5 2 78 25 41.5993 -93.70856 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 NO TREATMENT 4493001 0033367 2/28/2022 WINFIELD CITY OF STP 6 16 73 05 41.12153 -91.43025 SKUNK R. BELOW THE NORTH SKUNK 1 AERATED LAGOON 1353 226 0.135 0.33 WL IL 4100112 0067229 6/30/2025 WINNEBAGO INDUSTRIES, INC. 2 2 97 24 43.24927 -93.64371 WINNEBAGO R. 1 WASTE STABILIZATION LAGOON 749 8456342 0081191 9/30/2022 Winterfeld Cattle Feedlot 3 32 96 46 43.09328 -96.30932 BIG SIOUX R. BELOW THE ROCK 1 OTHER 6171001 0034291 12/31/2024 WINTERSET CITY OF STP 5 5 75 27 41.32145 -93.98438 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 TRICKLING FILTER 4790 800 0.5 1.75 WW II 6100801 0072681 7/31/2024 WINTERSET EGG FARM - LAOP 5 34 74 28 41.33325 -94.05962 NORTH RACCOON R. 1 LAND APPLICATION 6171000 0079961 10/31/2023 WINTERSET WATER TREATMENT PLANT 5 20 76 27 41.36378 -93.99265 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 OTHER 1093001 0032808 5/31/2025 WINTHROP CITY OF STP 1 2 88 08 42.46482 -91.73911 WAPSIPINICON R. ABOVE ANAMOSA 2 ADVANCED AERATED LAGOON 1713 286 0.1 0.46 WL II 8462847 0084301 9/30/2025 Witt Brothers Feedlot 3 32 95 47 43.00833 -96.43093 BIG SIOUX R. BELOW THE ROCK 1 OTHER 4170001 0084174 6/30/2023 WODEN CITY OF STP 2 3 97 26 43.24351 -93.90167 EAST FORK DES MOINES R. 1 WASTE STABILIZATION LAGOON 247 41.3 0.024 0.0278 WL IL 4388001 0032387 10/31/2023 WOODBINE CITY OF STP 4 23 80 42 41.7236 -95.71097 BOYER R. 1 WASTE STABILIZATION LAGOON 1862 311 0.152 WL IL 2052001 0075256 1/31/2023 WOODBURN CITY OF (SIRWA) 5 26 72 24 41.00832 -93.57635 DES MOINES R. BELOW THE RACCOON TO WHITEBREAST CR. 1 WASTE STABILIZATION LAGOON 244 41 0.014 0.024 WL IL

56 Active NPDES and Operation Permits in Iowa as of 9/1/2021

Permit # EPA ID Expire Date Facility Name Region Section Town Range Latitude Longitude FAC DES BASIN Design Treatment Type PE Design BOD ADW Flow AWW Opcert Opcert Number Flow Type Grade 5800601 0052740 7/31/2022 WOODLAND MOBILE HOME PARK 6 21 74 03 41.19337 -91.2079 IOWA R. BELOW NORTH LIBERTY 1 ACTIVATED SLUDGE 239 40 0.015 0.015 2576001 0057517 6/30/2025 WOODWARD CITY OF STP 5 12 81 27 41.84956 -93.93584 DES MOINES R. BELOW THE EAST FORK DES MOINES 2 ADVANCED AERATED LAGOON 2084 348 0.186 0.692 WL II 0800901 0063916 6/30/2024 WOODWARD RESOURCE CENTER 5 31 82 26 41.87731 -93.92124 DES MOINES R. BELOW THE EAST FORK DES MOINES 2 WASTE STABILIZATION LAGOON 2132 356 0.1021 0.15 0800904 0083127 10/31/2021 WOODWARD RESOURCE CENTER WTP 5 31 82 26 41.87731 -93.92124 DES MOINES R. BELOW THE EAST FORK DES MOINES 1 OTHER 4071001 0061310 11/30/2021 WOOLSTOCK CITY OF STP 2 1 89 25 42.55451 -93.86285 BOONE R. 1 WASTE STABILIZATION LAGOON 325 54.23 0.0312 WL IL 3189001 0058548 5/31/2022 WORTHINGTON CITY OF STP 1 31 88 02 42.39526 -91.12641 MAQUOKETA R. 1 ACTIVATED SLUDGE 563 94 0.05 0.165 WW II 6061304 0077640 2/29/2024 Wynia Cattle (formerJansma Cattle) 3 7 99 45 43.41883 -96.2009 ROCK R. 1 OTHER 5392001 0032646 10/31/2021 WYOMING, CITY OF STP 1 29 84 01 42.05534 -90.99073 MAQUOKETA R. 2 ADVANCED AERATED LAGOON 521 87 0.104 0.434 WL II 0300900 0065986 1/31/2016 YELLOW RIVER/LUSTER HEIGHTS CAMP 1 10 96 03 43.13917 -91.18388 UPPER IOWA R. 1 WASTE STABILIZATION LAGOON 126 21 0.0125 5700401 0070050 2/28/2023 YMCA CAMP WAPSIE STP 1 17 86 06 42.25648 -91.57546 WAPSIPINICON R. ABOVE ANAMOSA 2 TRICKLING FILTER 305 51 0.0225 0.0225 8590001 0058513 1/31/2023 ZEARING CITY OF STP 5 22 85 21 42.15956 -93.2895 IOWA R. ABOVE ALBION 1 WASTE STABILIZATION LAGOON 1437 240 0.12 WL IL 3405103 0072150 2/28/2025 ZOETIS, LLC 2 7 95 15 43.05303 -92.6168 CEDAR R. ABOVE THE SHELLROCK R. 1 NO TREATMENT 4998001 0074209 3/31/2023 ZWINGLE, CITY OF STP 1 2 86 02 42.29472 -90.69111 MAQUOKETA R. 1 SEPTIC TANK SAND FILTER 122 20.4 0.012 0.012 WW W 7256367 0083984 8/31/2023 Zylstra Feedlot (AT) 3 35 99 42 43.34618 -95.77602 ROCK R. 1 OTHER

57 Column Name Definition Permit # Iowa NPDES or operation permit facility number EPA ID U.S. EPA NPDES permit number Expire Date Expiration date of the current permit Facility Name Name of the facility Facility Address Facility location address (note: not necessarily a mailing address) Facility City City where the facility is located Facility State State where the facility is located Facility Zip Zip code of the facility location Facility Phone Phone number of the facility Permit Type Type of Iowa NPDES or operation permit Class Minor or Major facility (Major = any municipal facility with an influent flow of greater than 1 million gallons per day or industrial facility that is categorized as such) SIC Code Standard Industrial Classification code Owner Name Name of the facility owner Owner Address1 Address of the facility owner Owner Address2 Extended address of the facility owner Owner City City of the facility owner Owner State State of the facility owner Owner Zip Zip code of the facility owner Owner Phone Phone number of the facility owner County County where the facility is located Region Iowa DNR region where the facility is located Section Section where the facility is located Town Township where the facility is located Range Range where the facility is located Latitude Latitude of the facility Longitude Longitude of the facility FAC DES BASIN Iowa River Basin where the facility is located Design # Design number of the facility (this is a database value used by Iowa DNR) Treatment Type Mainwastewater treatment type used at the facility PE Design Population Equivalent of the facility Design BOD Design Biochemical Oxygen Demand of the facility ADW Flow Average Dry Weather flow of the facility AWW Flow Average Wet Weather flow of the facility Opcert Type Type of Operator Certification required to operate the facility Opcert Grade Grade of Operator required at the facility