1 Appendix B-1. List of Impaired Waters for (EPA Category 5)

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID CT1001- 00-1- Wyassup Lake (North Stonington) Fish Consumption MERCURY L1_01

CT2000- Fenger Brook (Waterford)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 30_01

CT2101- Wheeler Brook (Stonington)-01 ESCHERICHIA COLI (E. COLI) 01_01 Recreation CT2101- Donahue Brook (Stonington)-01 ESCHERICHIA COLI (E. COLI) 03_01 Recreation CT2202- Latimer Brook (East Lyme)-01 Recreation ESCHERICHIA COLI (E. COLI) 00_01 2 CT2204- Stony Brook (Waterford)-01 Recreation ESCHERICHIA COLI (E. COLI) 03_01 CT2205- 02-1- Dodge Pond (East Lyme) Fish Consumption MERCURY L1_01 CT3002- 02-1- Amos Lake (Preston) Recreation ALGAE L2_01 CT3002- 02-1- Amos Lake (Preston) Recreation CHLOROPHYLL-A L2_01 CT3002- 02-1- Amos Lake (Preston) Recreation NUTRIENTS L2_01

CT3004- Oxoboxo Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID

CT3006- Hunts Brook (Waterford)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

Willimantic River CT3100- (Tolland/Willington/Ellington/Staffo Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_05 rd)-05 CT3100- (Tolland/Willington/Ellington/Staffo ESCHERICHIA COLI (E. COLI) 00_05 rd)-05 Recreation

CT3207- Roberts Brook (Mansfield)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 12_01

CT3208- 3 Sawmill Brook (Mansfield)-01 Recreation ESCHERICHIA COLI (E. COLI) 00_01 CT3208- Conantville Brook (Mansfield)-01 Recreation ESCHERICHIA COLI (E. COLI) 02_01 CT3300- Quinatissett Brook (Thompson)-01 Recreation ESCHERICHIA COLI (E. COLI) 10_01

CT3700- (Lisbon/Griswold)- Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01 01

CT3700- Quinebaug River (Putnam)-04 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_04

CT3700- Quinebaug River Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_05 (Putnam/Thompson)-05

CT3700- Quinebaug River Recreation ESCHERICHIA COLI (E. COLI) 00_05 (Putnam/Thompson)-05

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID CT3700- 00- West Thompson Lake (Thompson) Habitat for Fish, Other Aquatic Life and Wildlife ALGAE 2+L1_01 CT3700- 00- West Thompson Lake (Thompson) Habitat for Fish, Other Aquatic Life and Wildlife CHLOROPHYLL-A 2+L1_01 CT3700- 00- West Thompson Lake (Thompson) Habitat for Fish, Other Aquatic Life and Wildlife NUTRIENTS 2+L1_01 CT3700- 00- West Thompson Lake (Thompson) Recreation ALGAE 2+L1_01 CT3700- 4 00- West Thompson Lake (Thompson) Recreation CHLOROPHYLL-A 2+L1_01 CT3700- 00- West Thompson Lake (Thompson) Recreation NUTRIENTS 2+L1_01 CT3700- Aspinook Pond 00- Recreation ALGAE (Canterbury/Griswold/Lisbon) 5+L4_01 CT3700- Aspinook Pond 00- Recreation CHLOROPHYLL-A (Canterbury/Griswold/Lisbon) 5+L4_01 CT3700- Aspinook Pond 00- Recreation NUTRIENTS (Canterbury/Griswold/Lisbon) 5+L4_01 CT3700- Durkee Brook (Pomfret)-01 Recreation ESCHERICHIA COLI (E. COLI) 17_01

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID CT3708- Little River (Putnam/Woodstock)-01 Recreation ESCHERICHIA COLI (E. COLI) 00_01 CT3708- 00-1- Roseland Lake (Woodstock) Recreation NUTRIENTS L1_01 CT3708- Wheatons Brook Recreation ESCHERICHIA COLI (E. COLI) 18_01 (Putnam/Thompson)-01 CT3709- Wappaquoia Brook-01 Recreation ESCHERICHIA COLI (E. COLI) 00_01 CT3709- Day Brook (Pomfret)-01 Recreation ESCHERICHIA COLI (E. COLI) 02_01 CT3800- (Norwich)-01 Recreation ESCHERICHIA COLI (E. COLI) 00_01 5 CT3800- 00- Spaulding Pond (Norwich) Recreation ESCHERICHIA COLI (E. COLI) 6+L3_01 CT3805- Little River (Sprague)-02 Fish Consumption MERCURY 00_02 CT3805- Little River (Sprague)-02 Fish Consumption POLYCHLORINATED BIPHENYLS (PCBS) 00_02

CT3805- Little River (Sprague)-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_02

CT3805- Little River (Sprague)-02 Habitat for Fish, Other Aquatic Life and Wildlife WHOLE EFFLUENT TOXICITY (WET) 00_02

CT3805- 00-3- Papermill Pond (Sprague) Fish Consumption MERCURY L6_01

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID CT3805- 00-3- Papermill Pond (Sprague) Fish Consumption POLYCHLORINATED BIPHENYLS (PCBS) L6_01 CT3805- 00-3- Versailles Pond (Sprague) Fish Consumption MERCURY L7_01 CT3805- 00-3- Versailles Pond (Sprague) Fish Consumption POLYCHLORINATED BIPHENYLS (PCBS) L7_01 CT3805- 00-3- Versailles Pond (Sprague) Habitat for Fish, Other Aquatic Life and Wildlife NUTRIENTS L7_01

CT3900- Unnamed Trib, Habitat for Fish, Other Aquatic Life and Wildlife AMMONIA, UN-IONIZED 6 00_trib_01 (Norwich Landfill)-01

CT3900- Unnamed Trib, Yantic River Habitat for Fish, Other Aquatic Life and Wildlife COPPER 00_trib_01 (Norwich Landfill)-01

CT3900- Unnamed Trib, Yantic River Habitat for Fish, Other Aquatic Life and Wildlife DISSOLVED OXYGEN 00_trib_01 (Norwich Landfill)-01

CT3900- Unnamed Trib, Yantic River Habitat for Fish, Other Aquatic Life and Wildlife LEAD 00_trib_01 (Norwich Landfill)-01

CT3900- Unnamed Trib, Yantic River Habitat for Fish, Other Aquatic Life and Wildlife NUTRIENTS 00_trib_01 (Norwich Landfill)-01

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID

CT3900- Unnamed Trib, Yantic River ORGANIC ENRICHMENT (SEWAGE) Habitat for Fish, Other Aquatic Life and Wildlife 00_trib_01 (Norwich Landfill)-01 BIOLOGICAL INDICATORS

CT3900- 00- Browning Pond (Norwich Landfill)- Habitat for Fish, Other Aquatic Life and Wildlife AMMONIA, UN-IONIZED UL_pond_ 01 01 CT3900- 00- Browning Pond (Norwich Landfill)- Habitat for Fish, Other Aquatic Life and Wildlife COPPER UL_pond_ 01 01 CT3900- 00- Browning Pond (Norwich Landfill)- Habitat for Fish, Other Aquatic Life and Wildlife DISSOLVED OXYGEN 7 UL_pond_ 01 01 CT3900- 00- Browning Pond (Norwich Landfill)- Habitat for Fish, Other Aquatic Life and Wildlife LEAD UL_pond_ 01 01 CT3900- 00- Browning Pond (Norwich Landfill)- Habitat for Fish, Other Aquatic Life and Wildlife NUTRIENTS UL_pond_ 01 01 CT3900- 00- Browning Pond (Norwich Landfill)- ORGANIC ENRICHMENT (SEWAGE) Habitat for Fish, Other Aquatic Life and Wildlife UL_pond_ 01 BIOLOGICAL INDICATORS 01

CT3900- Kahn Brook (Bozrah)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 07_01

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID

CT3900- Kahn Brook (Bozrah)-01 Habitat for Fish, Other Aquatic Life and Wildlife PHOSPHORUS, TOTAL 07_01

CT3900- Kahn Brook (Bozrah)-01 Recreation ESCHERICHIA COLI (E. COLI) 07_01 CT3902- Bartlett Brook (Lebanon)-02 Recreation ESCHERICHIA COLI (E. COLI) 00_02

CT3905- Pease Brook Recreation ESCHERICHIA COLI (E. COLI) 00_01a (Bozrah/Franklin/Lebanon)-01a

CT3907- Susquetonscut Brook-01 Recreation ESCHERICHIA COLI (E. COLI) 00_01 CT4000- -01 Fish Consumption POLYCHLORINATED BIPHENYLS (PCBS) 8 00_01 CT4000- Connecticut River-02 Fish Consumption POLYCHLORINATED BIPHENYLS (PCBS) 00_02 CT4000- Connecticut River-02 Recreation ESCHERICHIA COLI (E. COLI) 00_02 CT4000- Connecticut River Fish Consumption POLYCHLORINATED BIPHENYLS (PCBS) 00_03 (Portland/Suffield)-03

CT4004- Farm Brook (South Windsor)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 02_01

CT4013- Sumner Brook (Middletown)-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_02

CT4013- 05-1- Crystal Lake (Middletown) Recreation ESCHERICHIA COLI (E. COLI) L1_01

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID

CT4100- Stony Brook (Suffield)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

CT4100- Stony Brook (Suffield)-03 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_03

CT4101- Muddy Brook (Suffield)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

CT4200- Scantic River-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

CT4200- Scantic River-01 Recreation ESCHERICHIA COLI (E. COLI) 9 00_01 CT4200- Scantic River-02 Recreation ESCHERICHIA COLI (E. COLI) 00_02 CT4200- Scantic River-03 Recreation ESCHERICHIA COLI (E. COLI) 00_03 CT4200- Thrasher Brook (Somers)-01 Recreation ESCHERICHIA COLI (E. COLI) 15_01 CT4200- Dry Brook (South Windsor/East Recreation ESCHERICHIA COLI (E. COLI) 28_01 Windsor)-01 CT4202- Gillettes Brook (Somers)-01 Recreation ESCHERICHIA COLI (E. COLI) 00_01 CT4203- Gulf Stream (Somers)-01 Recreation ESCHERICHIA COLI (E. COLI) 00_01 CT4204- Abbey Brook (Somers)-01 Recreation ESCHERICHIA COLI (E. COLI) 00_01

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID

CT4206- Broad Brook (East Windsor)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

CT4206- Broad Brook (East Windsor- Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_02 Ellington)-02

CT4300- Farmington River (Windsor)-01 Recreation ESCHERICHIA COLI (E. COLI) 00_01 CT4300- Farmington River Recreation ESCHERICHIA COLI (E. COLI) 00_02 (Bloomfield/Farmington)-02 CT4300- Minister Brook (Simsbury)-01 ESCHERICHIA COLI (E. COLI) 32_01 Recreation CT4300- Phelps Brook (Windsor)-01 Recreation ESCHERICHIA COLI (E. COLI) 10 54_01

CT4303- Still River (Winsted)-03 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_03

CT4308- Compensating Res. (L. McDonough) 00-1- Fish Consumption MERCURY (Barkhamsted/New Hartford) L2_01

CT4309- Cherry Brook (Canton)-01 Recreation ESCHERICHIA COLI (E. COLI) 00_01 CT4311- Burlington Brook (Burlington)-01 Recreation ESCHERICHIA COLI (E. COLI) 00_01 CT4312- Roaring Brook (Farmington)-01 Recreation ESCHERICHIA COLI (E. COLI) 00_01

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID

CT4314- Coppermine Brook (Bristol)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

CT4315- Pequabuck River (Plainville)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

CT4315- Pequabuck River (Plainville)-01 Habitat for Fish, Other Aquatic Life and Wildlife PHOSPHORUS, TOTAL 00_01

CT4315- Pequabuck River-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_02

11 CT4315- Pequabuck River-02 Habitat for Fish, Other Aquatic Life and Wildlife PHOSPHORUS, TOTAL 00_02

CT4315- Pequabuck River-03 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_03

CT4315- Pequabuck River-03 Habitat for Fish, Other Aquatic Life and Wildlife ZINC 00_03

CT4315- Pequabuck River-05 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_05

CT4315- Pequabuck River-05 Habitat for Fish, Other Aquatic Life and Wildlife PHOSPHORUS, TOTAL 00_05

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID

CT4315- Pequabuck River-06 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_06

CT4318- Hop Brook (Simsbury)-01 Recreation ESCHERICHIA COLI (E. COLI) 00_01

CT4321- Mill Brook (Windsor/Bloomfield)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

CT4400- South Branch Park River (Hartford)- Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 01_01 01

CT4400- South Branch Park River (Hartford)- Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 12 01_02 02

CT4402- Piper Brook-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_02

CT4402- Piper Brook-02 Habitat for Fish, Other Aquatic Life and Wildlife PHOSPHORUS, TOTAL 00_02

CT4403- Trout Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

CT4403- Trout Brook-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_02

CT4403- Trout Brook-03 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_03

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID

CT4404- North Branch Park River-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_02

CT4500- Hockanum River-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

CT4500- Hockanum River (East Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_02 Hartford/Manchester)-02

CT4500- Hockanum River-03 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_03

13 CT4500- Hockanum River-04a Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_04a

CT4500- Hockanum river-04b Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_04b

CT4500- Hockanum River-05 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_05

CT4500- Hockanum River-05 Habitat for Fish, Other Aquatic Life and Wildlife PHOSPHORUS, TOTAL 00_05

CT4500- Hockanum River-06a Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_06a

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID

CT4500- Hockanum River Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_06b (Vernon/Rockville)-06b

CT4500- Hockanum river-08 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_08

CT4500- 00-3- Union Pond (Manchester) Fish Consumption CHLORDANE L3_01 CT4500- 00-3- Union Pond (Manchester) Habitat for Fish, Other Aquatic Life and Wildlife ALGAE L3_01 CT4500- 14 00-3- Union Pond (Manchester) Habitat for Fish, Other Aquatic Life and Wildlife NUTRIENTS L3_01 CT4500- 00-3- Union Pond (Manchester) Habitat for Fish, Other Aquatic Life and Wildlife SEDIMENTATION/SILTATION L3_01

CT4500- Ogden Brook (Vernon)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 04_01

CT4500- Lydall Brook (Manchester)-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 12_02

CT4503- Tankerhoosen River-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID

CT4504- South Fork Hockanum River Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01 (Manchester)-01

CT4600- Mattabesset River (Cromwell/East Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_02 Berlin)-02

CT4600- Mattabesset River (Cromwell/East Recreation ESCHERICHIA COLI (E. COLI) 00_02 Berlin)-02

CT4600- Mattabesset River-03 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_03

CT4600- Mattabesset River-03 Recreation ESCHERICHIA COLI (E. COLI) 00_03 15 CT4600- Mattabesset River-04 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_04

CT4600- Mattabesset River-04 Recreation ESCHERICHIA COLI (E. COLI) 00_04

CT4600- Mattabesset River-05 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_05

CT4600- Mattabesset River-06 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_06

CT4600- Mattabesset River-06 Recreation ESCHERICHIA COLI (E. COLI) 00_06

CT4600- Unnamed tributary Connecticut Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00-trib_01 River (Cromwell)-01

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID

CT4601- Belcher Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

CT4601- 00-1- Silver Lake (Berlin/Meriden) Habitat for Fish, Other Aquatic Life and Wildlife NUTRIENTS L2_01 CT4601- 00-1- Silver Lake (Berlin/Meriden) Habitat for Fish, Other Aquatic Life and Wildlife TURBIDITY L2_01

CT4601- Hatchery Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 02_01

16 CT4602- Willow Brook (New Britain)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

CT4602- Willow Brook (New Britain)-01 Recreation ESCHERICHIA COLI (E. COLI) 00_01

CT4603- Webster Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

CT4603- Webster Brook-01 Recreation ESCHERICHIA COLI (E. COLI) 00_01

CT4607- Coginchaug River-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

CT4607- 10-1- Beseck Lake (Middlefield) Habitat for Fish, Other Aquatic Life and Wildlife ALGAE L1_01

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID CT4607- 10-1- Beseck Lake (Middlefield) Habitat for Fish, Other Aquatic Life and Wildlife CHLOROPHYLL-A L1_01 CT4607- 10-1- Beseck Lake (Middlefield) Habitat for Fish, Other Aquatic Life and Wildlife PHOSPHORUS, TOTAL L1_01 CT4607- 10-1- Beseck Lake (Middlefield) Recreation ALGAE L1_01 CT4607- 10-1- Beseck Lake (Middlefield) Recreation CHLOROPHYLL-A L1_01 CT4607- 17 10-1- Beseck Lake (Middlefield) Recreation PHOSPHORUS, TOTAL L1_01

CT4703- Cabin Brook (Colchester)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 01_01a

CT4707- Lyman Brook (Marlborough)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 12_01

CT4709- Pocotopaug Creek (East Hampton)- Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 04_02 02

CT4709- 04-1- Pocotopaug Lake (East Hampton) Recreation ALGAE L1_01 CT4709- 04-1- Pocotopaug Lake (East Hampton) Recreation CHLOROPHYLL-A L1_01

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID CT4709- 04-1- Pocotopaug Lake (East Hampton) Recreation NUTRIENTS L1_01

CT5000- Unnamed trib to Oyster River Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 55_01 (Milford)-01

CT5000- Unnamed trib to Oyster River (Milford)- Habitat for Fish, Other Aquatic Life and Wildlife MERCURY 55_02 02

CT5102- Spring Lot Brook (Westbrook)-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 02_02

CT5105- Chatfield Hollow Brook 18 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_04 (Killingworth)-04

CT5111- Branford River-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_02

CT5111- Branford Supply Pond, Northwest 09-2- Habitat for Fish, Other Aquatic Life and Wildlife SEDIMENTATION/SILTATION (Branford) L3_01 CT5111- Branford Supply Pond, Northwest 09-2- Habitat for Fish, Other Aquatic Life and Wildlife TOTAL SUSPENDED SOLIDS (TSS) (Branford) L3_01 CT5111- Branford Supply Pond, Northwest 09-2- Habitat for Fish, Other Aquatic Life and Wildlife TURBIDITY (Branford) L3_01

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID

CT5112- (East Haven)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

CT5112- Farm River (North Branford)-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_02

CT5112- Burrs Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife SODIUM 10_01

CT5112- Burrs Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife TURBIDITY 10_01

19 CT5200- (North Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01 Haven/Wallingford)-01

CT5200- Quinnipiac River (North Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_02 Haven/Meriden)-02

CT5200- Quinnipiac River (North Habitat for Fish, Other Aquatic Life and Wildlife PHOSPHORUS, TOTAL 00_02 Haven/Meriden)-02

CT5200- Quinnipiac River-03 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_03

CT5200- Quinnipiac River-04 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_04

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID

CT5200- Quinnipiac River-04 Habitat for Fish, Other Aquatic Life and Wildlife PHOSPHORUS, TOTAL 00_04

CT5200- Quinnipiac River-05 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_05

CT5200- Quinnipiac River-05 Habitat for Fish, Other Aquatic Life and Wildlife PHOSPHORUS, TOTAL 00_05

CT5200- Quinnipiac River-06 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_06

20 CT5200- Quinnipiac River-07 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_07

CT5200- 00-4- Hanover Pond (Meriden) Fish Consumption POLYCHLORINATED BIPHENYLS (PCBS) L2_01 CT5200- 00-4- Hanover Pond (Meriden) Habitat for Fish, Other Aquatic Life and Wildlife NUTRIENTS L2_01 CT5200- 00-4- Hanover Pond (Meriden) Habitat for Fish, Other Aquatic Life and Wildlife SEDIMENTATION/SILTATION L2_01 CT5200- 00-4- Hanover Pond (Meriden) Recreation ESCHERICHIA COLI (E. COLI) L2_01

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID

CT5200- Patton Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 02_01

CT5200- Meetinghouse Brook (Wallingford)- Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 10_01 01

CT5200- Hemingway Creek-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 23_01

CT5202- Tenmile River Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01 (Southington/Cheshire)-01

21 CT5203- Misery Brook (Southington)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

CT5205- Sodom Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

CT5206- Harbor Brook (Meriden)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

CT5206- Harbor Brook (Meriden)-03 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_03

CT5206- Spoon Shop Brook (Meriden)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 01_01

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID

CT5206- Spoon Shop Brook (Meriden)-01 Habitat for Fish, Other Aquatic Life and Wildlife ESCHERICHIA COLI (E. COLI) 01_01

CT5206- Spoon Shop Brook (Meriden)-01 Recreation ESCHERICHIA COLI (E. COLI) 01_01

CT5206- Willow Brook (Meriden)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 02_01

CT5207- Wharton Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

CT5207- Wharton Brook-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 22 00_02

CT5207- Unnamed Tributary to Wharton Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 01_01 Brook (Wallingford)-01

CT5208- Muddy River (North Haven)-02a Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_02a

CT5208- Muddy River (North Haven)-02a Recreation ESCHERICHIA COLI (E. COLI) 00_02a CT5301- Willow Brook (Hamden)-01 Recreation ESCHERICHIA COLI (E. COLI) 00_01

CT5302- Mill River (Cheshire)-03 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_03

CT5304- Wintergreen Brook (New Haven)-01 Recreation ESCHERICHIA COLI (E. COLI) 00_01

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID

CT5305- West River (New Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01 Haven/Woodbridge)-01

CT5306- Indian River (Orange)-02 Recreation ESCHERICHIA COLI (E. COLI) 00_02

CT5306- Silver Brook (Orange)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 01_01

CT5306- Silver Brook (Orange)-01 Recreation ESCHERICHIA COLI (E. COLI) 01_01 CT5306- Silver Brook (Orange)-02 Recreation ESCHERICHIA COLI (E. COLI) 01_02 CT6000- Recreation ESCHERICHIA COLI (E. COLI) 23 00_01 (Orange/Shelton/Derby)-01 CT6000- Housatonic River (Shelton/Derby)- Recreation ESCHERICHIA COLI (E. COLI) 00_02 02 CT6000- Housatonic River-04 Recreation ESCHERICHIA COLI (E. COLI) 00_04 CT6000- Lillinonah, Lake 00- (Newtown/Southbury/Bridgewater/ Recreation ALGAE 5+L1_01 Brookfield) CT6000- Lillinonah, Lake 00- (Newtown/Southbury/Bridgewater/ Recreation CHLOROPHYLL-A 5+L1_01 Brookfield) CT6000- Lillinonah, Lake 00- (Newtown/Southbury/Bridgewater/ Recreation FLOATING DEBRIS 5+L1_01 Brookfield)

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID CT6000- Lillinonah, Lake 00- (Newtown/Southbury/Bridgewater/ Recreation NUTRIENTS 5+L1_01 Brookfield) CT6000- Lillinonah, Lake 00- (Newtown/Southbury/Bridgewater/ Recreation TASTE 5+L1_01 Brookfield) CT6000- Zoar, Lake 00- (Monroe/Newtown/Oxford/Southb Recreation ALGAE 5+L2_01 ury) CT6000- Zoar, Lake 00- (Monroe/Newtown/Oxford/Southb Recreation CHLOROPHYLL-A 5+L2_01 ury) CT6000- Zoar, Lake 24 00- (Monroe/Newtown/Oxford/Southb Recreation NUTRIENTS 5+L2_01 ury) CT6000- 00- Zoar, Lake (Newtown/Southbury) Recreation ALGAE 5+L2_02 CT6000- 00- Zoar, Lake (Newtown/Southbury) Recreation CHLOROPHYLL-A 5+L2_02 CT6000- 00- Zoar, Lake (Newtown/Southbury) Recreation NUTRIENTS 5+L2_02 CT6000- Housatonic Lake 00- (Shelton/Derby/Seymour/Oxford/M Recreation ALGAE 5+L4_01 onroe)

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID CT6000- Housatonic Lake 00- (Shelton/Derby/Seymour/Oxford/M Recreation CHLOROPHYLL-A 5+L4_01 onroe) CT6000- Housatonic Lake 00- (Shelton/Derby/Seymour/Oxford/M Recreation NUTRIENTS 5+L4_01 onroe)

CT6000- Twomile Brook (Derby/Orange)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 77_01

CT6000- 88-1- Brewsters Pond (Stratford) Fish Consumption CHLORDANE L1_01 CT6000- 25 88-1- Brewsters Pond (Stratford) Habitat for Fish, Other Aquatic Life and Wildlife ALGAE L1_01 CT6000- 88-1- Brewsters Pond (Stratford) Habitat for Fish, Other Aquatic Life and Wildlife DISSOLVED OXYGEN L1_01 CT6000- 88-1- Brewsters Pond (Stratford) Habitat for Fish, Other Aquatic Life and Wildlife NUTRIENTS L1_01 CT6004- Konkapot River-01 Fish Consumption MERCURY 00_01

CT6005- Factory Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

CT6005- Factory Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife PHOSPHORUS, TOTAL 00_01

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID

CT6008- Mill Brook (Cornwall)-02b Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_02b

CT6014- Bog Hollow Brook (Kent)-01 Recreation ESCHERICHIA COLI (E. COLI) 00_01 CT6016- 00-1- Hatch Pond (Kent) Habitat for Fish, Other Aquatic Life and Wildlife ALGAE L3_01 CT6016- 00-1- Hatch Pond (Kent) Habitat for Fish, Other Aquatic Life and Wildlife CHLOROPHYLL-A L3_01 CT6016- 00-1- Hatch Pond (Kent) Habitat for Fish, Other Aquatic Life and Wildlife DISSOLVED OXYGEN 26 L3_01 CT6016- 00-1- Hatch Pond (Kent) Habitat for Fish, Other Aquatic Life and Wildlife NUTRIENTS L3_01 CT6016- 00-1- Hatch Pond (Kent) Habitat for Fish, Other Aquatic Life and Wildlife SEDIMENTATION/SILTATION L3_01 CT6016- 00-1- Hatch Pond (Kent) Recreation ALGAE L3_01 CT6016- 00-1- Hatch Pond (Kent) Recreation CHLOROPHYLL-A L3_01 CT6016- 00-1- Hatch Pond (Kent) Recreation NUTRIENTS L3_01

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID CT6016- 00-1- Hatch Pond (Kent) Recreation SEDIMENTATION/SILTATION L3_01

CT6019- Unnamed tributary Deep Brook Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00-trib_01 (Newtown)-01

CT6025- Farmill River-04 Recreation ESCHERICHIA COLI (E. COLI) 00_04 CT6026- Cemetery Pond Brook Recreation ESCHERICHIA COLI (E. COLI) 03_01 (Stratford/Shelton)-01 CT6100- Blackberry River (North Canaan)-01 Fish Consumption POLYCHLORINATED BIPHENYLS (PCBS) 00_01 CT6100- Blackberry River (North Canaan)- Fish Consumption POLYCHLORINATED BIPHENYLS (PCBS) 27 00_02a 02a CT6100- Blackberry River (North Canaan)- Fish Consumption POLYCHLORINATED BIPHENYLS (PCBS) 00_02b 02b

CT6402- Ball Pond Brook (New Fairfield)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

CT6402- Ball Pond Brook (New Fairfield)-01 Recreation ESCHERICHIA COLI (E. COLI) 00_01 CT6402- 00-1- Ball Pond (New Fairfield) Recreation ALGAE L1_01 CT6402- 00-1- Ball Pond (New Fairfield) Recreation CHLOROPHYLL-A L1_01 CT6402- 00-1- Ball Pond (New Fairfield) Recreation NUTRIENTS L1_01

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID CT6502- Waramaug, Lake 00-1- Recreation ALGAE (Kent/Warren/Washington) L2_01 CT6502- Waramaug, Lake 00-1- Recreation CHLOROPHYLL-A (Kent/Warren/Washington) L2_01 CT6502- Waramaug, Lake 00-1- Recreation NUTRIENTS (Kent/Warren/Washington) L2_01

CT6600- Still River (New Milford/Brookfield)- Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01 01

CT6600- Still River (Brookfield/Danbury)-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 28 00_02

CT6600- Still River (Brookfield/Danbury)-02 Habitat for Fish, Other Aquatic Life and Wildlife PHOSPHORUS, TOTAL 00_02

CT6600- Still River (Danbury)-03 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_03

CT6600- Still River (Danbury)-03 Recreation ESCHERICHIA COLI (E. COLI) 00_03

CT6600- Still River (Danbury)-04 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_04

CT6600- Still River (Danbury)-05 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_05

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID CT6600- Still River (Danbury)-05 Recreation ESCHERICHIA COLI (E. COLI) 00_05

CT6603- Padanaram Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

CT6603- Padanaram Brook-01 Recreation ESCHERICHIA COLI (E. COLI) 00_01

CT6604- Sympaug Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

CT6604- Sympaug Brook-01 Recreation ESCHERICHIA COLI (E. COLI) 00_01 CT6705- 29 00-3- (Litchfield/Morris) Recreation ALGAE L3_01 CT6705- 00-3- Bantam Lake (Litchfield/Morris) Recreation CHLOROPHYLL-A L3_01 CT6705- 00-3- Bantam Lake (Litchfield/Morris) Recreation NUTRIENTS L3_01 CT6806- Transylvania Brook (Southbury)-01 Recreation ESCHERICHIA COLI (E. COLI) 00_01

CT6900- Naugatuck River (Derby/Seymour)- Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01 01

CT6900- Naugatuck River Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_02 (Seymour/Waterbury)-02

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID

CT6900- Naugatuck River Habitat for Fish, Other Aquatic Life and Wildlife PHOSPHORUS, TOTAL 00_02 (Seymour/Waterbury)-02

CT6900- Naugatuck River-03 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_03

CT6900- Naugatuck River-04 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_04

CT6900- Naugatuck River-06 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_06

30 CT6900- Naugatuck River-07 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_07

CT6900- Naugatuck River-07 Habitat for Fish, Other Aquatic Life and Wildlife PHOSPHORUS, TOTAL 00_07

CT6900- Naugatuck River-08 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_08

CT6904- West Branch Naugatuck River-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

CT6905- East Branch Naugatuck River-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID

CT6910- Branch Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

CT6911- Hancock Brook (Waterbury)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

CT6911- Todd Hollow Brook (Plymouth)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 05_01

CT6912- Steele Brook-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_02

31 CT6912- Steele Brook-02 Habitat for Fish, Other Aquatic Life and Wildlife IRON 00_02

CT6914- Mad River (Waterbury)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

CT6914- Mad River (Waterbury)-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_02

CT6914- Mad River (Waterbury)-03a Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_03a

CT6916- Hop Brook (Naugatuck)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID CT6916- 00-3- Recreation ESCHERICHIA COLI (E. COLI) (Waterbury/Middlebury) L4_01

CT6917- Long Meadow Pond Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

CT6919- Bladens River (Seymour)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

CT6919- Bladens River (Seymour)-01 Recreation ESCHERICHIA COLI (E. COLI) 00_01

CT7000- Muddy Brook (Westport)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 16_01 32 CT7000- Muddy Brook (Westport)-01 Recreation ESCHERICHIA COLI (E. COLI) 16_01 CT7000- Unnamed tributary, Muddy Brook Recreation ESCHERICHIA COLI (E. COLI) 16-trib_01 (Westport)-01 CT7000- Unnamed trib, Muddy Brook Recreation ESCHERICHIA COLI (E. COLI) 17_01 (Westport)-01 CT7000- Unnamed trib, Sherwood Millpond Recreation ESCHERICHIA COLI (E. COLI) 18_01 LIS (Westport)-01 CT7000- Indian River (Westport)-01 Recreation IRON 22_01 CT7000- Indian River (Westport)-02 Recreation IRON 22_02 CT7000- Unnamed trib to Farm Creek LIS Recreation ESCHERICHIA COLI (E. COLI) 29_01 (Norwalk)-01

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID CT7102- Bruce Brook (Bridgeport/Stratford)- Recreation ESCHERICHIA COLI (E. COLI) 00_01 01

CT7102- Bruce Brook (Bridgeport/Stratford)- Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_02 02

CT7102- Bruce Brook (Stratford)-03 Recreation ESCHERICHIA COLI (E. COLI) 00_03 CT7103- 00-2- Success Lake (Bridgeport) Habitat for Fish, Other Aquatic Life and Wildlife LEAD L3_01 CT7103- 00-2- Success Lake (Bridgeport) Habitat for Fish, Other Aquatic Life and Wildlife MERCURY L3_01 33 CT7103- 00-2- Stillman Pond (Bridgeport) Fish Consumption CADMIUM L4_01 CT7103- 00-2- Stillman Pond (Bridgeport) Fish Consumption LEAD L4_01 CT7103- 00-2- Stillman Pond (Bridgeport) Fish Consumption MERCURY L4_01 CT7103- 00-2- Stillman Pond (Bridgeport) Fish Consumption POLYCHLORINATED BIPHENYLS (PCBS) L4_01 CT7103- 00-2- Pembroke Lakes (Bridgeport) Habitat for Fish, Other Aquatic Life and Wildlife LEAD L5_01

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID CT7103- 00-2- Pembroke Lakes (Bridgeport) Habitat for Fish, Other Aquatic Life and Wildlife POLYCHLORINATED BIPHENYLS (PCBS) L5_01 CT7105- (Bridgeport)-01 ESCHERICHIA COLI (E. COLI) 00_01 Recreation

CT7105- Pequonnock River Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_02 (Bridgeport/Trumbull)-02

CT7105- Pequonnock River (Trumbull)-03 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_03

CT7106- Horse Tavern Brook ESCHERICHIA COLI (E. COLI) 02_01 (Fairfield/Trumbull)-01 Recreation 34 CT7107- Cricker Brook (Fairfield)-01 Recreation ESCHERICHIA COLI (E. COLI) 00_01 CT7108- Mill River (Fairfield)-01 ESCHERICHIA COLI (E. COLI) 00_01 Recreation

CT7108- Unnamed tributary, Easton Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 05_02 Reservoir (Snow Farm)-02

CT7109- Sasco Brook (Westport/Fairfield)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

CT7200- -01 ESCHERICHIA COLI (E. COLI) 00_01 Recreation CT7200- Deadman Brook ESCHERICHIA COLI (E. COLI) 29_01 (Westport/Fairfield)-01 Recreation CT7201- Little River (Redding)-01 Recreation ESCHERICHIA COLI (E. COLI) 00_01

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID CT7203- West Branch Saugatuck River-01 ESCHERICHIA COLI (E. COLI) 00_01 Recreation

CT7300- Norwalk River (Norwalk/Wilton)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

CT7300- Norwalk River (Norwalk/Wilton)-01 Habitat for Fish, Other Aquatic Life and Wildlife SEDIMENTATION/SILTATION 00_01

CT7300- Norwalk River (Ridgefield)-05 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_05

CT7300- Norwalk River (Ridgefield)-05 Recreation ESCHERICHIA COLI (E. COLI) 00_05 35 CT7300- Ridgefield Brook (Ridgefield)-01 Habitat for Fish, Other Aquatic Life and Wildlife PHOSPHORUS, TOTAL 02_01

CT7300- Ridgefield Brook (Ridgefield)-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 02_02

CT7300- Ridgefield Brook (Ridgefield)-02 Recreation ESCHERICHIA COLI (E. COLI) 02_02

CT7300- Cooper Pond Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 07_01

CT7300- Cooper Pond Brook-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 07_02

CT7301- Comstock Brook (Wilton)-01 Recreation ESCHERICHIA COLI (E. COLI) 00_01

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID CT7301- Comstock Brook (Wilton)-02 ESCHERICHIA COLI (E. COLI) 00_02 Recreation CT7302- Silvermine River (Norwalk)-01 ESCHERICHIA COLI (E. COLI) 00_01 Recreation CT7302- Belden Hill Brook (Wilton)-01 Recreation ESCHERICHIA COLI (E. COLI) 13_01

CT7401- Fivemile River (New Canaan)-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

CT7401- Fivemile River (New Canaan)-01 Habitat for Fish, Other Aquatic Life and Wildlife PHOSPHORUS, TOTAL 00_01

CT7401- 36 Fivemile River (New Canaan)-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_02

CT7401- Fivemile River (New Canaan)-03 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_03

CT7401- Fivemile River (New Canaan)-03 Recreation ESCHERICHIA COLI (E. COLI) 00_03

CT7401- Fivemile River (New Canaan)-04 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_04

CT7402- Goodwives River (Darien)-01 ESCHERICHIA COLI (E. COLI) 01_01 Recreation

CT7403- Noroton River-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID CT7403- Noroton River-01 Recreation ESCHERICHIA COLI (E. COLI) 00_01

CT7403- Noroton River-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_02

CT7403- Noroton River-02 Recreation ESCHERICHIA COLI (E. COLI) 00_02 CT7403- Noroton River-03 Recreation ESCHERICHIA COLI (E. COLI) 00_03

CT7405- Rippowam River-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

CT7405- Rippowam River-01 Recreation ESCHERICHIA COLI (E. COLI) 37 00_01 CT7405- Rippowam River-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_02

CT7407- Mianus River-02 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_02

CT7408- Greenwich Creek (Greenwich)-01 ESCHERICHIA COLI (E. COLI) 00_01 Recreation

CT7409- Horseneck Brook-01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

CT7409- Horseneck Brook-01 ESCHERICHIA COLI (E. COLI) 00_01 Recreation CT7409- Horseneck Brook-01 ESCHERICHIA COLI (E. COLI) 00_02 Recreation

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID

CT7411- -01 Habitat for Fish, Other Aquatic Life and Wildlife CAUSE UNKNOWN 00_01

CT8104- 00-2- Mamanasco Lake (Ridgefield) Habitat for Fish, Other Aquatic Life and Wildlife ALGAE L5_01 CT8104- 00-2- Mamanasco Lake (Ridgefield) Recreation ALGAE L5_01

CT- LIS CB Inner - Inner Clinton Harbor, Habitat for Marine Fish, Other Aquatic Life and DISSOLVED OXYGEN C1_002-SB Clinton Wildlife

CT- LIS CB Inner - Inner Clinton Harbor, Habitat for Marine Fish, Other Aquatic Life and 38 NUTRIENTS C1_002-SB Clinton Wildlife

LIS CB Inner - Farm River, East Habitat for Marine Fish, Other Aquatic Life and DISSOLVED OXYGEN, TOTAL NITROGEN, CT-C1_011 Haven Wildlife NUTRIENTS

LIS CB Inner - Morris Creek, East Habitat for Marine Fish, Other Aquatic Life and CT-C1_012 DISSOLVED OXYGEN Haven Wildlife

LIS CB Inner - Morris Creek, East Habitat for Marine Fish, Other Aquatic Life and CT-C1_012 NUTRIENTS Haven Wildlife

LIS CB Inner - Morris Creek, East Habitat for Marine Fish, Other Aquatic Life and CT-C1_012 OIL AND GREASE Haven Wildlife

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID

LIS CB Inner - Morris Creek, East Habitat for Marine Fish, Other Aquatic Life and CT-C1_012 POLYCHLORINATED BIPHENYLS (PCBS) Haven Wildlife

CT- LIS CB Inner - New Haven Harbor, Habitat for Marine Fish, Other Aquatic Life and DISSOLVED OXYGEN C1_013-SB New Haven Wildlife

CT- LIS CB Inner - New Haven Harbor, Habitat for Marine Fish, Other Aquatic Life and NUTRIENTS C1_013-SB New Haven Wildlife

CT- LIS CB Inner - New Haven Harbor, Habitat for Marine Fish, Other Aquatic Life and OIL AND GREASE C1_013-SB New Haven Wildlife

39 CT- LIS CB Inner - New Haven Harbor, Habitat for Marine Fish, Other Aquatic Life and POLYCHLORINATED BIPHENYLS (PCBS) C1_013-SB New Haven Wildlife

CT- LIS CB Inner - Quinnipiac River Habitat for Marine Fish, Other Aquatic Life and DISSOLVED OXYGEN C1_014-SB (mouth), New Haven Wildlife

CT- LIS CB Inner - Quinnipiac River Habitat for Marine Fish, Other Aquatic Life and NUTRIENTS C1_014-SB (mouth), New Haven Wildlife

CT- LIS CB Inner - Quinnipiac River Habitat for Marine Fish, Other Aquatic Life and OIL AND GREASE C1_014-SB (mouth), New Haven Wildlife

CT- LIS CB Inner - Quinnipiac River Habitat for Marine Fish, Other Aquatic Life and POLYCHLORINATED BIPHENYLS (PCBS) C1_014-SB (mouth), New Haven Wildlife

CT- LIS CB Inner - Quinnipiac River Recreation ENTEROCOCCUS C1_014-SB (mouth), New Haven

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID

CT- LIS CB Inner - West River (Lower), Habitat for Marine Fish, Other Aquatic Life and DISSOLVED OXYGEN C1_015-SB West Haven Wildlife

CT- LIS CB Inner - West River (Lower), Habitat for Marine Fish, Other Aquatic Life and NUTRIENTS C1_015-SB West Haven Wildlife

CT- LIS CB Inner - West River (Lower), Habitat for Marine Fish, Other Aquatic Life and OIL AND GREASE C1_015-SB West Haven Wildlife

CT- LIS CB Inner - West River (Lower), Habitat for Marine Fish, Other Aquatic Life and POLYCHLORINATED BIPHENYLS (PCBS) C1_015-SB West Haven Wildlife

CT- LIS CB Inner - West River (Lower), 40 Recreation ENTEROCOCCUS C1_015-SB West Haven

LIS CB Inner - Cove River, West Habitat for Marine Fish, Other Aquatic Life and CT-C1_016 DISSOLVED OXYGEN Haven Wildlife

LIS CB Inner - Cove River, West Habitat for Marine Fish, Other Aquatic Life and CT-C1_016 NUTRIENTS Haven Wildlife

LIS CB Inner - Cove River, West Habitat for Marine Fish, Other Aquatic Life and CT-C1_016 POLYCHLORINATED BIPHENYLS (PCBS) Haven Wildlife

Habitat for Marine Fish, Other Aquatic Life and CT-C1_017 LIS CB Inner - Oyster River, Milford DISSOLVED OXYGEN Wildlife

Habitat for Marine Fish, Other Aquatic Life and CT-C1_017 LIS CB Inner - Oyster River, Milford NUTRIENTS Wildlife

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID

Habitat for Marine Fish, Other Aquatic Life and CT-C1_017 LIS CB Inner - Oyster River, Milford POLYCHLORINATED BIPHENYLS (PCBS) Wildlife

CT- LIS CB Inner - Housatonic River Habitat for Marine Fish, Other Aquatic Life and COPPER C1_019-SB (mouth), Milford Wildlife

CT- LIS CB Inner - Housatonic River Habitat for Marine Fish, Other Aquatic Life and DIOXIN (INCLUDING 2,3,7,8-TCDD) C1_019-SB (mouth), Milford Wildlife

CT- LIS CB Inner - Housatonic River Habitat for Marine Fish, Other Aquatic Life and POLYCHLORINATED BIPHENYLS (PCBS) C1_019-SB (mouth), Milford Wildlife

41 CT- LIS CB Inner - Housatonic River Habitat for Marine Fish, Other Aquatic Life and ZINC C1_019-SB (mouth), Milford Wildlife

CT- LIS CB Inner - Housatonic River Habitat for Marine Fish, Other Aquatic Life and DISSOLVED OXYGEN C1_021-SB (Upper), Orange Wildlife

CT- LIS CB Inner - Housatonic River Habitat for Marine Fish, Other Aquatic Life and NUTRIENTS C1_021-SB (Upper), Orange Wildlife

LIS CB Inner - West River (Upper), Habitat for Marine Fish, Other Aquatic Life and CT-C1_022 DISSOLVED OXYGEN West Haven Wildlife

LIS CB Inner - West River (Upper), Habitat for Marine Fish, Other Aquatic Life and CT-C1_022 NUTRIENTS West Haven Wildlife

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID

LIS CB Inner - West River (Upper), Habitat for Marine Fish, Other Aquatic Life and CT-C1_022 OIL AND GREASE West Haven Wildlife

LIS CB Inner - West River (Upper), Habitat for Marine Fish, Other Aquatic Life and CT-C1_022 POLYCHLORINATED BIPHENYLS (PCBS) West Haven Wildlife

LIS CB Inner - West River (Upper), CT-C1_022 Recreation ENTEROCOCCUS West Haven

LIS CB Inner - West River (Upper), Shellfish Harvesting for Direct Consumption CT-C1_022 FECAL COLIFORM West Haven Where Authorized

CT- LIS CB Inner - Mill River (mouth), Commercial Shellfish Harvesting Where FECAL COLIFORM 42 C1_023-SB New Haven/Hamden Authorized

CT- LIS CB Inner - Mill River (mouth), Habitat for Marine Fish, Other Aquatic Life and DISSOLVED OXYGEN C1_023-SB New Haven/Hamden Wildlife

CT- LIS CB Inner - Mill River (mouth), Recreation ENTEROCOCCUS C1_023-SB New Haven/Hamden

LIS CB Shore - Westbrook Harbor Shellfish Harvesting for Direct Consumption CT-C2_001 FECAL COLIFORM (East), Westbrook Where Authorized

CT- Habitat for Marine Fish, Other Aquatic Life and DISSOLVED OXYGEN, TOTAL NITROGEN, LIS CB Shore - Pages Cove, Branford C2_015-SB Wildlife NUTRIENTS

CT- LIS CB Shore - Morris Cove, New Habitat for Marine Fish, Other Aquatic Life and DISSOLVED OXYGEN C2_017-SB Haven Wildlife

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID

CT- LIS CB Shore - Morris Cove, New Habitat for Marine Fish, Other Aquatic Life and NUTRIENTS C2_017-SB Haven Wildlife

CT- LIS CB Shore - Morris Cove, New Habitat for Marine Fish, Other Aquatic Life and OIL AND GREASE C2_017-SB Haven Wildlife

CT- LIS CB Shore - Morris Cove, New Habitat for Marine Fish, Other Aquatic Life and POLYCHLORINATED BIPHENYLS (PCBS) C2_017-SB Haven Wildlife

CT- LIS CB Shore - New Haven Harbor Commercial Shellfish Harvesting Where FECAL COLIFORM C2_018-SB (West), West Haven Authorized

43 CT- LIS CB Shore - New Haven Harbor Habitat for Marine Fish, Other Aquatic Life and NUTRIENTS C2_018-SB (West), West Haven Wildlife

CT- LIS CB Shore - New Haven Harbor Habitat for Marine Fish, Other Aquatic Life and OIL AND GREASE C2_018-SB (West), West Haven Wildlife

CT- LIS CB Shore - New Haven Harbor Habitat for Marine Fish, Other Aquatic Life and POLYCHLORINATED BIPHENYLS (PCBS) C2_018-SB (West), West Haven Wildlife

CT- LIS CB Shore - New Haven Harbor Recreation ENTEROCOCCUS C2_018-SB (West), West Haven Shellfish Harvesting for Direct Consumption CT-C2_021 LIS CB Shore - Bayview, Milford FECAL COLIFORM Where Authorized

CT- LIS CB Shore - Housatonic River Commercial Shellfish Harvesting Where FECAL COLIFORM C2_024-SB mouth, Stratford Authorized

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID

CT- LIS CB Shore - Housatonic River Habitat for Marine Fish, Other Aquatic Life and COPPER C2_024-SB mouth, Stratford Wildlife

CT- LIS CB Shore - Housatonic River Habitat for Marine Fish, Other Aquatic Life and DIOXIN (INCLUDING 2,3,7,8-TCDD) C2_024-SB mouth, Stratford Wildlife

CT- LIS CB Shore - Housatonic River Habitat for Marine Fish, Other Aquatic Life and LEAD C2_024-SB mouth, Stratford Wildlife

CT- LIS CB Shore - Housatonic River Habitat for Marine Fish, Other Aquatic Life and POLYCHLORINATED BIPHENYLS (PCBS) C2_024-SB mouth, Stratford Wildlife

44 CT- LIS CB Shore - Housatonic River Habitat for Marine Fish, Other Aquatic Life and ZINC C2_024-SB mouth, Stratford Wildlife

Shellfish Harvesting for Direct Consumption CT-C3_005 LIS CB Midshore - Madison FECAL COLIFORM Where Authorized

CT- LIS CB Midshore - New Haven Habitat for Marine Fish, Other Aquatic Life and DISSOLVED OXYGEN C3_015-SB Harbor, New Haven Wildlife

CT- LIS CB Midshore - New Haven Habitat for Marine Fish, Other Aquatic Life and NUTRIENTS C3_015-SB Harbor, New Haven Wildlife

CT- LIS CB Midshore - New Haven Habitat for Marine Fish, Other Aquatic Life and OIL AND GREASE C3_015-SB Harbor, New Haven Wildlife

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID

CT- LIS CB Midshore - New Haven Habitat for Marine Fish, Other Aquatic Life and POLYCHLORINATED BIPHENYLS (PCBS) C3_015-SB Harbor, New Haven Wildlife

Habitat for Marine Fish, Other Aquatic Life and CT-C3_016 LIS CB Midshore - West Haven DISSOLVED OXYGEN Wildlife

Habitat for Marine Fish, Other Aquatic Life and CT-C3_016 LIS CB Midshore - West Haven NITROGEN, TOTAL Wildlife

Habitat for Marine Fish, Other Aquatic Life and CT-C3_016 LIS CB Midshore - West Haven NUTRIENTS Wildlife

45 Shellfish Harvesting for Direct Consumption CT-C3_016 LIS CB Midshore - West Haven FECAL COLIFORM Where Authorized

CT- LIS EB Inner - Pawcatuck River (01), Habitat for Marine Fish, Other Aquatic Life and DISSOLVED OXYGEN E1_001-SB Stonington Wildlife

CT- LIS EB Inner - Pawcatuck River (01), Habitat for Marine Fish, Other Aquatic Life and NUTRIENTS E1_001-SB Stonington Wildlife

CT- LIS EB Inner - Pawcatuck River (01), Recreation ENTEROCOCCUS E1_001-SB Stonington

CT- LIS EB Inner - Pawcatuck River (02), Habitat for Marine Fish, Other Aquatic Life and ALGAE E1_002-SB Stonington Wildlife

CT- LIS EB Inner - Pawcatuck River (02), Habitat for Marine Fish, Other Aquatic Life and NUTRIENTS E1_002-SB Stonington Wildlife

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID CT- LIS EB Inner - Pawcatuck River (02), Recreation ALGAE E1_002-SB Stonington CT- LIS EB Inner - Pawcatuck River (02), Recreation ESTUARINE BIOASSESSMENTS E1_002-SB Stonington

LIS EB Inner - Inner Wequetequock Habitat for Marine Fish, Other Aquatic Life and CT-E1_003 ALGAE Cove, Stonington Wildlife

LIS EB Inner - Inner Wequetequock Habitat for Marine Fish, Other Aquatic Life and CT-E1_003 ESTUARINE BIOASSESSMENTS Cove, Stonington Wildlife

LIS EB Inner - Inner Wequetequock CT-E1_003 Recreation ALGAE Cove, Stonington 46 LIS EB Inner - Inner Wequetequock CT-E1_003 Recreation ESTUARINE BIOASSESSMENTS Cove, Stonington

CT- LIS EB Inner - Mystic River (Mouth), Commercial Shellfish Harvesting Where FECAL COLIFORM E1_007-SB Stonington Authorized

CT- LIS EB Inner - Thames River Habitat for Marine Fish, Other Aquatic Life and DISSOLVED OXYGEN E1_014-SB (Mouth), New London Wildlife

CT- LIS EB Inner - Thames River Habitat for Marine Fish, Other Aquatic Life and ESTUARINE BIOASSESSMENTS E1_014-SB (Mouth), New London Wildlife

CT- LIS EB Inner - Thames River Commercial Shellfish Harvesting Where FECAL COLIFORM E1_015-SB (middle), Ledyard Authorized

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID

CT- LIS EB Inner - Thames River Habitat for Marine Fish, Other Aquatic Life and DISSOLVED OXYGEN E1_015-SB (middle), Ledyard Wildlife

CT- LIS EB Inner - Thames River Habitat for Marine Fish, Other Aquatic Life and ESTUARINE BIOASSESSMENTS E1_015-SB (middle), Ledyard Wildlife

CT- LIS EB Inner - Thames River Recreation ENTEROCOCCUS E1_015-SB (middle), Ledyard

CT- LIS EB Inner - Thames River (Upper), Commercial Shellfish Harvesting Where FECAL COLIFORM E1_016-SB Norwich Authorized

CT- LIS EB Inner - Thames River (Upper), Habitat for Marine Fish, Other Aquatic Life and DISSOLVED OXYGEN 47 E1_016-SB Norwich Wildlife

CT- LIS EB Inner - Thames River (Upper), Habitat for Marine Fish, Other Aquatic Life and ESTUARINE BIOASSESSMENTS E1_016-SB Norwich Wildlife

CT- LIS EB Inner - Thames River (Upper), Habitat for Marine Fish, Other Aquatic Life and NUTRIENTS E1_016-SB Norwich Wildlife

CT- LIS EB Inner - Thames River (Upper), Recreation ENTEROCOCCUS E1_016-SB Norwich

LIS EB Inner - Niantic River (mouth), Habitat for Marine Fish, Other Aquatic Life and CT-E1_020 CAUSE UNKNOWN Niantic Wildlife

LIS EB Inner - Niantic River (mouth), Habitat for Marine Fish, Other Aquatic Life and CT-E1_020 ESTUARINE BIOASSESSMENTS Niantic Wildlife

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID

LIS EB Inner - Niantic River (mouth), Habitat for Marine Fish, Other Aquatic Life and CT-E1_020 NUTRIENTS Niantic Wildlife

LIS EB Inner - Bride Brook, East Shellfish Harvesting for Direct Consumption CT-E1_022 FECAL COLIFORM Lyme Where Authorized

CT- LIS EB Inner - Connecticut River Fish Consumption POLYCHLORINATED BIPHENYLS (PCBS) E1_024-SB (mouth), Old Lyme CT- LIS EB Inner - Duck River, Old Lyme Recreation ENTEROCOCCUS E1_027-SB CT- LIS EB Inner - Lieutenant River, Old Recreation ENTEROCOCCUS E1_028-SB Lyme CT- LIS EB Inner - Connecticut River 48 Fish Consumption POLYCHLORINATED BIPHENYLS (PCBS) E1_029-SB (Lower), Essex CT- LIS EB Inner - Connecticut River Fish Consumption POLYCHLORINATED BIPHENYLS (PCBS) E1_031-SB (upper), Chester

LIS EB Inner - Pequotsepos Cove, Habitat for Marine Fish, Other Aquatic Life and CT-E1_033 DISSOLVED OXYGEN Stonington Wildlife

LIS EB Inner - Pequotsepos Cove, Shellfish Harvesting for Direct Consumption CT-E1_033 FECAL COLIFORM Stonington Where Authorized

LIS EB Shore - Wequetequock Cove, Habitat for Marine Fish, Other Aquatic Life and CT-E2_001 ALGAE Stonington Wildlife

LIS EB Shore - Wequetequock Cove, Habitat for Marine Fish, Other Aquatic Life and CT-E2_001 ESTUARINE BIOASSESSMENTS Stonington Wildlife

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID

LIS EB Shore - Wequetequock Cove, CT-E2_001 Recreation ALGAE Stonington

LIS EB Shore - Wequetequock Cove, CT-E2_001 Recreation ESTUARINE BIOASSESSMENTS Stonington

LIS EB Shore - Stonington Point, Habitat for Marine Fish, Other Aquatic Life and CT-E2_002 ALGAE Stonington Wildlife

LIS EB Shore - Stonington Point, Habitat for Marine Fish, Other Aquatic Life and CT-E2_002 ESTUARINE BIOASSESSMENTS Stonington Wildlife

LIS EB Shore - Stonington Point, 49 CT-E2_002 Recreation ALGAE Stonington LIS EB Shore - Stonington Point, CT-E2_002 Recreation ESTUARINE BIOASSESSMENTS Stonington

CT- LIS EB Shore - Thames River Mouth Habitat for Marine Fish, Other Aquatic Life and DISSOLVED OXYGEN E2_009-SB (East), Groton Wildlife

CT- LIS EB Shore - Thames River Mouth Habitat for Marine Fish, Other Aquatic Life and ESTUARINE BIOASSESSMENTS E2_009-SB (East), Groton Wildlife

CT- LIS EB Shore - Thames River Mouth Shellfish Harvesting for Direct Consumption FECAL COLIFORM E2_009-SB (East), Groton Where Authorized

CT- LIS EB Shore - Thames Rvr Mouth Commercial Shellfish Harvesting Where FECAL COLIFORM E2_010-SB (West), New London Authorized

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID

CT- LIS EB Shore - Thames Rvr Mouth Habitat for Marine Fish, Other Aquatic Life and DISSOLVED OXYGEN E2_010-SB (West), New London Wildlife

CT- LIS EB Shore - Thames Rvr Mouth Habitat for Marine Fish, Other Aquatic Life and ESTUARINE BIOASSESSMENTS E2_010-SB (West), New London Wildlife

CT- LIS EB Shore - Thames Rvr Mouth Habitat for Marine Fish, Other Aquatic Life and DISSOLVED OXYGEN E2_011-SB (West), Waterford Wildlife

CT- LIS EB Shore - Thames Rvr Mouth Habitat for Marine Fish, Other Aquatic Life and ESTUARINE BIOASSESSMENTS E2_011-SB (West), Waterford Wildlife

50 LIS EB Shore - Niantic Bay (East), Habitat for Marine Fish, Other Aquatic Life and CT-E2_013 CAUSE UNKNOWN Waterford Wildlife

LIS EB Shore - Niantic Bay (West), Habitat for Marine Fish, Other Aquatic Life and CT-E2_014 CAUSE UNKNOWN East Lyme Wildlife

LIS EB Shore - Niantic Bay (Black Pt), Habitat for Marine Fish, Other Aquatic Life and CT-E2_015 CAUSE UNKNOWN East Lyme Wildlife

Habitat for Marine Fish, Other Aquatic Life and CT-E3_001 LIS EB Midshore - Stonington ALGAE Wildlife

Habitat for Marine Fish, Other Aquatic Life and CT-E3_001 LIS EB Midshore - Stonington ESTUARINE BIOASSESSMENTS Wildlife

CT-E3_001 LIS EB Midshore - Stonington Recreation ALGAE

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID CT-E3_001 LIS EB Midshore - Stonington Recreation ESTUARINE BIOASSESSMENTS

CT- LIS EB Midshore - Waterford, Habitat for Marine Fish, Other Aquatic Life and DISSOLVED OXYGEN E3_005-SB Thames River Wildlife

CT- LIS EB Midshore - Waterford, Habitat for Marine Fish, Other Aquatic Life and ESTUARINE BIOASSESSMENTS E3_005-SB Thames River Wildlife

Habitat for Marine Fish, Other Aquatic Life and CT-E3_006 LIS EB Midshore - Niantic Bay CAUSE UNKNOWN Wildlife

CT- LIS WB Inner - Bridgeport Harbor, Habitat for Marine Fish, Other Aquatic Life and W1_001- DISSOLVED OXYGEN Bridgeport Wildlife 51 SB CT- LIS WB Inner - Bridgeport Harbor, Habitat for Marine Fish, Other Aquatic Life and W1_001- NUTRIENTS Bridgeport Wildlife SB CT- LIS WB Inner - Bridgeport Harbor, Habitat for Marine Fish, Other Aquatic Life and W1_001- POLYCHLORINATED BIPHENYLS (PCBS) Bridgeport Wildlife SB CT- POLYCYCLIC AROMATIC LIS WB Inner - Bridgeport Harbor, Habitat for Marine Fish, Other Aquatic Life and W1_001- HYDROCARBONS (PAHS) (AQUATIC Bridgeport Wildlife SB ECOSYSTEMS) CT- LIS WB Inner - Black Rock Harbor, Habitat for Marine Fish, Other Aquatic Life and W1_002- DISSOLVED OXYGEN Bridgeport Wildlife SB CT- LIS WB Inner - Black Rock Harbor, Habitat for Marine Fish, Other Aquatic Life and W1_002- ESTUARINE BIOASSESSMENTS Bridgeport Wildlife SB

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID CT- LIS WB Inner - Black Rock Harbor, Habitat for Marine Fish, Other Aquatic Life and W1_002- NUTRIENTS Bridgeport Wildlife SB CT- LIS WB Inner - Black Rock Harbor, Habitat for Marine Fish, Other Aquatic Life and W1_002- OIL AND GREASE Bridgeport Wildlife SB CT- LIS WB Inner - Black Rock Harbor, Habitat for Marine Fish, Other Aquatic Life and W1_002- POLYCHLORINATED BIPHENYLS (PCBS) Bridgeport Wildlife SB CT- POLYCYCLIC AROMATIC LIS WB Inner - Black Rock Harbor, Habitat for Marine Fish, Other Aquatic Life and W1_002- HYDROCARBONS (PAHS) (AQUATIC Bridgeport Wildlife SB ECOSYSTEMS) CT- 52 Commercial Shellfish Harvesting Where W1_003- LIS WB Inner - Ash Creek, Fairfield FECAL COLIFORM Authorized SB CT- Habitat for Marine Fish, Other Aquatic Life and W1_003- LIS WB Inner - Ash Creek, Fairfield GOLD Wildlife SB CT- Habitat for Marine Fish, Other Aquatic Life and W1_003- LIS WB Inner - Ash Creek, Fairfield SILVER Wildlife SB CT- W1_003- LIS WB Inner - Ash Creek, Fairfield Recreation ENTEROCOCCUS SB

CT- Shellfish Harvesting for Direct Consumption LIS WB Inner - Pine Creek, Fairfield FECAL COLIFORM W1_004 Where Authorized

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID

CT- Shellfish Harvesting for Direct Consumption LIS WB Inner - Mill River, Fairfield FECAL COLIFORM W1_006 Where Authorized

CT- LIS WB Inner - Sasco Brook, Shellfish Harvesting for Direct Consumption FECAL COLIFORM W1_007 Westport Where Authorized

CT- LIS WB Inner - Sasco Brook, ENTEROCOCCUS W1_007 Westport Recreation

CT- LIS WB Inner - Grays Creek, Shellfish Harvesting for Direct Consumption FECAL COLIFORM W1_009 Westport Where Authorized

CT- LIS WB Inner - Saugatuck River, ENTEROCOCCUS W1_011 Westport Recreation 53 CT- LIS WB Inner - Norwalk Harbor, Habitat for Marine Fish, Other Aquatic Life and W1_012- DISSOLVED OXYGEN Norwalk Wildlife SB CT- LIS WB Inner - Norwalk Harbor, Habitat for Marine Fish, Other Aquatic Life and W1_012- LEAD Norwalk Wildlife SB CT- LIS WB Inner - Norwalk Harbor, Habitat for Marine Fish, Other Aquatic Life and W1_012- MERCURY Norwalk Wildlife SB CT- LIS WB Inner - Norwalk Harbor, Habitat for Marine Fish, Other Aquatic Life and W1_012- NITROGEN, TOTAL Norwalk Wildlife SB CT- LIS WB Inner - Norwalk Harbor, Habitat for Marine Fish, Other Aquatic Life and W1_012- NUTRIENTS Norwalk Wildlife SB

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID CT- LIS WB Inner - Norwalk Harbor, W1_012- Recreation ENTEROCOCCUS Norwalk SB CT- LIS WB Inner - Norwalk Hrbr Habitat for Marine Fish, Other Aquatic Life and W1_013- DISSOLVED OXYGEN (MarvinBeach), Norwalk Wildlife SB CT- LIS WB Inner - Norwalk Hrbr Habitat for Marine Fish, Other Aquatic Life and W1_013- NITROGEN, TOTAL (MarvinBeach), Norwalk Wildlife SB CT- LIS WB Inner - Norwalk Hrbr Habitat for Marine Fish, Other Aquatic Life and W1_013- NUTRIENTS (MarvinBeach), Norwalk Wildlife SB CT- Commercial Shellfish Harvesting Where 54 W1_016- LIS WB Inner - Holly Pond, Stamford FECAL COLIFORM Authorized SB CT- LIS WB Inner - Stamford Harbor Habitat for Marine Fish, Other Aquatic Life and W1_018- DISSOLVED OXYGEN (Inner), Stamford Wildlife SB CT- LIS WB Inner - Stamford Harbor Habitat for Marine Fish, Other Aquatic Life and W1_018- NUTRIENTS (Inner), Stamford Wildlife SB

CT- LIS WB Inner - Indian Harbor Habitat for Marine Fish, Other Aquatic Life and DISSOLVED OXYGEN W1_020 (upper), Greenwich Wildlife

CT- LIS WB Inner - Indian Harbor Habitat for Marine Fish, Other Aquatic Life and NUTRIENTS W1_020 (upper), Greenwich Wildlife

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID CT- LIS WB Inner - Greenwich Harbor, Habitat for Marine Fish, Other Aquatic Life and W1_021- DISSOLVED OXYGEN Greenwich Wildlife SB CT- LIS WB Inner - Greenwich Harbor, Habitat for Marine Fish, Other Aquatic Life and W1_021- NUTRIENTS Greenwich Wildlife SB

CT- Shellfish Harvesting for Direct Consumption LIS WB Shore - Lordship, Stratford FECAL COLIFORM W2_001 Where Authorized

CT- LIS WB Shore - Long Beach, Shellfish Harvesting for Direct Consumption FECAL COLIFORM W2_002 Stratford Where Authorized

55 CT- LIS WB Shore - Seaside Park Beach, Shellfish Harvesting for Direct Consumption FECAL COLIFORM W2_003 Bridgeport Where Authorized

CT- LIS WB Shore - Pine Creek Point, Shellfish Harvesting for Direct Consumption FECAL COLIFORM W2_005 Fairfield Where Authorized

CT- LIS WB Shore - Outer Norwalk Habitat for Marine Fish, Other Aquatic Life and DISSOLVED OXYGEN W2_012 Harbor(East), Norwalk Wildlife

CT- LIS WB Shore - Outer Norwalk Habitat for Marine Fish, Other Aquatic Life and NITROGEN, TOTAL W2_012 Harbor(East), Norwalk Wildlife

CT- LIS WB Shore - Outer Norwalk Habitat for Marine Fish, Other Aquatic Life and NUTRIENTS W2_012 Harbor(East), Norwalk Wildlife

2020 IWQR Appendix B-1 List of Impaired Waters for Connecticut (EPA Category 5)

Waterbod y Segment Waterbody Name Impaired Designated Use Cause ID

CT- LIS WB Shore - Outer Norwalk Habitat for Marine Fish, Other Aquatic Life and DISSOLVED OXYGEN W2_013 Harbor(West), Norwalk Wildlife

CT- LIS WB Shore - Outer Norwalk Habitat for Marine Fish, Other Aquatic Life and NITROGEN, TOTAL W2_013 Harbor(West), Norwalk Wildlife

CT- LIS WB Shore - Outer Norwalk Habitat for Marine Fish, Other Aquatic Life and NUTRIENTS W2_013 Harbor(West), Norwalk Wildlife

CT- LIS WB Shore - Smith Cove, Indian Habitat for Marine Fish, Other Aquatic Life and DISSOLVED OXYGEN W2_023 Hrbr, Greenwich Wildlife

56 CT- LIS WB Shore - Smith Cove, Indian Habitat for Marine Fish, Other Aquatic Life and NUTRIENTS W2_023 Hrbr, Greenwich Wildlife

CT- LIS WB Shore - Smith Cove, Indian Shellfish Harvesting for Direct Consumption FECAL COLIFORM W2_023 Hrbr, Greenwich Where Authorized

CT- LIS WB Midshore - Outer Captain Habitat for Marine Fish, Other Aquatic Life and DISSOLVED OXYGEN W3_014 Harbor, Greenwich Wildlife

CT- LIS WB Midshore - Outer Captain Habitat for Marine Fish, Other Aquatic Life and NITROGEN, TOTAL W3_014 Harbor, Greenwich Wildlife

CT- LIS WB Midshore - Outer Captain Habitat for Marine Fish, Other Aquatic Life and ORGANIC ENRICHMENT (SEWAGE) W3_014 Harbor, Greenwich Wildlife BIOLOGICAL INDICATORS