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

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1 Appendix B-1. List of Impaired Waters for Connecticut (EPA Category 5) 1 Appendix B-1. List of Impaired Waters for Connecticut (EPA Category 5) 2018 IWQR Connecticut Impaired Waters List (EPA Category 5) See Table 3-3 (IWQR Chapter 3) for common sources of Impaired Designated Uses. Waterbody Segment Waterbody Name Impaired Designated Use Cause ID CT1001-00-1-L1_01 Wyassup Lake (North Stonington) Fish Consumption MERCURY Habitat for Fish, Other Aquatic Life and CT2000-30_01 Fenger Brook (Waterford)-01 Wildlife CAUSE UNKNOWN CT2202-00_01 Latimer Brook (East Lyme)-01 Recreation ESCHERICHIA COLI (E. COLI) CT2204-03_01 Stony Brook (Waterford)-01 Recreation ESCHERICHIA COLI (E. COLI) CT2205-02-1-L1_01 Dodge Pond (East Lyme) Fish Consumption MERCURY CT3002-02-1-L2_01 Amos Lake (Preston) Recreation ALGAE 2 CT3002-02-1-L2_01 Amos Lake (Preston) Recreation CHLOROPHYLL-A CT3002-02-1-L2_01 Amos Lake (Preston) Recreation NUTRIENTS Habitat for Fish, Other Aquatic Life and CT3004-00_01 Oxoboxo Brook-01 Wildlife CAUSE UNKNOWN Habitat for Fish, Other Aquatic Life and CT3006-00_01 Hunts Brook (Waterford)-01 Wildlife CAUSE UNKNOWN CT3100-00_03 Willimantic River (Willington/Tolland)-03 Recreation ESCHERICHIA COLI (E. COLI) Willimantic River Habitat for Fish, Other Aquatic Life and CT3100-00_05 (Tolland/Willington/Ellington/Stafford)-05 Wildlife CAUSE UNKNOWN CT3200-00_02 Natchaug River (Eastford)-02 Recreation ESCHERICHIA COLI (E. COLI) 2018 IWQR Connecticut Impaired Waters List (EPA Category 5) See Table 3-3 (IWQR Chapter 3) for common sources of Impaired Designated Uses. Waterbody Segment Waterbody Name Impaired Designated Use Cause ID Habitat for Fish, Other Aquatic Life and CT3207-12_01 Roberts Brook (Mansfield)-01 Wildlife CAUSE UNKNOWN CT3208-00_01 Sawmill Brook (Mansfield)-01 Recreation ESCHERICHIA COLI (E. COLI) CT3208-02_01 Conantville Brook (Mansfield)-01 Recreation ESCHERICHIA COLI (E. COLI) CT3300-10_01 Quinatissett Brook (Thompson)-01 Recreation ESCHERICHIA COLI (E. COLI) Habitat for Fish, Other Aquatic Life and CT3700-00_01 Quinebaug River (Lisbon/Griswold)-01 Wildlife CAUSE UNKNOWN Habitat for Fish, Other Aquatic Life and CT3700-00_04 Quinebaug River (Putnam)-04 Wildlife CAUSE UNKNOWN 3 Habitat for Fish, Other Aquatic Life and CT3700-00_05 Quinebaug River (Putnam/Thompson)-05 Wildlife CAUSE UNKNOWN CT3700-00_05 Quinebaug River (Putnam/Thompson)-05 Recreation ESCHERICHIA COLI (E. COLI) Habitat for Fish, Other Aquatic Life and CT3700-00-2+L1_01 West Thompson Lake (Thompson) Wildlife ALGAE Habitat for Fish, Other Aquatic Life and CT3700-00-2+L1_01 West Thompson Lake (Thompson) Wildlife CHLOROPHYLL-A Habitat for Fish, Other Aquatic Life and CT3700-00-2+L1_01 West Thompson Lake (Thompson) Wildlife NUTRIENTS CT3700-00-2+L1_01 West Thompson Lake (Thompson) Recreation ALGAE 2018 IWQR Connecticut Impaired Waters List (EPA Category 5) See Table 3-3 (IWQR Chapter 3) for common sources of Impaired Designated Uses. Waterbody Segment Waterbody Name Impaired Designated Use Cause ID CT3700-00-2+L1_01 West Thompson Lake (Thompson) Recreation CHLOROPHYLL-A CT3700-00-2+L1_01 West Thompson Lake (Thompson) Recreation NUTRIENTS CT3700-00-5+L4_01 Aspinook Pond (Canterbury/Griswold/Lisbon) Recreation ALGAE CT3700-00-5+L4_01 Aspinook Pond (Canterbury/Griswold/Lisbon) Recreation CHLOROPHYLL-A CT3700-00-5+L4_01 Aspinook Pond (Canterbury/Griswold/Lisbon) Recreation NUTRIENTS CT3700-17_01 Durkee Brook (Pomfret)-01 Recreation ESCHERICHIA COLI (E. COLI) 4 CT3708-00_01 Little River (Putnam/Woodstock)-01 Recreation ESCHERICHIA COLI (E. COLI) CT3708-00-1-L1_01 Roseland Lake (Woodstock) Recreation NUTRIENTS CT3708-18_01 Wheatons Brook (Putnam/Thompson)-01 Recreation ESCHERICHIA COLI (E. COLI) CT3709-00_01 Wappaquoia Brook-01 Recreation ESCHERICHIA COLI (E. COLI) CT3709-02_01 Day Brook (Pomfret)-01 Recreation ESCHERICHIA COLI (E. COLI) CT3800-00_01 Shetucket River (Norwich)-01 Recreation ESCHERICHIA COLI (E. COLI) CT3800-00-6+L3_01 Spaulding Pond (Norwich) Recreation ESCHERICHIA COLI (E. COLI) CT3805-00_02 Little River (Sprague)-02 Fish Consumption MERCURY 2018 IWQR Connecticut Impaired Waters List (EPA Category 5) See Table 3-3 (IWQR Chapter 3) for common sources of Impaired Designated Uses. Waterbody Segment Waterbody Name Impaired Designated Use Cause ID POLYCHLORINATED BIPHENYLS CT3805-00_02 Little River (Sprague)-02 Fish Consumption (PCBS) Habitat for Fish, Other Aquatic Life and CT3805-00_02 Little River (Sprague)-02 Wildlife CAUSE UNKNOWN Habitat for Fish, Other Aquatic Life and CT3805-00_02 Little River (Sprague)-02 Wildlife WHOLE EFFLUENT TOXICITY (WET) CT3805-00-3-L6_01 Papermill Pond (Sprague) Fish Consumption MERCURY POLYCHLORINATED BIPHENYLS CT3805-00-3-L6_01 Papermill Pond (Sprague) Fish Consumption (PCBS) 5 CT3805-00-3-L7_01 Versailles Pond (Sprague) Fish Consumption MERCURY POLYCHLORINATED BIPHENYLS CT3805-00-3-L7_01 Versailles Pond (Sprague) Fish Consumption (PCBS) Habitat for Fish, Other Aquatic Life and CT3805-00-3-L7_01 Versailles Pond (Sprague) Wildlife NUTRIENTS Unnamed Trib, Yantic River (Norwich Landfill)- Habitat for Fish, Other Aquatic Life and CT3900-00_trib_01 01 Wildlife AMMONIA, UN-IONIZED Unnamed Trib, Yantic River (Norwich Landfill)- Habitat for Fish, Other Aquatic Life and CT3900-00_trib_01 01 Wildlife COPPER Unnamed Trib, Yantic River (Norwich Landfill)- Habitat for Fish, Other Aquatic Life and CT3900-00_trib_01 01 Wildlife DISSOLVED OXYGEN Unnamed Trib, Yantic River (Norwich Landfill)- Habitat for Fish, Other Aquatic Life and CT3900-00_trib_01 01 Wildlife LEAD 2018 IWQR Connecticut Impaired Waters List (EPA Category 5) See Table 3-3 (IWQR Chapter 3) for common sources of Impaired Designated Uses. Waterbody Segment Waterbody Name Impaired Designated Use Cause ID Unnamed Trib, Yantic River (Norwich Landfill)- Habitat for Fish, Other Aquatic Life and CT3900-00_trib_01 01 Wildlife NUTRIENTS Unnamed Trib, Yantic River (Norwich Landfill)- Habitat for Fish, Other Aquatic Life and ORGANIC ENRICHMENT (SEWAGE) CT3900-00_trib_01 01 Wildlife BIOLOGICAL INDICATORS CT3900-00- Habitat for Fish, Other Aquatic Life and UL_pond_01 Browning Pond (Norwich Landfill)-01 Wildlife AMMONIA, UN-IONIZED CT3900-00- Habitat for Fish, Other Aquatic Life and UL_pond_01 Browning Pond (Norwich Landfill)-01 Wildlife COPPER CT3900-00- Habitat for Fish, Other Aquatic Life and UL_pond_01 Browning Pond (Norwich Landfill)-01 Wildlife DISSOLVED OXYGEN CT3900-00- Habitat for Fish, Other Aquatic Life and 6 UL_pond_01 Browning Pond (Norwich Landfill)-01 Wildlife LEAD CT3900-00- Habitat for Fish, Other Aquatic Life and UL_pond_01 Browning Pond (Norwich Landfill)-01 Wildlife NUTRIENTS CT3900-00- Habitat for Fish, Other Aquatic Life and ORGANIC ENRICHMENT (SEWAGE) UL_pond_01 Browning Pond (Norwich Landfill)-01 Wildlife BIOLOGICAL INDICATORS Habitat for Fish, Other Aquatic Life and CT3900-07_01 Kahn Brook (Bozrah)-01 Wildlife CAUSE UNKNOWN Habitat for Fish, Other Aquatic Life and CT3900-07_01 Kahn Brook (Bozrah)-01 Wildlife PHOSPHORUS, TOTAL CT3900-07_01 Kahn Brook (Bozrah)-01 Recreation ESCHERICHIA COLI (E. COLI) CT3902-00_02 Bartlett Brook (Lebanon)-02 Recreation ESCHERICHIA COLI (E. COLI) 2018 IWQR Connecticut Impaired Waters List (EPA Category 5) See Table 3-3 (IWQR Chapter 3) for common sources of Impaired Designated Uses. Waterbody Segment Waterbody Name Impaired Designated Use Cause ID CT3905-00_01a Pease Brook (Bozrah/Franklin/Lebanon)-01a Recreation ESCHERICHIA COLI (E. COLI) CT3907-00_01 Susquetonscut Brook-01 Recreation ESCHERICHIA COLI (E. COLI) POLYCHLORINATED BIPHENYLS CT4000-00_01 Connecticut River-01 Fish Consumption (PCBS) POLYCHLORINATED BIPHENYLS CT4000-00_02 Connecticut River-02 Fish Consumption (PCBS) CT4000-00_02 Connecticut River-02 Recreation ESCHERICHIA COLI (E. COLI) POLYCHLORINATED BIPHENYLS CT4000-00_03 Connecticut River (Portland/Suffield)-03 Fish Consumption (PCBS) 7 Habitat for Fish, Other Aquatic Life and CT4004-02_01 Farm Brook (South Windsor)-01 Wildlife CAUSE UNKNOWN Habitat for Fish, Other Aquatic Life and CT4013-00_02 Sumner Brook (Middletown)-02 Wildlife CAUSE UNKNOWN CT4013-05-1-L1_01 Crystal Lake (Middletown) Recreation ESCHERICHIA COLI (E. COLI) Habitat for Fish, Other Aquatic Life and CT4100-00_01 Stony Brook (Suffield)-01 Wildlife CAUSE UNKNOWN Habitat for Fish, Other Aquatic Life and CT4100-00_03 Stony Brook (Suffield)-03 Wildlife CAUSE UNKNOWN Habitat for Fish, Other Aquatic Life and CT4101-00_01 Muddy Brook (Suffield)-01 Wildlife CAUSE UNKNOWN 2018 IWQR Connecticut Impaired Waters List (EPA Category 5) See Table 3-3 (IWQR Chapter 3) for common sources of Impaired Designated Uses. Waterbody Segment Waterbody Name Impaired Designated Use Cause ID Habitat for Fish, Other Aquatic Life and CT4200-00_01 Scantic River-01 Wildlife CAUSE UNKNOWN CT4200-00_01 Scantic River-01 Recreation ESCHERICHIA COLI (E. COLI) CT4200-00_02 Scantic River-02 Recreation ESCHERICHIA COLI (E. COLI) CT4200-00_03 Scantic River-03 Recreation ESCHERICHIA COLI (E. COLI) CT4200-15_01 Thrasher Brook (Somers)-01 Recreation ESCHERICHIA COLI (E. COLI) CT4200-28_01 Dry Brook (South Windsor/East Windsor)-01 Recreation ESCHERICHIA COLI (E. COLI) 8 CT4202-00_01 Gillettes Brook (Somers)-01 Recreation ESCHERICHIA COLI (E. COLI) CT4203-00_01 Gulf Stream (Somers)-01 Recreation ESCHERICHIA COLI (E. COLI) CT4204-00_01 Abbey Brook (Somers)-01 Recreation ESCHERICHIA COLI (E. COLI) Habitat for Fish, Other Aquatic Life and CT4206-00_01 Broad Brook (East Windsor)-01 Wildlife CAUSE UNKNOWN Habitat for Fish, Other Aquatic Life and CT4206-00_02 Broad Brook (East Windsor-Ellington)-02 Wildlife CAUSE UNKNOWN CT4300-00_01 Farmington River (Windsor)-01
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