PlainWater

Public Water Systems

2,332 active public water systems in CT, tracked from EPA's Safe Drinking Water Information System (SDWIS) across all 50 states. See our methodology.

Population Violations Health Violations Name
System Name Location Population Violations PFAS
Regional Water Authority New Haven, CT 418,900 62 Detected
Metropolitan District Commission Hartford, CT 390,887 3 Clean
Aquarion-Eastern Fairfield County Shelton, CT 351,756 585 Detected
Aquarion-Stamford Shelton, CT 119,214 136 Detected
Waterbury Water Department Waterbury, CT 107,271 35 Clean
Ctwc - Northern Reg-Western System Clinton, CT 101,313 406 Detected
New Britain Water Department New Britain, CT 73,534 34 Clean
Danbury Water Department Danbury, CT 62,055 326 Detected
Meriden Water Division Meriden, CT 58,441 119 Detected
Aquarion-Greenwich Shelton, CT 53,297 114 Detected
Bristol Water Department Bristol, CT 52,079 269 Detected
Manchester Water Department Manchester, CT 51,198 31 Detected
Southington Water Department Southington, CT 43,069 1,028 Detected
South Norwalk Electric & Water Wilton, CT 42,000 215 Clean
Middletown Water Department Middletown, CT 41,019 26 Clean
Norwalk First Taxing District Norwalk, CT 40,256 6 Detected
Torrington Water Company Shelton, CT 37,915 105 Clean
Wallingford Water Department Wallingford, CT 37,267 188 Detected
Norwich Public Utilities Norwich, CT 36,163 97 Detected
Ctwc - Shoreline Region-Guilford System Clinton, CT 33,975 575 Detected
Groton Utilities Groton, CT 30,200 6 Clean
New London Dept. of Public Utilities Waterford, CT 27,620 203 Clean
University of Connecticut - Main Campus Storrs, CT 27,199 66 Detected
Ctwc - Naugatuck Region-Central System Clinton, CT 22,735 15 Clean
Windham Water Works Mansfield Center, CT 21,214 37 Detected
Aquarion-Darien Shelton, CT 18,737 8 Detected
Hazardville Water Company Enfield, CT 18,544 119 Detected
Aquarion-Plainville Regional Shelton, CT 18,231 63 Detected
Waterford Wpca Waterford, CT 16,578 104 Clean
East Lyme Water & Sewer Commission Niantic, CT 15,245 532 Detected
Ctwc - Unionville System Clinton, CT 14,693 27 Detected
Aquarion-Simsbury Regional Shelton, CT 14,691 200 Detected
Cromwell Fire District Water Department Cromwell, CT 14,316 232 Detected
Aquarion-New Milford Regional Shelton, CT 13,331 126 Detected
Aquarion-Valley Shelton, CT 13,080 26 Detected
Avon Water Co Clinton, CT 11,590 476 Detected
Aquarion-Mystic Shelton, CT 10,788 162 Detected
Aquarion-New Canaan Shelton, CT 10,097 30 Detected
Watertown Water & Sewer Authority Oakville, CT 9,972 144 Clean
Bethel Water Dept Bethel, CT 9,507 248 Detected
Winsted Water Works Winsted, CT 7,784 191 Clean
Kensington Fire District Kensington, CT 7,553 96 Clean
Aquarion-Ridgefield Shelton, CT 7,476 93 Detected
Putnam Water Pollution Control Authority Putnam, CT 7,300 453 Detected
Heritage Water Company Clinton, CT 7,300 80 Detected
Jewett City Water Company Enfield, CT 6,840 134 Detected
Watertown Fire District Watertown, CT 6,718 178 Clean
Ctwc - Crystal System Clinton, CT 6,378 305 Detected
Ctwc - Naugatuck Reg-Collinsville Sys Clinton, CT 6,324 66 Detected
Aquarion-Newtown Regional Shelton, CT 6,054 38 Detected
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