Public Water Systems
143,076 active public water systems, tracked from EPA's Safe Drinking Water Information System (SDWIS) across all 50 states. See our methodology.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| Winona | Winona, MN | 27,782 | 47 | Clean |
| North Kingstown Town Of | North Kingstown, RI | 27,732 | 321 | Detected |
| Wannacomet Water Company | Nantucket, MA | 27,703 | 197 | Clean |
| City of Midlothian | Midlothian, TX | 27,699 | 35 | Detected |
| Natchitoches Water System | Natchitoches, LA | 27,693 | 88 | Detected |
| New Lenox | New Lenox, IL | 27,690 | 41 | Clean |
| Chilton Water Authority | Thorsby, AL | 27,681 | 63 | Clean |
| Widefield WSD | Colorado Springs, CO | 27,640 | 232 | Detected |
| Lafollette Utilities Board | Lafollette, TN | 27,637 | 43 | Clean |
| Garden City | Garden City, MI | 27,625 | 11 | Clean |
| New London Dept. of Public Utilities | Waterford, CT | 27,620 | 203 | Clean |
| Lakewood Twp Mua | Lakewood, NJ | 27,614 | 84 | Detected |
| Marshalltown Water Works | Marshalltown, IA | 27,591 | 28 | Clean |
| Tifton-Tift County Water System | Tifton, GA | 27,589 | 5 | Clean |
| USA-Fort Stewart Main | Fort Stewart, GA | 27,573 | 38 | Clean |
| IL American-Granite City | Godfrey, IL | 27,549 | 3 | Detected |
| Plymouth Township | Plymouth, MI | 27,524 | 8 | Clean |
| Neenah Waterworks | Neenah, WI | 27,506 | 46 | Clean |
| City of Denison | Denison, TX | 27,500 | 67 | Clean |
| Plum Boro Muni Auth | Pittsburgh, PA | 27,500 | 50 | Clean |
| Millville Water Department | Millville, NJ | 27,500 | 464 | Detected |
| Oak Forest | Oak Forest, IL | 27,478 | 24 | Detected |
| Fridley | Fridley, MN | 27,476 | 11 | Detected |
| Kinston, City Of | Kinston, NC | 27,475 | 32 | Detected |
| Asheboro, City Of | Asheboro, NC | 27,472 | 19 | Detected |
| Quebradillas Urbano | Quebradillas, PR | 27,458 | 838 | Clean |
| Livingston Twp Div of Water | Livingston, NJ | 27,391 | 547 | Detected |
| Csu Main and West Housing Campus | Fort Collins, CO | 27,375 | 50 | Clean |
| Van Buren Township | Van Buren Township, MI | 27,359 | 7 | Clean |
| Reading Water Department (Mwra) | Reading, MA | 27,358 | 7 | Clean |
| Mason City Water Department | Mason City, IA | 27,338 | 647 | Clean |
| City of Angleton | Angleton, TX | 27,333 | 95 | Detected |
| City of Lake Jackson | Lake Jackson, TX | 27,314 | 12 | Detected |
| Rahway Water Department | Rahway, NJ | 27,300 | 65 | Detected |
| Bangor Water District | Bangor, ME | 27,298 | 8 | Clean |
| Belmont Water Dept. (Mwra) | Belmont, MA | 27,295 | 11 | Clean |
| Placer Cwa - Auburn/Bowman | Auburn, CA | 27,294 | 0 | Clean |
| Thomasville, City Of | Thomasville, NC | 27,287 | 39 | Detected |
| City of Big Spring | Big Spring, TX | 27,282 | 253 | Detected |
| Centerton Waterworks | Centerton, AR | 27,243 | 82 | Clean |
| Fremont, City Of | Fremont, NE | 27,230 | 15 | Detected |
| Morganton City Of | Morganton, NC | 27,221 | 31 | Clean |
| Round Lake Beach | Round Lake Beach, IL | 27,200 | 38 | Clean |
| University of Connecticut - Main Campus | Storrs, CT | 27,199 | 66 | Detected |
| Lemoore, City Of | Lemoore, CA | 27,185 | 124 | Clean |
| Auburn | Auburn, NY | 27,179 | 2 | Clean |
| Iredell Water Corporation | Statesville, NC | 27,173 | 1,234 | Detected |
| Ponca City Mun Water | Ponca City, OK | 27,155 | 98 | Detected |
| City of Benicia | Benicia, CA | 27,131 | 7 | Detected |
| City of Pearl | Pearl, MS | 27,115 | 875 | Clean |