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 |
|---|---|---|---|---|
| Longwood, City of (2 Wps) | Longwood, FL | 23,237 | 88 | Clean |
| Oakdale, City Of | Oakdale, CA | 23,235 | 19 | Clean |
| Watertown Municipal Utilities | Watertown, SD | 23,230 | 10 | Clean |
| Hastings | Hastings, MN | 23,222 | 24 | Detected |
| City of Corinth | Corinth, TX | 23,213 | 46 | Detected |
| Draper City Water System | Bluffdale, UT | 23,205 | 65 | Clean |
| Ecwa West Seneca | Buffalo, NY | 23,181 | 0 | - |
| Broad Creek | Millersville, MD | 23,179 | 8 | Clean |
| PA-American Water- Uniontown | Uniontown, PA | 23,125 | 62 | Clean |
| Easton Water Div | South Easton, MA | 23,112 | 6 | Detected |
| City of Stephenville | Stephenville, TX | 23,110 | 39 | Clean |
| Valley of the Moon Water District | El Verano, CA | 23,107 | 9 | Detected |
| Lockport | Lockport, IL | 23,100 | 197 | Detected |
| City of Marshall | Marshall, TX | 23,091 | 145 | Detected |
| Chatham Co-North | Sanford, NC | 23,088 | 321 | Detected |
| Baldwin County | Milledgeville, GA | 23,067 | 99 | Clean |
| Fernley Public Works | Fernley, NV | 23,064 | 451 | Detected |
| Cross Valley Water District | Snohomish, WA | 23,054 | 33 | Detected |
| Clinton City Water System | Clinton, UT | 23,000 | 110 | Clean |
| Owasso | Owasso, OK | 23,000 | 81 | Clean |
| Fort Sill Hqusafacfs | Fort Sill, OK | 23,000 | 40 | Clean |
| Duncan Public Utilities Authority | Duncan, OK | 23,000 | 844 | Detected |
| Elko City Of | Elko, NV | 23,000 | 95 | Detected |
| Eastern Pines Water Corp | Greenville, NC | 23,000 | 36 | Detected |
| Golden Valley | Golden Valley, MN | 23,000 | 4 | Detected |
| Sandwich Water District | Sandwich, MA | 23,000 | 22 | Clean |
| Great Lakes Naval Training Station | Great Lakes, IL | 23,000 | 38 | Clean |
| Yorkville | Yorkville, IL | 23,000 | 324 | Clean |
| Winchester Water Dept | Winchester, MA | 22,970 | 62 | Clean |
| El Monte-City, Water Dept. | El Monte, CA | 22,968 | 21 | Detected |
| Johnston Co-East | Smithfield, NC | 22,967 | 3 | Detected |
| Crystal | Crystal, MN | 22,937 | 3 | Detected |
| City of Portland | Portland, TX | 22,933 | 17 | Detected |
| Harris County Water System | Cataula, GA | 22,922 | 26 | Detected |
| Bedford County U.d. | Shelbyville, TN | 22,908 | 190 | Detected |
| Auburn Water System | Crestview, FL | 22,903 | 45 | Clean |
| New Brighton | New Brighton, MN | 22,902 | 16 | Detected |
| Roselle | Roselle, IL | 22,897 | 42 | Clean |
| Lugoff Elgin Water Auth (Sc2820001) | Lugoff, SC | 22,873 | 76 | Detected |
| Corcoran, City Of | Corcoran, CA | 22,808 | 18 | Clean |
| City of Millbrae | Millbrae, CA | 22,795 | 0 | Clean |
| GRIC DPW Wild Horse Pass | Sacaton, 09 | 22,795 | 72 | Clean |
| Bridgeton City Water Dept | Bridgeton, NJ | 22,770 | 926 | Clean |
| Cws - North Garden | San Jose, CA | 22,762 | 0 | Detected |
| Wasco, City Of | Wasco, CA | 22,757 | 30 | Clean |
| Ctwc - Naugatuck Region-Central System | Clinton, CT | 22,735 | 15 | Clean |
| Van Buren Waterworks | Van Buren, AR | 22,725 | 30 | Clean |
| Sheridan, City Of | Sheridan, WY | 22,700 | 22 | Clean |
| City of Pascagoula | Pascagoula, MS | 22,686 | 295 | Clean |
| Wilson Co Water & Wastewater | Lebanon, TN | 22,680 | 60 | Detected |