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 |
|---|---|---|---|---|
| Andalusia, Utilities Board Of | Andalusia, AL | 15,252 | 81 | Detected |
| Norridge | Norridge, IL | 15,251 | 32 | Clean |
| Cahokia Heights | Cahokia Heights, IL | 15,250 | 0 | Detected |
| Usmc - 29 Palms | 29 Palms, CA | 15,248 | 11 | Clean |
| East Lyme Water & Sewer Commission | Niantic, CT | 15,245 | 532 | Detected |
| Farmington Rural-Shiprock-Beclabito NTUA | Ft Defiance, NN | 15,233 | 154 | Clean |
| Charles Town Utilities | Charles Town, WV | 15,220 | 693 | Clean |
| Cliffdale West | Cary, NC | 15,220 | 343 | Detected |
| Bethalto | Bethalto, IL | 15,210 | 25 | Detected |
| City of Mabank | Mabank, TX | 15,207 | 67 | Detected |
| Ramsey Water Dept | Ramsey, NJ | 15,207 | 746 | Detected |
| Grand Prairie Regional Water | Stuttgart, AR | 15,204 | 33 | Clean |
| IL American-Lincoln | Godfrey, IL | 15,200 | 31 | Detected |
| City of Livingston | Livingston, TX | 15,199 | 20 | Detected |
| Artesia Municipal Water System | Artesia, NM | 15,176 | 184 | Clean |
| Swampscott Water Dept. (Mwra) | Swampscott, MA | 15,175 | 28 | Clean |
| Black Hawk City Of | Black Hawk, CO | 15,167 | 239 | Clean |
| Marana Municipal - Marana | Marana, AZ | 15,162 | 177 | Detected |
| Coto Sur | Santurce, PR | 15,158 | 38 | - |
| City of la Marque | La Marque, TX | 15,154 | 25 | Detected |
| Franklin Water Works | Franklin, KY | 15,150 | 322 | Detected |
| Bemidji | Bemidji, MN | 15,147 | 8 | Clean |
| Menasha Elec & Water Util | Menasha, WI | 15,144 | 18 | Clean |
| Lpwd South | Duson, LA | 15,132 | 16 | Clean |
| Bainbridge | Bainbridge, GA | 15,125 | 25 | Clean |
| Southern Water & Sewer District | McDoqwell, KY | 15,110 | 194 | Clean |
| Streetsboro City PWS | Streetsboro, OH | 15,105 | 8 | Clean |
| Sterling City Of | Sterling, CO | 15,100 | 279 | Clean |
| Kelso City Of | Kelso, WA | 15,097 | 13 | Clean |
| Dixon | Dixon, IL | 15,096 | 280 | Clean |
| Citizens Water Service, Inc. | Vance, AL | 15,096 | 24 | Clean |
| Madisonville Water Dept | Madisonville, TN | 15,087 | 35 | Clean |
| Monticello | Monticello, MN | 15,087 | 9 | Detected |
| Americus | Americus, GA | 15,082 | 22 | Clean |
| City of West Point | West Point, MS | 15,062 | 709 | Clean |
| Macomb | Macomb, IL | 15,052 | 195 | Clean |
| Grand Haven Township | Grand Haven, MI | 15,051 | 11 | Clean |
| Montgomery County MUD 60 | The Woodlands, TX | 15,036 | 33 | Clean |
| Boone County PWSD 9 | Columbia, MO | 15,035 | 90 | Clean |
| Thousand Pines Christian | Crestline, CA | 15,034 | 5 | - |
| South Montebello Irrigation Dist. | Montebello, CA | 15,021 | 13 | Detected |
| Caldwell Co Water System-SE | Lenoir, NC | 15,007 | 42 | - |
| Lewiston City Of | Lewiston, ID | 15,001 | 2 | Detected |
| Front Royal, Town Of | Front Royal, VA | 15,000 | 80 | Clean |
| Holliday Water Company | Salt Lake City, UT | 15,000 | 1,132 | Clean |
| Lagoon Investment Company | Farmington, UT | 15,000 | 19 | Clean |
| East Biggs Water System | San Dimas, TX | 15,000 | 16 | Detected |
| Wickson Creek Sud | Bryan, TX | 15,000 | 30 | Detected |
| Creswell Heights Jt Auth | South Heights, PA | 15,000 | 83 | Clean |
| Perkasie Regional Authority | Sellersville, PA | 15,000 | 735 | Detected |