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 |
|---|---|---|---|---|
| Northern Colorado WA | Wellington, CO | 4,675 | 101 | Clean |
| Warden City Of | Warden, WA | 4,674 | 219 | Clean |
| Lake Arrowhead Subdivision | Waleska, GA | 4,671 | 65 | - |
| Town of Browning | Browning, 08 | 4,671 | 12 | Clean |
| Philomath Public Works | Philomath, OR | 4,670 | 118 | Clean |
| Lazy Nine MUD 1B | Austin, TX | 4,669 | 13 | - |
| Harris County MUD 106 | Houston, TX | 4,668 | 1 | Clean |
| North Sagamore Water District | Sagamore Beach, MA | 4,668 | 21 | Detected |
| Fort Bend County MUD 5 | Katy, TX | 4,665 | 2 | - |
| Douglas Co RWD 3 | Berryton, KS | 4,663 | 37 | Detected |
| Madison County Water System | Danielsville, GA | 4,663 | 47 | - |
| Reid Road MUD 2 | The Woodlands, TX | 4,662 | 0 | Clean |
| Fulton Municipal Water System | Fulton, KY | 4,662 | 97 | Clean |
| Waleska | Waleska, GA | 4,657 | 37 | - |
| South Tawakoni WSC | Wills Point, TX | 4,653 | 15 | Detected |
| Friona Municipal Water System | Friona, TX | 4,653 | 51 | Clean |
| Scott City PWS | Scott City, MO | 4,653 | 26 | Detected |
| Marine City | Marine City, MI | 4,652 | 16 | Clean |
| Fawn Frazer Jt Water Auth | Natrona Heights, PA | 4,650 | 72 | Detected |
| Central Hooksett Water Pct | Hooksett, NH | 4,650 | 30 | Detected |
| Cass County PWSD 2 | Belton, MO | 4,650 | 22 | Detected |
| Beau Chene Water System | Mandeville, LA | 4,650 | 12 | Clean |
| Keenesburg Town Of | Keenesburg, CO | 4,650 | 161 | - |
| Windom | Windom, MN | 4,646 | 14 | Clean |
| Desoto, City Of | Desoto, KS | 4,645 | 52 | Detected |
| Golden State Water Co.-Clearlake System | Rancho Cordova, CA | 4,644 | 2 | Clean |
| Lake Panasoffkee Water Assn 2Wps | Lake Panasoffkee, FL | 4,642 | 35 | Detected |
| Harris Fort Bend Counties MUD 5 | Houston, TX | 4,641 | 4 | Clean |
| Twin Creeks Ssd | Payson, UT | 4,640 | 115 | - |
| Fort Bend County MUD 149 | Sugar Land, TX | 4,638 | 3 | - |
| Clintonville Utilities | Clintonville, WI | 4,635 | 228 | Clean |
| Gladstone | Gladstone, MI | 4,632 | 48 | Detected |
| Randleman, City Of | Randleman, NC | 4,631 | 138 | Detected |
| Nashville | Nashville, GA | 4,631 | 156 | Clean |
| Spencer Water Dept | Spencer, WV | 4,630 | 103 | Clean |
| Coeburn, Town Of | Coeburn, VA | 4,630 | 63 | Clean |
| West Hardin WSC | Saratoga, TX | 4,630 | 52 | Clean |
| Crestline Village | Crestline, OH | 4,630 | 19 | Clean |
| Community WSC | Azle, TX | 4,629 | 48 | Detected |
| Hodgenville Water Works | Hodgenville, KY | 4,629 | 126 | Clean |
| West Blocton, Town Of | West Blocton, AL | 4,629 | 21 | Clean |
| Hampden Water District | Hampden, ME | 4,628 | 14 | Clean |
| Chilhowie, Town Of | Chilhowie, VA | 4,625 | 43 | Clean |
| Raymond Water Department | Raymond, WA | 4,620 | 25 | Clean |
| Elm Creek WSC | Moody, TX | 4,620 | 198 | Clean |
| Piggott Waterworks | Piggott, AR | 4,620 | 42 | Clean |
| City of Trinity | Trinity, TX | 4,619 | 155 | - |
| Harris County MUD 185 | Houston, TX | 4,617 | 8 | Detected |
| PA American Water Kittanning | New Castle, PA | 4,617 | 9 | Clean |
| Altus Afb | Altus, OK | 4,617 | 161 | Detected |