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 |
|---|---|---|---|---|
| Olin Winchester LLC | East Alton, IL | 3,250 | 151 | - |
| Winter Park Ranch WSD | Fraser, CO | 3,250 | 17 | - |
| Pinetop Water Community Facilities Dist | Pinetop, AZ | 3,250 | 430 | - |
| Muckleshoot | Auburn, 10 | 3,250 | 104 | - |
| Coeur D'alene Casino | Worley, 10 | 3,250 | 45 | - |
| St Martin Water Works District 3 - Cade | St. Martinville, LA | 3,249 | 63 | - |
| Lewisport Municipal Water Works | Lewisport, KY | 3,249 | 100 | - |
| Marlborough Water District | Milton, NY | 3,248 | 86 | - |
| Village of Hessmer Water System | Hessmer, LA | 3,246 | 25 | - |
| Hiawatha, City Of | Hiawatha, KS | 3,246 | 220 | - |
| Louisiana PWS | Louisiana, MO | 3,244 | 213 | Clean |
| Plymouth Water System | Plymouth, NC | 3,243 | 184 | Clean |
| Mount Vernon | Mt. Vernon, GA | 3,243 | 182 | - |
| Saguaro Water Company | Tucson, AZ | 3,243 | 156 | - |
| Ragland, the Wwb of the Town Of | Ragland, AL | 3,243 | 6 | - |
| Lubbock-Cooper Isd | Lubbock, TX | 3,242 | 174 | - |
| Darien Water System | Darien, GA | 3,242 | 53 | - |
| Keystone Summit Lodge | Keystone, CO | 3,241 | 16 | - |
| Lasalle Waterworks District 1 | Trout, LA | 3,240 | 51 | - |
| Indian Head Park | Indian Head Park, IL | 3,240 | 25 | - |
| Lake Don Pedro Csd | La Grange, CA | 3,240 | 58 | - |
| Elbridge Water Association | Hornbeak, TN | 3,239 | 30 | - |
| Marianna Waterworks | Marianna, AR | 3,238 | 7 | Clean |
| Boscobel Waterworks | Boscobel, WI | 3,237 | 21 | - |
| Harris County MUD 282 | Houston, TX | 3,237 | 5 | - |
| City of Willcox | Willcox, AZ | 3,236 | 220 | Clean |
| Brewster City Of | Brewster, WA | 3,235 | 29 | - |
| East Louisville Water District | Massena, NY | 3,235 | 4 | - |
| Corbet WSC | Corsicana, TX | 3,234 | 88 | - |
| Easley Central W/D #2 (Sc3920007) | Norris, SC | 3,234 | 4 | - |
| Old River Water Assn | Woodville, MS | 3,234 | 570 | - |
| Kotzebue Mun. Water System | Kotzebue, AK | 3,234 | 566 | - |
| Swords Creek - Rcpsa | Lebanon, VA | 3,233 | 17 | - |
| Wisconsin Dells Waterworks | Wisconsin Dells, WI | 3,232 | 32 | - |
| City of Bandera | Bandera, TX | 3,231 | 80 | - |
| Vance Afb | Enid, OK | 3,231 | 20 | - |
| Cottageville Psd | Cottageville, WV | 3,230 | 43 | - |
| Conyngham Sugarloaf Joint MA | Conyngham, PA | 3,230 | 1,576 | - |
| Nashville | Nashville, IL | 3,230 | 24 | Clean |
| Walsenburg City Of | Walsenburg, CO | 3,230 | 260 | - |
| Groveport PWS | Groveport, OH | 3,229 | 149 | Clean |
| Point Aquarius MUD | Houston, TX | 3,228 | 7 | - |
| Pittsfield Water Dept | Winterport, ME | 3,228 | 83 | - |
| Town of Kinder Water System | Kinder, LA | 3,228 | 26 | - |
| Monongah Town Of | Monongah, WV | 3,226 | 80 | - |
| Rock Island Water Dept City of | Rock Island, WA | 3,226 | 15 | - |
| Aqua Ohio - Village of Jefferson | Ashtabula, OH | 3,226 | 0 | Clean |
| Sugar Mountain Utility | Charlotte, NC | 3,226 | 20 | - |
| Sunbelt Fwsd Northline Terrace | Houston, TX | 3,225 | 31 | - |
| Western Guernsey Regional Water District | Cambridge, OH | 3,225 | 29 | - |