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 |
|---|---|---|---|---|
| Perry Municipal Water Works | Perry, IA | 7,836 | 194 | Clean |
| Cannon Air Force Base Water System | Cannon Afb, NM | 7,832 | 574 | Detected |
| Princeton | Princeton, IL | 7,832 | 32 | Clean |
| Florin County Water District | Sacramento, CA | 7,831 | 45 | Detected |
| Hawley WSC | Hawley, TX | 7,830 | 7 | Detected |
| Webster City Water Supply | Webster City, IA | 7,825 | 38 | Clean |
| Yreka, City Of | Yreka, CA | 7,825 | 5 | Clean |
| Sienna MUD 10 | Houston, TX | 7,824 | 7 | Detected |
| Icard Township Water Corp | Hildebran, NC | 7,821 | 12 | Clean |
| Red River County WSC | Clarksville, TX | 7,818 | 194 | Clean |
| First Colony MUD 9 | Houston, TX | 7,818 | 4 | Clean |
| Gum Springs WSC 2 | Hallsville, TX | 7,815 | 39 | Clean |
| City of Gilmer | Gilmer, TX | 7,812 | 10 | Clean |
| City of Susanville | Susanville, CA | 7,811 | 11 | Clean |
| Veolia Water Bethel | Harrisburg, PA | 7,809 | 54 | Detected |
| Verona - Weyers Cave | Verona, VA | 7,808 | 3 | Clean |
| Bonner Springs, City Of | Bonner Springs, KS | 7,805 | 45 | Clean |
| Wytheville, Town Of | Wytheville, VA | 7,804 | 82 | Clean |
| Edinboro Water Authority | Edinboro, PA | 7,800 | 428 | Clean |
| Municipal Authority of Corry | Corry, PA | 7,800 | 383 | Clean |
| Conemaugh Twp Muni Auth | Davidsville, PA | 7,800 | 567 | Detected |
| Western Carolina Univ WTP | Cullowhee, NC | 7,800 | 182 | Clean |
| University of MS Medical Cntr | Jackson, MS | 7,800 | 18 | Clean |
| Springhill Water System | Springhill, LA | 7,800 | 30 | Clean |
| Rock Island Arsenal, US Army | Rock Island, IL | 7,800 | 46 | Detected |
| Elberton | Elberton, GA | 7,800 | 7 | Clean |
| Chattooga County | Trion, GA | 7,800 | 21 | Detected |
| Jackson County Water Authority | Scottsboro, AL | 7,800 | 34 | Detected |
| Spirit Mountain Casino | Grand Ronde, 10 | 7,800 | 25 | Clean |
| Gilbert-Summit WD (3220001) | Gilbert, SC | 7,795 | 154 | Clean |
| City of Leon Valley | Leon Valley, TX | 7,794 | 289 | Detected |
| City of Dubois Water Depart | Dubois, PA | 7,794 | 185 | Clean |
| Southern Wayne Sanitary Dist | Goldboro, NC | 7,793 | 135 | Detected |
| City of Jersey Village | Jersey Village, TX | 7,792 | 45 | Detected |
| St Tam Parish - Cross Gates SD | Covington, LA | 7,791 | 49 | Detected |
| Winsted Water Works | Winsted, CT | 7,784 | 191 | Clean |
| Delhi Cwd | Delhi, CA | 7,784 | 34 | Detected |
| Town of Aberdeen | Aberdeen, MS | 7,783 | 2,703 | Clean |
| Wedowee Water, Sewer, & Gas Board | Wedowee, AL | 7,782 | 282 | Clean |
| Baxter Water Department | Baxter, TN | 7,781 | 67 | Clean |
| Edgeworth Boro Muni Auth | Leetsdale, PA | 7,781 | 23 | Clean |
| Antigo Waterworks | Antigo, WI | 7,780 | 28 | Clean |
| Dale County Water Authority | Ozark, AL | 7,779 | 109 | Clean |
| Sandersville | Sandersville, GA | 7,776 | 41 | Clean |
| Flathead County Water and Sewer | Kalispell, MT | 7,775 | 19 | Clean |
| Valencia Heights Water Co. | West Covina, CA | 7,775 | 12 | Detected |
| Austell | Austell, GA | 7,774 | 14 | Detected |
| Harris County MUD 238 | The Woodlands, TX | 7,773 | 42 | Detected |
| Highlands Mutual Water Company | Clearlake, CA | 7,772 | 23 | Clean |
| Canfield City PWS | Canfield, OH | 7,767 | 33 | Detected |