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 |
|---|---|---|---|---|
| East Greenbush General W.D. | East Greenbush, NY | 15,843 | 22 | Clean |
| Chubbuck City Of | Chubbuck, ID | 15,842 | 37 | Clean |
| Chelan Co PUD 1 | Wenatchee, WA | 15,840 | 20 | Clean |
| Lincolnton, City Of | Lincolnton, NC | 15,839 | 5 | Detected |
| Harris County MUD 167 | Houston, TX | 15,837 | 90 | Clean |
| Indianola Water Supply | Indianola, IA | 15,833 | 45 | Clean |
| Washington Township | Washington, MI | 15,828 | 2 | Clean |
| Bear Creek Sud | Lavon, TX | 15,822 | 18 | Detected |
| Bordentown Water Departm | Bordentown, NJ | 15,821 | 241 | Clean |
| Madison Water Dept | Madison, NJ | 15,820 | 139 | Detected |
| Longmeadow Water Dept | Longmeadow, MA | 15,815 | 66 | Clean |
| Walker Water System | Walker, LA | 15,813 | 44 | Clean |
| Port Orchard Water Dept | Port Orchard, WA | 15,810 | 119 | Clean |
| Oconomowoc Waterworks | Oconomowoc, WI | 15,805 | 26 | Detected |
| Hartford Waterworks | Hartford, WI | 15,805 | 258 | Detected |
| Greater Pine Island Water Association | Bokeelia, FL | 15,805 | 3 | Clean |
| White City Wid | Salt Lake City, UT | 15,800 | 502 | Clean |
| Sea Isle City Water Department | Sea Isle City, NJ | 15,800 | 49 | Clean |
| Fort Bend County MUD 30 | Houston, TX | 15,798 | 2 | Detected |
| Mount Vernon | Mount Vernon, IL | 15,793 | 39 | Detected |
| City of Buckeye Sonora - Sundance | Buckeye, AZ | 15,783 | 137 | Clean |
| Slippery Rock Muni Auth | Slippery Rock, PA | 15,778 | 173 | Clean |
| Canyon Municipal Water System | Canyon, TX | 15,771 | 15 | Detected |
| Watson Rural Water Company | Jeffersonville, IN | 15,750 | 119 | Clean |
| Evergreen MD | Evergreen, CO | 15,750 | 36 | Clean |
| Ripon, City Of | Ripon, CA | 15,741 | 30 | Detected |
| West Lawrence Water Coop | Mt Hope, AL | 15,735 | 21 | Detected |
| Livingston Water Dept | Livingston, TN | 15,733 | 114 | Clean |
| Holliston Water Department | Holliston, MA | 15,713 | 288 | Detected |
| US Army Fort Irwin | Fort Irwin, CA | 15,701 | 146 | Clean |
| New Haven Water Department | New Haven, IN | 15,700 | 46 | Detected |
| Naval Station Washington - Wny | Washington, DC | 15,690 | 62 | Detected |
| Mun Water Auth of Aliquippa | Aliquippa, PA | 15,685 | 273 | Detected |
| West Lauderdale Co Water & Fpa | Florence, AL | 15,681 | 18 | Detected |
| Chester Metropolitan District (1220002) | Chester, SC | 15,668 | 42 | Detected |
| Villa Rica | Villa Rica, GA | 15,667 | 98 | Clean |
| Sardis Water Association | Mabelvale, AR | 15,660 | 1 | Clean |
| Sellersburg Water Department | Sellersburg, IN | 15,655 | 221 | Detected |
| Cal Am - Fruitridge Vista | Sacramento, CA | 15,652 | 8 | Clean |
| Mitchell | Mitchell, SD | 15,651 | 106 | Clean |
| Blountville Utility District | Blountville, TN | 15,647 | 6 | Clean |
| Roanoke Rapids Sanitary Dist | Roanoke Rapids, NC | 15,630 | 39 | Detected |
| Town of Elkton | Elkton, MD | 15,625 | 31 | Detected |
| City of Humble | Humble, TX | 15,616 | 6 | Detected |
| Manchester Twp Water Utility - Western | Manchester, NJ | 15,613 | 23 | Detected |
| Apache Junction Water District | Apache Junction, AZ | 15,610 | 694 | Clean |
| US Army Fort Huachuca | Dragoon, AZ | 15,603 | 972 | Detected |
| Monroe City PWS | Monroe, OH | 15,600 | 114 | Clean |
| Laguardo Utility District | Lebanon, TN | 15,595 | 34 | Clean |
| Bayleaf Master | Cary, NC | 15,585 | 415 | Detected |