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 |
|---|---|---|---|---|
| Nelsonville PWS | Nelsonville, OH | 6,656 | 558 | Clean |
| Kingwood Water Board | Kingwood, WV | 6,652 | 60 | Clean |
| Harris County MUD 433 | Houston, TX | 6,651 | 1 | - |
| Curran-Gardner Township Pwd | Springfield, IL | 6,651 | 12 | Clean |
| Hillsboro City | Hillsboro, OH | 6,650 | 66 | Clean |
| NJ American Water - Logan | Delran, NJ | 6,650 | 43 | Detected |
| Litchfield | Litchfield, IL | 6,648 | 172 | Clean |
| Osage Co RWD #15 | Skiatook, OK | 6,647 | 75 | Detected |
| Bond/Madison Water Company | Pocahontas, IL | 6,645 | 21 | Detected |
| Lisbon Water Department | Lisbon, ME | 6,643 | 57 | Detected |
| Joshua Basin Water District | Joshua Tree, CA | 6,640 | 9 | Clean |
| Rio WSC | Rio Grande City, TX | 6,639 | 168 | Detected |
| Elma City Of | Elma, WA | 6,638 | 28 | Clean |
| Bgwc I-20 (Sc3250012) | Elgin, SC | 6,637 | 21 | Detected |
| Winter Park WSD | Winter Park, CO | 6,635 | 105 | Clean |
| Irvington Water Supply | Irvington-On-Hudson, NY | 6,631 | 47 | Clean |
| Vc/Halifax Plantation (WTP-8) | Deland, FL | 6,630 | 15 | Clean |
| Volo | Volo, IL | 6,629 | 136 | Clean |
| Montgomery County MUD 119 Spring Trails | Houston, TX | 6,621 | 6 | Clean |
| Hoschton Water System | Houschton, GA | 6,620 | 61 | - |
| Block House MUD | Leander, TX | 6,618 | 5 | Detected |
| Memorial MUD | Sugar Land, TX | 6,615 | 18 | Clean |
| City of Alvarado | Alvarado, TX | 6,614 | 141 | Detected |
| Highlands, Town Of | Highlands, NC | 6,614 | 361 | Clean |
| Beauregard District No 2 Ward No 5 | Singer, LA | 6,613 | 47 | Clean |
| IL American-Dupage Utility | Godfrey, IL | 6,613 | 15 | - |
| City of Iowa Park | Iowa Park, TX | 6,612 | 7 | Detected |
| Heatherloch MUD | Houston, TX | 6,612 | 31 | Detected |
| Stanton Water Works | Stanton, KY | 6,611 | 160 | Clean |
| East Aurora Village | East Aurora, NY | 6,610 | 34 | Detected |
| Tumbling Shoals Water Assoc | Tumbling Shoals, AR | 6,608 | 7 | Clean |
| Mount Orab Village PWS | Mount Orab, OH | 6,607 | 98 | Detected |
| Canandaigua Town Cons. WD | Canandaigua, NY | 6,607 | 27 | Clean |
| Gasparilla Island Water Assoc | Boca Grande, FL | 6,605 | 22 | Clean |
| Ecwa Boston | Buffalo, NY | 6,604 | 0 | - |
| Prairie Path Water Company-Lake Holiday | St. Charles, IL | 6,601 | 44 | Clean |
| Sallal Water Association Inc | North Bend, WA | 6,600 | 15 | Clean |
| Jersey Shore Area Jnt Wat Auth | Jersey Shore, PA | 6,600 | 657 | Clean |
| Williamson Town WD | Williamson, NY | 6,600 | 49 | Clean |
| Moreau WD #2 (Queensbury) | Moreau, NY | 6,600 | 35 | Clean |
| Shore Water Company | Seaside Park, NJ | 6,600 | 41 | Clean |
| Arnold Line Water Association | Hattiesburg, MS | 6,600 | 722 | Clean |
| Town of Hampstead | Hampstead, MD | 6,600 | 21 | Detected |
| Campton Water System | Campton, KY | 6,600 | 463 | Clean |
| Illinois State University-Normal | Normal, IL | 6,600 | 100 | Clean |
| La Grange Highlands Sanitary District | Lagrange, IL | 6,600 | 6 | Clean |
| China Lake Naval Air Weapons Station | China Lake, CA | 6,600 | 32 | Clean |
| Catasauqua Mun Water Works | Catasauqua, PA | 6,598 | 121 | Detected |
| Indiana American Water - Sullivan | Greenwood, IN | 6,598 | 0 | Clean |
| Carlinville | Carlinville, IL | 6,598 | 243 | Clean |