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 |
|---|---|---|---|---|
| Lincoln Psd | Alum Creek, WV | 4,039 | 1,112 | Clean |
| Dover Water Dept | Dover, TN | 4,037 | 26 | Clean |
| East Montgomery County MUD 7 | Houston, TX | 4,035 | 0 | - |
| Harris County MUD 342 | Houston, TX | 4,035 | 4 | Clean |
| Blairsville | Blairsville, GA | 4,035 | 23 | Detected |
| Hawk Pride Mt Water System | Tuscumbia, AL | 4,035 | 60 | Detected |
| Lake Medina Shores | Austin, TX | 4,032 | 23 | - |
| Lpwdn South Region | Lafayette, LA | 4,032 | 4 | - |
| Asp - Red House Water Supply | Salamanca, NY | 4,030 | 8 | Clean |
| Spring Lake Improvement Distirct | Sebring, FL | 4,030 | 11 | Clean |
| Southern Perry Co-Congo | Corning, OH | 4,029 | 59 | Clean |
| Hamilton Water District | Hamilton, MS | 4,029 | 682 | Clean |
| Talbot County Water Works | Talbotton, GA | 4,028 | 123 | Detected |
| Centralia PWS | Centralia, MO | 4,027 | 17 | Clean |
| Farm Mutual W.C. (The) | Wildomar, CA | 4,026 | 30 | Detected |
| Ketchum PWA | Ketchum, OK | 4,025 | 49 | Clean |
| Asp - Barton & Weller Trail | Salamanca, NY | 4,025 | 4 | Clean |
| Blairsville Muni Auth | Blairsville, PA | 4,023 | 628 | Clean |
| Nichols Hills | Nichols Hills, OK | 4,020 | 279 | Clean |
| North of Crowley Water Corporation | Rayne, LA | 4,020 | 85 | Clean |
| Fort Branch Water Department | Fort Branch, IN | 4,020 | 152 | Clean |
| Colchester Sewer & Water Commission | Colchester, CT | 4,020 | 159 | Detected |
| Dadeville Water Works & Sewage Board | Dadeville, AL | 4,020 | 184 | Clean |
| Wellsburg, City Of | Wellsburg, WV | 4,019 | 200 | Detected |
| Petersburg Water Company | Washington, IN | 4,018 | 28 | Clean |
| Lake Blackshear Area | Cordele, GA | 4,018 | 14 | Clean |
| Northeast Lawrence U.d. | Lawrenceburg, TN | 4,017 | 103 | Clean |
| Aqua Ohio - Masury | Struthers, OH | 4,016 | 24 | Detected |
| Audrain County Consolidated PWSD 2 | Mexico, MO | 4,016 | 3 | - |
| Broadway, Town Of | Broadway, VA | 4,015 | 43 | Clean |
| Falls City, City Of | Falls City, NE | 4,015 | 0 | Clean |
| Langford Water Association | Brandon, MS | 4,013 | 920 | Clean |
| Mary Esther, City Of | Mary Esther, FL | 4,013 | 14 | Clean |
| Sioux Rural Water System | Watertown, SD | 4,012 | 13 | Clean |
| Mountain Lakes Water Dep | Riverdale, NJ | 4,012 | 340 | Detected |
| Camp Far West Resort | Trowbridge, CA | 4,012 | 24 | - |
| Laughlin Air Force Base | Laughlin Afb, TX | 4,010 | 25 | Clean |
| Coxsackie Village | Coxsackie, NY | 4,010 | 77 | Clean |
| Pelham | Pelham, GA | 4,007 | 37 | Clean |
| Prairie Du Sac Waterworks | Prairie Du Sac, WI | 4,006 | 55 | Clean |
| Smithton | Smithton, IL | 4,006 | 65 | - |
| Harris County MUD 186 | Houston, TX | 4,005 | 5 | Detected |
| North Pole Utilities | North Pole, AK | 4,005 | 99 | Clean |
| Harris County Wcid 50 El Lago | El Lago, TX | 4,002 | 40 | - |
| Sheep Creek Water Company | Phelan, CA | 4,002 | 5 | Detected |
| Bar Nunn, Town Of | Bar Nunn, WY | 4,000 | 16 | Clean |
| Bellows Falls Water Dept | Bellows Falls, VT | 4,000 | 25 | Clean |
| Swanton Village Water | Swanton, VT | 4,000 | 32 | - |
| Lyndonville Water System | Lyndonville, VT | 4,000 | 16 | Clean |
| Aldine Isd Grace Raymond Elementary Scho | Houston, TX | 4,000 | 25 | Clean |