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 |
|---|---|---|---|---|
| Homosassa Special Water District | Homosassa, FL | 5,548 | 51 | Clean |
| Metropolitan Dwid - Diablo Village | Tucson, AZ | 5,542 | 116 | Clean |
| Judy Water Association | Mt. Sterling, KY | 5,539 | 62 | Clean |
| East Ncc District | Dover, DE | 5,538 | 4 | Clean |
| City of Williams | Williams, CA | 5,538 | 6 | Clean |
| Perryville Waterworks | Perryville, AR | 5,538 | 139 | - |
| Hugo Municipal Authority | Hugo, OK | 5,536 | 1,034 | Clean |
| Hokes Bluff Water Board | Hokes Bluff, AL | 5,536 | 3 | Clean |
| Northwest Harris County MUD 19 | Houston, TX | 5,535 | 22 | - |
| Upper Michigan Water Company | Calumet, MI | 5,535 | 0 | Clean |
| City of Bowie | Bowie, TX | 5,534 | 20 | Detected |
| Cosmopolitan Hotel | Las Vegas, NV | 5,534 | 10 | Clean |
| Jackson WSC | Tyler, TX | 5,532 | 160 | Clean |
| Cambria Comm Services Dist | Cambria, CA | 5,532 | 22 | Clean |
| Valley Rural Utility Company | Lawrenceburg, IN | 5,529 | 28 | Clean |
| Taos Municipal Water System | Taos, NM | 5,528 | 215 | Clean |
| Chumuckla Water System, Inc. | Pace, FL | 5,527 | 21 | Clean |
| Harris County MUD 374 Cypress Creek Lake | Houston, TX | 5,526 | 3 | Detected |
| Berlin Waterworks | Berlin, WI | 5,524 | 86 | Clean |
| Aibonito Urbano | Santurce, PR | 5,524 | 307 | Detected |
| Sawmills, Town Of | Granite Falls, NC | 5,524 | 4 | Clean |
| Montgomery County MUD 139 | Houston, TX | 5,523 | 0 | - |
| Fort Bend County MUD 34 | Houston, TX | 5,523 | 2 | Detected |
| Wappingers Falls Village | Wappingers Falls, NY | 5,522 | 10 | Clean |
| Cypress Black Bayou Water System | Benton, LA | 5,520 | 32 | Clean |
| Wayne Water Town Of | Wayne, WV | 5,519 | 64 | Clean |
| Caruthersville PWS | Caruthersville, MO | 5,518 | 24 | Clean |
| Veolia Water New Jersey Vernon Valley | Highland Lakes, NJ | 5,517 | 15 | Detected |
| Colby, City Of | Colby, KS | 5,516 | 114 | Clean |
| Dudley Water Department | Dudley, MA | 5,515 | 306 | Clean |
| East Pendleton Water District | Falmouth, KY | 5,515 | 34 | Detected |
| City of Presidio | Presidio, TX | 5,514 | 121 | Clean |
| Fairfield Harbour | Charlotte, NC | 5,514 | 25 | Clean |
| DE Witt Water Supply | Dewitt, IA | 5,514 | 27 | Clean |
| Edgerton Waterworks | Edgerton, WI | 5,512 | 51 | Clean |
| Sheldon Water Department | Sheldon, IA | 5,512 | 22 | Clean |
| Artesian Northern Sussex Regional | Newark, DE | 5,511 | 2 | Detected |
| Celina Water System | Celina, TN | 5,510 | 80 | Clean |
| Landis, Town Of | Landis, NC | 5,510 | 81 | - |
| Riverstone/Rootcreek Water District | Fresno, CA | 5,507 | 2 | - |
| Palm Ranch Irrigation Dist. | Quartz Hill, CA | 5,507 | 3 | Clean |
| City of Sinton | Sinton, TX | 5,505 | 57 | Clean |
| Bridgeport Utilities Board | Bridgeport, AL | 5,505 | 112 | Detected |
| Hilmar County Water District | Hilmar, CA | 5,504 | 16 | Clean |
| Osceola Water Works | Osceola, IA | 5,503 | 155 | Detected |
| Deep Creek Lake Water Service Area | Mountain Lake Park, MD | 5,502 | 2 | - |
| Usaf F.e. Warren Afb | F.e. Warren Afb, WY | 5,500 | 23 | Clean |
| Harrison Utilities - Fka Waverly SD | Menasha, WI | 5,500 | 25 | Detected |
| City of Denver City | Denver City, TX | 5,500 | 79 | Clean |
| City of Elsa | Elsa, TX | 5,500 | 274 | Detected |