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 |
|---|---|---|---|---|
| City of Littlefield | Littlefield, TX | 6,372 | 49 | Clean |
| Caesars Palace | Las Vegas, NV | 6,372 | 25 | - |
| Dallas Rural Water District | Hamilton, IL | 6,370 | 23 | Clean |
| Ayden Town Of | Ayden, NC | 6,366 | 25 | Detected |
| Milford, Village Of | Milford, MI | 6,366 | 12 | Clean |
| East Central Vernon Water System | Slagle, LA | 6,363 | 2 | Clean |
| Louisiana State Penitentiary | Angola, LA | 6,362 | 31 | Clean |
| Harvey Cedars Water Dept | Harvey Cedars, NJ | 6,360 | 64 | Clean |
| Holtville, City Of | Holtville, CA | 6,355 | 56 | Clean |
| City of Vidalia Water System | Vidalia, LA | 6,354 | 22 | Detected |
| Cherryville, City Of | Cherryville, NC | 6,353 | 9 | Clean |
| Snowmass Village WSD | Snowmass Village, CO | 6,353 | 43 | Clean |
| Energy Dept Of/200W | Richland, WA | 6,351 | 15 | Clean |
| Utilities Inc - Kingspoint Subdivision | Mandeville, LA | 6,351 | 13 | Clean |
| Dowagiac | Dowagiac, MI | 6,350 | 50 | Clean |
| Maywood Mutual Water Co. #2 | Maywood, CA | 6,349 | 0 | Detected |
| Mountain View Waterworks | Mountain View, AR | 6,349 | 11 | Clean |
| Helendale Community Service District | Helendale, CA | 6,347 | 51 | Detected |
| City of Keene | Keene, TX | 6,346 | 53 | Detected |
| Blackstone, Town Of | Blackstone, VA | 6,345 | 98 | Clean |
| Wharton Water Dept | Mount Arlington, NJ | 6,342 | 220 | Detected |
| Laurel Municipal Water System | Laurel, MT | 6,339 | 141 | Clean |
| Dumas Waterworks | Dumas, AR | 6,338 | 6 | Clean |
| Margaret Water Works | Margaret, AL | 6,336 | 7 | Detected |
| Bethlehem-Roanoke W/D (Sc3920003) | Pickens, SC | 6,334 | 2 | Clean |
| Grafton City Of | Grafton, WV | 6,333 | 85 | Clean |
| Harris County MUD 65 | Houston, TX | 6,330 | 4 | Clean |
| Dalton Fire District | Dalton, MA | 6,330 | 68 | Clean |
| Kennett Square Mun Water Works | Kennett Square, PA | 6,328 | 653 | Detected |
| Cheraw Town of (Sc1310001) | Cheraw, SC | 6,325 | 115 | Detected |
| Clyde City | Clyde, OH | 6,325 | 21 | Detected |
| First Craven Sanitary District | Bridgeton, NC | 6,325 | 11 | Clean |
| Ctwc - Naugatuck Reg-Collinsville Sys | Clinton, CT | 6,324 | 66 | Detected |
| Usmc Yuma Main System | Yuma, AZ | 6,324 | 350 | Detected |
| North Tahoe PUD - Main | Tahoe Vista, CA | 6,321 | 12 | Clean |
| Blaine City Of | Blaine, WA | 6,319 | 141 | Clean |
| City of Lindale | Lindale, TX | 6,313 | 4 | Clean |
| Byron | Byron, MN | 6,312 | 14 | Clean |
| Powell, City Of | Powell, WY | 6,310 | 4 | Clean |
| Somerset Boro Muni Water Auth | Somerset, PA | 6,309 | 500 | Clean |
| Metropolis | Metropolis, IL | 6,309 | 133 | Clean |
| Mount Olive Water Association | Elkins, AR | 6,308 | 39 | Clean |
| Coqui | Salinas, PR | 6,307 | 421 | Clean |
| Carmi | Carmi, IL | 6,307 | 31 | Clean |
| Marion-Arcadia-Sodus CSA | Sodus, NY | 6,303 | 10 | Clean |
| Parker County Sud Surface | Millsap, TX | 6,300 | 5 | Detected |
| Rainbow Water District | Springfield, OR | 6,300 | 37 | Detected |
| Northshore University Evanston | Chicago, IL | 6,300 | 51 | Clean |
| Holden Beach, Town Of | Holden Beach, NC | 6,299 | 26 | Detected |
| Fort Bend County MUD 35 | Houston, TX | 6,297 | 2 | Detected |