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 Bell Gardens | Downey, CA | 11,437 | 2 | Detected |
| Pompton Lakes Mua | Pompton Lakes, NJ | 11,435 | 568 | Detected |
| Madison Co Water Facilities Bd | Huntsville, AR | 11,435 | 17 | Clean |
| Woodbury Water System | Woodbury, TN | 11,434 | 184 | Clean |
| Storm Lake Water Treatment Plant | Storm Lake, IA | 11,431 | 20 | Clean |
| Wylie Northeast Sud | Wylie, TX | 11,430 | 14 | Detected |
| Milton Purchase Water System | Milton, LA | 11,430 | 5 | Clean |
| Brewton Water Works | Brewton, AL | 11,430 | 356 | Clean |
| Urbana City PWS | Urbana, OH | 11,428 | 174 | Detected |
| Chehalis Water Department | Chehalis, WA | 11,426 | 42 | Clean |
| PA-American Water Co-Connellsv | Uniontown, PA | 11,425 | 18 | Clean |
| City of Selma | Selma, TX | 11,418 | 27 | Clean |
| Peru Water Department | Peru, IN | 11,417 | 144 | Clean |
| Rockwood Water, Sewer & Gas | Rockwood, TN | 11,412 | 33 | Detected |
| Rapid Valley Sanitary District | Rapid City, SD | 11,408 | 15 | Detected |
| Holbrook Public Works Dept | Holbrook, MA | 11,405 | 47 | Detected |
| Mendota, City Of | Mendota, CA | 11,404 | 29 | Clean |
| Aqua PA Superior Main System | Bryn Mawr, PA | 11,400 | 1,406 | Detected |
| Trinidad City Of | Trinidad, CO | 11,400 | 384 | Clean |
| Rattlesnake Ridge Water District | Grayson, KY | 11,397 | 99 | Clean |
| Uh - Cleveland Medical Center | Cleveland, OH | 11,395 | 8 | Detected |
| Bradfordville Regional W/S | Quincy, FL | 11,395 | 57 | Detected |
| Ash/Win Joint Water Authority | Ashburnham, MA | 11,394 | 1 | Clean |
| Oneida City | Oneida, NY | 11,393 | 19 | Clean |
| East Hanover Twp Water Dept | East Hanover Township, NJ | 11,393 | 331 | Detected |
| Kingston Water System | Kingston, TN | 11,392 | 57 | Detected |
| Memorial Villages Water Authority | Houston, TX | 11,382 | 15 | Detected |
| Washington County Water Company | Nashville, IL | 11,374 | 27 | Detected |
| Henry County Water Company | Clinton, MO | 11,373 | 37 | Detected |
| Lake of Egypt Pwd | Marion, IL | 11,368 | 172 | Clean |
| Sterling Ranch Cab | Littleton, CO | 11,357 | 8 | - |
| City of Ripley | Ripley, MS | 11,351 | 1,655 | Clean |
| Elon, Town Of | Elon, NC | 11,350 | 540 | Detected |
| Manchester Water Works | Manchester, KY | 11,349 | 438 | Detected |
| Grand Rapids | Grand Rapids, MN | 11,346 | 10 | Clean |
| Greenville Utilities Vil Of | Greenville, WI | 11,340 | 100 | Clean |
| Commerce | Commerce, GA | 11,340 | 41 | Clean |
| Brevard, City Of | Brevard, NC | 11,336 | 25 | Clean |
| Robinson-Palestine Water Commission | Robinson, IL | 11,331 | 43 | Detected |
| Aquarion Water Company, Millbury | Millbury, MA | 11,326 | 40 | Detected |
| Hillsville Utility District | Manchester, TN | 11,325 | 18 | Detected |
| Spencer Municipal Water Utility | Spencer, IA | 11,325 | 23 | Clean |
| Great Basin Water Company | Pahrump, NV | 11,322 | 31 | Clean |
| Point Baker Water System, Inc. | Milton, FL | 11,318 | 23 | Detected |
| Edwards Afb - Main Base | Edwards Afb, CA | 11,316 | 23 | Clean |
| Haysville, City Of | Haysville, KS | 11,315 | 51 | Clean |
| Gardnerville Ranchos Gid | Gardnerville, NV | 11,300 | 209 | Clean |
| Colchester Water System | South Burlington, VT | 11,299 | 2 | - |
| Utilities Inc - North Park Water Supply | Mandeville, LA | 11,298 | 27 | Clean |
| Jefferson Water and Sewer District PWS | Blacklick, OH | 11,294 | 123 | Clean |