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 Post | Post, TX | 5,471 | 149 | Detected |
| Northfield | Northfield, IL | 5,470 | 6 | Clean |
| Social Circle | Social Circle, GA | 5,470 | 39 | Detected |
| Tud - Columbia Water System | Sonora, CA | 5,463 | 2 | Clean |
| Waynesville PWS | Waynesville, MO | 5,460 | 51 | Clean |
| Alcorn W/a #1-Indian Springs | Corinth, MS | 5,456 | 477 | Clean |
| Groton Water Department | Groton, MA | 5,456 | 110 | Detected |
| City of Fort Meade | Fort Meade, FL | 5,455 | 34 | Clean |
| Santo Domingo Pueblo | Santo Domingo, 06 | 5,455 | 127 | Clean |
| Montgomery County MUD 112 | Houston, TX | 5,454 | 0 | Clean |
| Stanley, Town Of | Stanley, NC | 5,453 | 84 | Clean |
| Walled Lake, City Of | Waterford, MI | 5,452 | 10 | Clean |
| Sunday Creek Valley Water PWS | Millfield, OH | 5,451 | 76 | Clean |
| Millbrook Utilities | Millbrook, AL | 5,451 | 182 | Detected |
| City of Center | Center, TX | 5,450 | 163 | Clean |
| Glenwood Municipal Utilities | Glenwood, IA | 5,449 | 259 | Clean |
| City of Waller | Waller, TX | 5,448 | 71 | Clean |
| Harris County MUD 148 Kingslake | Houston, TX | 5,448 | 17 | Detected |
| Maryland American Water--Severn System | Bel Air, MD | 5,447 | 15 | Clean |
| Milton Water | Ashland, WV | 5,446 | 340 | Clean |
| Longtown Rw&sd #1 (Pittsburg Co.) | Eufaula, OK | 5,444 | 375 | Clean |
| Williams Township | Bay City, MI | 5,444 | 3 | Clean |
| Maiden, Town Of | Maiden, NC | 5,441 | 71 | Detected |
| Clemson Univ Fants Grove W/S (Sc3970112) | Clemson, SC | 5,440 | 5 | - |
| Friendsville Water Works | Friendsville, TN | 5,437 | 54 | Clean |
| Batavia Consolidated W.D. | Batavia, NY | 5,436 | 8 | Clean |
| Topsfield Water Department | Topsfield, MA | 5,435 | 72 | Detected |
| Fall Creek Falls U.d. | Pikeville, TN | 5,434 | 284 | Clean |
| City of Forest | Forest, MS | 5,430 | 1,279 | Clean |
| Winterset Municipal Waterworks | Winterset, IA | 5,428 | 138 | Clean |
| Saint Paul Park | St. Paul Park, MN | 5,427 | 3 | Detected |
| Whiteville, City Of | Whiteville, NC | 5,426 | 27 | Clean |
| Park City | Park City, IL | 5,425 | 52 | Clean |
| Fort Bend County MUD 26 Quail Green West | Houston, TX | 5,424 | 6 | Clean |
| Allamuchy Twp Water & Sewer | Allamuchy Township, NJ | 5,423 | 76 | Detected |
| McKinney Water District | McKinney, KY | 5,423 | 126 | Clean |
| Fulshear MUD 3A | Houston, TX | 5,421 | 4 | - |
| Grosse Pointe, City Of | Grosse Pointe, MI | 5,421 | 17 | Clean |
| Ripley City Of | Ripley, WV | 5,420 | 420 | Detected |
| Lee Water Dept | Lee, MA | 5,420 | 61 | Clean |
| Hustonville Water Works | Hustonville, KY | 5,420 | 58 | Clean |
| Southern Sioux County Rural Water | Ireton, IA | 5,420 | 37 | Clean |
| Harris County MUD 46 | Houston, TX | 5,418 | 23 | Clean |
| City of Atlanta | Atlanta, TX | 5,418 | 247 | Clean |
| Robbins | Robbins, IL | 5,415 | 258 | Clean |
| Moccasin Gap_scott Co Psa | Weber City, VA | 5,412 | 128 | Clean |
| Chimney Hill MUD | Houston, TX | 5,409 | 12 | Detected |
| Zebulon | Zebulon, GA | 5,407 | 38 | - |
| Indiana American Water - Winchester | Greenwood, IN | 5,405 | 3 | Clean |
| Frenchburg Water Company | Frenchburg, KY | 5,401 | 40 | Clean |