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 |
|---|---|---|---|---|
| Broken Arrow Municipal Authority | Broken Arrow, OK | 116,330 | 91 | Detected |
| Provo City | Provo, UT | 116,288 | 140 | Clean |
| Highline Water District | Kent, WA | 115,950 | 9 | Clean |
| First U.d. of Knox County | Knoxville, TN | 115,531 | 45 | Detected |
| City of Beaumont Water Utility Dept | Beaumont, TX | 115,282 | 11 | Clean |
| City of Antioch | Antioch, CA | 115,074 | 6 | Clean |
| Lowell Regional Water Utility | Lowell, MA | 115,000 | 54 | Detected |
| South Bend Water Works | South Bend, IN | 115,000 | 340 | Detected |
| Clearwater Water System | Clearwater, FL | 115,000 | 35 | Detected |
| Cal-Water Service Co.-Chico | San Jose, CA | 114,925 | 17 | Detected |
| Elgin | Elgin, IL | 114,797 | 37 | Detected |
| Kennewick City Of | Kennewick, WA | 114,468 | 7 | Detected |
| Golden State WC - West Orange County | Anaheim, CA | 114,379 | 0 | Detected |
| Pueblo Board of Ww | Pueblo, CO | 114,070 | 75 | Clean |
| Billings City Of | Billings, MT | 114,000 | 4 | Clean |
| City of Conroe | Conroe, TX | 113,912 | 7 | Clean |
| Olympia City Of | Olympia, WA | 113,584 | 41 | Detected |
| Ventura Water Department | Ventura, CA | 113,500 | 12 | Detected |
| Vallecitos WD | San Marcos, CA | 113,500 | 2 | Clean |
| Auburn City of | Auburn, WA | 113,095 | 127 | Detected |
| Yakima Water Division City Of | Yakima, WA | 112,858 | 57 | Clean |
| City of Palm Coast Utility | Palm Coast, FL | 112,324 | 28 | Clean |
| Boynton Beach PWS | Boynton Beach, FL | 112,000 | 46 | Detected |
| Ponce Urbano | Ponce, PR | 111,926 | 2,210 | Detected |
| Skagit County PUD 1 Judy Res | Mount Vernon, WA | 111,415 | 19 | Detected |
| Murfreesboro Water Department | Murfreesboro, TN | 111,365 | 34 | Detected |
| Mustang Sud | Aubrey, TX | 110,826 | 48 | Detected |
| Douglasville-Douglas County Wsa | Douglasville, GA | 110,219 | 6 | Clean |
| Toho Water Authority Eastern | Kissimmee, FL | 110,102 | 164 | Clean |
| Great Oaks WC Inc | San Jose, CA | 110,088 | 11 | Detected |
| Azusa Light and Water | Azusa, CA | 110,044 | 2 | Detected |
| Veolia Water | Harrisburg, PA | 110,000 | 136 | Detected |
| Town of Hempstead Water Department | East Meadow, NY | 110,000 | 2 | Detected |
| Mesa Water District | Costa Mesa, CA | 110,000 | 4 | Clean |
| Dearborn | Dearborn, MI | 109,976 | 2 | Clean |
| San Bernardino Valley WD | San Bernardino, CA | 109,608 | 2 | - |
| City of Santa Maria Utilities Department | Santa Maria, CA | 109,477 | 13 | Clean |
| Downey - City, Water Dept. | Downey, CA | 108,816 | 16 | Detected |
| East Valley Water District | Highland, CA | 108,629 | 13 | Detected |
| Wilmington Water Department | Wilmington, DE | 107,976 | 30 | Detected |
| Green Bay Waterworks | Green Bay, WI | 107,369 | 21 | Clean |
| Rio Rancho Water & Ww Services | Rio Rancho, NM | 107,350 | 457 | Clean |
| Waterbury Water Department | Waterbury, CT | 107,271 | 35 | Clean |
| Renton City Of | Renton, WA | 107,119 | 59 | Detected |
| Canton Public Water System | Canton, OH | 107,113 | 34 | Clean |
| City of Tyler | Tyler, TX | 107,000 | 106 | Detected |
| Castle Rock Town Of | Castle Rock, CO | 106,822 | 52 | Detected |
| Kingsport Water Dept | Kingsport, TN | 106,765 | 11 | Detected |
| Richland City Of | Richland, WA | 106,248 | 45 | Detected |
| Torrance-City, Water Dept. | Torrance, CA | 106,183 | 57 | Clean |