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 |
|---|---|---|---|---|
| Rockford | Rockford, IL | 147,051 | 268 | Detected |
| Veolia Water New York, Inc. RD-1 | West Nyack, NY | 146,732 | 101 | Clean |
| City of Waco | Waco, TX | 146,241 | 5 | Detected |
| Rancho California Water District | Temecula, CA | 146,147 | 4 | Detected |
| Bjw&sa (0720003) | Okatie, SC | 145,634 | 32 | Detected |
| Hernando Co Utl-West | Brooksville, FL | 145,204 | 37 | Detected |
| California Water Service Co. - Dominguez | San Jose, CA | 143,996 | 19 | Detected |
| Olathe, City Of | Olathe, KS | 143,014 | 58 | Clean |
| Mawc Sweeney Plant | Greensburg, PA | 143,000 | 71 | Clean |
| Brunswick County Water System | Bolivia, NC | 142,227 | 168 | Detected |
| Cedar Rapids Water Department | Cedar Rapids, IA | 141,831 | 35 | Clean |
| Dayton Public Water System | Dayton, OH | 141,407 | 46 | Detected |
| City of Lewisville | Lewisville, TX | 140,880 | 0 | Detected |
| Palm Bay, City Of | Palm Bay, FL | 140,750 | 65 | Detected |
| Chester Water Authority | Chester, PA | 140,437 | 14 | Detected |
| W Jefferson Ww District 2 | Jefferson, LA | 140,264 | 14 | Detected |
| Spartanburg Water System (4210001) | Spartanburg, SC | 140,024 | 20 | Clean |
| Gainesville | City of Gainesville, GA | 140,000 | 18 | Clean |
| Bellingham-Water Division City Of | Bellingham, WA | 139,912 | 18 | Clean |
| City of Fullerton | Fullerton, CA | 139,461 | 14 | Detected |
| Gwa Northern Water System | Mangilao, GU | 139,207 | 30 | Detected |
| Guam International Airport Authority | Tamuning, GU | 138,336 | 2 | - |
| IL American-Peoria | Godfrey, IL | 137,575 | 20 | Detected |
| Escondido, City Of | Escondido, CA | 137,044 | 2 | Clean |
| Cftod Central (4 Wps) | Lake Buena Vista, FL | 136,500 | 46 | Clean |
| Pwcsa - West | Woodbridge, VA | 136,409 | 0 | Detected |
| City of Carrollton | Carrollton, TX | 136,170 | 2 | Detected |
| Victorville Water District | Victorville, CA | 135,983 | 13 | Clean |
| Jurupa Community SD | Jurupa Valley, CA | 135,093 | 16 | Clean |
| Portland Water District-Greater | Portland, ME | 135,068 | 20 | Clean |
| Liberty Utilities New York - Merrick | Merrick, NY | 135,000 | 249 | Clean |
| PA Amer Water Co Lake Scranton | Wilkes Barre, PA | 134,570 | 59 | Detected |
| Arizona Water Co - Pinal Valley | Phoenix, AZ | 134,432 | 590 | Detected |
| Warren, City Of | Warren, MI | 134,056 | 9 | Clean |
| NJ American Water - Liberty | Bound Brook, NJ | 134,000 | 80 | Detected |
| Clermont Public Water System | Batavia, OH | 133,059 | 62 | Detected |
| Mawc Yough Plant | Greensburg, PA | 133,000 | 150 | Clean |
| Vista Irrigation District | Vista, CA | 132,430 | 17 | Clean |
| Greeley City Of | Greeley, CO | 132,310 | 49 | Clean |
| El Dorado ID - Main | Placerville, CA | 132,171 | 26 | Detected |
| West Palm Beach WTP | West Palm Beach, FL | 132,000 | 140 | Detected |
| IL American-East St Louis | Godfrey, IL | 131,368 | 12 | Detected |
| City of Santa Clara | Santa Clara, CA | 130,746 | 7 | Clean |
| City of Round Rock | Round Rock, TX | 130,662 | 16 | Detected |
| Youngstown City PWS | Youngstown, OH | 130,530 | 12 | Detected |
| White House Utility District | White House, TN | 130,411 | 18 | Clean |
| City of Clovis | Clovis, CA | 130,130 | 14 | Detected |
| Macon Water Authority | Macon, GA | 130,024 | 30 | - |
| Boca Raton WTP | Boca Raton, FL | 130,000 | 58 | Detected |
| City of League City | League City, TX | 128,412 | 15 | Detected |