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 |
|---|---|---|---|---|
| Spokane City Of | Spokane, WA | 343,167 | 1 | Detected |
| Henderson City Of | Henderson, NV | 336,534 | 5 | Clean |
| Ecwa Direct | Buffalo, NY | 335,000 | 6 | Clean |
| New Orleans Carrollton Water Works | New Orleans, LA | 334,903 | 30 | Detected |
| Loudoun Water - Central System | Ashburn, VA | 334,808 | 43 | Detected |
| Providence-City Of | Providence, RI | 333,142 | 51 | Clean |
| Henrico County Water System | Henrico, VA | 330,000 | 14 | Clean |
| Charleston Water System (Sc1010001) | Charleston, SC | 327,422 | 22 | Detected |
| Durham, City Of | Durham, NC | 322,083 | 276 | Detected |
| Greensboro, City Of | Greensboro, NC | 319,588 | 24 | Detected |
| Columbia City of (Sc4010001) | Columbia, SC | 319,500 | 76 | Detected |
| City of Corpus Christi | Corpus Christi, TX | 318,387 | 63 | Detected |
| Bellevue City Of | Bellevue, WA | 317,330 | 11 | Clean |
| City of Santa Ana | Santa Ana, CA | 310,539 | 20 | Detected |
| Passaic Valley Water Commission | Clifton, NJ | 310,483 | 52 | Detected |
| St Louis City PWS | St Louis, MO | 304,709 | 27 | Clean |
| Kentucky-American Water Co | Lexington, KY | 299,501 | 30 | Detected |
| Riverside, City Of | Riverside, CA | 298,398 | 1 | Detected |
| Clayton County Water Authority | Morrow, GA | 298,374 | 13 | Detected |
| Lincoln, City Of | Lincoln, NE | 296,000 | 8 | Clean |
| Newark Water Department | Newark, NJ | 294,274 | 349 | Detected |
| Santa Clarita Valley Water Agency | Newhall, CA | 294,090 | 4 | Detected |
| Cocoa, City Of | Cocoa, FL | 294,039 | 70 | Clean |
| Ocud/Eastern Water System (2 Wp) | Orlando, FL | 293,374 | 41 | Clean |
| City of Plano | Plano, TX | 292,059 | 17 | Detected |
| Glen Burnie-Broadneck | Millersville, MD | 290,606 | 82 | Clean |
| Howard County D.p.w. Distribution | Columbia, MD | 286,158 | 20 | Detected |
| Lee County Utilities | Fort Myers, FL | 282,556 | 13 | Detected |
| Akron City PWS | Kent, OH | 280,000 | 214 | Detected |
| Mobile, Bd. of W&S Comm. of the City Of | Mobile, AL | 279,000 | 204 | Clean |
| Gswc - Southwest | Hawthorne, CA | 277,740 | 11 | Clean |
| Helix Water District | La Mesa, CA | 277,668 | 0 | Clean |
| Buffalo Water Authority | Buffalo, NY | 276,000 | 106 | Clean |
| Montgomery (Ww&ssb of the City Of) | Montgomery, AL | 276,000 | 49 | Clean |
| E Jefferson Ww District 1 | Jefferson, LA | 275,163 | 2 | Detected |
| Lubbock Public Water System | Lubbock, TX | 275,041 | 11 | Detected |
| Grand Rapids | Grand Rapids, MI | 273,005 | 2 | Clean |
| Sarasota Co Special Util Dist | Sarasota, FL | 272,267 | 29 | Detected |
| Madison Water Utility | Madison, WI | 272,000 | 327 | Detected |
| Veolia Water New York | West Nyack, NY | 270,000 | 155 | Detected |
| Coachella Vwd: Cove Community | Palm Desert, CA | 270,000 | 3 | Clean |
| Fort Wayne - 3 Rivers Filtration Plant | Fort Wayne, IN | 269,994 | 37 | Detected |
| Cws - Bakersfield | San Jose, CA | 267,881 | 12 | Detected |
| Veolia Water Idaho | Boise, ID | 264,978 | 240 | Clean |
| NJ American Water - Western | Delran, NJ | 264,586 | 47 | Detected |
| City of Irving | Irving, TX | 264,546 | 8 | Detected |
| Huntsville Utilities | Huntsville, AL | 262,158 | 1 | Detected |
| Jersey City Mua | Hoboken, NJ | 262,000 | 70 | Detected |
| City of Laredo | Laredo, TX | 260,046 | 273 | Detected |
| Knoxville Utilities Board - Kub | Knoxville, TN | 254,671 | 29 | Detected |