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 |
|---|---|---|---|---|
| Clarksville Water Department | Clarksville, TN | 251,864 | 3 | Clean |
| City of Garland | Garland, TX | 248,822 | 13 | Detected |
| San Gabriel Valley Water Co.-El Monte | El Monte, CA | 248,000 | 13 | Detected |
| Gilbert, Town Of | Gilbert, AZ | 247,600 | 1,235 | Detected |
| Gsw&sa (Sc2620004) | Conway, SC | 247,550 | 19 | Detected |
| Chandler City Of | Chandler, AZ | 247,328 | 851 | Detected |
| Des Moines Water Works | Des Moines, IA | 246,055 | 50 | Clean |
| Emerald Coast Utilities Authority (Ecua) | Pensacola, FL | 242,172 | 36 | Detected |
| Ann Arbor | Ann Arbor, MI | 241,868 | 119 | Detected |
| Scottsdale City Of | Scottsdale, AZ | 241,361 | 963 | Detected |
| Otay Water District | Spring Valley, CA | 238,008 | 0 | Clean |
| Hialeah, City Of | Hialeah, FL | 238,000 | 76 | Detected |
| San Gabriel Valley WC - Fontana | Fontana, CA | 237,700 | 3 | Clean |
| Glendale City Of | Phoenix, AZ | 234,766 | 645 | Detected |
| Norfolk, City Of | Norfolk, VA | 234,220 | 18 | Detected |
| Middlesex Water Company | Iselin, NJ | 233,376 | 87 | Detected |
| City of Frisco | Frisco, TX | 231,910 | 42 | Detected |
| Artesian Water Company | Newark, DE | 231,114 | 31 | Detected |
| Richmond, City Of | Richmond, VA | 229,395 | 97 | Clean |
| Columbus | Columbus, GA | 229,000 | 7 | Detected |
| Thornton City Of | Thornton, CO | 226,465 | 36 | Detected |
| Tualatin Valley Water District | Beaverton, OR | 224,600 | 17 | Clean |
| Port St Lucie Utilities | Port St Lucie, FL | 224,485 | 50 | Clean |
| Cherokee County | Canton, GA | 224,427 | 5 | Clean |
| City of McKinney | McKinney, TX | 224,043 | 12 | Detected |
| Cary, Town Of | Cary, NC | 224,000 | 69 | Detected |
| Consolidated U.d. of Rutherford Co | Murfreesboro, TN | 221,871 | 41 | Detected |
| Moa Municipality of Anchorage | Anchorage, AK | 221,351 | 521 | Detected |
| Erie City Water Authority | Erie, PA | 220,001 | 408 | Clean |
| Liberty Utilities New York - Lynbrook | Merrick, NY | 220,000 | 19 | Detected |
| Modesto, City Of | Modesto, CA | 218,771 | 25 | Detected |
| Wildwood City Water Department | Rio Grande, NJ | 218,472 | 165 | Clean |
| Waipahu-Ewa-Waianae | Honolulu, HI | 217,479 | 14 | Detected |
| NJ American Water - Short Hills | Short Hills, NJ | 217,230 | 31 | Detected |
| Trenton Water Works | Trenton, NJ | 217,000 | 412 | Clean |
| Sioux Falls | Sioux Falls, SD | 216,462 | 5 | Clean |
| Everett Public Works Dept. City Of | Everett, WA | 215,774 | 5 | Clean |
| Fayetteville Public Works Comm | Fayetteville, NC | 215,590 | 25 | Detected |
| Collier County Regional WTP | Naples, FL | 215,350 | 17 | Clean |
| Arlington County | Arlington, VA | 215,000 | 15 | Detected |
| San Bernardino City | San Bernardino, CA | 214,665 | 2 | Detected |
| Pcud-Pasco County Regional PWS | Land O' Lakes, FL | 214,403 | 78 | Detected |
| Rochester City | Rochester, NY | 214,000 | 16 | Clean |
| Yonkers City | Yonkers, NY | 211,569 | 17 | Clean |
| Tennessee American Water | Chattanooga, TN | 211,499 | 0 | Detected |
| Cucamonga Valley Water District | Rancho Cucamonga, CA | 211,069 | 5 | Clean |
| Springfield PWS | Springfield, MO | 210,898 | 4 | Detected |
| Indiana American Water - Northwest | Greenwood, IN | 210,510 | 15 | Clean |
| Wvawc-Kanawha Valley Dist | Charleston, WV | 209,283 | 86 | Clean |
| Hcwrc/Northwest Utilities | Tampa, FL | 208,982 | 54 | Detected |