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 |
|---|---|---|---|---|
| Detroit City Of | Detroit, MI | 633,218 | 18 | Clean |
| D.C. Water and Sewer Authority | Washington, DC | 632,323 | 82 | Detected |
| Hnl-Windward-Pearl Harbor | Honolulu, HI | 631,389 | 130 | Detected |
| Milwaukee Waterworks | Milwaukee, WI | 626,000 | 40 | Clean |
| Palm Beach County Water Utilities | West Palm Beach, FL | 618,746 | 37 | Detected |
| NJ American Water - Raritan | Brtidgewater, NJ | 615,430 | 601 | Detected |
| Baton Rouge Water Company | Baton Rouge, LA | 596,844 | 16 | Clean |
| Central Alabama Water System | Birmingham, AL | 585,000 | 13 | Detected |
| Albuquerque Water System | Albuquerque, NM | 560,326 | 2 | Clean |
| City of Fresno | Fresno, CA | 545,716 | 33 | Detected |
| Orlando Utilities Commission | Orlando, FL | 536,466 | 51 | Clean |
| Aurora City Of | Aurora, CO | 533,407 | 18 | Detected |
| City of Sacramento Main | Sacramento, CA | 520,407 | 4 | Detected |
| Pittsburgh Water & Sewer Auth | Pittsburgh, PA | 520,000 | 193 | Clean |
| Kansas City PWS | Kansas City, MO | 513,800 | 23 | Detected |
| Pinellas County Utilities | Largo, FL | 506,353 | 30 | Clean |
| McWa | Rochester, NY | 496,753 | 4 | Clean |
| Water District 1 of Johnson Co | Kansas City, KS | 482,000 | 5 | Detected |
| Hcwrd/South-Central | Tampa, FL | 473,500 | 65 | Detected |
| Long Beach Utilities Department | Long Beach, CA | 466,772 | 6 | Clean |
| Mesa City Of | Mesa, AZ | 466,000 | 1,739 | Detected |
| Colorado Springs Utilities | Colorado Springs, CO | 464,111 | 18 | Clean |
| Tacoma Water Division City Of | Tacoma, WA | 448,771 | 41 | Detected |
| Irvine Ranch Water District | Irvine, CA | 444,800 | 12 | Detected |
| Truckee Meadows Water Authority | Reno, NV | 442,000 | 1 | Detected |
| Virginia Beach, City Of | Virginia Beach, VA | 437,994 | 9 | Clean |
| North Fulton County | Alpharetta, GA | 434,517 | 18 | Clean |
| Minneapolis | Minneapolis, MN | 425,300 | 8 | Detected |
| Regional Water Authority | New Haven, CT | 418,900 | 62 | Detected |
| Tulsa | Tulsa, OK | 413,000 | 32 | Clean |
| Newport News, City Of | Newport News, VA | 407,300 | 13 | Detected |
| City of Arlington | Arlington, TX | 405,420 | 16 | Detected |
| Greenville Water (2310001) | Greenville, SC | 396,265 | 40 | Clean |
| Wichita, City Of | Wichita, KS | 395,699 | 11 | Clean |
| Saint Paul Regional Water Services | St. Paul, MN | 392,529 | 21 | Detected |
| Metropolitan District Commission | Hartford, CT | 390,887 | 3 | Clean |
| Chesterfield Co Central Water System | Chesterfield, VA | 389,897 | 0 | Detected |
| Winston-Salem, City Of | Pfafftown, NC | 388,060 | 123 | Clean |
| Salt Lake City Water System | Salt Lake City, UT | 381,174 | 222 | Detected |
| NJ American Water - Coastal North | Colts Neck, NJ | 377,613 | 75 | Detected |
| North las Vegas Utilities | North las Vegas, NV | 376,515 | 1 | Clean |
| Vancouver City Of | Vancouver, WA | 373,047 | 49 | Detected |
| Central Arkansas Water | Little Rock, AR | 368,455 | 3 | Clean |
| Toledo City Of | Toledo, OH | 360,000 | 26 | Detected |
| Aquarion-Eastern Fairfield County | Shelton, CT | 351,756 | 585 | Detected |
| Ocwa | Syracuse, NY | 350,000 | 7 | Detected |
| St Petersburg, City Of | St Petersburg, FL | 349,979 | 23 | Detected |
| City of Anaheim | Anaheim, CA | 348,593 | 5 | Detected |
| Manatee County Utilities Dept | Bradenton, FL | 347,800 | 18 | Clean |
| Alameda County Water District | Fremont, CA | 344,000 | 9 | Clean |