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 |
|---|---|---|---|---|
| Redford Township | Redford, MI | 49,504 | 20 | Clean |
| Beaver Falls Muni Auth | Beaver Falls, PA | 49,500 | 705 | Detected |
| Greater Johnstown WA Riverside | Johnstown, PA | 49,500 | 186 | Clean |
| Port of Seattle/Seatac Airport | Seattle, WA | 49,483 | 14 | Clean |
| West Bloomfield Township | West Bloomfield, MI | 49,479 | 14 | Clean |
| Monroe | Monroe, MI | 49,467 | 20 | Clean |
| Downers Grove | Downers Grove, IL | 49,425 | 36 | Clean |
| Isabela | Santurce, PR | 49,419 | 522 | Detected |
| Green Mountain WSD | Lakewood, CO | 49,400 | 6 | - |
| Enid | Enid, OK | 49,347 | 82 | Clean |
| Pace Water System, Inc. | Pace, FL | 49,328 | 16 | Detected |
| Fort Bend County Wcid 2 | Stafford, TX | 49,173 | 6 | Detected |
| City of Maryville W&S Dept | Maryville, TN | 49,135 | 9 | Clean |
| Warren City PWS | Warren, OH | 49,130 | 197 | Detected |
| Longview Water Department | Longview, WA | 49,111 | 18 | Clean |
| Jacksonville City Of | Jacksonville, NC | 49,093 | 13 | Clean |
| Everett Water Dept. (Mwra) | Everett, MA | 49,075 | 23 | Clean |
| Wauwatosa Waterworks | Wauwatosa, WI | 49,064 | 13 | Clean |
| Bristol County Water Authority | Warren, RI | 49,000 | 154 | Clean |
| City of Lawrence Utilities | Indianapolis, IN | 49,000 | 38 | Clean |
| Valdosta | Valdosta, GA | 48,959 | 123 | Detected |
| Pinellas Park Water Dept | Pinellas Park, FL | 48,939 | 15 | Detected |
| Northglenn City Of | Northglenn, CO | 48,927 | 7 | Clean |
| Naval Station Norfolk | Norfolk, VA | 48,826 | 27 | Clean |
| Minot City Of | Minot, ND | 48,743 | 12 | Clean |
| Southwest Metropolitan WSD | Littleton, CO | 48,648 | 0 | - |
| Aqua PA West Chester | Bryn Mawr, PA | 48,600 | 188 | Detected |
| Commonwealth Utilities Corp (Saipan) | Saipan, MP | 48,524 | 82 | Detected |
| City of Huntsville | Huntsville, TX | 48,522 | 6 | Detected |
| Monroeville Municipal Auth | Monroeville, PA | 48,500 | 45 | Detected |
| City of Brea | Brea, CA | 48,479 | 3 | Clean |
| East Brunswick Water Utility | East Brunswick Twp, NJ | 48,474 | 83 | Detected |
| Cookeville Water Dept | Cookeville, TN | 48,455 | 14 | Clean |
| Newnan Utilities | Newnan, GA | 48,451 | 38 | Clean |
| Sanford, City Of | Sanford, NC | 48,350 | 154 | Detected |
| Cal Am - Lincoln Oaks | Sacramento, CA | 48,094 | 2 | Detected |
| Sjcu-Northwest Utilities WTP | St. Augustine, FL | 48,040 | 10 | Clean |
| Charlottesville, City Of | Charlottesville, VA | 48,019 | 18 | Clean |
| Aqua PA Shenango Valley WTP | Sharon, PA | 48,000 | 39 | Detected |
| Hicksville WD | Hicksville, NY | 48,000 | 9 | Detected |
| Washington Township Mua | Turnersville, NJ | 48,000 | 1,585 | Detected |
| Lake Worth Beach Utilities | Lake Worth, FL | 48,000 | 12 | Detected |
| US Department of the Army Fort Carson | Fort Carson, CO | 48,000 | 22 | Clean |
| Enterprise Water Works | Enterprise, AL | 48,000 | 393 | Clean |
| Cal/Am Water Company - San Marino | Rosemead, CA | 47,995 | 2 | Detected |
| Oviedo, City Of | Oviedo, FL | 47,933 | 58 | Clean |
| Glenview | Glenview, IL | 47,856 | 29 | Clean |
| Joint Municipal WSC (Sc3220003) | Lexington, SC | 47,838 | 44 | Detected |
| New Kensington Muni Auth | New Kensington, PA | 47,800 | 47 | Clean |
| Holley-Navarre Water System | Navarre, FL | 47,793 | 38 | Clean |