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 |
|---|---|---|---|---|
| Napoleon City | Napoleon, OH | 8,858 | 106 | Detected |
| London Utility Commission | London, KY | 8,855 | 65 | Detected |
| Cca - Eloy Complex | Eloy, AZ | 8,852 | 196 | Clean |
| Malmstrom Air Force Base | Malmstrom Air Force Base, MT | 8,850 | 82 | Detected |
| Glencoe | Glencoe, IL | 8,849 | 13 | Clean |
| Coffeyville, City Of | Coffeyville, KS | 8,847 | 80 | Detected |
| Florham Park Water Dept | Florham Park, NJ | 8,846 | 372 | Detected |
| Molino Utilities, Inc. | Molino, FL | 8,845 | 47 | Clean |
| Eastman | Eastman, GA | 8,844 | 29 | Clean |
| East Moore Water District | Carthage, NC | 8,842 | 19 | Detected |
| Town of Sunnyvale | Sunnyvale, TX | 8,839 | 68 | Detected |
| North Dallas Water Authority | Valley Grande, AL | 8,838 | 67 | Clean |
| Harris County MUD 391 | Houston, TX | 8,835 | 14 | Clean |
| Providence City Water System | Hyrum, UT | 8,830 | 103 | Clean |
| Lake Villa | Lake Villa, IL | 8,829 | 75 | Clean |
| Jessamine S Elkhorn Water Dist | Nicholasville, KY | 8,826 | 110 | Clean |
| New Baltimore Regional | Warrenton, VA | 8,818 | 31 | Detected |
| Lee Hammond Water | Bloomfield, NM | 8,817 | 91 | Clean |
| Greenville | Greenville, MI | 8,816 | 80 | Detected |
| Henderson Water Dept | Jackson, TN | 8,810 | 10 | Clean |
| Plainville Water Department | Plainville, MA | 8,805 | 62 | Detected |
| PA American Water Punxsy | New Castle, PA | 8,800 | 5 | Clean |
| Aqua PA Friendship | Bryn Mawr, PA | 8,800 | 216 | Detected |
| Morgan County Rural Water Company | Martinsville, IN | 8,800 | 114 | Clean |
| Awa Buckhorn Plant | Sutter Creek, CA | 8,791 | 13 | Clean |
| City of Waterford | Waterford, CA | 8,788 | 7 | Clean |
| Cross County Rural Water Sys | Hickory Ridge, AR | 8,788 | 13 | Clean |
| Avondale Irrigation Dist | Hayden, ID | 8,785 | 49 | Clean |
| Pryor | Pryor, OK | 8,784 | 34 | Clean |
| City of Liberty Hill | Liberty Hill, TX | 8,777 | 136 | - |
| Walnut Grove WSC | Whitehouse, TX | 8,775 | 46 | Clean |
| Iberia Water Works District 3 - Coteau | New Iberia, LA | 8,775 | 61 | Clean |
| Jackson County PWSD 15 | Lees Summit, MO | 8,772 | 14 | Clean |
| Wwks District 2 of St Helena | Greensburg, LA | 8,772 | 12 | Clean |
| Cortez City Of | Cortez, CO | 8,770 | 190 | Clean |
| Georgetown Water Department | Georgetown, MA | 8,766 | 100 | Clean |
| Needles, City Of | Needles, CA | 8,766 | 17 | Clean |
| Oak Grove Utilities Office | Oak Grove, KY | 8,762 | 126 | Detected |
| Mascoutah | Mascoutah, IL | 8,759 | 43 | Clean |
| City of Wharton | Wharton, TX | 8,756 | 187 | Clean |
| Othello Water Department | Othello, WA | 8,755 | 159 | Clean |
| Magnolia Plantation Water System Inc | Abbeville, LA | 8,754 | 22 | Clean |
| City of Breaux Bridge Water System | Breaux Bridge, LA | 8,754 | 52 | Clean |
| Preston County Psd 4 | Bruceton Mills, WV | 8,753 | 129 | Clean |
| Cross Timbers WSC | Argyle, TX | 8,751 | 35 | Detected |
| Farmingdale (V) | Farmingdale, NY | 8,744 | 8 | Clean |
| IL American-Jerseyville | Godfrey, IL | 8,737 | 189 | Clean |
| City of Graham | Graham, TX | 8,732 | 48 | Detected |
| North Mission Glen MUD | Houston, TX | 8,730 | 6 | Clean |
| Mitchell Water System Inc | Tuscaloosa, AL | 8,730 | 6 | Clean |