Public Water Systems
4,181 active public water systems in OH, tracked from EPA's Safe Drinking Water Information System (SDWIS) across all 50 states. See our methodology.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| Whitehouse Village | Whitehouse, OH | 5,200 | 52 | Detected |
| Mid-Ohio WSD Water District 1 | Columbus, OH | 5,176 | 37 | Clean |
| New Lexington | New Lexington, OH | 5,161 | 147 | Clean |
| Erie Co Margaretta District | Huron, OH | 5,131 | 26 | Clean |
| Byesville | Byesville, OH | 5,104 | 528 | Clean |
| St. Clairsville, City of PWS | St. Clairsville, OH | 5,097 | 262 | Detected |
| Munroe Falls City PWS | Munroe Falls, OH | 5,042 | 22 | Clean |
| Chagrin Falls Village PWS | Chagrin Falls, OH | 4,991 | 53 | Clean |
| West Milton Village PWS | West Milton, OH | 4,890 | 330 | Clean |
| Ottawa Village | Ottawa, OH | 4,863 | 561 | Detected |
| Wellington Village PWS | Wellington, OH | 4,802 | 79 | Clean |
| Greene County Eastern Regional PWS | Beavercreek, OH | 4,800 | 2 | Clean |
| Northwestern W and SD - Portage | Bowling Green, OH | 4,776 | 13 | Detected |
| Coldwater Village | Coldwater, OH | 4,774 | 309 | Clean |
| East Palestine Village PWS | East Palestine, OH | 4,761 | 37 | Clean |
| Jefferson Regional Water Authority | Miamisburg, OH | 4,750 | 190 | Detected |
| Medina Co/Southern Water Dist PWS | Columbia Station, OH | 4,708 | 2 | Clean |
| Crestline Village | Crestline, OH | 4,630 | 19 | Clean |
| Oak Harbor Village | Oak Harbor, OH | 4,615 | 22 | Clean |
| Greenfield Village PWS | Greenfield, OH | 4,600 | 39 | Clean |
| West Jefferson Village PWS | West Jefferson, OH | 4,488 | 29 | Clean |
| Mid-Ohio WSD Plain City WTP | Columbus, OH | 4,467 | 174 | Clean |
| Waverly City PWS | Waverly, OH | 4,433 | 79 | Detected |
| Monroe Water Systems | Laings, OH | 4,334 | 60 | Clean |
| Lexington Village | Lexington, OH | 4,320 | 162 | Clean |
| Ashville Village PWS | Ashville, OH | 4,298 | 97 | Clean |
| Montpelier Village | Montpelier, OH | 4,280 | 30 | Clean |
| Bellaire Public Water System | Bellaire, OH | 4,278 | 340 | Detected |
| Georgetown Village PWS | Georgetown, OH | 4,243 | 8 | Detected |
| Blanchester Village PWS | Fayetteville, OH | 4,243 | 95 | Detected |
| Clark County Park Layne PWS | Springfield, OH | 4,221 | 25 | Clean |
| Sheffield Village PWS | Sheffield Village, OH | 4,165 | 20 | Clean |
| Cincinnati VA Medical Center | Cincinnati, OH | 4,152 | 0 | - |
| South Point Village | South Point, OH | 4,133 | 87 | Detected |
| Bluffton Village | Bluffton, OH | 4,125 | 196 | Detected |
| Waynesville Village PWS | Waynesville, OH | 4,100 | 41 | Clean |
| Southern Perry Co-Congo | Corning, OH | 4,029 | 59 | Clean |
| Aqua Ohio - Masury | Struthers, OH | 4,016 | 24 | Detected |
| Cedarville University | Cedarville, OH | 4,000 | 40 | Clean |
| Trihealth Good Samaritan Hospital | Cincinnati, OH | 4,000 | 0 | - |
| Minerva Village PWS | Minerva, OH | 4,000 | 101 | Clean |
| New Lebanon Village PWS | New Lebanon, OH | 3,995 | 48 | Clean |
| Kettering Health Main Campus | Hamilton, OH | 3,946 | 4 | - |
| Wintersville Village PWS | Wintersville, OH | 3,924 | 14 | Clean |
| Bethel Village PWS | Bethel, OH | 3,900 | 123 | Detected |
| Newcomerstown Village PWS | Newcomerstown, OH | 3,882 | 98 | Clean |
| Swanton Village | Swanton, OH | 3,855 | 89 | Clean |
| Elida Village | Elida, OH | 3,848 | 114 | Detected |
| Yellow Springs Village PWS | Yellow Springs, OH | 3,761 | 9 | Detected |
| Miami Co-Camp Troy PWS | Troy, OH | 3,742 | 20 | Clean |