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 |
| Vandalia Cong Jehovah Witnesses PWS | Tipp City, OH | 75 | 28 | - |
| Clearfork Marina | Mansfield, OH | 75 | 30 | - |
| Grace Lutheran Church Elmore | Elmore, OH | 75 | 51 | - |
| Shade Acres Campground and RV Park | Monroeville, OH | 75 | 107 | - |
| Odnr-Deer Creek State Park/Wr PWS | Conover, OH | 75 | 3 | - |
| Odnr-Deer Creek State Park/Er PWS | Conover, OH | 75 | 0 | - |
| Mulligan Springs Golf Course PWS | Mogadore, OH | 75 | 111 | - |
| 1875 Winery | Hartville, OH | 75 | 0 | - |
| Templed Hills Campground | Bellville, OH | 75 | 50 | - |
| Pleasant Hill Outdoor Center | Perrysville, OH | 75 | 137 | - |
| Cornerstone Grace Brethren Ch Mansfield | Mansfield, OH | 75 | 33 | - |
| Old Dog Outpost | Mansfield, OH | 75 | 8 | - |
| Fremont Yacht Club | Fremont, OH | 75 | 110 | - |
| Brook Park Estates MHP | Lima, OH | 75 | 350 | - |
| First Christian Church | Tiffin, OH | 75 | 94 | - |
| Rivers Edge Sports Bar PWS | Sidney, OH | 75 | 28 | - |
| Pj's Stop 47 LLC PWS | Port Jefferson, OH | 75 | 74 | - |
| Riverside Bar and Grill | Massillon, OH | 75 | 19 | - |
| Oasis Surgery Center | North Canton, OH | 75 | 0 | - |
| Grace Community Church of Alliance | Alliance, OH | 75 | 3 | - |
| North End 2 | Hudson, OH | 75 | 62 | - |
| Franklin Park Civic Center | New Franklin, OH | 75 | 104 | - |
| Portage Lakes Library | Akron, OH | 75 | 3 | - |
| Liberty Green Plaza | Akron, OH | 75 | 3 | - |
| Biggins Big Dip PWS | Barberton, OH | 75 | 15 | - |
| East Liberty Park Restrooms | Green, OH | 75 | 0 | - |
| Elmview Professional Park 1 PWS | Cortland, OH | 75 | 55 | - |
| Elmview Professional Park 2 PWS | Cortland, OH | 75 | 51 | - |
| Ceva Logistics | East Liberty, OH | 75 | 349 | - |
| Sundial Mobile Home Park | Dover, OH | 75 | 85 | - |
| D + S Hillcrest PWS | Wooster, OH | 75 | 38 | - |
| Econolodge Motel | Wooster, OH | 75 | 59 | - |
| Scot Industries Inc | Wooster, OH | 75 | 172 | - |
| Pleasant Ridge Dunkard Breth Ch | West Unity, OH | 75 | 30 | - |
| Church of the Good Shepherd - Wayne | Wayne, OH | 75 | 14 | - |
| Tee Pee Campground | Upper Sandusky, OH | 75 | 24 | - |
| Community Gardens MHP | Grove City, OH | 74 | 183 | - |
| Alton RV Park PWS | Galloway, OH | 74 | 4 | - |
| Grandview MHP a PWS | Mount Vernon, OH | 74 | 30 | - |
| Wren Restaurant | Ohio City, OH | 74 | 8 | - |
| Schmidt Machine Company | Upper Sandusky, OH | 74 | 29 | - |
| Carey Conservation Campground | Carey, OH | 74 | 67 | - |
| Heritage Springs Campground | Vanlue, OH | 73 | 49 | - |
| Houston Plumbing PWS | Newark, OH | 73 | 205 | - |
| Pelican Cove | Deerfield, OH | 73 | 31 | - |
| Evans Family Ranch Camp | New Carlisle, OH | 72 | 46 | - |
| Camp Frederick-Dining | Rogers, OH | 72 | 26 | - |
| Camp Frederick-Campground | Rogers, OH | 72 | 41 | - |
| Geneva Hills - Geneva Lodge | Lancaster, OH | 72 | 174 | - |
| Dayton VA Bldg 320 Pod B | Dayton, OH | 72 | 12 | - |