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 |
| Echo Lake Community Association | Hinckley, OH | 58 | 54 | - |
| Montezuma Bay Resort | Celina, OH | 58 | 8 | - |
| Pleasant Park Mobile Court | Warren, OH | 58 | 80 | - |
| Kevin B Cochran Dds Inc PWS | Orrville, OH | 58 | 25 | - |
| Old Annie Oakley | Greenville, OH | 57 | 11 | - |
| Metzenbaum School | Chesterland, OH | 57 | 1 | - |
| Winding Creek Estates | Newark, OH | 57 | 31 | - |
| St Albans Golf Club PWS | Alexandria, OH | 57 | 11 | - |
| G's Pizza World & Ice Cream - Damascus | Damascus, OH | 57 | 3 | - |
| Rockwater Campground PWS | Franklin Furnace, OH | 57 | 18 | - |
| Left Field | New Riegel, OH | 57 | 39 | - |
| Scott Process Systems Inc Plant 1 PWS | Hartville, OH | 57 | 8 | - |
| Champion Baptist Church PWS | Cortland, OH | 57 | 7 | - |
| Ohio Operating Engineers-Cygnet | Cygnet, OH | 57 | 15 | - |
| Odnr-Mohican State Forest/Group Camp | Columbus, OH | 56 | 0 | - |
| VFW Post 8586-Robert L Frank | Perrysville, OH | 56 | 37 | - |
| Creative Learning Works | Springfield, OH | 56 | 15 | - |
| Harvest Inn - Homeworth | Homeworth, OH | 56 | 19 | - |
| Greentree Water Company | Moreland Hills, OH | 56 | 648 | - |
| Opalocka Drive Office Building, LLC. | Chesterland, OH | 56 | 37 | - |
| Pfeiffer Station General Store | Kenton, OH | 56 | 0 | - |
| Triple Bean Coffee Company and Pizza PWS | Newark, OH | 56 | 20 | - |
| Welcome Woods-East Well | Columbus, OH | 56 | 137 | - |
| Newport Cccu PWS | London, OH | 56 | 7 | - |
| Kozy Kamp Ground - Bathhouse | Celina, OH | 56 | 16 | - |
| Six Acres Estates Amlc (Dba Leking Farm) | Bradner, OH | 56 | 9 | - |
| Lake View Village MHP | Minster, OH | 56 | 182 | - |
| Bayloff Stamped Products-Kinsman | Kinsman, OH | 56 | 36 | - |
| Katies Korner Inc | Girard, OH | 56 | 29 | - |
| Cedar Oaks Wellness Center | Oregonia, OH | 56 | 917 | - |
| Mwcd Leesville S Fork L-1 | New Philadelphia, OH | 55 | 49 | - |
| Bible Baptist Ministries | Wellsville, OH | 55 | 41 | - |
| Ranch of Opportunity PWS | Dayton, OH | 55 | 61 | - |
| Junction Auto Sales, Inc | Chardon, OH | 55 | 40 | - |
| Stockers by Anne | Thompson, OH | 55 | 25 | - |
| Junction Buick | Chardon, OH | 55 | 107 | - |
| Trillium Farm Holdings-Mt Victory | Mt. Vernon, OH | 55 | 434 | - |
| Lost Hollow Comfort Station #14 | Logan, OH | 55 | 0 | - |
| Canal Dover Furniture | Millersburg, OH | 55 | 47 | - |
| Wiers Farm Amlc #02 PWS | Willard, OH | 55 | 44 | - |
| Dutch Maid Logistics | Willard, OH | 55 | 0 | - |
| Church of Christ PWS | Bellefontaine, OH | 55 | 48 | - |
| Nk Parts Industries Inc PWS | Sidney, OH | 55 | 106 | - |
| Spiritual Center Maria Stein - Montezuma | Maria Stein, OH | 55 | 12 | - |
| M & H MHP, LLC | Brooklyn, OH | 55 | 372 | - |
| Old Country Inn | Mantua, OH | 55 | 40 | - |
| Mansfield Inn Motel | Barstow, OH | 55 | 10 | - |
| Bascom Community Church | Bascom, OH | 55 | 12 | - |
| Schoner Chevrolet Sales | Hartville, OH | 55 | 21 | - |
| Spuds Corner PWS | Massillon, OH | 55 | 107 | - |