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 |
| Country Porch Winery PWS | Cortland, OH | 82 | 3 | - |
| Word of Mouth BBQ | Doylestown, OH | 82 | 62 | - |
| Island View Campground | McCutchenville, OH | 82 | 5 | - |
| Aqua Ohio - Southwood | Massillon, OH | 81 | 1 | - |
| Grove City Church of God | Grove City, OH | 81 | 8 | - |
| Alpine Valley Ski Area | Chesterland, OH | 81 | 84 | - |
| Joy of Living Ministries Inc PWS | Brinkhaven, OH | 81 | 80 | - |
| Louisville Gardens Health Center | Louisville, OH | 81 | 12 | - |
| Duck Creek Golf Course | Warren, OH | 81 | 59 | - |
| River of Life Worship Center | Montpelier, OH | 81 | 105 | - |
| Carter Lumber Store 65-8 | Columbus Grove, OH | 80 | 5 | - |
| Salem Mennonite Church - Elida | Elida, OH | 80 | 116 | - |
| Green Acres MHP | Kent, OH | 80 | 83 | - |
| Lds Church Ashland | Paris, OH | 80 | 72 | - |
| Cowen Truck Lines | Defiance, OH | 80 | 0 | - |
| Wapakoneta Country Club | Wpakoneta, OH | 80 | 15 | - |
| Mwcd - Camp Firebird PWS | New Philadelphia, OH | 80 | 14 | - |
| Harsh Memorial United Methodist Church | Carrollton, OH | 80 | 66 | - |
| Evergreen Edgewood MHP PWS | Kettering, OH | 80 | 47 | - |
| Chaps PWS | Springfield, OH | 80 | 146 | - |
| Springfield New Life Church | Springfield, OH | 80 | 49 | - |
| Taqueria Senor Piquin Rizera PWS | Springfield, OH | 80 | 17 | - |
| Possum RD Church of God Fellowship Hall | Springfield, OH | 80 | 92 | - |
| Zeps Pizza | Beloit, OH | 80 | 11 | - |
| Trickling Springs Country Store PWS | Leetonia, OH | 80 | 4 | - |
| Palestine Church of Christ PWS | Palestine, OH | 80 | 23 | - |
| Unity Fellowship Church PWS | Washington Court House, OH | 80 | 0 | - |
| Lockbourne Freewill Baptist Church | Groveport, OH | 80 | 22 | - |
| Russian Baptist Church | Dublin, OH | 80 | 64 | - |
| Tarkett South | Chagrin Falls, OH | 80 | 84 | - |
| Cedar Hill Campground | Leesburg, OH | 80 | 56 | - |
| Hocking Hills Coffee Emporium PWS | Logan, OH | 80 | 0 | - |
| Holmesville Church of Christ | Holmesville, OH | 80 | 42 | - |
| Coblentz Chocolate Company PWS | Walnut Creek, OH | 80 | 0 | - |
| Kirkmont Christian Education Center | Zanesfield, OH | 80 | 55 | - |
| Condo Camping Public Water System | Port Orange, OH | 80 | 41 | - |
| Midwest Express 2G PWS | East Liberty, OH | 80 | 2 | - |
| Big Bear Campground | Ft. Jennings, OH | 80 | 0 | - |
| Cooley Canal Yacht Club-Clubhouse | Northwood, OH | 80 | 34 | - |
| The Roadhouse Restaurant - Swanton | Swanton, OH | 80 | 76 | - |
| Jehovah Witness Kingdom | London, OH | 80 | 54 | - |
| London Christian Fellowship PWS | London, OH | 80 | 8 | - |
| 36 Skate Club | Piqua, OH | 80 | 21 | - |
| Cooper Hatchery | Oakwood, OH | 80 | 13 | - |
| Maranatha Bible Church | Glenford, OH | 80 | 99 | - |
| Sunset Mobile Home Park | Boyton Beach, OH | 80 | 747 | - |
| Countryside Campground | Mogadore, OH | 80 | 25 | - |
| Odnr-West Branch-East Boat Ramp | Columbus, OH | 80 | 11 | - |
| Cocca Mantua Plaza | Youngstown, OH | 80 | 5 | - |
| Country Meadow Care Center | Bellville, OH | 80 | 147 | - |