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 |
| Bradleys of Sterling | Sterling, OH | 100 | 18 | - |
| Calvary Assembly of God Church | Orrville, OH | 100 | 456 | - |
| Orrville Grace Brethren Church | Orrville, OH | 100 | 15 | - |
| Wooster Motor Ways Inc. | Wooster, OH | 100 | 20 | - |
| Orr Valley Creamery | Orrville, OH | 100 | 39 | - |
| Rayco Manufacturing, LLC - Building 2 Pw | Wooster, OH | 100 | 31 | - |
| Geyers Chapel Artesian Well PWS | Wooster, OH | 100 | 8 | - |
| D and L Town and Country | Alvordton, OH | 100 | 4 | - |
| St Johns Hilltop Preschool | Stony Ridge, OH | 100 | 52 | - |
| Leesville Land LLC | Hopedale, OH | 99 | 0 | - |
| Concord Care Center of Hartford | Fowler, OH | 99 | 209 | - |
| Game Time Sports Center | Urbana, OH | 98 | 37 | - |
| Honey Run Christian School PWS | Killbuck, OH | 98 | 4 | - |
| Wiers Farm Amlc #03 (03/04 B) PWS | Willard, OH | 98 | 27 | - |
| Tammis Mobile Village Ltd. PWS | Scott, OH | 98 | 416 | - |
| Southern Perry Co-Irish Ridge | Corning, OH | 98 | 17 | - |
| Telesis Technologies Inc | Circleville, OH | 98 | 127 | - |
| Tricor Metals | Wooster, OH | 98 | 124 | - |
| Camp Bethany - Bathhouse | Ashland, OH | 96 | 50 | - |
| Spring Valley MHP | South Solon, OH | 96 | 268 | - |
| Bulldog's Bar and Grill | Youngstown, OH | 96 | 62 | - |
| Foundations | New Paris, OH | 96 | 216 | - |
| Edgewood Estates | Strongsville, OH | 96 | 2 | - |
| Wolf Creek Winery | Norton, OH | 96 | 29 | - |
| Blue Room Tavern | Kirby, OH | 96 | 110 | - |
| Thieman Quality Metal Fab Company | New Bremen, OH | 95 | 60 | - |
| Hilton Capital Group PWS | Cincinnati, OH | 95 | 3 | - |
| Spread Eagle Tavern | Hanoverton, OH | 95 | 61 | - |
| Reithoffer Gallery | Chagrin Falls, OH | 95 | 0 | - |
| Coble Village MHP | Bethlehem, OH | 95 | 219 | - |
| Camp Obannon | Newark, OH | 95 | 84 | - |
| Highwater United Ch. of Christ PWS | Newark, OH | 95 | 33 | - |
| Oak Openings - Evergreen Lake | Toledo, OH | 95 | 37 | - |
| Oak Openings - Springbrook Area | Toledo, OH | 95 | 41 | - |
| Cooper Farms Central Egg Processing | Coldwater, OH | 95 | 64 | - |
| Olde English Outfitters | Tipp City, OH | 95 | 0 | - |
| Dayton VA Bldg 320 Pod A | Dayton, OH | 95 | 15 | - |
| Dayspring Assisted Living and Care | Mansfield, OH | 95 | 107 | - |
| Hanley Village Water Association | Mansfield, OH | 95 | 68 | - |
| Camp Otyokwah | Butler, OH | 95 | 8 | - |
| The Pavilion at Canal Fulton | Canal Fulton, OH | 95 | 223 | - |
| Louisville Mobile Home Park | Hudson, OH | 95 | 192 | - |
| Meadows Restaurant | Springfield, OH | 94 | 75 | - |
| Springfield Antique Center | Springfield, OH | 94 | 61 | - |
| Oakland Church of the Brethren | Gettysburg, OH | 94 | 52 | - |
| Company Wrench PWS | Carroll, OH | 94 | 8 | - |
| Huntsburg Community Center | Huntsburg, OH | 94 | 219 | - |
| Clearfork Campground | Mansfield, OH | 94 | 20 | - |
| Rohrer Hayesville | Wadsworth, OH | 93 | 17 | - |
| Round Lake Christian Assembly-Lodge | Lakeville, OH | 93 | 11 | - |