All water systems in Ohio
4,165 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Fulton/lucas Waterline Fulton County |
350 | 0 | 0 | |
|
Galloway Water System PWS Franklin County |
350 | 0 | 0 | |
|
Magnolia of Wooster Wayne County |
350 | 0 | 0 | |
|
Maple del Manor LLC Portage County |
350 | 1 | 0 | |
|
Mennonite Christian Assembly Wayne County |
350 | 0 | 0 | |
|
Ontario Christian Fellowship Richland County |
350 | 0 | 0 | |
|
Oromo Evangelical Church in Columbus PWS Fairfield County |
350 | 0 | 0 | |
|
Pak-A-Sak 37 PWS Darke County |
350 | 0 | 0 | |
|
Rivertree Lake PWS Stark County |
350 | 0 | 0 | |
|
S S Simon and Jude Catholic Church PWS Madison County |
350 | 0 | 0 | |
|
St. Edwards Church Geauga County |
350 | 0 | 0 | |
|
Xenia Dragway Operations LLC Greene County |
350 | 1 | 1 | |
|
Weaver Leather LLC Holmes County |
349 | 0 | 0 | |
|
Aqua Ohio Norlick Williams County |
345 | 1 | 1 | |
|
Harvest Square Mobile Home Park Champaign County |
345 | 0 | 0 | |
|
Kamp-A-Lott Logan County |
341 | 2 | 1 | |
|
Jefferson CO W&s District O Jefferson County |
340 | 4 | 2 | |
|
Little Creek Barn PWS Hardin County |
340 | 0 | 0 | |
|
Maplewood High School Trumbull County |
340 | 0 | 0 | |
|
Mwcd-Piedmont Marina and Campground PWS Belmont County |
340 | 0 | 0 | |
|
Vanlue Village PWS Hancock County |
340 | 1 | 0 | |
|
Bainbrook Water Company PWS Geauga County |
339 | 0 | 0 | |
|
Laurel Springs Water Co. Geauga County |
339 | 1 | 1 | |
|
Portage County WR Rivermoor Portage County |
339 | 1 | 1 | |
|
Rock of Grace Church Trumbull County |
338 | 0 | 0 | |
|
Aqua Ohio Firestone Trace Summit County |
336 | 0 | 0 | |
|
Impact Worship Center Mansfield Richland County |
335 | 0 | 0 | |
|
Odot Rest Area 7-33 EB Auglaize County |
333 | 0 | 0 | |
|
Odot Rest Area 7-34 WB Auglaize County |
333 | 0 | 0 | |
|
Odnr-Hocking Hills-Cedar Falls Hocking County |
331 | 0 | 0 | |
|
Buckeye Trails M Pickaway County |
330 | 6 | 2 | |
|
Kidron Town and Country Store Wayne County |
330 | 0 | 0 | |
|
Arrowhead Lake MHP Lucas County |
327 | 2 | 1 | |
|
Damascus Elementary PWS Mahoning County |
326 | 0 | 0 | |
|
Dollar General Store Pemberville 13981 Wood County |
325 | 0 | 0 | |
|
Great Lakes Cheese-Headquarters Geauga County |
325 | 0 | 0 | |
|
Shiloh Christian Union Church PWS Fulton County |
325 | 0 | 0 | |
|
Wilmot Village PWS Stark County |
325 | 4 | 0 | |
|
Saint Johns Lutheran Church PWS Union County |
323 | 0 | 0 | |
|
Cattle Creek Winery PWS Williams County |
320 | 0 | 0 | |
|
Education Alternatives Summit County |
320 | 1 | 1 | |
|
Hocking Hills Elementary School Hocking County |
320 | 2 | 1 | |
|
Maplewood Elementary K-6 Trumbull County |
320 | 0 | 0 | |
|
Mohican Castle Resort PWS Ashland County |
320 | 2 | 1 | |
|
Odnr-Hocking Hills-Ash Cave Hocking County |
320 | 0 | 0 | |
|
Stratton PWS Jefferson County |
320 | 2 | 1 | |
|
Beaverdam Village PWS Allen County |
319 | 0 | 0 | |
|
Clearfork MHP Richland County |
318 | 2 | 2 | |
|
Orchard Estates I Mhc, LLC Portage County |
316 | 1 | 0 | |
|
Morristown Public Water System Belmont County |
315 | 2 | 2 |
About this data
Rules violated counts the rules a system was in violation of in the past three years, including monitoring and reporting lapses; one rule can carry several violations. Unresolved is the number of those rules currently in violation at EPA's latest data refresh.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Ohio records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet.