All water systems in Ohio
441 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Odnr-Guilford Lake State Park-Crossers Columbiana County |
25 | 0 | 0 | |
|
Odnr-Jefferson Lake ST Pk-Picnic 3 Jefferson County |
25 | 0 | 0 | |
|
Odnr-Lake Logan Picnic Logan · Hocking County |
25 | 0 | 0 | |
|
Odnr-Shreve Lake Wayne County |
25 | 0 | 0 | |
|
Ohio Power/hook Lake-A1 Morgan County |
25 | 0 | 0 | |
|
Ohio Power/hook Lake-A3 Morgan County |
25 | 0 | 0 | |
|
Ohio Power/hook Lake-A4 Morgan County |
25 | 0 | 0 | |
|
Paradise Lake Park-Star Lite Columbiana County |
25 | 0 | 0 | |
|
Park Mgr,harrison Lake Park Fulton County |
25 | 0 | 0 | |
|
Pine Valley Lake Park 2 PWS North Canton · County |
25 | 0 | 0 | |
|
Rainbow Lakes Columbiana County |
25 | 0 | 0 | |
|
Round-Up Lake-Apts Mantua · Portage County |
25 | 0 | 0 | |
|
Round-Up Lake-Well 11&12 Portage County |
25 | 0 | 0 | |
|
Supt,hansel & Gretel Center Brady Lake · Portage County |
25 | 0 | 0 | |
|
Symmes Lake Butler County |
25 | 0 | 0 | |
|
Terrace Lake Golf Club Ashland County |
25 | 0 | 0 | |
|
Twin Hill Fishing Lake Butler County |
25 | 0 | 0 | |
|
Usce/senecaville Lake Guernsey County |
25 | 0 | 0 | |
|
Mgr;hidden Lake Manor Apts. Lucas County |
24 | 0 | 0 | |
|
Lakeview Market Logan County |
22 | 0 | 0 | |
|
Alken Lakes Resort-West Logan County |
20 | 0 | 0 | |
|
Crystal Lake Swim Club Clark County |
20 | 0 | 0 | |
|
Lake Amanda Club PWS Auglaize County |
15 | 0 | 0 | |
|
Medlake Lions Club/bball Medway · Clark County |
15 | 0 | 0 | |
|
Fenner's Lake Camp Shelby County |
14 | 0 | 0 | |
|
Pauls Lakes Darke County |
8 | 0 | 0 | |
|
Lake Brenda Butler County |
4 | 0 | 0 | |
|
Odnr-Kiser Lake-1 Champaign County |
4 | 0 | 0 | |
|
Lakeway Court Clinton County |
2 | 0 | 0 | |
|
Odnr-Lake Loramie Well 2 Shelby County |
2 | 0 | 0 | |
|
Odnr-Lake Loramie Well 4 Shelby County |
2 | 0 | 0 | |
|
Odnr-Lake Loramie-Well 1 Shelby County |
2 | 0 | 0 | |
|
Odnr-Lake Loramie-Well 10 Shelby County |
2 | 0 | 0 | |
|
Odnr-Lake Loramie-Well 5 Shelby County |
2 | 0 | 0 | |
|
Odnr-Lake Loramie-Well 7 Shelby County |
2 | 0 | 0 | |
|
Odnr-Lake Loramie-Well 8 Shelby County |
2 | 0 | 0 | |
|
B and L Fishing Lake Montgomery County |
1 | 0 | 0 | |
|
Odnr-Indian Lake ST Pk-1 Logan County |
1 | 0 | 0 | |
|
Sulphurgrove Fishing Lake Montgomery County |
1 | 0 | 0 | |
|
Lakes End Carroll County |
0 | 0 | 0 | |
|
Rainbow Lake Greene County |
0 | 0 | 0 |
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.