All water systems in Ohio
4,165 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Ridgedale Jr/sr High School Marion County |
465 | 0 | 0 | |
|
Sun Valley Family Campground Allen County |
462 | 2 | 1 | |
|
Fletcher Village PWS Miami County |
461 | 1 | 1 | |
|
Lexington Elementary School Stark County |
458 | 0 | 0 | |
|
Circle K 5277 PWS Geauga County |
455 | 0 | 0 | |
|
The Pit Stop PWS Union County |
455 | 0 | 0 | |
|
Biery Cheese Company Stark County |
454 | 0 | 0 | |
|
Shelly Acres Water Association Richland County |
454 | 1 | 1 | |
|
Lake Wapusun North Well PWS Wayne County |
453 | 2 | 0 | |
|
Lake Wapusun South Well PWS Wayne County |
453 | 2 | 1 | |
|
Jennings Local School Putnam County |
452 | 0 | 0 | |
|
Canaan Middle School Madison County |
450 | 1 | 1 | |
|
Christ Our King PWS Logan County |
450 | 0 | 0 | |
|
Colonial Villa Mhc, LLC Mahoning County |
450 | 1 | 0 | |
|
Donnelsville Elementary Campus Clark County |
450 | 1 | 1 | |
|
Dusty Armadillo Portage County |
450 | 0 | 0 | |
|
Fayette Co.-Culpepper Subdivision Fayette County |
450 | 1 | 0 | |
|
Florida Village Henry County |
450 | 4 | 1 | |
|
Giant Oil #450 Wayne County |
450 | 2 | 0 | |
|
Glenford Village Perry County |
450 | 2 | 1 | |
|
Gospel Haven Mennonite Church PWS Holmes County |
450 | 0 | 0 | |
|
Hinckley Elementary School New PWS Medina County |
450 | 0 | 0 | |
|
Hope Community Church PWS Summit County |
450 | 0 | 0 | |
|
Lindsey Elementary School Geauga County |
450 | 0 | 0 | |
|
Mount Pleasant PWS Jefferson County |
450 | 1 | 1 | |
|
Rustic Ridge MHP Fairfield County |
450 | 1 | 1 | |
|
Troy Oaks Homes Geauga County |
450 | 1 | 0 | |
|
Westview MHP Wayne County |
450 | 2 | 1 | |
|
Murray City Village PWS Hocking County |
449 | 1 | 1 | |
|
Newbury Shopping Center PWS Geauga County |
449 | 0 | 0 | |
|
Hayesville Village Ashland County |
448 | 0 | 0 | |
|
Pleasant City, Village of Guernsey County |
447 | 0 | 0 | |
|
Lindsey Village PWS Sandusky County |
446 | 1 | 1 | |
|
North Nimishillen Elementary Stark County |
446 | 1 | 1 | |
|
Reno Water and Sewer Kardex Washington County |
446 | 2 | 1 | |
|
Chester Commons Plaza-C/b Development-Ca Geauga County |
443 | 0 | 0 | |
|
Tcmsd-Dundee PWS Tuscarawas County |
441 | 1 | 1 | |
|
Clarington Village PWS Monroe County |
440 | 0 | 0 | |
|
Fohl Village MHP Stark County |
440 | 4 | 1 | |
|
Nelson Ledges Quarry Park Portage County |
440 | 0 | 0 | |
|
Northwestern W and SD CO RD P PWS Henry County |
440 | 0 | 0 | |
|
Chateau Estates MHP PWS Clark County |
430 | 2 | 0 | |
|
Pleasant Hill Baptist Church & Preschool Wayne County |
429 | 1 | 0 | |
|
Castle Nursing Homes, INC PWS Holmes County |
428 | 1 | 0 | |
|
Little Strength Christian Champaign County |
428 | 0 | 0 | |
|
Jonathan Alder Junior High School Madison County |
426 | 1 | 1 | |
|
Sugar Grove Village PWS Fairfield County |
426 | 1 | 1 | |
|
Eastwood Middle School Wood County |
425 | 0 | 0 | |
|
Love's Truckstop Portage County |
425 | 1 | 0 | |
|
Mount Eaton Village PWS Wayne County |
425 | 3 | 1 |
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.