Tapcensus

All water systems in Ohio

4,165 systems

SystemServesStatusRules violated, 3 yrUnresolved
Olesia's Taverne of Richfield
Summit County 		260 2 1
Wilderness Center INC
Stark County 		260 0 0
Hcwsd-Unionvale-Kenwood
Harrison County 		257 1 1
Millersville ST Mary Church
Sandusky County 		256 0 0
Amesville Public Water System
Athens County 		255 4 3
Insource Technologies PWS
Paulding County 		255 0 0
Odnr-Quail Hollow Manor House
Stark County 		255 0 0
Pax Machine Works
Mercer County 		255 0 0
Lakeview Marathon
Logan County 		253 2 1
Standing Rock Farms
Lake County 		252 0 0
Winbury Professional Center PWS
Geauga County 		252 0 0
Mwcd-Clendening Marina
Harrison County 		251 1 1
Bainbridge Center Bldg.
Geauga County 		250 1 0
Buurma Farms Amlc 1 PWS
Huron County 		250 0 0
Clampco Products
Medina County 		250 0 0
Conner Community Park Restroom Bldg #1
Sandusky County 		250 0 0
Conner Community Park Restroom Bldg #2
Sandusky County 		250 0 0
Fairways at Twin Lakes-Cabin Pro Shop
Portage County 		250 0 0
Farmersville/jackson Twp Rec Comm Ctr
Montgomery County 		250 0 0
Legacy Springs
Knox County 		250 0 0
Life in Christ Fellowship PWS
Madison County 		250 0 0
Mantua Mobile Home Park
Portage County 		250 2 1
Marion Sunoco PWS
Marion County 		250 0 0
Oakdale Water District
Perry County 		250 1 1
South Range Local Schools Ath Complex
Mahoning County 		250 0 0
ST Louis Catholic Church
Darke County 		250 0 0
Stillwater Prairie Reserve PWS
Miami County 		250 0 0
Stoneybrooke Village MHP
Trumbull County 		250 4 0
The Pond Ice Rink PWS
Geauga County 		250 0 0
Whitetail Run Homeowners
Geauga County 		250 2 1
Woodhaven Swim and Tennis Club, INC
Greene County 		250 1 1
Twin Acres RV Park
Lucas County 		249 0 0
Gibsonburg Truck Stop
Sandusky County 		248 2 1
Schmidtys PWS
Licking County 		248 0 0
The Way International
Shelby County 		248 1 0
Crouse Mobile Home Park & Sales, LLC
Butler County 		247 4 3
Rock of Ages School and Church
Wayne County 		247 0 0
Rex Hill Estates, LLC
Summit County 		246 1 0
Bethany Mennonite Church-Hartville
Stark County 		245 0 0
Mid-Ohio Sports Maintenance
Morrow County 		245 2 2
The Grove Comm. Christian Church PWS
Fairfield County 		245 0 0
Twin Rivers Water Corporation
Hamilton County 		245 2 1
Wildwood Acres Campground
Ashtabula County 		244 2 1
Camp Sugarbush Lodge
Trumbull County 		242 2 1
Deer Meadows MHP
Mahoning County 		242 0 0
Hcwsd Georgetown
Harrison County 		242 1 1
Kinetico Incorporated
Geauga County 		242 0 0
Marlboro Elementary School
Stark County 		242 1 1
The Lost Horizons LLC PWS
Holmes County 		242 1 0
YMCA Willson Center-Dining PWS
Logan County 		242 1 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.