All water systems in Ohio
4,165 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Manchester High School Summit County |
566 | 0 | 0 | |
|
Medina Co/sharon-Wadsworth PWS Medina County |
566 | 1 | 1 | |
|
Arcadia Village PWS Hancock County |
564 | 3 | 1 | |
|
Crestwood Hills C and R Association Richland County |
564 | 1 | 1 | |
|
Delta Village Fulton County Fulton County |
564 | 0 | 0 | |
|
Corning, Village of Perry County |
563 | 2 | 1 | |
|
Lake Sherman Village PWS Stark County |
563 | 4 | 1 | |
|
Clarksville Village PWS Clinton County |
562 | 2 | 2 | |
|
Lyons Village Fulton County |
562 | 2 | 1 | |
|
UC Health Medical Center Scis Hamilton County |
558 | 0 | 0 | |
|
Rushsylvania Village PWS Logan County |
551 | 3 | 1 | |
|
Camp Wise Geauga County |
550 | 1 | 1 | |
|
Christ the Word Church Lucas County |
550 | 0 | 0 | |
|
Longs Retreat Main System Pike County |
550 | 0 | 0 | |
|
Maple Lakes Campground Medina County |
550 | 1 | 1 | |
|
Molson Coors USA LLC Butler County |
550 | 0 | 0 | |
|
Randolph Marathon Portage County |
550 | 0 | 0 | |
|
Republic Village Seneca County |
550 | 1 | 1 | |
|
Gerbers Poultry LLC Wayne County |
546 | 0 | 0 | |
|
Bethel Township Water System PWS Miami County |
543 | 4 | 2 | |
|
Giant Eagle 179 PWS Summit County |
540 | 0 | 0 | |
|
Eldorado, Village of Preble County |
539 | 1 | 1 | |
|
North Hampton Village PWS Clark County |
538 | 2 | 2 | |
|
Spring Valley Village Greene County |
538 | 0 | 0 | |
|
Scioto Water Inc.-Sr125 Scioto County |
537 | 2 | 1 | |
|
Yankee Lake-Ballroom Trumbull County |
537 | 1 | 1 | |
|
North Fairfield Village Huron County |
534 | 1 | 1 | |
|
Usace-Berlin Lake/ Mill Creek Rec. Area Mahoning County |
527 | 1 | 1 | |
|
Christiansburg Village PWS Champaign County |
526 | 1 | 1 | |
|
Miami Co-Deer Cliff Run PWS Miami County |
526 | 2 | 0 | |
|
Aqua Ohio Mansfield System #03 Richland County |
525 | 1 | 1 | |
|
Field Middle School Portage County |
525 | 0 | 0 | |
|
Schrop Intermediate School Summit County |
525 | 0 | 0 | |
|
Carroll Village PWS Fairfield County |
524 | 1 | 1 | |
|
New Riegel Local School Seneca County |
524 | 0 | 0 | |
|
Wayne Trace High School Paulding County |
524 | 1 | 1 | |
|
Troyer Water System Geauga County |
522 | 0 | 0 | |
|
Morgan Meigsville West Malta PWS Morgan County |
520 | 1 | 1 | |
|
EB Fuel Stops Celina Mercer County |
515 | 0 | 0 | |
|
Kenston Middle School Geauga County |
515 | 0 | 0 | |
|
Manchester Middle School Summit County |
515 | 0 | 0 | |
|
Pilot Oil Co-Hebron 285 Licking County |
514 | 0 | 0 | |
|
Gettysburg Village PWS Darke County |
513 | 2 | 1 | |
|
Hale Farm Herrick Well Summit County |
508 | 0 | 0 | |
|
Harmony Estates Mobile Home Park Clark County |
507 | 0 | 0 | |
|
Oak Hills Mobile Home Park Franklin County |
505 | 2 | 1 | |
|
Bayshore Campground PWS Ashtabula County |
503 | 0 | 0 | |
|
Stockport Village PWS Morgan County |
503 | 2 | 1 | |
|
Mercy ST Rita Mc-Systems Abcdefg & K Allen County |
501 | 0 | 0 | |
|
Aurora Estates Portage County |
500 | 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 still 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. Retrieved from ECHO on Oct 11, 2026.