All water systems in Ohio
4,165 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Sims and Murry Marathon PWS Clark County |
750 | 1 | 1 | |
|
Westfall Elementary School PWS Pickaway County |
750 | 2 | 1 | |
|
Yohe Plaza Stark County |
750 | 1 | 0 | |
|
Greene County Fairborn Greene County |
743 | 2 | 0 | |
|
Trumbull Co. Warren Twp PWS Trumbull County |
740 | 1 | 1 | |
|
Eastwood Elementary School PWS Wood County |
737 | 1 | 0 | |
|
Graham High School Champaign County |
735 | 1 | 1 | |
|
Perrysville Village Ashland County |
735 | 2 | 0 | |
|
Licking County Prescott Estates Licking County |
732 | 1 | 1 | |
|
Circle K 5685 Geauga County |
730 | 0 | 0 | |
|
Green Meadows Mobile Home Park Madison County |
730 | 1 | 1 | |
|
Oakwood Village PWS Paulding County |
727 | 3 | 1 | |
|
Aqua Ohio Shepard Hills PWS Summit County |
725 | 1 | 1 | |
|
Tolles Technical Center Madison County |
723 | 0 | 0 | |
|
Cincinnati Childrens Med Center Col Hill Hamilton County |
722 | 0 | 0 | |
|
Madison Plains Elementary School Madison County |
721 | 1 | 0 | |
|
Bath Elementary School 2 PWS Summit County |
720 | 0 | 0 | |
|
Aqua Ohio Tomahawk Utilities Columbiana County |
715 | 1 | 1 | |
|
Six Nineteen Marathon Summit County |
715 | 0 | 0 | |
|
Huntsville Marastop PWS Logan County |
712 | 0 | 0 | |
|
McGuffey Village PWS Hardin County |
710 | 2 | 0 | |
|
Ohio City Village PWS Van Wert County |
705 | 3 | 0 | |
|
Kettering Health Miamisburg Montgomery County |
702 | 1 | 0 | |
|
Leaders MHP PWS Geauga County |
700 | 1 | 1 | |
|
Morgan Meigsville Rural Morgan County |
700 | 0 | 0 | |
|
Odot-Rest Area 8-39 PWS Preble County |
700 | 1 | 0 | |
|
Pike's Peak Campground Guernsey County |
700 | 1 | 1 | |
|
Rogers Community Auction Columbiana County |
700 | 0 | 0 | |
|
West Mansfield Village PWS Logan County |
700 | 1 | 0 | |
|
Ben Logan Elementary School Logan County |
697 | 0 | 0 | |
|
Bettsville Village Seneca County |
692 | 2 | 1 | |
|
Scio PWS Harrison County |
690 | 2 | 1 | |
|
Jonathan Alder Pioneer High School PWS Madison County |
683 | 2 | 1 | |
|
Bristol Local School Trumbull County |
682 | 0 | 0 | |
|
Madison South Elementary Richland County |
675 | 0 | 0 | |
|
Racine Village PWS Meigs County |
675 | 3 | 2 | |
|
Triad Middle School Champaign County |
675 | 3 | 0 | |
|
Ben Logan Middle School Logan County |
671 | 0 | 0 | |
|
Malta Village PWS Morgan County |
671 | 3 | 2 | |
|
Rock Creek Village Ashtabula County |
667 | 5 | 0 | |
|
Birchwood Manor MHC Old Portage County |
665 | 0 | 0 | |
|
Dillonvale Jefferson County |
665 | 2 | 1 | |
|
Coalton Jackson County |
663 | 4 | 2 | |
|
Aqua Ohio Auburn Lakes PWS Geauga County |
658 | 1 | 1 | |
|
Suburbans Community MHP Madison County |
655 | 4 | 0 | |
|
New Straitsville, Village of Perry County |
652 | 1 | 1 | |
|
Chardon Woods of Journey Geauga County |
650 | 1 | 0 | |
|
Fairbanks Middle and High School Union County |
650 | 0 | 0 | |
|
Fairlawn K-12 School Shelby County |
650 | 0 | 0 | |
|
Jewett Village Harrison County |
650 | 2 | 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.