All water systems in Ohio
4,165 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Belle Center Village PWS Logan County |
834 | 0 | 0 | |
|
Waynesfield Village PWS Auglaize County |
831 | 2 | 2 | |
|
New Holland Village PWS Pickaway County |
830 | 0 | 0 | |
|
Rio Grande Gallia County |
830 | 3 | 1 | |
|
Syracuse Village PWS Meigs County |
826 | 2 | 2 | |
|
Chesterhill Village PWS Morgan County |
823 | 1 | 1 | |
|
Adena Village PWS Jefferson County |
820 | 4 | 2 | |
|
Beiler's Penn Dutch Market PWS Stark County |
820 | 0 | 0 | |
|
Triway K-12 School Wayne County |
820 | 0 | 0 | |
|
Junction City Perry County |
819 | 2 | 2 | |
|
Noble Water Company Noble County |
815 | 1 | 1 | |
|
Nevada Village PWS Wyandot County |
814 | 1 | 0 | |
|
Aqua Ohio Mansfield System #01 Richland County |
813 | 1 | 1 | |
|
Cvnra Boston, DZ House, MD Garage Summit County |
813 | 0 | 0 | |
|
Sherwood Village Defiance County |
811 | 1 | 1 | |
|
Notre Dame-Cathedral Latin School Geauga County |
810 | 0 | 0 | |
|
Flushing Village PWS Belmont County |
803 | 5 | 1 | |
|
Washingtonville Village PWS Columbiana County |
801 | 3 | 2 | |
|
Aqua Ohio la Rue Village PWS Marion County |
800 | 2 | 2 | |
|
Fairway Terrace MHP PWS Clark County |
800 | 1 | 1 | |
|
Jehovah Witness Assembly Hall Madison County |
800 | 2 | 1 | |
|
Round Up, LLC Portage County |
800 | 0 | 0 | |
|
Spencer, Village of Medina County |
800 | 1 | 1 | |
|
Turn Point Apostolic Church PWS Franklin County |
800 | 0 | 0 | |
|
Walnut Creek Flea Market Exchange PWS Holmes County |
800 | 0 | 0 | |
|
Tcmsd-Baltic PWS Tuscarawas County |
795 | 1 | 1 | |
|
Franklin Monroe School New PWS Darke County |
792 | 0 | 0 | |
|
Milford Center Village PWS Union County |
792 | 0 | 0 | |
|
Southeast Elementary School PWS Portage County |
790 | 0 | 0 | |
|
Edon Village Williams County |
783 | 1 | 1 | |
|
Mississinawa Valley High Darke County |
781 | 0 | 0 | |
|
Lake Center Christian School Stark County |
775 | 0 | 0 | |
|
Waterford Water/sewer Association Washington County |
770 | 2 | 1 | |
|
Aqua Ohio Aurora E Portage County |
766 | 0 | 0 | |
|
Aqua Ohio Mansfield System #07 Richland County |
766 | 0 | 0 | |
|
Certified Oil Co-Station 410 PWS Portage County |
766 | 0 | 0 | |
|
Odot Rest Area 1-27 EB Van Wert County |
761 | 0 | 0 | |
|
Odnr Harrison Lake ST PK Fulton County |
760 | 0 | 0 | |
|
Northern Ohio Rural Water Camp Road Huron County |
758 | 0 | 0 | |
|
Amanda Village PWS Fairfield County |
757 | 2 | 1 | |
|
Marshallville Village PWS Wayne County |
756 | 3 | 2 | |
|
Aqua Ohio Seneca Williams County |
750 | 0 | 0 | |
|
Brookside Dairy & Convenience Store PWS Van Wert County |
750 | 0 | 0 | |
|
Claridon Mini-Mart Geauga County |
750 | 2 | 0 | |
|
Clays Park Resort Camping Resort Stark County |
750 | 0 | 0 | |
|
Enchanted Acres MHP Franklin County |
750 | 1 | 1 | |
|
Heart of Ohio Antique PWS Clark County |
750 | 0 | 0 | |
|
Joseph Badger Local School PWS Trumbull County |
750 | 1 | 1 | |
|
Portage County WR Cjag Portage County |
750 | 0 | 0 | |
|
Quaker City Guernsey County |
750 | 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.