Interim Enhanced Surface Water Treatment Rule violations in Ohio
14 active public water systems in Ohio had a Interim Enhanced Surface Water Treatment Rule violation in the past three years. What Interim Enhanced Surface Water Treatment Rule is and why it matters.
Systems with a Interim Enhanced Surface Water Treatment Rule violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Mansfield City Richland County |
51,000 | 4 | 1 | |
|
Steubenville, City of Jefferson County |
17,000 | 2 | 1 | |
|
East Liverpool City Columbiana County |
12,586 | 2 | 0 | |
|
Van Wert City Van Wert County |
10,846 | 4 | 0 | |
|
Oberlin Water Department Lorain County |
8,600 | 2 | 1 | |
|
Bellevue City Huron County |
8,236 | 2 | 1 | |
|
Sebring Village PWS Mahoning County |
6,058 | 3 | 1 | |
|
St. Clairsville, City of PWS Belmont County |
5,097 | 5 | 1 | |
|
Wellington Village PWS Lorain County |
4,802 | 3 | 1 | |
|
Cadiz Village PWS Harrison County |
3,353 | 6 | 0 | |
|
Campbell Soup Supply CO Henry County |
1,300 | 5 | 0 | |
|
Attica Village Seneca County |
1,148 | 6 | 0 | |
|
Marblehead Village Ottawa County |
865 | 4 | 1 | |
|
Camp Patmos Erie County |
150 | 3 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Interim Enhanced Surface Water Treatment Rule, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Interim Enhanced Surface Water Treatment Rule alone.
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.