Revised Total Coliform Rule (RTCR) violations in Ohio
760 active public water systems in Ohio had a Revised Total Coliform Rule (RTCR) violation in the past three years, 236 of them in the latest quarter of EPA's data. What Revised Total Coliform Rule (RTCR) is and why it matters.
Systems with a Revised Total Coliform Rule (RTCR) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Cardington Village PWS Morrow County |
2,079 | 2 | 1 | |
|
Dalton Village PWS Wayne County |
2,000 | 2 | 1 | |
|
South Bloomfield Village PWS Pickaway County |
1,999 | 3 | 1 | |
|
Jamestown Village PWS Greene County |
1,997 | 4 | 1 | |
|
Bellville Village Richland County |
1,918 | 2 | 1 | |
|
Beverly Village PWS Washington County |
1,900 | 3 | 2 | |
|
Roseville PWS Muskingum County |
1,852 | 2 | 1 | |
|
Northern Perry Co.water #2 Perry County |
1,802 | 4 | 3 | |
|
Roaming Shores Village PWS Ashtabula County |
1,764 | 3 | 1 | |
|
Northern Perry Co.water #1 Perry County |
1,706 | 4 | 2 | |
|
Russells Point Village PWS Logan County |
1,651 | 2 | 1 | |
|
Jeffersonville Village PWS Fayette County |
1,356 | 5 | 2 | |
|
Continental Village PWS Putnam County |
1,153 | 3 | 2 | |
|
Holgate Village Henry County |
1,150 | 3 | 0 | |
|
Attica Village Seneca County |
1,148 | 6 | 0 | |
|
Clark-Shawnee Local Pk-6 School PWS Clark County |
1,120 | 1 | 0 | |
|
Rockford Village Mercer County |
1,120 | 4 | 1 | |
|
Hillsdale School Pk-12 PWS Ashland County |
1,056 | 5 | 0 | |
|
Mwcd Charles Mill Lake Park PWS Ashland County |
1,048 | 1 | 0 | |
|
Williamsport Village PWS Pickaway County |
1,038 | 3 | 0 | |
|
Kingston Village PWS Ross County |
1,032 | 5 | 4 | |
|
Yorkville Village PWS Jefferson County |
1,019 | 5 | 2 | |
|
Danville Village PWS Knox County |
994 | 2 | 1 | |
|
Travel Centers of America 11 PWS Preble County |
990 | 1 | 0 | |
|
Hopedale Village PWS Harrison County |
984 | 5 | 1 | |
|
Pilot Corporation Eaton 286 Preble County |
955 | 1 | 0 | |
|
Sardinia Village PWS Brown County |
952 | 3 | 2 | |
|
Addyston Village PWS Hamilton County |
900 | 3 | 2 | |
|
The Bell Station Geauga County |
900 | 1 | 0 | |
|
New Madison Village PWS Darke County |
892 | 4 | 3 | |
|
Coolville Village PWS Athens County |
859 | 4 | 1 | |
|
Westfall Middle Scl and High Scl PW Pickaway County |
853 | 1 | 0 | |
|
Adena Village PWS Jefferson County |
820 | 4 | 2 | |
|
Flushing Village PWS Belmont County |
803 | 5 | 1 | |
|
Claridon Mini-Mart Geauga County |
750 | 2 | 0 | |
|
Westfall Elementary School PWS Pickaway County |
750 | 2 | 1 | |
|
Yohe Plaza Stark County |
750 | 1 | 0 | |
|
Madison Plains Elementary School Madison County |
721 | 1 | 0 | |
|
Ohio City Village PWS Van Wert County |
705 | 3 | 0 | |
|
Odot-Rest Area 8-39 PWS Preble County |
700 | 1 | 0 | |
|
Jonathan Alder Pioneer High School PWS Madison County |
683 | 2 | 1 | |
|
Suburbans Community MHP Madison County |
655 | 4 | 0 | |
|
Thurston Village PWS Fairfield County |
604 | 5 | 1 | |
|
Odot Rest Area 6-21 PWS Madison County |
600 | 2 | 1 | |
|
Arcadia Village PWS Hancock County |
564 | 3 | 1 | |
|
Party Mart #77 PWS Paulding County |
500 | 1 | 0 | |
|
MT Blanchard Village Hancock County |
488 | 3 | 1 | |
|
Warren Water Authority Jefferson County |
481 | 6 | 2 | |
|
Brookside Village MHP PWS Clark County |
475 | 4 | 1 | |
|
Lakeside MHC Licking County |
465 | 5 | 1 |
About this data
A system is counted once if any of its violations in the past three years involved Revised Total Coliform Rule (RTCR), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Revised Total Coliform Rule (RTCR) 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.