Revised Total Coliform Rule (RTCR) violations in Oklahoma
514 active public water systems in Oklahoma had a Revised Total Coliform Rule (RTCR) violation in the past three years, 73 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 |
|---|---|---|---|---|
|
Ravia Johnston County |
459 | 4 | 0 | |
|
Mayes CO Rwd # 8 Mayes County |
450 | 3 | 1 | |
|
Wynona Osage County |
450 | 4 | 1 | |
|
Lone Wolf Kiowa County |
440 | 5 | 1 | |
|
Frontier Development Auth Custer County |
437 | 3 | 1 | |
|
Billings Pwa Noble County |
436 | 4 | 1 | |
|
Leedey Dewey County |
436 | 2 | 0 | |
|
North Miami Ottawa County |
433 | 7 | 3 | |
|
Gage Ellis County |
429 | 5 | 1 | |
|
Woods County Rwd # 1 Woods County |
426 | 5 | 0 | |
|
Lamont Grant County |
417 | 10 | 0 | |
|
Cherokee Co. Rwd #8 (briggs) Cherokee County |
413 | 4 | 1 | |
|
Beaver CO Rwd #1 Turpin Beaver County |
412 | 6 | 0 | |
|
Wanette Public Works Authority Pottawatomie County |
402 | 6 | 1 | |
|
Wagoner Co. Rwd #1 Wagoner County |
397 | 4 | 0 | |
|
Lehigh Coal County |
396 | 5 | 3 | |
|
Francis Pontotoc County |
390 | 2 | 0 | |
|
Terral Jefferson County |
386 | 6 | 1 | |
|
Ripley Pwa Payne County |
376 | 6 | 1 | |
|
Asher Util Dev Auth Pottawatomie County |
375 | 4 | 1 | |
|
Davidson Tillman County |
375 | 5 | 0 | |
|
Taloga Dewey County |
372 | 3 | 0 | |
|
Haworth Pwa McCurtain County |
354 | 5 | 1 | |
|
Indiahoma Public Works Authority Comanche County |
350 | 5 | 1 | |
|
Orr Family Farm Cleveland County |
350 | 1 | 0 | |
|
Osage CO Rwd #20 (hulah) Osage County |
350 | 5 | 1 | |
|
Butler Custer County |
345 | 2 | 0 | |
|
Carter Beckham County |
330 | 2 | 0 | |
|
Robin Hill School Cleveland County |
330 | 4 | 0 | |
|
Chisholm Springs Event Center Logan County |
325 | 2 | 0 | |
|
Randlett Pwa Cotton County |
320 | 6 | 1 | |
|
Keyes Utility Auth. Cimarron County |
315 | 3 | 0 | |
|
Woodward CO Rwd #1 Woodward County |
315 | 4 | 0 | |
|
Pottawatomie Co. Rwd #3 (dale Plant) Pottawatomie County |
313 | 2 | 0 | |
|
Grady CO Rwd #1 Grady County |
300 | 7 | 3 | |
|
Hallett Motor Racing Circuit Pawnee County |
300 | 2 | 0 | |
|
Hunter Garfield County |
300 | 6 | 2 | |
|
Pittsburg Co. Rwd #6 (alderson) Pittsburg County |
300 | 4 | 0 | |
|
United Methodist Canyon Camp Canadian County |
300 | 1 | 0 | |
|
Broken Horn Ranch Event Center Oklahoma County |
299 | 2 | 0 | |
|
Eleven Oaks Ranch Event Center Luther · Oklahoma County |
299 | 1 | 0 | |
|
Moss School Hughes County |
297 | 4 | 0 | |
|
Lakewood Village Delaware County |
293 | 7 | 2 | |
|
Red Rock Noble County |
293 | 6 | 1 | |
|
Westport Utility Authority Trust Pawnee County |
289 | 5 | 1 | |
|
Jones State Central Middle School Oklahoma County |
280 | 5 | 2 | |
|
Pittsburg Pittsburg County |
280 | 5 | 1 | |
|
Caddo CO Rwd #1 (lookeba) Caddo County |
275 | 4 | 0 | |
|
Cherokee Co. Rwd # 16 (chicken Creek) Cherokee County |
272 | 6 | 0 | |
|
Gotebo Kiowa County |
272 | 3 | 0 |
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 Oklahoma 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.