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 |
|---|---|---|---|---|
|
Mangum PWS Greer County |
2,924 | 4 | 0 | |
|
New Cordell Utility Authority Washita County |
2,903 | 5 | 0 | |
|
Calera Pwa Bryan County |
2,815 | 3 | 0 | |
|
Comanche CO Rwd #1 Comanche County |
2,800 | 3 | 1 | |
|
Jackson CO Water Corp Jackson County |
2,662 | 7 | 2 | |
|
Hominy Osage County |
2,584 | 9 | 3 | |
|
Mayes CO Rwd # 9 Mayes County |
2,578 | 6 | 2 | |
|
Bowlegs Lima Water Seminole County |
2,500 | 5 | 0 | |
|
Grady CO Rwd #7 (ninnekah) Grady County |
2,425 | 4 | 1 | |
|
Porter Pwa Wagoner County |
2,400 | 4 | 0 | |
|
Prague Lincoln County |
2,395 | 7 | 1 | |
|
Colbert Pua Bryan County |
2,312 | 5 | 0 | |
|
Wynnewood Water & Light Garvin County |
2,307 | 4 | 1 | |
|
Choctaw Co. Rwd #1 Choctaw County |
2,300 | 4 | 0 | |
|
Pawnee Pawnee County |
2,230 | 9 | 1 | |
|
Chouteau Mayes County |
2,100 | 3 | 0 | |
|
Wagoner Co. Rwd #2 Wagoner County |
2,000 | 10 | 0 | |
|
McClain CO Rwd # 8 McClain County |
1,897 | 3 | 1 | |
|
US Army Ammunition Plant Pittsburg County |
1,872 | 2 | 0 | |
|
Spiro East Water Association Le Flore County |
1,817 | 5 | 1 | |
|
Leflore Co. Consolidated Rwd #12 Le Flore County |
1,800 | 3 | 0 | |
|
Sequoyah Co. Rwd #4 Sequoyah County |
1,750 | 2 | 0 | |
|
Pittsburg Co. Rwd #14 Pittsburg County |
1,680 | 4 | 0 | |
|
Adair CO Rwd #2 Adair County |
1,675 | 2 | 0 | |
|
Langston Pwa Logan County |
1,670 | 6 | 1 | |
|
Inola Water Works INC Rogers County |
1,589 | 4 | 1 | |
|
Stratford Garvin County |
1,575 | 2 | 0 | |
|
Apache Caddo County |
1,521 | 4 | 0 | |
|
Snyder Public Works Authority Kiowa County |
1,509 | 7 | 2 | |
|
Tillman CO Rwd #1 Tillman County |
1,500 | 5 | 1 | |
|
Wagoner Co. Rwd #6 Wagoner County |
1,500 | 5 | 0 | |
|
Oilton Creek County |
1,435 | 14 | 5 | |
|
Tulsa CO W Imp Dist #14 Tulsa County |
1,400 | 4 | 0 | |
|
Beggs Public Works Authority Okmulgee County |
1,364 | 6 | 1 | |
|
Choctaw RD Baptist Church Choctaw · Oklahoma County |
1,300 | 1 | 0 | |
|
Geary Blaine County |
1,258 | 8 | 1 | |
|
Barnsdall Osage County |
1,243 | 7 | 1 | |
|
Okeene Blaine County |
1,240 | 3 | 0 | |
|
Yale Payne County |
1,227 | 5 | 0 | |
|
Geronimo Comanche County |
1,200 | 3 | 0 | |
|
Panhandle State University Texas County |
1,200 | 5 | 1 | |
|
Shattuck Ellis County |
1,200 | 6 | 0 | |
|
Cyril Caddo County |
1,168 | 4 | 0 | |
|
Maud Pottawatomie County |
1,136 | 3 | 0 | |
|
Craig CO Rws & Swmd #3 Craig County |
1,100 | 3 | 0 | |
|
Laverne Harper County |
1,097 | 4 | 0 | |
|
Oakland Pwa Marshall County |
1,050 | 4 | 2 | |
|
Meeker Public Works Authority Lincoln County |
1,044 | 3 | 0 | |
|
Frontier City Oklahoma County |
1,040 | 6 | 1 | |
|
Major County Rwd #1 Major County |
1,000 | 6 | 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 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.