All water systems in Oklahoma
1,291 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Cleveland Municipal Authority Pawnee County |
3,262 | 4 | 0 | |
|
Stickross Mountain Water CO Cherokee County |
3,250 | 6 | 0 | |
|
Vance Afb Garfield County |
3,231 | 0 | 0 | |
|
Pawnee CO Rwd #1 Pawnee County |
3,200 | 1 | 0 | |
|
Chandler Lincoln County |
3,142 | 2 | 2 | |
|
Okemah Utilities Authority Okfuskee County |
3,113 | 2 | 0 | |
|
Muldrow Pwa Sequoyah County |
3,104 | 3 | 0 | |
|
Rogers CO Rwd # 7 Rogers County |
3,040 | 0 | 0 | |
|
Wilburton Latimer County |
3,025 | 1 | 0 | |
|
Atoka Co. Rws & Swmd #4 Atoka County |
3,000 | 5 | 0 | |
|
Comanche CO Rwd #4 Comanche County |
3,000 | 2 | 0 | |
|
Cotton CO Rwd #2 Cotton County |
3,000 | 1 | 0 | |
|
Haskell Co. Water Company Haskell County |
3,000 | 6 | 1 | |
|
Heavener Utility Auth Psg Le Flore County |
3,000 | 1 | 0 | |
|
Joseph Harp Corr Inst Cleveland County |
3,000 | 4 | 0 | |
|
Payne CO RW Corp #3 Payne County |
3,000 | 0 | 0 | |
|
Tishomingo Municipal Authority Johnston County |
3,000 | 7 | 0 | |
|
Atoka Atoka County |
2,988 | 3 | 0 | |
|
Blanchard McClain County |
2,966 | 1 | 0 | |
|
Sequoyah Co. Rwd #7 Sequoyah County |
2,948 | 1 | 0 | |
|
McLoud Pottawatomie County |
2,939 | 1 | 0 | |
|
Mangum PWS Greer County |
2,924 | 4 | 0 | |
|
New Cordell Utility Authority Washita County |
2,903 | 5 | 0 | |
|
Drumright Creek County |
2,876 | 2 | 1 | |
|
Cheyenne Arapaho Concho County |
2,862 | 1 | 0 | |
|
Lindsay Pwa Garvin County |
2,850 | 2 | 0 | |
|
Roland Sequoyah County |
2,842 | 1 | 0 | |
|
Watonga Blaine County |
2,816 | 4 | 1 | |
|
Calera Pwa Bryan County |
2,815 | 3 | 0 | |
|
Stroud Utilities Authority Lincoln County |
2,811 | 2 | 0 | |
|
Comanche CO Rwd #1 Comanche County |
2,800 | 3 | 1 | |
|
Grand Lake Pwa Delaware County |
2,800 | 3 | 0 | |
|
Healdton Carter County |
2,785 | 1 | 0 | |
|
Johnston CO Rwd #3 Johnston County |
2,783 | 1 | 0 | |
|
McIntosh Co. Rws & Swmd #2 (onapa) McIntosh County |
2,774 | 3 | 0 | |
|
Eufaula Pwa McIntosh County |
2,766 | 4 | 0 | |
|
Latimer Co. Rwd #1 Latimer County |
2,750 | 3 | 0 | |
|
Rogers CO Rwd # 2 Rogers County |
2,750 | 2 | 0 | |
|
Stigler Haskell County |
2,731 | 2 | 0 | |
|
Fairview Major County |
2,690 | 5 | 1 | |
|
Catoosa Rogers County |
2,668 | 1 | 0 | |
|
Jackson CO Water Corp Jackson County |
2,662 | 7 | 2 | |
|
Commerce Ottawa County |
2,645 | 7 | 1 | |
|
Marietta Pwa Love County |
2,626 | 0 | 0 | |
|
Davis Murray County |
2,610 | 6 | 0 | |
|
Hinton Caddo County |
2,600 | 5 | 1 | |
|
Adair CO Rwd #3 Adair County |
2,598 | 1 | 0 | |
|
Hominy Osage County |
2,584 | 9 | 3 | |
|
Mayes CO Rwd # 9 Mayes County |
2,578 | 6 | 2 | |
|
Perkins Payne County |
2,572 | 3 | 0 |
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 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. Retrieved from ECHO on Oct 11, 2026.