All water systems in Oklahoma
1,291 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Beckham CO Rwd # 2 Beckham County |
857 | 6 | 1 | |
|
Sooner Utilities-Valley Brook Oklahoma County |
853 | 2 | 1 | |
|
Choctaw Co. Rwsg & Swmd #6 Choctaw County |
850 | 5 | 3 | |
|
International Paper McCurtain County |
848 | 4 | 0 | |
|
Absentee Shawnee Little Axe South Casino County |
825 | 1 | 1 | |
|
Howard McLeod Correctional Center Atoka County |
825 | 3 | 0 | |
|
Wellston Lincoln County |
825 | 3 | 0 | |
|
Bryan Co. Rwd #9 Bryan County |
820 | 3 | 0 | |
|
Payne CO Rwd #4 Payne County |
820 | 3 | 2 | |
|
Colcord Pwa Delaware County |
819 | 4 | 0 | |
|
Kansas Public Works Authority Delaware County |
802 | 1 | 0 | |
|
Bridge Creek School Grady County |
800 | 3 | 0 | |
|
Hughes Co. Rwd #5 Hughes County |
800 | 1 | 0 | |
|
Roff Pontotoc County |
800 | 3 | 1 | |
|
Roger Mills Rwd # 2 (red Star) Roger Mills County |
800 | 5 | 0 | |
|
Ryan Utilities Authority Jefferson County |
800 | 2 | 1 | |
|
Savanna Pittsburg County |
800 | 5 | 2 | |
|
Welch Pwa Craig County |
800 | 5 | 0 | |
|
Eastern Shawnee County |
796 | 0 | 0 | |
|
Wright City Pwa McCurtain County |
792 | 3 | 0 | |
|
Pittsburg Co. Rwd #11 (kiowa) Pittsburg County |
790 | 3 | 0 | |
|
South Coffeyville Nowata County |
790 | 2 | 0 | |
|
Delaware CO Rwd # 12 Delaware County |
785 | 2 | 0 | |
|
Muskogee Co. Rwd #4 Muskogee County |
783 | 1 | 0 | |
|
Cheyenne Roger Mills County |
778 | 4 | 0 | |
|
Okay Pwa Wagoner County |
767 | 2 | 1 | |
|
Kay CO Rwd #5 (dale Water Corp) Kay County |
765 | 4 | 1 | |
|
Sterling Pwa Comanche County |
762 | 2 | 0 | |
|
Elmore City Garvin County |
756 | 0 | 0 | |
|
Dewey CO Rwd #3 Woodward County |
755 | 4 | 2 | |
|
McCurtain Co. Rwd #2 McCurtain County |
755 | 3 | 0 | |
|
Canadian CO Rwd # 1 Canadian County |
750 | 3 | 0 | |
|
Delaware CO Rwsg&swm District 11 Delaware County |
750 | 3 | 1 | |
|
LE Ann Water Washington County |
750 | 5 | 2 | |
|
Okmulgee Co. Rwd #5 (bryant) Okmulgee County |
750 | 1 | 0 | |
|
Ottawa CO Rwd #5 Ottawa County |
750 | 7 | 0 | |
|
Arapaho Custer County |
748 | 3 | 0 | |
|
Copan Pwa Washington County |
733 | 12 | 3 | |
|
Kiowa Pittsburg County |
731 | 5 | 0 | |
|
Garber Municipal Authority Garfield County |
725 | 0 | 0 | |
|
Pushmataha Co. Rwd #5 (nashoba) Pushmataha County |
725 | 4 | 0 | |
|
Clayton Pwa Pushmataha County |
719 | 1 | 0 | |
|
Cherokee Co. Rwd #1 (ft Gibson) Cherokee County |
710 | 2 | 1 | |
|
Binger Pwa Caddo County |
708 | 4 | 0 | |
|
Adair Mayes County |
704 | 2 | 1 | |
|
Osage CO Rws & Swd #3 (braden) Osage County |
700 | 2 | 0 | |
|
Ottawa CO Rwd # 2 Ottawa County |
700 | 3 | 0 | |
|
Thunder Valley Raceway Park Cleveland County |
700 | 2 | 0 | |
|
Wayne McClain County |
688 | 0 | 0 | |
|
Pawnee CO Rwd #3 Pawnee County |
685 | 0 | 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 currently 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.