All water systems in Oklahoma
1,291 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Deerfield Springs Rogers County |
445 | 5 | 2 | |
|
Helena Alfalfa County |
443 | 6 | 0 | |
|
Pontotoc CO Rwd # 1 (homer) Pontotoc County |
441 | 2 | 0 | |
|
Lone Wolf Kiowa County |
440 | 5 | 1 | |
|
Sooner Utilities Sleepy Hollow Cleveland County |
438 | 3 | 0 | |
|
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 | |
|
Spavinaw Mayes County |
432 | 0 | 0 | |
|
Gage Ellis County |
429 | 5 | 1 | |
|
Woods County Rwd # 1 Woods County |
426 | 5 | 0 | |
|
Duke Public Water Authority Jackson County |
425 | 2 | 0 | |
|
Leflore Co. Rwd #15 Le Flore County |
425 | 3 | 0 | |
|
Ringwood Major County |
424 | 1 | 1 | |
|
Wapanucka Johnston County |
420 | 0 | 0 | |
|
Cherokee Co. Rwd #7 (welling) Cherokee County |
418 | 1 | 1 | |
|
Lamont Grant County |
417 | 10 | 0 | |
|
Pawnee CO Rwd #4 Pawnee County |
415 | 0 | 0 | |
|
Cherokee Co. Rwd #8 (briggs) Cherokee County |
413 | 4 | 1 | |
|
Beaver CO Rwd #1 Turpin Beaver County |
412 | 6 | 0 | |
|
Latimer Co. Rwd #4 Latimer County |
412 | 3 | 0 | |
|
Drummond Garfield County |
405 | 1 | 1 | |
|
Lincoln CO Rwd #1 Lincoln County |
404 | 0 | 0 | |
|
Shidler Osage County |
404 | 2 | 0 | |
|
Wanette Public Works Authority Pottawatomie County |
402 | 6 | 1 | |
|
Delaware CO Rwd # 7 Delaware County |
400 | 1 | 0 | |
|
Dover Public Works Trust Auth Kingfisher County |
400 | 4 | 0 | |
|
Hillcrest MHP Oklahoma County |
400 | 1 | 0 | |
|
Jennings Pawnee County |
400 | 5 | 1 | |
|
Lincoln CO Rwd #2 Lincoln County |
400 | 1 | 0 | |
|
Optima Texas County |
400 | 8 | 4 | |
|
R&c Water Corp Grant County |
400 | 1 | 1 | |
|
Seneca-Cayuga Nation Delaware County |
400 | 10 | 3 | |
|
Tonkawa Tribe of Oklahoma County |
400 | 1 | 0 | |
|
Wagoner Co. Rwd #1 Wagoner County |
397 | 4 | 0 | |
|
Lehigh Coal County |
396 | 5 | 3 | |
|
Custer City PWS Custer County |
393 | 1 | 0 | |
|
Ironside Water District INC Craig County |
392 | 2 | 1 | |
|
Francis Pontotoc County |
390 | 2 | 0 | |
|
Prue Pwa Osage County |
387 | 2 | 0 | |
|
Seminole Co. Rwd #1 Seminole County |
387 | 2 | 0 | |
|
Terral Jefferson County |
386 | 6 | 1 | |
|
Sooner Utilities-Crosby #2 Oklahoma County |
385 | 3 | 1 | |
|
Medicine Park Comanche County |
382 | 5 | 2 | |
|
Tupelo Pwa Coal County |
377 | 1 | 0 | |
|
Ripley Pwa Payne County |
376 | 6 | 1 | |
|
Asher Util Dev Auth Pottawatomie County |
375 | 4 | 1 | |
|
Davidson Tillman County |
375 | 5 | 0 | |
|
Choctaw Co. Rwd #2 Choctaw County |
373 | 1 | 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.