All water systems in Oklahoma
1,291 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Walters Public Works Authority Cotton County |
2,551 | 2 | 1 | |
|
Muskogee Co. Rwd #6 Muskogee County |
2,550 | 2 | 0 | |
|
Antlers Pwa Pushmataha County |
2,547 | 1 | 0 | |
|
Lincoln CO RW & Sewer Dist 4 Lincoln County |
2,525 | 3 | 0 | |
|
51 East Water Payne County |
2,500 | 0 | 0 | |
|
Bowlegs Lima Water Seminole County |
2,500 | 5 | 0 | |
|
Creek CO Rwd # 5 Creek County |
2,500 | 1 | 1 | |
|
Oklahoma City Zoo Oklahoma County |
2,500 | 5 | 0 | |
|
Jay Delaware County |
2,482 | 4 | 1 | |
|
Water Improvement District #3 Tulsa County |
2,475 | 2 | 0 | |
|
Camp Gruber / OK Military Dept Muskogee County |
2,469 | 0 | 0 | |
|
Grady CO Rwd #7 (ninnekah) Grady County |
2,425 | 4 | 1 | |
|
Mayes CO Rwd # 3 Mayes County |
2,400 | 5 | 1 | |
|
Porter Pwa Wagoner County |
2,400 | 4 | 0 | |
|
Prague Lincoln County |
2,395 | 7 | 1 | |
|
Okmulgee Co. Rwd #20 Okmulgee County |
2,377 | 0 | 0 | |
|
Cache Comanche County |
2,371 | 0 | 0 | |
|
Okmulgee Co. Rwd #7 (nuyaka) Okmulgee County |
2,357 | 3 | 1 | |
|
Okmulgee Co. Rwd #2 (preston) Okmulgee County |
2,355 | 5 | 0 | |
|
Comanche CO Rwd #3 Comanche County |
2,325 | 0 | 0 | |
|
Colbert Pua Bryan County |
2,312 | 5 | 0 | |
|
Wynnewood Water & Light Garvin County |
2,307 | 4 | 1 | |
|
Cherokee Co. Rwd #3 (grandview) Cherokee County |
2,300 | 0 | 0 | |
|
Choctaw Co. Rwd #1 Choctaw County |
2,300 | 4 | 0 | |
|
Hartshorne Pittsburg County |
2,300 | 1 | 0 | |
|
Muskogee Co. Rwd #1 (oktaha) Muskogee County |
2,280 | 1 | 0 | |
|
Hollis Harmon County |
2,264 | 3 | 1 | |
|
Okfuskee Co. Rwd #2 Okfuskee County |
2,250 | 1 | 0 | |
|
Washington CO Rwd #2 Washington County |
2,250 | 1 | 1 | |
|
Newkirk Kay County |
2,243 | 1 | 0 | |
|
Pawnee Pawnee County |
2,230 | 9 | 1 | |
|
Pittsburg Co. Pwa (crowder) Pittsburg County |
2,203 | 4 | 0 | |
|
Spiro Le Flore County |
2,200 | 2 | 0 | |
|
Arkoma Le Flore County |
2,180 | 2 | 0 | |
|
Hughes Co. Rwd #6 (gerty) Hughes County |
2,180 | 1 | 0 | |
|
Chouteau Mayes County |
2,100 | 3 | 0 | |
|
Creek CO Rwd # 7 Creek County |
2,100 | 5 | 1 | |
|
Noble County Rwd #2 Noble County |
2,100 | 0 | 0 | |
|
Tinker Afb Family Housing Oklahoma County |
2,100 | 2 | 0 | |
|
Waurika Public Works Authority Jefferson County |
2,100 | 5 | 2 | |
|
Kickapoo New Gaming Enterprise County |
2,097 | 0 | 0 | |
|
Lexington Cleveland County |
2,086 | 3 | 1 | |
|
Hennessey Kingfisher County |
2,058 | 0 | 0 | |
|
Burns Flat PWS Washita County |
2,057 | 2 | 0 | |
|
Krebs Utility Authority Pittsburg County |
2,051 | 3 | 0 | |
|
Pittsburg Co. Rwd #7 (arpelar) Pittsburg County |
2,040 | 2 | 0 | |
|
Warner Muskogee County |
2,020 | 3 | 1 | |
|
Coalgate Pwa Coal County |
2,005 | 6 | 0 | |
|
Adair CO Rwd #1 (cherry Tree) Adair County |
2,000 | 1 | 0 | |
|
Goldsby Water Auth Trust McClain County |
2,000 | 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 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.