All water systems in Oklahoma
1,291 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Kaw City Water Authority Kay County |
372 | 1 | 0 | |
|
Taloga Dewey County |
372 | 3 | 0 | |
|
Barnes School Oklahoma County |
371 | 1 | 0 | |
|
Coal CO Rwd #5 Coal County |
366 | 1 | 0 | |
|
Longdale Blaine County |
363 | 0 | 0 | |
|
Avant Utilities Authority Osage County |
361 | 4 | 1 | |
|
Clarita-Olney Rwd Coal County |
360 | 2 | 0 | |
|
Ponca Tribe of Oklahoma County |
360 | 1 | 1 | |
|
Clinton-Sherman Industrial Airpark Washita County |
358 | 5 | 0 | |
|
Woods County Rwd # 3 Woods County |
356 | 1 | 0 | |
|
Carmen Public Works Authority Alfalfa County |
355 | 11 | 3 | |
|
Haworth Pwa McCurtain County |
354 | 5 | 1 | |
|
Blue Quail Estates Canadian County |
350 | 2 | 0 | |
|
Falconhead Prop Owners Assoc Love County |
350 | 0 | 0 | |
|
Indiahoma Public Works Authority Comanche County |
350 | 5 | 1 | |
|
Orr Family Farm Cleveland County |
350 | 1 | 0 | |
|
Osage CO Rwd #20 (hulah) Osage County |
350 | 5 | 1 | |
|
United Pentecostal Church Okla. Dist. Canadian County |
350 | 1 | 0 | |
|
Whispering Oaks Logan County |
350 | 1 | 0 | |
|
Butler Custer County |
345 | 2 | 0 | |
|
Wakita Grant County |
344 | 1 | 0 | |
|
Seminole Co. Rw&swmd #3 Seminole County |
337 | 2 | 0 | |
|
Gracemont Pwa Caddo County |
336 | 2 | 0 | |
|
Noble CO Rwd #1 (lucien) Noble County |
335 | 0 | 0 | |
|
Ralston Pawnee County |
335 | 3 | 0 | |
|
Garfield CO Rwd # 4 Garfield County |
334 | 2 | 2 | |
|
Carter Beckham County |
330 | 2 | 0 | |
|
Robin Hill School Cleveland County |
330 | 4 | 0 | |
|
Fort Supply Pwa Woodward County |
328 | 2 | 0 | |
|
Cleo Springs Major County |
326 | 3 | 0 | |
|
Fargo Ellis County |
326 | 7 | 1 | |
|
Chisholm Springs Event Center Logan County |
325 | 2 | 0 | |
|
Marland Noble County |
325 | 1 | 0 | |
|
Kremlin-Hillsdale Rural Water District 1 Garfield County |
320 | 4 | 0 | |
|
Randlett Pwa Cotton County |
320 | 6 | 1 | |
|
Duke Central Vue Water Jackson County |
318 | 1 | 0 | |
|
Nicoma Park Oklahoma County |
318 | 4 | 0 | |
|
Milburn Public Works Authority Johnston County |
317 | 0 | 0 | |
|
Canadian CO Rws & Swmd #5 Canadian County |
316 | 1 | 0 | |
|
Watts Adair County |
316 | 0 | 0 | |
|
Cedar Crest Country Club Mayes County |
315 | 0 | 0 | |
|
Craig CO Rwd #1 Craig County |
315 | 4 | 1 | |
|
Keyes Utility Auth. Cimarron County |
315 | 3 | 0 | |
|
Seminole Co. Rwd #2 Seminole County |
315 | 2 | 0 | |
|
Woodward CO Rwd #1 Woodward County |
315 | 4 | 0 | |
|
Pottawatomie Co. Rwd #3 (dale Plant) Pottawatomie County |
313 | 2 | 0 | |
|
Mill Creek Johnston County |
310 | 4 | 1 | |
|
Sardis Lake Water Authority Pushmataha County |
307 | 4 | 0 | |
|
Bryan Co. Rwd #7 Bryan County |
302 | 0 | 0 | |
|
Cameron Pwa Le Flore County |
302 | 2 | 1 |
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.