All water systems in Oklahoma
1,291 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Okeene Blaine County |
1,240 | 3 | 0 | |
|
Thomas Custer County |
1,238 | 0 | 0 | |
|
Yale Payne County |
1,227 | 5 | 0 | |
|
Mooreland Woodward County |
1,226 | 4 | 0 | |
|
Garfield CO Rwd #6 Garfield County |
1,225 | 0 | 0 | |
|
Hughes Co. Rwd #1 Hughes County |
1,225 | 2 | 0 | |
|
Maysville Garvin County |
1,212 | 8 | 3 | |
|
Buffalo Harper County |
1,200 | 1 | 0 | |
|
East Central Oklahoma Water Authority Sequoyah County |
1,200 | 0 | 0 | |
|
Geronimo Comanche County |
1,200 | 3 | 0 | |
|
Panhandle State University Texas County |
1,200 | 5 | 1 | |
|
Pottawatomie CO Development Auth Pottawatomie County |
1,200 | 0 | 0 | |
|
Pushmataha Co. Rwd #1 Pushmataha County |
1,200 | 2 | 0 | |
|
Ringling Jefferson County |
1,200 | 0 | 0 | |
|
Shattuck Ellis County |
1,200 | 6 | 0 | |
|
Sperry Tulsa County |
1,200 | 1 | 0 | |
|
Goodwell Texas County |
1,198 | 1 | 1 | |
|
Medford Grant County |
1,172 | 3 | 0 | |
|
Cyril Caddo County |
1,168 | 4 | 0 | |
|
Pontotoc CO Rwd # 9 Pontotoc County |
1,162 | 3 | 2 | |
|
Murray State College Johnston County |
1,150 | 0 | 0 | |
|
Logan CO Rwd #2 Logan County |
1,146 | 1 | 1 | |
|
Temple Cotton County |
1,146 | 4 | 0 | |
|
Hughes Co. Rwd #2 Hughes County |
1,145 | 1 | 1 | |
|
Maud Pottawatomie County |
1,136 | 3 | 0 | |
|
Harmon Water Corp Harmon County |
1,132 | 3 | 1 | |
|
Grandfield Tillman County |
1,110 | 2 | 0 | |
|
Okarche Kingfisher County |
1,110 | 2 | 1 | |
|
Wagoner Co. Rwd #7 (new) Wagoner County |
1,110 | 5 | 0 | |
|
Elmore City RW Corp Garvin County |
1,107 | 1 | 0 | |
|
Stringtown Pwa Atoka County |
1,105 | 2 | 0 | |
|
Craig CO Rws & Swmd #3 Craig County |
1,100 | 3 | 0 | |
|
Laverne Harper County |
1,097 | 4 | 0 | |
|
Sequoyah Co. Rwd #5 Sequoyah County |
1,075 | 2 | 0 | |
|
Quinton Pittsburg County |
1,071 | 2 | 1 | |
|
Hydro Pwa Caddo County |
1,060 | 5 | 1 | |
|
Nowata CO Rwd #7 Nowata County |
1,050 | 6 | 5 | |
|
Oakland Pwa Marshall County |
1,050 | 4 | 2 | |
|
Meeker Public Works Authority Lincoln County |
1,044 | 3 | 0 | |
|
Frontier City Oklahoma County |
1,040 | 6 | 1 | |
|
Sequoyah Co. Rwd #3 Sequoyah County |
1,040 | 2 | 2 | |
|
Rogers CO Rwd # 9 Rogers County |
1,037 | 0 | 0 | |
|
Washita CO Rwd #2 Washita County |
1,032 | 1 | 0 | |
|
Braggs Water Works Muskogee County |
1,030 | 2 | 1 | |
|
Sequoyah State Park Lodge Cherokee County |
1,030 | 2 | 0 | |
|
Adair CO Rwd #4 Adair County |
1,025 | 1 | 1 | |
|
Fairland Public Works Authority Ottawa County |
1,025 | 2 | 0 | |
|
Erick Beckham County |
1,023 | 0 | 0 | |
|
Fletcher Comanche County |
1,022 | 3 | 1 | |
|
Hulbert Pwa Cherokee County |
1,007 | 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 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.