Surface Water Treatment Rule (SWTR) violations in Oklahoma
41 active public water systems in Oklahoma had a Surface Water Treatment Rule (SWTR) violation in the past three years, 4 of them in the latest quarter of EPA's data. What Surface Water Treatment Rule (SWTR) is and why it matters.
Systems with a Surface Water Treatment Rule (SWTR) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Avant Utilities Authority Osage County |
361 | 4 | 1 | |
|
Fin and Feather Resort Sequoyah County |
232 | 3 | 0 | |
|
Mongolds Water System Cherokee County |
74 | 1 | 0 | |
|
Canoe Mountain Water System Cherokee County |
37 | 12 | 2 | |
|
Lawton Comanche County |
92,757 | 2 | 0 | |
|
Wagoner Co. Rwd #4 Wagoner County |
37,658 | 4 | 0 | |
|
Altus Jackson County |
18,717 | 5 | 0 | |
|
McAlester Pwa Pittsburg County |
18,206 | 5 | 0 | |
|
Okmulgee Pwa Okmulgee County |
13,495 | 6 | 0 | |
|
Coweta Pwa Wagoner County |
9,450 | 11 | 1 | |
|
Clinton Custer County |
8,883 | 8 | 1 | |
|
Grove Municipal Services Auth. Delaware County |
7,311 | 4 | 1 | |
|
Bryan Co. Rws & Swmd #2 Bryan County |
6,270 | 4 | 0 | |
|
Pauls Valley Garvin County |
6,256 | 3 | 0 | |
|
Hugo Municipal Authority Choctaw County |
5,536 | 4 | 0 | |
|
Holdenville Hughes County |
4,732 | 7 | 1 | |
|
Wagoner Co. Rwd #9 Wagoner County |
4,363 | 5 | 0 | |
|
McIntosh Co. Rwd #8 (texanna) McIntosh County |
3,574 | 2 | 0 | |
|
Wewoka Public Works Authority Seminole County |
3,450 | 7 | 1 | |
|
Tishomingo Municipal Authority Johnston County |
3,000 | 7 | 0 | |
|
Atoka Atoka County |
2,988 | 3 | 0 | |
|
Davis Murray County |
2,610 | 6 | 0 | |
|
Hominy Osage County |
2,584 | 9 | 3 | |
|
Pawnee Pawnee County |
2,230 | 9 | 1 | |
|
Coalgate Pwa Coal County |
2,005 | 6 | 0 | |
|
Wagoner Co. Rwd #2 Wagoner County |
2,000 | 10 | 0 | |
|
Langston Pwa Logan County |
1,670 | 6 | 1 | |
|
South Delaware CO Regional Water Auth. Delaware County |
1,500 | 5 | 0 | |
|
Barnsdall Osage County |
1,243 | 7 | 1 | |
|
Maysville Garvin County |
1,212 | 8 | 3 | |
|
Wagoner Co. Rwd #7 (new) Wagoner County |
1,110 | 5 | 0 | |
|
Langley Mayes County |
950 | 1 | 0 | |
|
International Paper McCurtain County |
848 | 4 | 0 | |
|
Copan Pwa Washington County |
733 | 12 | 3 | |
|
Kiowa Pittsburg County |
731 | 5 | 0 | |
|
Red Oak Pwa Latimer County |
581 | 5 | 0 | |
|
Sardis Lake Water Authority Pushmataha County |
307 | 4 | 0 | |
|
Red Rock Noble County |
293 | 6 | 1 | |
|
Pittsburg Pittsburg County |
280 | 5 | 1 | |
|
Mulhall Logan County |
225 | 5 | 1 | |
|
Lazy E Training Center Logan County |
30 | 6 | 1 |
About this data
A system is counted once if any of its violations in the past three years involved Surface Water Treatment Rule (SWTR), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Surface Water Treatment Rule (SWTR) alone.
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.