Total Haloacetic Acids (HAA5) violations in Oklahoma
282 active public water systems in Oklahoma had a Total Haloacetic Acids (HAA5) violation in the past three years, 68 of them in the latest quarter of EPA's data. What Total Haloacetic Acids (HAA5) is and why it matters.
Systems with a Total Haloacetic Acids (HAA5) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
McIntosh Co. Rws & Swmd #2 (onapa) McIntosh County |
2,774 | 3 | 0 | |
|
Latimer Co. Rwd #1 Latimer County |
2,750 | 3 | 0 | |
|
Fairview Major County |
2,690 | 5 | 1 | |
|
Commerce Ottawa County |
2,645 | 7 | 1 | |
|
Muskogee Co. Rwd #6 Muskogee County |
2,550 | 2 | 0 | |
|
Antlers Pwa Pushmataha County |
2,547 | 1 | 0 | |
|
Water Improvement District #3 Tulsa County |
2,475 | 2 | 0 | |
|
Mayes CO Rwd # 3 Mayes County |
2,400 | 5 | 1 | |
|
Porter Pwa Wagoner County |
2,400 | 4 | 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 | |
|
Arkoma Le Flore County |
2,180 | 2 | 0 | |
|
Adair CO Rwd #1 (cherry Tree) Adair County |
2,000 | 1 | 0 | |
|
Leflore Co. Consolidated Rwd #12 Le Flore County |
1,800 | 3 | 0 | |
|
Hooker Texas County |
1,788 | 5 | 1 | |
|
Pawnee CO Rwd #2 Pawnee County |
1,775 | 2 | 0 | |
|
Pittsburg Co. Rwd #5 Pittsburg County |
1,750 | 2 | 0 | |
|
Pittsburg Co. Rwd #14 Pittsburg County |
1,680 | 4 | 0 | |
|
Leflore Co. Rwd #3 Le Flore County |
1,643 | 5 | 1 | |
|
Cherokee Alfalfa County |
1,630 | 2 | 0 | |
|
Locust Grove Pwa Mayes County |
1,600 | 5 | 0 | |
|
Beckham CO Rwd # 1 Beckham County |
1,595 | 2 | 0 | |
|
Osage CO Rwd #21 Osage County |
1,500 | 9 | 4 | |
|
South Delaware CO Regional Water Auth. Delaware County |
1,500 | 5 | 0 | |
|
Konawa Pwa Seminole County |
1,479 | 5 | 1 | |
|
Oilton Creek County |
1,435 | 14 | 5 | |
|
Tulsa CO W Imp Dist #14 Tulsa County |
1,400 | 4 | 0 | |
|
Washington CO Rwd #1 Washington County |
1,375 | 2 | 0 | |
|
Buffalo Harper County |
1,200 | 1 | 0 | |
|
Panhandle State University Texas County |
1,200 | 5 | 1 | |
|
Pushmataha Co. Rwd #1 Pushmataha County |
1,200 | 2 | 0 | |
|
Shattuck Ellis County |
1,200 | 6 | 0 | |
|
Laverne Harper County |
1,097 | 4 | 0 | |
|
Sequoyah Co. Rwd #5 Sequoyah County |
1,075 | 2 | 0 | |
|
Meeker Public Works Authority Lincoln County |
1,044 | 3 | 0 | |
|
Fletcher Comanche County |
1,022 | 3 | 1 | |
|
Major County Rwd #1 Major County |
1,000 | 6 | 1 | |
|
Muskogee Co. Rwd #2 (gooseneck) Muskogee County |
1,000 | 1 | 0 | |
|
Oklahoma State Reformatory Greer County |
999 | 5 | 1 | |
|
Pond Creek Grant County |
982 | 3 | 1 | |
|
Boswell Public Works Authority Choctaw County |
932 | 3 | 0 | |
|
Davenport Utility Auth Lincoln County |
881 | 2 | 1 | |
|
Tyrone Texas County |
880 | 4 | 0 | |
|
West Siloam Springs Delaware County |
877 | 6 | 0 | |
|
Garvin CO Rwd #6 (sw Purchase) Garvin County |
862 | 1 | 0 | |
|
Tenkiller Waterworks, Inc. Cherokee County |
860 | 5 | 1 | |
|
Welch Pwa Craig County |
800 | 5 | 0 | |
|
Wright City Pwa McCurtain County |
792 | 3 | 0 | |
|
Cheyenne Roger Mills County |
778 | 4 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Total Haloacetic Acids (HAA5), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Total Haloacetic Acids (HAA5) 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.