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 |
|---|---|---|---|---|
|
Boynton Pwa Muskogee County |
450 | 4 | 2 | |
|
Nowata CO Rwd #6 Nowata County |
450 | 4 | 3 | |
|
Eldorado Jackson County |
446 | 2 | 1 | |
|
Wanette Public Works Authority Pottawatomie County |
402 | 6 | 1 | |
|
Asher Util Dev Auth Pottawatomie County |
375 | 4 | 1 | |
|
Avant Utilities Authority Osage County |
361 | 4 | 1 | |
|
Sardis Lake Water Authority Pushmataha County |
307 | 4 | 0 | |
|
Muskogee Co. Rwd #9 Muskogee County |
300 | 3 | 2 | |
|
Pittsburg Pittsburg County |
280 | 5 | 1 | |
|
Nowata CO Rwd #2 Nowata County |
205 | 4 | 3 | |
|
Red Bird Pwa Wagoner County |
153 | 4 | 1 | |
|
Lone Chimney Water Association Pawnee County |
150 | 1 | 0 | |
|
Tullahassee Water Wagoner County |
106 | 4 | 4 | |
|
Grayhorse Rwd Osage County |
100 | 2 | 1 | |
|
Muskogee Co. Rwd #14 Muskogee County |
60 | 5 | 4 | |
|
Oklahoma Academy Cafe Oklahoma County |
60 | 4 | 0 | |
|
Pittsburg Co. Rwd #20 (carlton Landing) Pittsburg County |
38 | 2 | 1 | |
|
Canoe Mountain Water System Cherokee County |
37 | 12 | 2 | |
|
Lawton Comanche County |
92,757 | 2 | 0 | |
|
Enid Garfield County |
49,347 | 3 | 0 | |
|
Sand Springs Tulsa County |
28,774 | 1 | 0 | |
|
Ponca City Mun Water Kay County |
27,155 | 1 | 0 | |
|
Tinker Air Force Base Oklahoma County |
24,645 | 4 | 1 | |
|
Bethany Oklahoma County |
20,307 | 4 | 0 | |
|
Jenks Pwa Tulsa County |
16,924 | 1 | 0 | |
|
Durant Utilities Authority Bryan County |
15,545 | 1 | 0 | |
|
Miami Ottawa County |
13,704 | 1 | 0 | |
|
Weatherford Custer County |
10,833 | 5 | 1 | |
|
Guthrie Logan County |
9,925 | 3 | 0 | |
|
Coweta Pwa Wagoner County |
9,450 | 11 | 1 | |
|
Clinton Custer County |
8,883 | 8 | 1 | |
|
Okmulgee Co. Rwd #6 (hectorville) Okmulgee County |
8,370 | 1 | 0 | |
|
Poteau Pwa Le Flore County |
7,939 | 3 | 0 | |
|
Purcell McClain County |
6,693 | 1 | 0 | |
|
Hugo Municipal Authority Choctaw County |
5,536 | 4 | 0 | |
|
Longtown Rw&sd #1 (pittsburg Co.) Pittsburg County |
5,444 | 2 | 0 | |
|
Perry Water & Light Dept Noble County |
5,230 | 8 | 1 | |
|
Alva Woods County |
5,208 | 5 | 1 | |
|
Kingfisher Kingfisher County |
5,073 | 3 | 0 | |
|
Muskogee Co. Rwd #5 Muskogee County |
4,135 | 1 | 1 | |
|
Nichols Hills Oklahoma County |
4,020 | 5 | 0 | |
|
Grady CO Rwd #6 Grady County |
3,930 | 11 | 0 | |
|
Leflore Co. Rwd #18 Le Flore County |
3,870 | 4 | 0 | |
|
Spencer Oklahoma County |
3,746 | 5 | 1 | |
|
Bristow Municipal Authority Creek County |
3,700 | 6 | 1 | |
|
Mayes CO Rwd # 5 Mayes County |
3,360 | 1 | 0 | |
|
Tonkawa Kay County |
3,299 | 5 | 1 | |
|
Cleveland Municipal Authority Pawnee County |
3,262 | 4 | 0 | |
|
Atoka Co. Rws & Swmd #4 Atoka County |
3,000 | 5 | 0 | |
|
Heavener Utility Auth Psg Le Flore County |
3,000 | 1 | 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.