Chlorine (MRDL) violations in Oklahoma
293 active public water systems in Oklahoma had a Chlorine (MRDL) violation in the past three years, 36 of them in the latest quarter of EPA's data. What Chlorine (MRDL) is and why it matters.
Systems with a Chlorine (MRDL) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Hunter Garfield County |
300 | 6 | 2 | |
|
Pittsburg Co. Rwd #6 (alderson) Pittsburg County |
300 | 4 | 0 | |
|
Moss School Hughes County |
297 | 4 | 0 | |
|
Lakewood Village Delaware County |
293 | 7 | 2 | |
|
Red Rock Noble County |
293 | 6 | 1 | |
|
Westport Utility Authority Trust Pawnee County |
289 | 5 | 1 | |
|
Pittsburg Pittsburg County |
280 | 5 | 1 | |
|
Roosevelt Pwa Kiowa County |
280 | 4 | 0 | |
|
Caddo CO Rwd #1 (lookeba) Caddo County |
275 | 4 | 0 | |
|
Osage Pwa Osage County |
275 | 4 | 1 | |
|
Cherokee Co. Rwd # 16 (chicken Creek) Cherokee County |
272 | 6 | 0 | |
|
Gotebo Kiowa County |
272 | 3 | 0 | |
|
Ponca Fancy Dance Casino County |
262 | 2 | 0 | |
|
Washington CO Rwd #7 Washington County |
258 | 6 | 2 | |
|
Lee Creek Rwd Sequoyah County |
250 | 4 | 1 | |
|
Lookeba Sickles School Caddo County |
250 | 8 | 2 | |
|
Oaks Mobile Home Park Creek County |
250 | 5 | 2 | |
|
Okarche Rwd, INC Kingfisher County |
250 | 5 | 0 | |
|
Breckinridge Pwa Garfield County |
239 | 6 | 1 | |
|
Choctaw Co. Rwsg & Swmd #3 Choctaw County |
235 | 3 | 0 | |
|
Fin and Feather Resort Sequoyah County |
232 | 3 | 0 | |
|
Jet Alfalfa County |
230 | 5 | 1 | |
|
Bixby Estates Tulsa County |
225 | 5 | 2 | |
|
Mulhall Logan County |
225 | 5 | 1 | |
|
Pawnee County Rwd #5 Pawnee County |
225 | 4 | 0 | |
|
Spring Cove RV Park&marina Onlake Hudson Mayes County |
225 | 10 | 2 | |
|
Dougherty Murray County |
224 | 4 | 1 | |
|
Sasakwa Rwd Seminole County |
210 | 3 | 0 | |
|
Martha Jackson County |
205 | 5 | 0 | |
|
Cherokee Co. Rwd # 16 (lakewood) Cherokee County |
200 | 4 | 0 | |
|
Cherokee Co. Rwd # 16 (wildcat) Cherokee County |
200 | 6 | 0 | |
|
Cherokee Co. Rwd # 16 (woodhaven) Cherokee County |
200 | 6 | 0 | |
|
Cherokee Co. Rwd #9 Cherokee County |
200 | 4 | 1 | |
|
Frontier Shores Poa Water Dept Osage County |
200 | 5 | 1 | |
|
McIntosh Co. Rwd #7 McIntosh County |
200 | 3 | 2 | |
|
Roger Mills Rws & Swmd #1 Roger Mills County |
200 | 10 | 2 | |
|
Roger Mills Rws & Swmd #3 (reydon) Roger Mills County |
177 | 5 | 1 | |
|
Rogers CO Rwd #12 Rogers County |
176 | 5 | 0 | |
|
Latimer Co. Rwd #3 Latimer County |
175 | 7 | 5 | |
|
Shell Creek Rwd #12, McIntosh Co. McIntosh County |
175 | 5 | 2 | |
|
Reed Water Corp Greer County |
175 | 3 | 0 | |
|
Hickory Meadows Delaware County |
157 | 8 | 5 | |
|
Dewey CO Rwd #2 Dewey County |
150 | 5 | 0 | |
|
Garvin McCurtain County |
150 | 5 | 1 | |
|
Potters Trailer Park Beckham County |
150 | 6 | 0 | |
|
Sasakwa Pwa Seminole County |
150 | 6 | 2 | |
|
Dacoma Pwa Woods County |
148 | 6 | 1 | |
|
Slick Creek County |
148 | 3 | 0 | |
|
Hitchcock Public Works Auth. Blaine County |
141 | 4 | 2 | |
|
Ottawa CO Rwd # 3 Ottawa County |
140 | 10 | 4 |
About this data
A system is counted once if any of its violations in the past three years involved Chlorine (MRDL), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Chlorine (MRDL) 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.