Arsenic violations in Oklahoma
40 active public water systems in Oklahoma had a Arsenic violation in the past three years. What Arsenic is and why it matters.
Systems with a Arsenic violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Moore Public Works Authority Cleveland County |
55,083 | 4 | 0 | |
|
Mustang, City of Canadian County |
18,576 | 5 | 2 | |
|
Guymon Texas County |
11,442 | 2 | 0 | |
|
Weatherford Custer County |
10,833 | 5 | 1 | |
|
Grady CO Rwd #6 Grady County |
3,930 | 11 | 0 | |
|
Bristow Municipal Authority Creek County |
3,700 | 6 | 1 | |
|
Elgin Pwa Comanche County |
3,300 | 9 | 1 | |
|
Commerce Ottawa County |
2,645 | 7 | 1 | |
|
Lincoln CO RW & Sewer Dist 4 Lincoln County |
2,525 | 3 | 0 | |
|
Oklahoma City Zoo Oklahoma County |
2,500 | 5 | 0 | |
|
Osage CO Rwd #21 Osage County |
1,500 | 9 | 4 | |
|
Oilton Creek County |
1,435 | 14 | 5 | |
|
Olive School Creek County |
465 | 6 | 3 | |
|
Tryon Lincoln County |
448 | 11 | 4 | |
|
Optima Texas County |
400 | 8 | 4 | |
|
Ralston Pawnee County |
335 | 3 | 0 | |
|
Kremlin-Hillsdale Rural Water District 1 Garfield County |
320 | 4 | 0 | |
|
Eakly Development Corp Caddo County |
277 | 4 | 0 | |
|
Caddo CO Rwd #1 (lookeba) Caddo County |
275 | 4 | 0 | |
|
Spring Cove RV Park&marina Onlake Hudson Mayes County |
225 | 10 | 2 | |
|
Ames Major County |
199 | 3 | 0 | |
|
Meno Major County |
195 | 3 | 1 | |
|
Stonetown Clearview MHC Cleveland County |
170 | 3 | 0 | |
|
Deer Creek Grant County |
147 | 7 | 3 | |
|
Ottawa CO Rwd # 3 Ottawa County |
140 | 10 | 4 | |
|
Hanna Pwa McIntosh County |
133 | 6 | 1 | |
|
Willow Greer County |
114 | 8 | 1 | |
|
Country East MHP Custer County |
97 | 5 | 1 | |
|
Surrey Hills Texas County |
87 | 14 | 4 | |
|
Osage Park Addn Prop Osage County |
65 | 12 | 5 | |
|
Oak Ridge Estates I & II Water Assoc. Delaware County |
62 | 11 | 4 | |
|
37 Mobile Homes Cleveland County |
50 | 3 | 0 | |
|
Red Wagon MHP Payne County |
46 | 7 | 2 | |
|
Timber Creek MHP East & West Pottawatomie County |
40 | 10 | 2 | |
|
Canoe Mountain Water System Cherokee County |
37 | 12 | 2 | |
|
Country Haven MHP Oklahoma County |
30 | 8 | 2 | |
|
Oklahoma City North Canadian Stp Oklahoma County |
30 | 7 | 1 | |
|
Grandview Village Delaware County |
24 | 5 | 0 | |
|
Skyview Mobile Home Park Grady County |
24 | 12 | 5 | |
|
Pecan Tree Water Assn Cleveland County |
22 | 8 | 3 |
About this data
A system is counted once if any of its violations in the past three years involved Arsenic, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Arsenic 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. Retrieved from ECHO on Oct 11, 2026.