Nitrate-Nitrite (Combined) violations in Oklahoma
236 active public water systems in Oklahoma had a Nitrate-Nitrite (Combined) violation in the past three years, 8 of them in the latest quarter of EPA's data. What Nitrate-Nitrite (Combined) is and why it matters.
Systems with a Nitrate-Nitrite (Combined) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Lds Church of Choctaw Oklahoma County |
250 | 3 | 0 | |
|
Lookeba Sickles School Caddo County |
250 | 8 | 2 | |
|
Jet Alfalfa County |
230 | 5 | 1 | |
|
Spring Cove RV Park&marina Onlake Hudson Mayes County |
225 | 10 | 2 | |
|
Full Gospel Camp Ottawa County |
200 | 2 | 0 | |
|
Roger Mills Rws & Swmd #1 Roger Mills County |
200 | 10 | 2 | |
|
Harper CO Rwd #1 Harper County |
198 | 10 | 1 | |
|
Quinlan Community Rwd #1 Woodward County |
185 | 4 | 0 | |
|
Roger Mills Rws & Swmd #3 (reydon) Roger Mills County |
177 | 5 | 1 | |
|
Abes RV Park Oklahoma County |
175 | 5 | 2 | |
|
Sharon Utilities Woodward County |
175 | 10 | 2 | |
|
Hallett Public Works Authority Pawnee County |
168 | 4 | 0 | |
|
Shiloh Summer Camp, Inc. Oklahoma City · Oklahoma County |
155 | 2 | 0 | |
|
Sullivant Memorial Retreat Cleveland County |
155 | 2 | 0 | |
|
Friendship Pentecostal Church Oklahoma City · Oklahoma County |
150 | 3 | 1 | |
|
Potters Trailer Park Beckham County |
150 | 6 | 0 | |
|
Deer Creek Grant County |
147 | 7 | 3 | |
|
Ottawa CO Rwd # 3 Ottawa County |
140 | 10 | 4 | |
|
Fidlers Bend Adair County |
135 | 2 | 0 | |
|
Golden Oaks Home Owners Assn Carter County |
135 | 8 | 4 | |
|
Hanna Pwa McIntosh County |
133 | 6 | 1 | |
|
Willow Greer County |
114 | 8 | 1 | |
|
Cheyenne Arapaho Fonda County |
100 | 1 | 0 | |
|
Felt School Cimarron County |
100 | 5 | 0 | |
|
Huttons Corner MHP Blaine County |
100 | 2 | 0 | |
|
Red Rock Canyon Adventure Park Caddo County |
100 | 2 | 0 | |
|
Wolf Warehouse/pqd 2 Creek County |
100 | 2 | 0 | |
|
Country East MHP Custer County |
97 | 5 | 1 | |
|
Sooner Utilities-Crutcho Oklahoma County |
93 | 6 | 2 | |
|
Brooksville Pottawatomie County |
90 | 10 | 4 | |
|
Three Springs Farm Cherokee County |
89 | 1 | 0 | |
|
Surrey Hills Texas County |
87 | 14 | 4 | |
|
Freedom Farms Cleveland County |
85 | 7 | 3 | |
|
Turkey Ford Public School Dist C010 Ottawa County |
85 | 2 | 0 | |
|
Loyal Kingfisher County |
81 | 5 | 0 | |
|
Thirsty Water Corp Greer County |
81 | 3 | 0 | |
|
Grady CO Rwd #3 Grady County |
80 | 10 | 4 | |
|
Old #9 Cleveland County |
80 | 2 | 0 | |
|
Mountain Village Development Comanche County |
77 | 7 | 1 | |
|
Insurance Auto Auctions Oklahoma County |
75 | 2 | 0 | |
|
Traverse Wind Energy, LLC Custer County |
75 | 2 | 0 | |
|
Trucks and Teacups Daycare Cleveland County |
75 | 6 | 1 | |
|
Gypsy Holiness Church Creek County |
70 | 3 | 1 | |
|
Charlie Brown's Learning Center Oklahoma County |
65 | 4 | 1 | |
|
Osage Park Addn Prop Osage County |
65 | 12 | 5 | |
|
Oak Ridge Estates I & II Water Assoc. Delaware County |
62 | 11 | 4 | |
|
Legacy Baptist Church Oklahoma County |
60 | 2 | 0 | |
|
Okla Natl Stockyards Oklahoma County |
60 | 6 | 1 | |
|
England Shores MHP Delaware County |
55 | 8 | 3 | |
|
Alameda Market Cleveland County |
50 | 2 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Nitrate-Nitrite (Combined), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Nitrate-Nitrite (Combined) 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.