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 |
|---|---|---|---|---|
|
Camp Dakani #1 Oklahoma County |
25 | 3 | 0 | |
|
Cobb Creek Cafe Caddo County |
25 | 2 | 0 | |
|
Coe Longdale Area Blaine County |
25 | 3 | 0 | |
|
Coe Sandy Cove (canton) Blaine County |
25 | 2 | 0 | |
|
Crow's Roost Bar Caddo County |
25 | 2 | 0 | |
|
D.b.a.: Edmond Travel Stop Oklahoma County |
25 | 4 | 2 | |
|
E Express at Central Oklahoma County |
25 | 2 | 0 | |
|
Elk Creek Resort Cherokee County |
25 | 2 | 0 | |
|
Express Ranches Canadian County |
25 | 2 | 0 | |
|
Family Discount Store Oklahoma County |
25 | 2 | 0 | |
|
Gibson Baptist Assembly Texas County |
25 | 2 | 0 | |
|
Indian Creek Village Winery Major County |
25 | 4 | 2 | |
|
Jacktown Country Market Lincoln County |
25 | 2 | 0 | |
|
Lazy E Arena Logan County |
25 | 2 | 0 | |
|
Newalla Gas and Grill Oklahoma County |
25 | 3 | 1 | |
|
Old Farm Neighbors Inc. Pool Oklahoma County |
25 | 1 | 0 | |
|
Quail Ridge Trailer Park Beaver County |
25 | 3 | 1 | |
|
Red's Grocery Dewey County |
25 | 2 | 0 | |
|
Reflection Pointe Oklahoma County |
25 | 2 | 0 | |
|
Rolling Stone Stables and RV Park Pottawatomie County |
25 | 2 | 0 | |
|
Shops on 23rd Choctaw · Oklahoma County |
25 | 3 | 1 | |
|
Sonic Drive in Choctaw Road Oklahoma County |
25 | 2 | 0 | |
|
Super Star Truck Stop Texas County |
25 | 2 | 0 | |
|
Ten Spot #2 Beaver County |
25 | 2 | 1 | |
|
The Rock Church Oklahoma County |
25 | 4 | 1 | |
|
Thunder Travel Plaza Oklahoma County |
25 | 2 | 0 | |
|
Wangshi China Palace Oklahoma City · Oklahoma County |
25 | 2 | 0 | |
|
Wilderness Center Creek County |
25 | 2 | 0 | |
|
Skyview Mobile Home Park Grady County |
24 | 12 | 5 | |
|
Pecan Tree Water Assn Cleveland County |
22 | 8 | 3 | |
|
Wildwood Acres RV Park Payne County |
22 | 4 | 3 | |
|
Flying D&d RV Ranch Love County |
14 | 2 | 0 | |
|
Sunset RV Park Major County |
13 | 2 | 0 | |
|
Grand Country Lakeside RV & MHP Delaware County |
12 | 2 | 0 | |
|
Pittsburg Co. Water Authority Pittsburg County |
5 | 6 | 2 | |
|
Quartz Mountain Reg Water Auth Kiowa County |
5 | 3 | 1 |
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.