Oklahoma NPDES Permits
In Oklahoma, EPA issues NPDES permits on tribal lands. For more information, please contact EPA Region 6. All other permits are issued by the Oklahoma Dept. of Environmental Quality.
For state-issued permits, visit Oklahoma Dept. of Environmental Quality Wastewater & Stormwater
For stormwater permits, visit NPDES Stormwater Program in Region 6.
| Location | Facility or Permit Name | Permit Number | Effective Date | Expiration Date |
|---|---|---|---|---|
| Durant | Choctaw Nation of Oklahoma WWTP - Hochatown | OK0046087 | 08-01-2022 | 09-30-2027 |
| Harrah | Kickapoo Casino Harrah Wastewater Treatment Plant | OK0044733 | 08-01-2023 | 09-30-2028 |
| General Permit | Discharges From Hydrostatic Testing of New and Existing Vessels in Oklahoma (OKG27F000) |
OKG27F000 OKG27I000 | 04-15-2023 | 04-14-2028 |