Cushing, City Of - South STP
Cushing, OK · Payne County · Publicly Owned Treatment Works
- Average flow
- 0.82 MGD
- Design flow
- 1.6 MGD
- NPDES permit
- OK0026701
- Effective
- Permit expires
- April 2031
- Population served
- 8,821
- CWNS 2022
Cushing, City Of - South STP is a publicly owned wastewater treatment works in Cushing, Payne County, Oklahoma treating an average of 0.82 million gallons per day against a permitted design capacity of 1.6 MGD, serving about 8,821 residents. Treatment on site includes uncovered lagoons, biogas silos. It discharges under NPDES permit OK0026701 (effective), which expires in April 2031, with 19 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 19
- Effluent violations
- 8
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Cushing, City Of - South STP.
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Nearby wastewater treatment plants in Oklahoma
Drumright · 7 mi away
0.41 MGD
Yale · 11 mi away
0.02 MGD
Stroud · 14 mi away
0.18 MGD
Depew · 16 mi away
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Stroud · 17 mi away
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Perkins · 17 mi away
0.2 MGD
Stillwater · 19 mi away
4.65 MGD
Carney · 19 mi away
0.01 MGD
Cushing, City Of - South STP: frequently asked questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed September 11, 2026; facility record last updated August 19, 2026.