Candian Public Works Auth
Canadian, OK · Pittsburg County · Publicly Owned Treatment Works
- Average flow
- 0.0069 MGD
- Design flow
- 0.03 MGD
- NPDES permit
- OK0035297
- Effective
- Permit expires
- October 2026
- Population served
- 252
- CWNS 2022
Candian Public Works Auth is a publicly owned wastewater treatment plant in Canadian, Pittsburg County, Oklahoma treating an average of 0.0069 million gallons per day against a permitted design capacity of 0.03 MGD, serving about 252 residents. Treatment on site includes uncovered lagoons. It discharges under NPDES permit OK0035297 (effective), which expires in October 2026, with 40 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Uncovered lagoons
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Compliance snapshot (last 3 years)
- Total violations
- 40
- Effluent violations
- 40
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Candian Public Works Auth.
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Candian Public Works Auth: 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 November 5, 2025.