Candian Public Works Auth
On Hwy. 113 West Of Canadian, Canadian, OK 74425 · Pittsburg County · Publicly Owned Treatment Works
- Average flow
- 0.02 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 0.02 million gallons per day against a permitted design capacity of 0.03 MGD, serving about 252 residents. It discharges under NPDES permit OK0035297 (effective), which expires in October 2026, with 36 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Candian Public Works Auth.
Available with a free Klarifi account
See the full treatment train at Candian Public Works Auth: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 36
- Effluent violations
- 36
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 October 26, 2026; facility record last updated November 5, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Centrate · Ozonation · all terms