How much wastewater does Dewey Public Works Authority treat?

Dewey Public Works Authority treats an average of 0.41 MGD and is permitted for a design flow of 0.44 MGD.

What treatment technology does Dewey Public Works Authority use?

Klarifi has identified clarifiers, carrousels / oxidation ditches at the Dewey facility.

What is the NPDES permit for Dewey Public Works Authority?

The facility discharges under NPDES permit OK0022551, currently effective, expiring May 2028.

Is Dewey Public Works Authority in compliance?

Discharge monitoring reports show 5 violations at Dewey Public Works Authority in the last three years, 5 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Dewey Public Works Authority and how do I contact them?

Dewey Public Works Authority is a publicly owned treatment works in Dewey, Oklahoma. Klarifi lists decision-maker contacts for this facility, available with a free trial.

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Dewey Public Works Authority

Dewey, OK · Washington County · Publicly Owned Treatment Works

Average flow: 0.41 MGD

Design flow: 0.44 MGD

NPDES permit: OK0022551; Effective

Permit expires: May 2028

Population served: 3,350; CWNS 2022

Dewey Public Works Authority is a publicly owned wastewater treatment plant in Dewey, Washington County, Oklahoma treating an average of 0.41 million gallons per day against a permitted design capacity of 0.44 MGD, serving about 3,350 residents. Treatment on site includes clarifiers, carrousels / oxidation ditches. It discharges under NPDES permit OK0022551 (effective), which expires in May 2028, with 5 recorded violations in the last three years.

Treatment technology

Treatment structures identified at this facility. Exact unit counts are available in Klarifi.

Clarifiers

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Carrousels / oxidation ditches

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Compliance snapshot (last 3 years)

Total violations: 5

Effluent violations: 5

Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.

Key contacts

Decision-makers at Dewey Public Works Authority.

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Dewey Public Works Authority: 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 March 16, 2025.

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