How much wastewater does Dewar WWTF treat?

Dewar WWTF treats an average of 0.01 MGD and is permitted for a design flow of 0.13 MGD.

What treatment technology does Dewar WWTF use?

Klarifi has identified uncovered lagoons at the Dewar facility.

What is the NPDES permit for Dewar WWTF?

The facility discharges under NPDES permit OK0027537, currently effective, expiring September 2026.

Is Dewar WWTF in compliance?

Discharge monitoring reports show 29 violations at Dewar WWTF in the last three years, 29 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Dewar WWTF and how do I contact them?

Dewar WWTF is a publicly owned treatment works in Dewar, Oklahoma. Klarifi lists decision-maker contacts for this facility, available with a free trial.

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Dewar WWTF

Dewar, OK · Okmulgee County · Publicly Owned Treatment Works

Average flow: 0.01 MGD

Design flow: 0.13 MGD

NPDES permit: OK0027537; Effective

Permit expires: September 2026

Population served: 968; CWNS 2022

Dewar WWTF is a publicly owned wastewater treatment works in Dewar, Okmulgee County, Oklahoma treating an average of 0.01 million gallons per day against a permitted design capacity of 0.13 MGD, serving about 968 residents. Treatment on site includes uncovered lagoons. It discharges under NPDES permit OK0027537 (effective), which expires in September 2026, with 29 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: 29

Effluent violations: 29

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

Key contacts

Decision-makers at Dewar WWTF.

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Nearby wastewater treatment plants in Oklahoma

Okmulgee WWTP

Okmulgee · 10 mi away

2.48 MGD

Morris, City Of -NW Plant

Morris · 11 mi away

0.05 MGD

Weleetka Pwa

Weleetka · 14 mi away

0.04 MGD

Dustin Public Works Authority

Dustin · 15 mi away

—

Okemah Utilities Authority

Okemah · 19 mi away

0.36 MGD

Boynton Pwa

Boynton · 21 mi away

—

Checotah WWTP

Checotah · 25 mi away

0.3 MGD

Eufaula Public Works Authority

Eufaula · 25 mi away

0.37 MGD

Dewar WWTF: 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 13, 2026.

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