How much wastewater does Stigler Municipal Improvement Authority treat?

Stigler Municipal Improvement Authority treats an average of 0.31 MGD and is permitted for a design flow of 0.34 MGD.

What treatment technology does Stigler Municipal Improvement Authority use?

Klarifi has identified uncovered lagoons at the Stigler facility.

What is the NPDES permit for Stigler Municipal Improvement Authority?

The facility discharges under NPDES permit OK0020711, currently effective, expiring July 2029.

Is Stigler Municipal Improvement Authority in compliance?

Discharge monitoring reports show 23 violations at Stigler Municipal Improvement Authority in the last three years, 23 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Stigler Municipal Improvement Authority and how do I contact them?

Stigler Municipal Improvement Authority is a publicly owned treatment works in Stigler, Oklahoma. Klarifi lists 1 verified decision-maker contact for this facility, available with a free trial.

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Stigler Municipal Improvement Authority

Stigler, OK · Haskell County · Publicly Owned Treatment Works

Average flow: 0.31 MGD

Design flow: 0.34 MGD

NPDES permit: OK0020711; Effective

Permit expires: July 2029

Population served: 2,878; CWNS 2022

Stigler Municipal Improvement Authority is a publicly owned wastewater treatment plant in Stigler, Haskell County, Oklahoma treating an average of 0.31 million gallons per day against a permitted design capacity of 0.34 MGD, serving about 2,878 residents. Treatment on site includes uncovered lagoons. It discharges under NPDES permit OK0020711 (effective), which expires in July 2029, with 23 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: 23

Effluent violations: 23

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

Key contacts

1 verified contact for Stigler Municipal Improvement Authority, with validated emails and direct phone numbers.

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Names, validated emails and direct phone numbers for decision-makers at Stigler Municipal Improvement Authority, plus the full compliance history and discharge data.

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Stigler Municipal Improvement 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 September 11, 2026.

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