How much wastewater does Langston WWTP treat?

Langston WWTP treats an average of 0.26 MGD and is permitted for a design flow of 0.4 MGD.

What treatment technology does Langston WWTP use?

Klarifi has identified clarifiers, uncovered lagoons at the Langston facility.

What is the NPDES permit for Langston WWTP?

The facility discharges under NPDES permit OK0027511, currently effective, expiring August 2029.

Is Langston WWTP in compliance?

Discharge monitoring reports show 7 violations at Langston WWTP in the last three years, 7 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Langston WWTP and how do I contact them?

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

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Langston WWTP

Langston, OK · Logan County · Publicly Owned Treatment Works

Average flow: 0.26 MGD

Design flow: 0.4 MGD

NPDES permit: OK0027511; Effective

Permit expires: August 2029

Population served: 1,760; CWNS 2022

Langston WWTP is a publicly owned wastewater treatment works in Langston, Logan County, Oklahoma treating an average of 0.26 million gallons per day against a permitted design capacity of 0.4 MGD, serving about 1,760 residents. Treatment on site includes clarifiers, uncovered lagoons. It discharges under NPDES permit OK0027511 (effective), which expires in August 2029, with 7 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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Uncovered lagoons

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Compliance snapshot (last 3 years)

Total violations: 7

Effluent violations: 7

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

Key contacts

Decision-makers at Langston WWTP.

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Langston WWTP: 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 May 24, 2025.

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