How much wastewater does Blackwell, City Of treat?

Blackwell, City Of treats an average of 0.79 MGD and is permitted for a design flow of 1 MGD.

What treatment technology does Blackwell, City Of use?

Klarifi has identified uncovered lagoons at the Blackwell facility.

What is the NPDES permit for Blackwell, City Of?

The facility discharges under NPDES permit OK0031909, currently effective, expiring June 2029.

Is Blackwell, City Of in compliance?

Discharge monitoring reports show 77 violations at Blackwell, City Of in the last three years, 13 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Blackwell, City Of and how do I contact them?

Blackwell, City Of is a publicly owned treatment works in Blackwell, Oklahoma. Klarifi lists 1 verified decision-maker contact for this facility, available with a free trial.

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Blackwell, City Of

Blackwell, OK · Kay County · Publicly Owned Treatment Works

Average flow: 0.79 MGD

Design flow: 1 MGD

NPDES permit: OK0031909; Effective

Permit expires: June 2029

Population served: 6,069; CWNS 2022

Blackwell, City Of is a publicly owned wastewater treatment plant in Blackwell, Kay County, Oklahoma treating an average of 0.79 million gallons per day against a permitted design capacity of 1 MGD, serving about 6,069 residents. Treatment on site includes uncovered lagoons. It discharges under NPDES permit OK0031909 (effective), which expires in June 2029, with 77 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: 77

Effluent violations: 13

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

Key contacts

1 verified contact for Blackwell, City Of, with validated emails and direct phone numbers.

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Names, validated emails and direct phone numbers for decision-makers at Blackwell, City Of, plus the full compliance history and discharge data.

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Blackwell, City Of: 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 February 16, 2025.

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