How much wastewater does Newcastle Public Works Auth. treat?

Newcastle Public Works Auth. treats an average of 0.5 MGD and is permitted for a design flow of 1.5 MGD.

What treatment technology does Newcastle Public Works Auth. use?

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

What is the NPDES permit for Newcastle Public Works Auth.?

The facility discharges under NPDES permit OK0028614, currently effective, expiring March 2027.

Is Newcastle Public Works Auth. in compliance?

Discharge monitoring reports show 91 violations at Newcastle Public Works Auth. in the last three years, 91 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Newcastle Public Works Auth. and how do I contact them?

Newcastle Public Works Auth. is a publicly owned treatment works in Newcastle, Oklahoma. Klarifi lists 1 verified decision-maker contact for this facility, available with a free trial.

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Newcastle Public Works Auth.

Newcastle, OK · Mcclain County · Publicly Owned Treatment Works

Average flow: 0.5 MGD

Design flow: 1.5 MGD

NPDES permit: OK0028614; Effective

Permit expires: March 2027

Population served: 6,259; CWNS 2022

Newcastle Public Works Auth. is a publicly owned wastewater treatment plant in Newcastle, Mcclain County, Oklahoma treating an average of 0.5 million gallons per day against a permitted design capacity of 1.5 MGD, serving about 6,259 residents. Treatment on site includes clarifiers, uncovered lagoons. It discharges under NPDES permit OK0028614 (effective), which expires in March 2027, with 91 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: 91

Effluent violations: 91

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

Key contacts

1 verified contact for Newcastle Public Works Auth., with validated emails and direct phone numbers.

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Names, validated emails and direct phone numbers for decision-makers at Newcastle Public Works Auth., plus the full compliance history and discharge data.

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Newcastle Public Works Auth.: 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 19, 2026.

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