How much wastewater does Sauk Centre WWTP treat?

Sauk Centre WWTP treats an average of 0.56 MGD and is permitted for a design flow of 0.89 MGD.

What treatment technology does Sauk Centre WWTP use?

Klarifi has identified biogas balloons at the Sauk Centre facility.

What is the NPDES permit for Sauk Centre WWTP?

The facility discharges under NPDES permit MN0024821, currently effective, expiring February 2028.

Is Sauk Centre WWTP in compliance?

Discharge monitoring reports show 13 violations at Sauk Centre WWTP in the last three years, 13 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Sauk Centre WWTP and how do I contact them?

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

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Sauk Centre WWTP

Sauk Centre, MN · Stearns County · Publicly Owned Treatment Works

Average flow: 0.56 MGD

Design flow: 0.89 MGD

NPDES permit: MN0024821; Effective

Permit expires: February 2028

Population served: 4,310; CWNS 2022

Sauk Centre WWTP is a publicly owned wastewater treatment works in Sauk Centre, Stearns County, Minnesota treating an average of 0.56 million gallons per day against a permitted design capacity of 0.89 MGD, serving about 4,310 residents. Treatment on site includes biogas balloons. It discharges under NPDES permit MN0024821 (effective), which expires in February 2028, with 13 recorded violations in the last three years.

Treatment technology

Treatment structures identified at this facility. Exact unit counts are available in Klarifi.

Biogas balloons

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Compliance snapshot (last 3 years)

Total violations: 13

Effluent violations: 13

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

Key contacts

Decision-makers at Sauk Centre WWTP.

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Lake Henry WWTP

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Sauk Centre 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 November 7, 2025.

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