How much wastewater does Cold Spring WWTP treat?

Cold Spring WWTP treats an average of 1.16 MGD.

What treatment technology does Cold Spring WWTP use?

Klarifi has identified uncovered lagoons, biogas silos, biogas balloons at the Cold Spring facility.

What is the NPDES permit for Cold Spring WWTP?

The facility discharges under NPDES permit MNL023094, currently effective, expiring December 2030.

Is Cold Spring WWTP in compliance?

Discharge monitoring reports show no violations at Cold Spring WWTP in the last three years.

Who operates Cold Spring WWTP and how do I contact them?

Cold Spring WWTP is a publicly owned treatment works in Cold Spring, Minnesota. Klarifi lists 2 verified decision-maker contacts for this facility, available with a free trial.

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Cold Spring WWTP

Cold Spring, MN · Stearns County · Publicly Owned Treatment Works

Average flow: 1.16 MGD

Design flow: —

NPDES permit: MNL023094; Effective

Permit expires: December 2030

Population served: 2,382; CWNS 2022

Cold Spring WWTP is a publicly owned wastewater treatment works in Cold Spring, Stearns County, Minnesota treating an average of 1.16 million gallons per day, serving about 2,382 residents. Treatment on site includes uncovered lagoons, biogas silos, biogas balloons. It discharges under NPDES permit MNL023094 (effective), which expires in December 2030, with 0 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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Biogas silos

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Biogas balloons

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Compliance snapshot (last 3 years)

Total violations: 0

Effluent violations: 0

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

Key contacts

2 verified contacts for Cold Spring WWTP, with validated emails and direct phone numbers.

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Names, validated emails and direct phone numbers for decision-makers at Cold Spring WWTP, plus the full compliance history and discharge data.

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Cold Spring 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 March 6, 2025.

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