How much wastewater does Auburn Stp, City Of treat?

Auburn Stp, City Of treats an average of 0.41 MGD and is permitted for a design flow of 1 MGD.

What treatment technology does Auburn Stp, City Of use?

Klarifi has identified aerated lagoons at the Auburn facility.

What is the NPDES permit for Auburn Stp, City Of?

The facility discharges under NPDES permit IL0022403, currently effective, expiring March 2029.

Is Auburn Stp, City Of in compliance?

Discharge monitoring reports show 31 violations at Auburn Stp, City Of in the last three years, 31 of them effluent limit exceedances. The full history is available in Klarifi.

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

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

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Auburn Stp, City Of

Auburn, IL · Sangamon County · Publicly Owned Treatment Works

Average flow: 0.41 MGD

Design flow: 1 MGD

NPDES permit: IL0022403; Effective

Permit expires: March 2029

Population served: 3,812; CWNS 2022

Auburn Stp, City Of is a publicly owned wastewater treatment works in Auburn, Sangamon County, Illinois treating an average of 0.41 million gallons per day against a permitted design capacity of 1 MGD, serving about 3,812 residents. Treatment on site includes aerated lagoons. It discharges under NPDES permit IL0022403 (effective), which expires in March 2029, with 31 recorded violations in the last three years.

Treatment technology

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

Aerated lagoons

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Compliance snapshot (last 3 years)

Total violations: 31

Effluent violations: 31

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

Key contacts

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

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

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Auburn Stp, 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 March 8, 2025.

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