How much wastewater does De Pue treat?

De Pue treats an average of 0.2 MGD and is permitted for a design flow of 0.96 MGD.

What is the NPDES permit for De Pue?

The facility discharges under NPDES permit IL0023523, currently effective, expiring December 2026.

Is De Pue in compliance?

Discharge monitoring reports show 24 violations at De Pue in the last three years, 24 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates De Pue and how do I contact them?

De Pue is a publicly owned treatment works in Depue, Illinois. Klarifi lists decision-maker contacts for this facility, available with a free trial.

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De Pue

Depue, IL · Bureau County · Publicly Owned Treatment Works

Average flow: 0.2 MGD

Design flow: 0.96 MGD

NPDES permit: IL0023523; Effective

Permit expires: December 2026

Population served: 1,838; CWNS 2022

De Pue is a publicly owned wastewater treatment plant in Depue, Bureau County, Illinois treating an average of 0.2 million gallons per day against a permitted design capacity of 0.96 MGD, serving about 1,838 residents. It discharges under NPDES permit IL0023523 (effective), which expires in December 2026, with 24 recorded violations in the last three years.

Treatment technology

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

Treatment structure data not yet analyzed for this facility.

Compliance snapshot (last 3 years)

Total violations: 24

Effluent violations: 24

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

Key contacts

Decision-makers at De Pue.

No verified contacts on file yet

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De Pue: 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 December 4, 2025.

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