How much wastewater does Oglesby Stp, City Of treat?

Oglesby Stp, City Of treats an average of 0.31 MGD and is permitted for a design flow of 1.22 MGD.

What treatment technology does Oglesby Stp, City Of use?

Klarifi has identified clarifiers, biogas balloons at the Oglesby facility.

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

The facility discharges under NPDES permit IL0024996, currently effective, expiring January 2031.

Is Oglesby Stp, City Of in compliance?

Discharge monitoring reports show 109 violations at Oglesby Stp, City Of in the last three years, 109 of them effluent limit exceedances. The full history is available in Klarifi.

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

Oglesby Stp, City Of is a publicly owned treatment works in Oglesby, Illinois. Klarifi lists 2 verified decision-maker contacts for this facility, available with a free trial.

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Oglesby Stp, City Of

Oglesby, IL · La Salle County · Publicly Owned Treatment Works

Average flow: 0.31 MGD

Design flow: 1.22 MGD

NPDES permit: IL0024996; Effective

Permit expires: January 2031

Population served: 3,559; CWNS 2022

Oglesby Stp, City Of is a publicly owned wastewater treatment works in Oglesby, La Salle County, Illinois treating an average of 0.31 million gallons per day against a permitted design capacity of 1.22 MGD, serving about 3,559 residents. Treatment on site includes clarifiers, biogas balloons. It discharges under NPDES permit IL0024996 (effective), which expires in January 2031, with 109 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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Biogas balloons

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Compliance snapshot (last 3 years)

Total violations: 109

Effluent violations: 109

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

Key contacts

2 verified contacts for Oglesby 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 Oglesby Stp, City Of, plus the full compliance history and discharge data.

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Oglesby 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 November 28, 2025.

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