How much wastewater does Olney Stp, City Of treat?

Olney Stp, City Of treats an average of 0.87 MGD.

What treatment technology does Olney Stp, City Of use?

Klarifi has identified clarifiers, uncovered lagoons, biogas balloons, biosolids aerobic digestion, flow equalization, primary clarification or sedimentation, screening at the Olney facility, with disinfection, uv on record as planned.

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

The facility discharges under NPDES permit ILL048755, currently effective, expiring December 2030.

Is Olney Stp, City Of in compliance?

Discharge monitoring reports show 34 violations at Olney Stp, City Of in the last three years, 34 of them effluent limit exceedances. The full history is available in Klarifi.

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

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

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Olney Stp, City Of

Olney, IL · Richland County · Publicly Owned Treatment Works

Average flow: 0.87 MGD

Design flow: —

NPDES permit: ILL048755; Effective

Permit expires: December 2030

Population served: 8,929; CWNS 2022

Olney Stp, City Of is a publicly owned wastewater treatment works in Olney, Richland County, Illinois treating an average of 0.87 million gallons per day, serving about 8,929 residents. Treatment on site includes clarifiers, uncovered lagoons, biogas balloons, biosolids aerobic digestion, flow equalization and other unit processes. It discharges under NPDES permit ILL048755 (effective), which expires in December 2030, with 34 recorded violations in the last three years. Planned upgrades on record: disinfection, uv.

Treatment technology

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

Clarifiers

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Uncovered lagoons

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Biogas balloons

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Biosolids Aerobic Digestion

unit process

Flow Equalization

unit process

Primary Clarification or Sedimentation

unit process

Screening

unit process

Disinfection, UV

planned upgrade

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Compliance snapshot (last 3 years)

Total violations: 34

Effluent violations: 34

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

Key contacts

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

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Olney 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 19, 2025.

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