How much wastewater does Ashley Stp, City Of treat?

Ashley Stp, City Of treats an average of 0.03 MGD and is permitted for a design flow of 0.96 MGD.

What treatment technology does Ashley Stp, City Of use?

Klarifi has identified uncovered lagoons at the Ashley facility.

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

The facility discharges under NPDES permit ILG580199, currently effective, expiring May 2027.

Is Ashley Stp, City Of in compliance?

Discharge monitoring reports show no violations at Ashley Stp, City Of in the last three years.

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

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

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Ashley Stp, City Of

Ashley, IL · Washington County · Publicly Owned Treatment Works

Average flow: 0.03 MGD

Design flow: 0.96 MGD

NPDES permit: ILG580199; Effective

Permit expires: May 2027

Population served: 536; CWNS 2022

Ashley Stp, City Of is a publicly owned wastewater treatment works in Ashley, Washington County, Illinois treating an average of 0.03 million gallons per day against a permitted design capacity of 0.96 MGD, serving about 536 residents. Treatment on site includes uncovered lagoons. It discharges under NPDES permit ILG580199 (effective), which expires in May 2027, 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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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

Decision-makers at Ashley Stp, City Of.

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Nashville Stp, City Of

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Ashley 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 28, 2025.

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