How much wastewater does Gilman North Stp, City Of treat?

Gilman North Stp, City Of treats an average of 0.22 MGD and is permitted for a design flow of 1.15 MGD.

What is the NPDES permit for Gilman North Stp, City Of?

The facility discharges under NPDES permit IL0025062, currently effective, expiring October 2027.

Is Gilman North Stp, City Of in compliance?

Discharge monitoring reports show 6 violations at Gilman North Stp, City Of in the last three years, 6 of them effluent limit exceedances. The full history is available in Klarifi.

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

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

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Gilman North Stp, City Of

Q: What treatment technology does Gilman North Stp, City Of use?

Klarifi has identified uncovered lagoons, carrousels / oxidation ditches at the Gilman facility.

Gilman, IL · Iroquois County · Publicly Owned Treatment Works

Average flow: 0.22 MGD

Design flow: 1.15 MGD

NPDES permit: IL0025062; Effective

Permit expires: October 2027

Population served: 1,814; CWNS 2022

Gilman North Stp, City Of is a publicly owned wastewater treatment works in Gilman, Iroquois County, Illinois treating an average of 0.22 million gallons per day against a permitted design capacity of 1.15 MGD, serving about 1,814 residents. Treatment on site includes uncovered lagoons, carrousels / oxidation ditches. It discharges under NPDES permit IL0025062 (effective), which expires in October 2027, with 6 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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Carrousels / oxidation ditches

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Compliance snapshot (last 3 years)

Total violations: 6

Effluent violations: 6

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

Key contacts

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

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Gilman North 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 August 19, 2026.

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