How much wastewater does Lake County Public Works Department treat?

Lake County Public Works Department treats an average of 7.89 MGD.

What treatment technology does Lake County Public Works Department use?

Klarifi has identified clarifiers at the Buffalo Grove facility.

What is the NPDES permit for Lake County Public Works Department?

The facility discharges under NPDES permit ILL022055, currently effective, expiring December 2030.

Is Lake County Public Works Department in compliance?

Discharge monitoring reports show 1 violation at Lake County Public Works Department in the last three years, 1 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Lake County Public Works Department and how do I contact them?

Lake County Public Works Department is a publicly owned treatment works in Buffalo Grove, Illinois. Klarifi lists 5 verified decision-maker contacts for this facility, available with a free trial.

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Lake County Public Works Department

Buffalo Grove, IL · Cook County · Publicly Owned Treatment Works

Average flow: 7.89 MGD

Design flow: —

NPDES permit: ILL022055; Effective

Permit expires: December 2030

Population served: 72,507; CWNS 2022

Lake County Public Works Department is a publicly owned wastewater treatment plant in Buffalo Grove, Cook County, Illinois treating an average of 7.89 million gallons per day, serving about 72,507 residents. Treatment on site includes clarifiers. It discharges under NPDES permit ILL022055 (effective), which expires in December 2030, with 1 recorded violation 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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Compliance snapshot (last 3 years)

Total violations: 1

Effluent violations: 1

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

Key contacts

5 verified contacts for Lake County Public Works Department, with validated emails and direct phone numbers.

Unlock 5 verified contacts (2 more than shown)

Names, validated emails and direct phone numbers for decision-makers at Lake County Public Works Department, plus the full compliance history and discharge data.

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Lake County Public Works Department: 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 May 18, 2025.

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