How much wastewater does Sesser Stp, City Of treat?

Sesser Stp, City Of treats an average of 0.02 MGD and is permitted for a design flow of 1 MGD.

What treatment technology does Sesser Stp, City Of use?

Klarifi has identified covered lagoons, uncovered lagoons at the Sesser facility.

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

The facility discharges under NPDES permit IL0031020, currently effective, expiring March 2028.

Is Sesser Stp, City Of in compliance?

Discharge monitoring reports show 3 violations at Sesser Stp, City Of in the last three years, 3 of them effluent limit exceedances. The full history is available in Klarifi.

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

Sesser Stp, City Of is a publicly owned treatment works in Sesser, Illinois. Klarifi lists 4 verified decision-maker contacts for this facility, available with a free trial.

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Sesser Stp, City Of

Sesser, IL · Franklin County · Publicly Owned Treatment Works

Average flow: 0.02 MGD

Design flow: 1 MGD

NPDES permit: IL0031020; Effective

Permit expires: March 2028

Population served: 1,837; CWNS 2022

Sesser Stp, City Of is a publicly owned wastewater treatment works in Sesser, Franklin County, Illinois treating an average of 0.02 million gallons per day against a permitted design capacity of 1 MGD, serving about 1,837 residents. Treatment on site includes covered lagoons, uncovered lagoons. It discharges under NPDES permit IL0031020 (effective), which expires in March 2028, with 3 recorded violations in the last three years.

Treatment technology

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

Covered lagoons

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Uncovered lagoons

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Compliance snapshot (last 3 years)

Total violations: 3

Effluent violations: 3

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

Key contacts

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

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Sesser 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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