How much wastewater does Payson STP treat?

Payson STP treats an average of 0.04 MGD and is permitted for a design flow of 0.55 MGD.

What treatment technology does Payson STP use?

Klarifi has identified uncovered lagoons at the Payson facility.

What is the NPDES permit for Payson STP?

The facility discharges under NPDES permit IL0030554, currently effective, expiring May 2031.

Is Payson STP in compliance?

Discharge monitoring reports show 1 violation at Payson STP in the last three years, 1 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Payson STP and how do I contact them?

Payson STP is a publicly owned treatment works in Payson, Illinois. Klarifi lists decision-maker contacts for this facility, available with a free trial.

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Payson STP

Payson, IL · Adams County · Publicly Owned Treatment Works

Average flow: 0.04 MGD

Design flow: 0.55 MGD

NPDES permit: IL0030554; Effective

Permit expires: May 2031

Population served: 1,061; CWNS 2022

Payson STP is a publicly owned wastewater treatment works in Payson, Adams County, Illinois treating an average of 0.04 million gallons per day against a permitted design capacity of 0.55 MGD, serving about 1,061 residents. Treatment on site includes uncovered lagoons. It discharges under NPDES permit IL0030554 (effective), which expires in May 2031, with 1 recorded violation 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: 1

Effluent violations: 1

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

Key contacts

Decision-makers at Payson STP.

No verified contacts on file yet

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Payson STP: 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 7, 2025.

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