Okawville STP

Okawville, IL · Washington County · Publicly Owned Treatment Works

Average flow: 0.14 MGD

Design flow: 0.88 MGD

NPDES permit: 3603772446; Effective

Permit expires: May 2027

Treatment technology

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

Aerated lagoons

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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

Contacts for Okawville STP are available in the Klarifi platform.

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Names, validated emails and direct phone numbers for decision-makers at Okawville STP — plus full compliance history and discharge data.

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Nearby wastewater treatment plants in Illinois

Addieville STP

Addieville · 5 mi away

0.002 MGD

Damiansville Stp, Village Of

Albers · 6 mi away

0.04 MGD

New Memphis Sd STP

New Baden · 6 mi away

0.05 MGD

Germantown Stp, Village Of

Germantown · 7 mi away

0.11 MGD

Albers Stp, Village Of

Albers · 8 mi away

0.09 MGD

Bartelso Stp, Village Of

Bartelso · 9 mi away

0.07 MGD

New Baden Stp, Village Of

New Baden · 9 mi away

0.28 MGD

Saint Libory Stp, Village Of

Saint Libory · 10 mi away

0.04 MGD

Data sourced from public EPA / NPDES records and Klarifi analysis. Last updated November 2025.

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