Flat Rock Stp, Village Of

Flat Rock, IL · Crawford County · Publicly Owned Treatment Works

Average flow: 0.03 MGD

Design flow: 0.26 MGD

NPDES permit: 3603634576; 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: 5

Effluent violations: 5

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

Key contacts

Contacts for Flat Rock Stp, Village Of are available in the Klarifi platform.

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Names, validated emails and direct phone numbers for decision-makers at Flat Rock Stp, Village Of — plus full compliance history and discharge data.

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Oblong Stp, Village Of

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Hutsonville STP

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Sumner STP

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St Marie STP

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Willow Hill Stp, Village Of

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

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