Colona - Green Rock Regional STP

Colona, IL · Henry County · Publicly Owned Treatment Works

Average flow: 0.29 MGD

Design flow: —

NPDES permit: 3604681765; Effective

Permit expires: December 2030

Treatment technology

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

Treatment structure data not yet analyzed for this facility.

Compliance snapshot (last 3 years)

Total violations: 35

Effluent violations: 13

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

Key contacts

1 verified contact for Colona - Green Rock Regional STP, with validated emails and direct phone numbers.

Unlock 1 verified contact

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

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Nearby wastewater treatment plants in Illinois

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Moline South Treatment Plant

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Orion Wastewater Treatment Plant

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Geneseo Stp, City Of

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North Slope Treatment Plant

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4.64 MGD

Coyne Center Sanitary District - STP

Milan · 12 mi away

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Milan STP

Milan · 12 mi away

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Cambridge Stp, Village Of

Cambridge · 13 mi away

0.49 MGD

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

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