Caledonia WWTP

Caledonia, MN · Houston County · Publicly Owned Treatment Works

Average flow: 0.17 MGD

Design flow: 0.57 MGD

NPDES permit: 3602695830; ADC

Permit expires: January 2024

Treatment technology

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

Clarifiers

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Aerated lagoons

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Carrousels / oxidation ditches

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Biogas silos

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Compliance snapshot (last 3 years)

Total violations: 16

Effluent violations: 16

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

Key contacts

Contacts for Caledonia WWTP are available in the Klarifi platform.

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

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Nearby wastewater treatment plants in Minnesota

Spring Grove WWTP

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0.07 MGD

Houston

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0.08 MGD

Hokah-Well #1 Entry Point

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0.07 MGD

Brownsville WWTP

Brownsville · 12 mi away

0.03 MGD

Mabel WWTP

Mabel · 15 mi away

0.05 MGD

Rushford WWTP

Rushford · 17 mi away

0.11 MGD

Peterson WWTP

Peterson · 20 mi away

0.02 MGD

Harmony WWTP

Harmony · 26 mi away

0.07 MGD

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

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