Walnut Grove WWTP
Walnut Grove, MN · Redwood County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 0.2 MGD
- NPDES permit
- MN0021776
- Administratively continued
- Permit expires
- March 2016
- Population served
- —
- CWNS 2022
Walnut Grove WWTP is a publicly owned wastewater treatment works in Walnut Grove, Redwood County, Minnesota. Treatment on site includes aerated lagoons, uncovered lagoons, cooling towers. It discharges under NPDES permit MN0021776 (administratively continued), which expires in March 2016.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
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- Effluent violations
- —
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Walnut Grove WWTP.
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Nearby wastewater treatment plants in Minnesota
Revere · 5 mi away
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Tracy · 7 mi away
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Lamberton Township · 10 mi away
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Lucan · 13 mi away
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Currie · 14 mi away
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Milroy · 14 mi away
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Currie · 14 mi away
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Wanda · 15 mi away
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Walnut Grove WWTP: 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 July 19, 2026.