Wanamingo
Wanamingo, MN · Goodhue County · Publicly Owned Treatment Works
- Average flow
- 0.15 MGD
- Design flow
- 0.46 MGD
- NPDES permit
- MN0022209
- Effective
- Permit expires
- November 2026
- Population served
- 1,113
- CWNS 2022
Wanamingo is a publicly owned wastewater treatment plant in Wanamingo, Goodhue County, Minnesota treating an average of 0.15 million gallons per day against a permitted design capacity of 0.46 MGD, serving about 1,113 residents. Treatment on site includes biogas balloons. It discharges under NPDES permit MN0022209 (effective), which expires in November 2026, with 20 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Biogas balloons
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Compliance snapshot (last 3 years)
- Total violations
- 20
- Effluent violations
- 20
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Wanamingo.
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Nearby wastewater treatment plants in Minnesota
Zumbrota · 6 mi away
0.49 MGD
Kenyon · 10 mi away
0.21 MGD
Pine Island · 10 mi away
0.23 MGD
Goodhue · 10 mi away
0.07 MGD
West Concord · 12 mi away
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Nerstrand · 14 mi away
0.01 MGD
Bellchester · 14 mi away
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Dennison · 15 mi away
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Wanamingo: 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 November 6, 2025.