Amboy WWTP
600 East Maine St, Amboy, MN 56010 · Blue Earth County · Publicly Owned Treatment Works
- Average flow
- 0.14 MGD
- Design flow
- 0.29 MGD
- NPDES permit
- MN0022624
- Administratively continued
- Permit expires
- July 2025
- Population served
- 535
- CWNS 2022
Amboy WWTP is a publicly owned wastewater treatment works in Amboy, Blue Earth County, Minnesota treating an average of 0.14 million gallons per day against a permitted design capacity of 0.29 MGD, serving about 535 residents. It discharges under NPDES permit MN0022624 (administratively continued), which expires in July 2025, with 48 recorded violations in the last three years.
Treatment technology
Treatment structures and unit processes at Amboy WWTP.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 48
- Effluent violations
- 48
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Amboy WWTP.
No verified contacts on file yet
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Nearby wastewater treatment plants in Minnesota
Vernon Center · 5 mi away
0.04 MGD
Winnebago · 8 mi away
0.66 MGD
Good Thunder · 9 mi away
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Delavan · 10 mi away
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Mapleton · 10 mi away
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Lewisville · 15 mi away
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Lake Crystal · 16 mi away
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Granada · 16 mi away
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Amboy 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 October 26, 2026; facility record last updated November 7, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Ozonation · Activated sludge · all terms