Mapleton WWTP
Mapleton, MN · Blue Earth County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 0.41 MGD
- NPDES permit
- MNG585089
- Effective
- Permit expires
- November 2028
- Population served
- —
- CWNS 2022
Mapleton WWTP is a publicly owned wastewater treatment works in Mapleton, Blue Earth County, Minnesota. It discharges under NPDES permit MNG585089 (effective), which expires in November 2028, with 11 recorded violations in the last three years.
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
- 11
- Effluent violations
- 2
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Mapleton WWTP.
No verified contacts on file yet
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Nearby wastewater treatment plants in Minnesota
Pemberton · 8 mi away
—
Amboy · 10 mi away
0.15 MGD
Vernon Center · 11 mi away
0.06 MGD
Waldorf · 12 mi away
—
Saint Clair · 12 mi away
0.06 MGD
Delavan · 12 mi away
—
Wells · 16 mi away
—
Winnebago · 16 mi away
0.22 MGD
Mapleton 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 January 14, 2025.