Greenfield WWTP
6390 Town Hall Dr, Greenfield, MN 55357 · Hennepin County · Publicly Owned Treatment Works
- Average flow
- 0.01 MGD
- Design flow
- 0.1 MGD
- NPDES permit
- MN0063762
- Effective
- Permit expires
- June 2031
- Population served
- —
- CWNS 2022
Greenfield WWTP is a publicly owned wastewater treatment works in Greenfield, Hennepin County, Minnesota treating an average of 0.01 million gallons per day against a permitted design capacity of 0.1 MGD. It discharges under NPDES permit MN0063762 (effective), which expires in June 2031, with 1 recorded violation in the last three years.
Treatment technology
Treatment structures and unit processes at Greenfield WWTP.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 1
- Effluent violations
- 1
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Greenfield WWTP.
No verified contacts on file yet
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Nearby wastewater treatment plants in Minnesota
Rockford · 1 mi away
0.29 MGD
Delano · 3 mi away
0.57 MGD
Buffalo · 8 mi away
1.08 MGD
Montrose · 9 mi away
0.33 MGD
Saint Michael · 9 mi away
1.03 MGD
Watertown · 9 mi away
0.33 MGD
Rogers · 12 mi away
1.16 MGD
Albertville · 12 mi away
0.56 MGD
Greenfield 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 September 24, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biosolids · Filter press · all terms