Dennison WWTP
County Road 31, Dennison, MN 55018 · Goodhue County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 0.03 MGD
- NPDES permit
- MN0022195
- Expired
- Permit expires
- June 2024
- Population served
- 192
- CWNS 2022
Dennison WWTP is a publicly owned wastewater treatment works in Dennison, Goodhue County, Minnesota, serving about 192 residents. It discharges under NPDES permit MN0022195 (expired), which expires in June 2024, with 6 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Dennison WWTP.
Available with a free Klarifi account
See the full treatment train at Dennison WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 6
- 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 Dennison WWTP.
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Nearby wastewater treatment plants in Minnesota
Nerstrand · 4 mi away
0.01 MGD
Northfield · 7 mi away
1.86 MGD
Kenyon · 9 mi away
0.18 MGD
Cannon Falls · 11 mi away
0.26 MGD
Faribault · 12 mi away
—
Wanamingo · 15 mi away
0.12 MGD
Hampton · 15 mi away
—
Medford · 18 mi away
0.08 MGD
Dennison 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 March 12, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Activated sludge · Oxidation ditch · all terms