City Of Superior Wastewater Div. Of Public Works
Superior, WI · Douglas County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 5 MGD
- NPDES permit
- WI0025593
- Expired
- Permit expires
- March 2024
- Population served
- 28,181
- CWNS 2022
City Of Superior Wastewater Div. Of Public Works is a publicly owned wastewater treatment works in Superior, Douglas County, Wisconsin, serving about 28,181 residents. Treatment on site includes clarifiers, biogas silos. It discharges under NPDES permit WI0025593 (expired), which expires in March 2024, with 8 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 8
- Effluent violations
- 8
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for City Of Superior Wastewater Div. Of Public Works, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at City Of Superior Wastewater Div. Of Public Works, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Wisconsin
Superior · 6 mi away
—
Poplar · 18 mi away
0.03 MGD
Port Wing · 32 mi away
0.02 MGD
Herbster · 38 mi away
—
Drummond · 47 mi away
0.02 MGD
Cornucopia · 48 mi away
—
Grand View · 52 mi away
0.0038 MGD
Washburn · 55 mi away
0.17 MGD
City Of Superior Wastewater Div. Of Public Works: 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 March 1, 2025.