City Of Superior Wastewater Div. Of Public Works
51 East First Street, Superior, WI 54880 · 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. It discharges under NPDES permit WI0025593 (expired), which expires in March 2024, with 8 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at City Of Superior Wastewater Div. Of Public Works.
Available with a free Klarifi account
See the full treatment train at City Of Superior Wastewater Div. Of Public Works: structures, unit processes and planned upgrades, with exact unit counts.
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.
EPA enforcement history
Federal civil enforcement cases, compliance inspections and informal actions recorded for City Of Superior Wastewater Div. Of Public Works in EPA's ICIS system.
- Formal actions
- 0
- none on record
- EPA inspections
- 1
- none on record
No formal federal enforcement case is on record for this plant.
Full case history with a free Klarifi account
Every action against City Of Superior Wastewater Div. Of Public Works with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
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
—
Superior · 6 mi away
0.0024 MGD
Poplar · 18 mi away
0.05 MGD
Port Wing · 32 mi away
0.03 MGD
Herbster · 38 mi away
0.03 MGD
Drummond · 47 mi away
—
Cornucopia · 48 mi away
0.04 MGD
Grand View · 52 mi away
—
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 October 26, 2026; facility record last updated March 1, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Significant industrial user · WWTP · all terms