Manitowoc WWTP
Manitowoc, WI · Manitowoc County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 15.5 MGD
- NPDES permit
- WI0024601
- Expired
- Permit expires
- March 2023
- Population served
- 34,500
- CWNS 2022
Manitowoc WWTP is a publicly owned wastewater treatment works in Manitowoc, Manitowoc County, Wisconsin, serving about 34,500 residents. Treatment on site includes clarifiers, biogas silos, biogas balloons. It discharges under NPDES permit WI0024601 (expired), which expires in March 2023, with 36 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
- 36
- Effluent violations
- 36
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
4 verified contacts for Manitowoc WWTP, with validated emails and direct phone numbers.
Unlock 4 verified contacts (1 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Manitowoc WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Wisconsin
Two Rivers · 6 mi away
—
Manitowoc · 6 mi away
0.0057 MGD
Cleveland · 11 mi away
0.12 MGD
St. Nazianz · 15 mi away
0.03 MGD
Maribel · 15 mi away
0.02 MGD
Reedsville · 15 mi away
0.005 MGD
Denmark · 20 mi away
0.46 MGD
Howards Grove · 20 mi away
0.23 MGD
Manitowoc 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 March 6, 2025.