Milwaukee Metro Sew Dist Combi
Milwaukee, WI · Milwaukee County · Publicly Owned Treatment Works
- Average flow
- 95.1 MGD
- Design flow
- 123 MGD
- NPDES permit
- WI0036820
- Expired
- Permit expires
- March 2024
- Population served
- 531,068
- CWNS 2022
Milwaukee Metro Sew Dist Combi is a publicly owned wastewater treatment plant in Milwaukee, Milwaukee County, Wisconsin treating an average of 95.1 million gallons per day against a permitted design capacity of 123 MGD, serving about 531,068 residents. It discharges under NPDES permit WI0036820 (expired), which expires in March 2024, with 392 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 392
- Effluent violations
- 1
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
36 verified contacts for Milwaukee Metro Sew Dist Combi, with validated emails and direct phone numbers.
Unlock 36 verified contacts (33 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Milwaukee Metro Sew Dist Combi, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Wisconsin
South Milwaukee · 10 mi away
2.18 MGD
Brookfield · 13 mi away
8.95 MGD
Sussex · 17 mi away
2.57 MGD
Waukesha · 17 mi away
3.15 MGD
Cedarburg · 18 mi away
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Grafton · 19 mi away
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Wind Lake · 20 mi away
0.73 MGD
Sturtevant · 21 mi away
0.1 MGD
Milwaukee Metro Sew Dist Combi: 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 December 22, 2024.