Mishawaka Wastewater Treatment Plant
Mishawaka, IN · St. Joseph County · Publicly Owned Treatment Works
- Average flow
- 9.43 MGD
- Design flow
- 20 MGD
- NPDES permit
- IN0025640
- Effective
- Permit expires
- April 2027
- Population served
- 49,515
- CWNS 2022
Mishawaka Wastewater Treatment Plant is a publicly owned wastewater treatment works in Mishawaka, St. Joseph County, Indiana treating an average of 9.43 million gallons per day against a permitted design capacity of 20 MGD, serving about 49,515 residents. Treatment on site includes clarifiers, biogas silos. It discharges under NPDES permit IN0025640 (effective), which expires in April 2027, with 2 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
- 2
- Effluent violations
- 2
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
26 verified contacts for Mishawaka Wastewater Treatment Plant, with validated emails and direct phone numbers.
Unlock 26 verified contacts (23 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Mishawaka Wastewater Treatment Plant, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Indiana
South Bend · 6 mi away
23.29 MGD
Lakeville · 10 mi away
0.05 MGD
Elkhart · 10 mi away
9.19 MGD
Wakarusa · 12 mi away
0.32 MGD
North Liberty · 15 mi away
0.09 MGD
Bremen · 15 mi away
0.06 MGD
Lapaz · 18 mi away
0.06 MGD
Goshen · 18 mi away
3.1 MGD
Mishawaka Wastewater Treatment Plant: 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 5, 2025.