1020 Lincolnway W, Mishawaka, IN 46544 · St. Joseph County · Publicly Owned Treatment Works
Mishawaka Wastewater Treatment Plant is a publicly owned wastewater treatment works in Mishawaka, St. Joseph County, Indiana treating an average of 12.29 million gallons per day against a permitted design capacity of 20 MGD, serving about 49,515 residents. It discharges under NPDES permit IN0025640 (effective), which expires in April 2027, with 2 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in May 2014.
2 treatment structures and unit processes identified at Mishawaka Wastewater Treatment Plant.
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See the full treatment train at Mishawaka Wastewater Treatment Plant: structures, unit processes and planned upgrades, with exact unit counts.
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Federal civil enforcement cases, compliance inspections and informal actions recorded for Mishawaka Wastewater Treatment Plant in EPA's ICIS system.
Latest case · May 2014
City of Mishawaka
Judicial case · CWA, NPDES Permit Violations · Final Order Entered · Penalty $28,000 · Compliance actions $132M
Source: EPA ECHO, civil enforcement case 05-2003-0398.
Full case history with a free Klarifi account
Every action against Mishawaka Wastewater Treatment Plant with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
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.
Lakeville · 10 mi away
0.27 MGD
Wakarusa · 12 mi away
0.51 MGD
North Liberty · 15 mi away
0.13 MGD
Bremen · 15 mi away
0.15 MGD
Lapaz · 18 mi away
0.06 MGD
Goshen · 18 mi away
3.42 MGD
Nappanee · 18 mi away
2.57 MGD
Bristol · 19 mi away
0.37 MGD
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 5, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Ozonation · Activated sludge · all terms