Mt Pleasant WWTP
1301 N Franklin St, Mount Pleasant, MI 48858 · Isabella County · Publicly Owned Treatment Works
- Average flow
- 2.26 MGD
- Design flow
- 4.14 MGD
- NPDES permit
- MI0023655
- Expired
- Permit expires
- March 2025
- Population served
- 38,184
- CWNS 2022
Mt Pleasant WWTP is a publicly owned wastewater treatment works in Mount Pleasant, Isabella County, Michigan treating an average of 2.26 million gallons per day against a permitted design capacity of 4.14 MGD, serving about 38,184 residents. It discharges under NPDES permit MI0023655 (expired), which expires in March 2025, with 18 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in July 2023.
Treatment technology
One treatment structure or unit process identified at Mt Pleasant WWTP.
Available with a free Klarifi account
See the full treatment train at Mt Pleasant WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 18
- Effluent violations
- 18
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 Mt Pleasant WWTP in EPA's ICIS system.
- Formal actions
- 1
- 0 since FY2020
- Compliance actions
- $1.2M
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Jul 2023
Mt Pleasant AOC
Administrative order · CWA, NPDES Permit Violations · Final Order No Penalty · Compliance actions $1.2M
EPA's description of the case:
“Final AOC regarding CWA Related effluent violations”
Source: EPA ECHO, civil enforcement case 05-2019-0331.
Full case history with a free Klarifi account
Every action against Mt Pleasant WWTP with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Capital improvement projects in Mount Pleasant
Mount Pleasant's capital improvement plan lists 70 water, sewer and wastewater line items worth $16M starting 2025–2030. The largest budgeted items are shown here.
All water and sewer capital projects in Mount Pleasant →
| Project | Budget | Years |
|---|---|---|
| Remove 10,000 Yds | $2,145,000 | 2025–2029 |
| Lime Residual Removal | $2,145,000 | 2025–2029 |
| Facility Improvements and Replacements | $1,278,000 | 2025–2030 |
| Distribution System Replacement | $1,008,000 | 2025–2030 |
| Lift Station Improvements and Replacements | $682,000 | 2025–2030 |
Full project details — scope, funding source, engineering consultant and the decision-makers behind each project — are available in Klarifi, along with similar wastewater capital projects in other cities.
Key contacts
26 verified contacts for Mt Pleasant WWTP, 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 Mt Pleasant WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Michigan
Mt Pleasant · 1 mi away
1.25 MGD
Mount Pleasant · 4 mi away
0.26 MGD
Rosebush · 5 mi away
—
Shepherd · 7 mi away
0.33 MGD
Coleman · 14 mi away
1.51 MGD
Clare · 15 mi away
0.55 MGD
St. Louis · 16 mi away
1.01 MGD
Alma · 17 mi away
1.52 MGD
Mt Pleasant 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 October 26, 2026; facility record last updated February 11, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biosolids · Filter press · all terms