Coleman Wwsl
Graham St, Coleman, MI 48618 · Midland County · Publicly Owned Treatment Works
- Average flow
- 1.51 MGD
- Design flow
- —
- NPDES permit
- MIG580367
- Administratively continued
- Permit expires
- April 2024
- Population served
- 1,259
- CWNS 2022
Coleman Wwsl is a publicly owned wastewater treatment plant in Coleman, Midland County, Michigan treating an average of 1.51 million gallons per day, serving about 1,259 residents. It discharges under NPDES permit MIG580367 (administratively continued), which expires in April 2024, with 6 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Coleman Wwsl.
Available with a free Klarifi account
See the full treatment train at Coleman Wwsl: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 6
- Effluent violations
- 6
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Coleman Wwsl.
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Nearby wastewater treatment plants in Michigan
Clare · 9 mi away
0.55 MGD
Rosebush · 11 mi away
—
Mt Pleasant · 13 mi away
1.25 MGD
Mount Pleasant · 13 mi away
0.26 MGD
Mount Pleasant · 14 mi away
2.26 MGD
Beaverton · 15 mi away
0.07 MGD
Gladwin · 15 mi away
0.8 MGD
Shepherd · 17 mi away
0.33 MGD
Coleman Wwsl: 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 19, 2026; facility record last updated September 28, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Activated sludge · Oxidation ditch · all terms