Otter Lake WWTP
6159 Payne Street, Otter Lake, MI 48464 · Lapeer County · Publicly Owned Treatment Works
- Average flow
- 0.01 MGD
- Design flow
- —
- NPDES permit
- MI0056979
- Effective
- Permit expires
- October 2027
- Population served
- —
- CWNS 2022
Otter Lake WWTP is a publicly owned wastewater treatment works in Otter Lake, Lapeer County, Michigan treating an average of 0.01 million gallons per day. It discharges under NPDES permit MI0056979 (effective), which expires in October 2027, with 14 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at Otter Lake WWTP.
Available with a free Klarifi account
See the full treatment train at Otter Lake WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 14
- Effluent violations
- 10
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Otter Lake WWTP.
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Nearby wastewater treatment plants in Michigan
Millington · 5 mi away
—
Columbiaville · 5 mi away
0.47 MGD
Otisville · 5 mi away
0.08 MGD
Vassar · 12 mi away
0.48 MGD
Lapeer · 13 mi away
1.17 MGD
North Branch · 13 mi away
0.89 MGD
North Branch · 14 mi away
0.89 MGD
Lapeer · 15 mi away
0.47 MGD
Otter Lake 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 19, 2026; facility record last updated May 20, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Activated sludge · Oxidation ditch · all terms