Port Sanilac Wwsl
Aprox. 1/2 Mi. NW Of The Inter, Port Sanilac, MI 48469 · Sanilac County · Publicly Owned Treatment Works
- Average flow
- 1 MGD
- Design flow
- —
- NPDES permit
- MIG580359
- Effective
- Permit expires
- April 2029
- Population served
- 641
- CWNS 2022
Port Sanilac Wwsl is a publicly owned wastewater treatment plant in Port Sanilac, Sanilac County, Michigan treating an average of 1 million gallons per day, serving about 641 residents. It discharges under NPDES permit MIG580359 (effective), which expires in April 2029, with 17 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at Port Sanilac Wwsl.
Available with a free Klarifi account
See the full treatment train at Port Sanilac Wwsl: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 17
- Effluent violations
- 2
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Port Sanilac Wwsl.
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Croswell · 11 mi away
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Deckerville · 13 mi away
—
Sandusky · 13 mi away
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Peck · 17 mi away
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Forestville · 18 mi away
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Minden City · 20 mi away
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Port Sanilac 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 March 12, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Anaerobic digester · Lift station · all terms