Capac Wwsl
750 Hill Street, Capac, MI 48014 · St. Clair County · Publicly Owned Treatment Works
- Average flow
- 1.61 MGD
- Design flow
- —
- NPDES permit
- MIG580271
- Effective
- Permit expires
- April 2029
- Population served
- 2,179
- CWNS 2022
Capac Wwsl is a publicly owned wastewater treatment plant in Capac, St. Clair County, Michigan treating an average of 1.61 million gallons per day, serving about 2,179 residents. It discharges under NPDES permit MIG580271 (effective), which expires in April 2029, with 10 recorded violations in the last three years.
Treatment technology
Treatment structures and unit processes at Capac Wwsl.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 10
- 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 Capac Wwsl.
No verified contacts on file yet
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Emmett · 9 mi away
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Yale · 10 mi away
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Memphis · 11 mi away
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Armada · 12 mi away
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Dryden · 12 mi away
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Romeo · 14 mi away
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Capac 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 May 19, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · FOG · Equalization tank · all terms