Marine City WWTP
Marine City, MI · Saint Clair County · Publicly Owned Treatment Works
- Average flow
- 0.74 MGD
- Design flow
- —
- NPDES permit
- MI0020893
- Effective
- Permit expires
- October 2028
- Population served
- 7,861
- CWNS 2022
Marine City WWTP is a publicly owned wastewater treatment works in Marine City, Saint Clair County, Michigan treating an average of 0.74 million gallons per day, serving about 7,861 residents. Treatment on site includes clarifiers, carrousels / oxidation ditches, biogas silos. It discharges under NPDES permit MI0020893 (effective), which expires in October 2028, with 9 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 9
- Effluent violations
- 9
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
12 verified contacts for Marine City WWTP, with validated emails and direct phone numbers.
Unlock 12 verified contacts (9 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Marine City WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Michigan
East China · 4 mi away
0.35 MGD
Algonac · 6 mi away
1.35 MGD
St Clair · 8 mi away
0.72 MGD
New Baltimore · 13 mi away
0.83 MGD
Marysville · 14 mi away
1.5 MGD
Memphis · 19 mi away
—
Port Huron · 19 mi away
6.03 MGD
Mount Clemens · 20 mi away
3.06 MGD
Marine City 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 September 11, 2026; facility record last updated May 19, 2025.