Southern Clinton Co WWTP
De Witt, MI · Clinton County · Publicly Owned Treatment Works
- Average flow
- 2.05 MGD
- Design flow
- —
- NPDES permit
- MI0021008
- Effective
- Permit expires
- October 2027
- Population served
- 18,035
- CWNS 2022
Southern Clinton Co WWTP is a publicly owned wastewater treatment works in De Witt, Clinton County, Michigan treating an average of 2.05 million gallons per day, serving about 18,035 residents. Treatment on site includes biogas silos. It discharges under NPDES permit MI0021008 (effective), which expires in October 2027, with 30 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Biogas silos
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Compliance snapshot (last 3 years)
- Total violations
- 30
- Effluent violations
- 3
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
3 verified contacts for Southern Clinton Co WWTP, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Southern Clinton Co WWTP, plus the full compliance history and discharge data.
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Lansing · 5 mi away
10.06 MGD
Lansing · 6 mi away
3.87 MGD
East Lansing · 8 mi away
9.13 MGD
Grand Ledge · 9 mi away
0.77 MGD
Dimondale · 12 mi away
0.17 MGD
Holt · 14 mi away
1.85 MGD
Fowler · 14 mi away
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Potterville · 16 mi away
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Southern Clinton Co 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 July 25, 2026.