Grosse Ile Twp WWTP
Grosse Ile, MI · Wayne County · Publicly Owned Treatment Works
- Average flow
- 1.4 MGD
- Design flow
- —
- NPDES permit
- MI0026191
- Effective
- Permit expires
- October 2027
- Population served
- 11,103
- CWNS 2022
Grosse Ile Twp WWTP is a publicly owned wastewater treatment works in Grosse Ile, Wayne County, Michigan treating an average of 1.4 million gallons per day, serving about 11,103 residents. Treatment on site includes clarifiers. It discharges under NPDES permit MI0026191 (effective), which expires in October 2027, with 11 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
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Compliance snapshot (last 3 years)
- Total violations
- 11
- Effluent violations
- 11
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Capital improvement projects in Grosse Ile
Grosse Ile's capital improvement plan lists 16 water, sewer and wastewater line items worth $8M starting 2024–2028. The largest budgeted items are shown here.
All water and sewer capital projects in Grosse Ile →
| Project | Budget | Years |
|---|---|---|
| 2024-25 Water Main Project (St. Clair, Notre Dame, Stratford/Wellington | $1,850,000 | 2024–2025 |
| Replace 4" and 6" Mains (locations TBD) | $1,815,500 | 2026–2030 |
| Lead Water Services (5% of 699 @ $7500 each) | $1,575,000 | 2024–2030 |
| Storm Sewer Replacement on Street Projects | $1,000,000 | 2024–2030 |
| Lead Water Service Line Investigation (EGLE Grant) | $600,000 | 2024–2025 |
Full project details — scope, funding source, engineering consultant and the decision-makers behind each project — are available in Klarifi, along with similar wastewater capital projects in other cities.
Key contacts
29 verified contacts for Grosse Ile Twp WWTP, with validated emails and direct phone numbers.
Unlock 29 verified contacts (26 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Grosse Ile Twp WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Michigan
Wyandotte · 4 mi away
16.88 MGD
Wyandotte · 4 mi away
26.9 MGD
Rockwood · 6 mi away
0.25 MGD
Newport · 11 mi away
0.52 MGD
Detroit · 11 mi away
349 MGD
Carleton · 12 mi away
0.23 MGD
Monroe · 19 mi away
8.5 MGD
Ypsilanti · 21 mi away
23.05 MGD
Grosse Ile Twp 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 20, 2025.