Imlay City WWTP
530 E First St, Imlay City, MI 48444 · Lapeer County · Publicly Owned Treatment Works
- Average flow
- 0.34 MGD
- Design flow
- —
- NPDES permit
- MI0023167
- Effective
- Permit expires
- October 2028
- Population served
- 3,894
- CWNS 2022
Imlay City WWTP is a publicly owned wastewater treatment works in Imlay City, Lapeer County, Michigan treating an average of 0.34 million gallons per day, serving about 3,894 residents. It discharges under NPDES permit MI0023167 (effective), which expires in October 2028, with 3 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at Imlay City WWTP.
Available with a free Klarifi account
See the full treatment train at Imlay City WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 3
- Effluent violations
- 3
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Capital improvement projects in Imlay City
Imlay City's capital improvement plan lists 11 water, sewer and wastewater line items worth $6M starting 2024–2029. The largest budgeted items are shown here.
All water and sewer capital projects in Imlay City →
| Project | Budget | Years |
|---|---|---|
| Fourth Street (Sewer Portion) | $1,000,000 | 2024–2025 |
| Lead Service Lines (Water Portion) | $1,000,000 | 2025–2026 |
| Fourth Street (Water Portion) | $1,000,000 | 2024–2025 |
| S. Almont Ave Water Main (Water Portion) | $700,000 | 2025–2026 |
| E. Second Street (Water Portion) | $500,000 | 2029–2030 |
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
1 verified contact for Imlay City WWTP, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Imlay City WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Michigan
Dryden · 7 mi away
0.98 MGD
Almont · 7 mi away
0.35 MGD
Capac · 7 mi away
1.61 MGD
Metamora · 12 mi away
0.45 MGD
Lapeer · 12 mi away
1.17 MGD
Lapeer · 14 mi away
0.47 MGD
Yale · 15 mi away
—
North Branch · 15 mi away
0.89 MGD
Imlay 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 October 26, 2026; facility record last updated March 6, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · WWTP · Biosolids · all terms