Petoskey WWTP
1000 West Lake Street, Petoskey, MI 49770 · Emmet County · Publicly Owned Treatment Works
- Average flow
- 1.11 MGD
- Design flow
- —
- NPDES permit
- MI0023787
- Effective
- Permit expires
- October 2029
- Population served
- 3,889
- CWNS 2022
Petoskey WWTP is a publicly owned wastewater treatment works in Petoskey, Emmet County, Michigan treating an average of 1.11 million gallons per day, serving about 3,889 residents. It discharges under NPDES permit MI0023787 (effective), which expires in October 2029, with 3 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in September 2003.
Treatment technology
One treatment structure or unit process identified at Petoskey WWTP.
Available with a free Klarifi account
See the full treatment train at Petoskey 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.
EPA enforcement history
Federal civil enforcement cases, compliance inspections and informal actions recorded for Petoskey WWTP in EPA's ICIS system.
- Formal actions
- 1
- 0 since FY2020
- EPA inspections
- 0
- none on record
Latest case · Sep 2003
City of Petoskey
Administrative order · CWA, NPDES Permit Violations · Final Order Issued
EPA's description of the case:
“Permittee exceeded the final effluent discharge limitations at Outfall 001A.”
Source: EPA ECHO, civil enforcement case 05-2003-0387.
Full case history with a free Klarifi account
Every action against Petoskey WWTP with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Capital improvement projects in Petoskey
Petoskey's capital improvement plan lists 11 water, sewer and wastewater line items worth $8M starting 2025–2030. The largest budgeted items are shown here.
All water and sewer capital projects in Petoskey →
| Project | Budget | Years |
|---|---|---|
| Sanitary - Miscellaneous Sewer Main Spot Repairs and Upgrades | $1,400,000 | 2026–2030 |
| Water - Reconstruction and Miscellaneous Water Main Spot Repairs and Upgrades | $1,400,000 | 2027–2029 |
| Water - Miscellaneous Water Main Spot Repairs and Upgrades | $1,350,000 | 2026–2030 |
| Sanitary - Reconstruction and Miscellaneous Sanitary Main Spot Repairs and Upgrades | $1,200,000 | 2027–2029 |
| Water - Howard Street and Miscellaneous Water Main Spot Repairs and Upgrades | $839,000 | 2025–2025 |
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
5 verified contacts for Petoskey WWTP, with validated emails and direct phone numbers.
Unlock 5 verified contacts (2 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Petoskey WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Michigan
Boyne City · 11 mi away
0.54 MGD
Charlevoix · 15 mi away
0.37 MGD
Mackinaw City · 29 mi away
0.27 MGD
Bellaire · 30 mi away
0.24 MGD
Cheboygan · 31 mi away
1.5 MGD
Onaway · 36 mi away
0.56 MGD
Mackinac Island · 37 mi away
0.41 MGD
Saint Ignace · 38 mi away
0.71 MGD
Petoskey 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 January 27, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biological nutrient removal · Tertiary treatment · all terms