Sault Ste. Marie Wastewater Treatment Plant
1171 E Portage Ave, Sault Sainte Marie, MI 49783 · Chippewa County · Publicly Owned Treatment Works
- Average flow
- 3.04 MGD
- Design flow
- —
- NPDES permit
- MI0024058
- Administratively continued
- Permit expires
- October 2025
- Population served
- 14,599
- CWNS 2022
Sault Ste. Marie Wastewater Treatment Plant is a publicly owned wastewater treatment works in Sault Sainte Marie, Chippewa County, Michigan treating an average of 3.04 million gallons per day, serving about 14,599 residents. It discharges under NPDES permit MI0024058 (administratively continued), which expires in October 2025, with 24 recorded violations in the last three years. EPA has recorded 2 formal enforcement actions naming the plant, the latest in April 2020.
Treatment technology
3 treatment structures and unit processes identified at Sault Ste. Marie Wastewater Treatment Plant.
Available with a free Klarifi account
See the full treatment train at Sault Ste. Marie Wastewater Treatment Plant: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 24
- Effluent violations
- 22
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 Sault Ste. Marie Wastewater Treatment Plant in EPA's ICIS system.
- Formal actions
- 2
- 1 since FY2020
- Penalties assessed
- $11,200
- all cases
- EPA inspections
- 2
- latest Oct 2018
Latest case · Apr 2020
SAULT STE MARIE WTP-RMP ESA
Administrative order · CAA, Prevention of Accidental Release/Risk Management Plans (RMPs) · Final Order With Penalty · Penalty $11,200
Source: EPA ECHO, civil enforcement case 05-2020-7550.
Full case history with a free Klarifi account
Every action against Sault Ste. Marie Wastewater Treatment Plant with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Capital improvement projects in Sault Sainte Marie
Sault Sainte Marie's capital improvement plan lists 32 water, sewer and wastewater line items worth $5M starting 2024–2029. The largest budgeted items are shown here.
All water and sewer capital projects in Sault Sainte Marie →
| Project | Budget | Years |
|---|---|---|
| 25th Ave Water Tower Blast and Paint | $500,000 | 2026–2027 |
| Excavator / Dump Truck / Trailer Combination | $500,000 | 2025–2026 |
| West 25th Ave Force Main Lining Project | $500,000 | 2024–2025 |
| Manhole Structure Lining Project | $300,000 | 2024–2030 |
| Fire Hydrant Replacements | $300,000 | 2025–2031 |
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 Sault Ste. Marie Wastewater Treatment Plant, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Sault Ste. Marie Wastewater Treatment Plant, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Michigan
Brimley · 15 mi away
0.91 MGD
Kincheloe · 17 mi away
0.45 MGD
Rudyard · 23 mi away
1.1 MGD
Moran · 42 mi away
1 MGD
Saint Ignace · 45 mi away
0.71 MGD
Mackinac Island · 46 mi away
0.41 MGD
Mackinaw City · 54 mi away
0.27 MGD
Newberry · 58 mi away
0.64 MGD
Sault Ste. Marie Wastewater Treatment Plant: 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 April 4, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Activated sludge · Oxidation ditch · all terms