Wednesday, October 22, 2025
Jean R. Marcotte Wastewater Treatment Plant
Province: Quebec
City/Region: Montreal
17
Current Rank
Project End: 2025
Project Amount: $360 Million
Industry Sector: Wastewater
Funding Source: Public
LEED Status: N/A
| Year | Rank |
|---|---|
| 2024 | 16 |
About The Project
WORK AT the Jean-R.-Marcotte treatment station is underway to enable wastewater treatment through ozonation—a process that injects ozone at the end of the treatment cycle. This environmentally advantageous solution requires several key infrastructure upgrades, which will be completed in phases to support full implementation by 2025.
To measure and manage runoff impacts, a study analyzed data from the past 10 years. The findings suggest that the volume of water potentially discharged into the St. Lawrence would be six times lower per hour than during the 2015 construction period. The runoff would primarily consist of rainwater, mixed with a small portion of wastewater.
The treatment station features an integrated control system that prioritizes runoff sites. In the
event of flooding, water will be directed to areas of the river with the least potential impact on human and aquatic health.
Project Owner: City of Montreal
Other Key Players: ABB (Process Automation), EXP, AECOM (Engineer, Consulting)
Key Players
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