Construction of the Réseau Express Métropolitain (REM) station

This project will enable Montréal-Trudeau International Airport to expand its global reach and join the ranks of major airports that can benefit from a sustainable and efficient connection to their city center, for the benefit of travelers, employees and the community.

This mandate involves the management of water from underground construction and the excavation support required to build the new REM station.

Location Montréal-Pierre Elliott Trudeau International Airport
Year 2023
System capacity : 115 m3/h


  • The quality of water extracted from the site is variable and unpredictable, and must comply with specific and particularly restrictive criteria.
  • The absence of a dedicated, specialized water management operator requires the implementation of a simple, understandable treatment system and accessible technical support.
  • The space available for water treatment and settling is very limited due to the urban nature of the site.
  • Additive elements in the industrial waste water, such as foaming agents, hydrocarbons and concrete, add to the treatment challenges.


  • Water discharge maintained in compliance with Montreal Metropolitan Community environmental standards.
  • No construction site shutdown due to non-compliance of treated discharged water.
  • Savings on specialized operational labor costs.
  • Accelerated learning curve for site water treatment operations and improved overall performance.