Case Study


April 25, 2020

Toronto, ON

Pre-construction has started on the landmark redevelopment of Mirvish Village. The redevelopment will give way to new residential rental towers, retail storefronts, new pedestrian lanes and a permanent public market.

Mirvish Village is a modern, thoughtful and state-of-the-art development by Westbank Corp and once complete will be one of the most sustainable new developments in the City of Toronto – targeting the LEED Platinum certification and Tier 2 of the Toronto Green Standard.

Mirvish Village embraces a variety of innovative features to achieve sustainability goals including rainwater harvesting and reuse system to meet LEED, Toronto Green Standard, and provincial and municipal stormwater management requirements. Rainwater collected from the roof area will be treated and reused for non-potable applications which not only will help save potable water but will also help to minimize stormwater runoff and reduce the burden on city sewers.

Another interesting feature is the groundwater treatment system which collects water from the weeping tiles and treats the groundwater to meet Toronto Water Bylaw Limits for Sanitary Discharge – a challenge that can be, at times, hard to meet in the City of Toronto


  • Two packaged rainwater harvesting systems for the east and west buildings, and a groundwater treatment system for the east building.
  • Captures 5mm of stormwater for each rainfall event.
  • Rainwater reused across the building for toilet flushing, irrigation and car washing.
  • Consists of cistern accessories, day tanks, a rainwater treatment system and a non-potable booster pump packaged skid.