Toronto is embarking on the largest and most significant stormwater management program in the city’s history. With an overall budget of more than $3 billion, this program will greatly improve the water quality in the Lower Don River, Taylor-Massey Creek and along Toronto’s Inner Harbour by keeping combined sewer overflow out of our waterways through the upgrading of technology and capacity to capture, transport and treat it. Construction is well underway. More information about each individual project can be found on the project overview page.
In 1987, the International Joint Commission identified Toronto’s waterfront as one of 43 polluted “Areas of Concern” in the Great Lakes Basin, largely because of impaired water quality and sediment conditions in the Don River and Inner Harbour.
Water quality in the Lower Don River, Central Waterfront and Taylor-Massey Creek is degraded due to:
The Program is the largest and most significant water quality improvement undertaking in the City of Toronto.
After years of study and design work, construction began in 2018. Once fully implemented, the Program will virtually eliminate the release of combined sewer overflows into the Lower Don River, Taylor-Massey Creek and Toronto’s Inner Harbour. It will also provide erosion and sediment control in Ashbridges Bay.
When fully implemented, the project will:
The Program in place today is based on extensive research, analysis, input from the public, agencies, and other stakeholders. This includes:
Don River and Central Watefront. Click on map to enlarge.
The program will greatly improve the water quality in the Lower Don River, Taylor-Massey Creek and along Toronto’s Inner Harbour.
The three tunnels capture combined sewer overflow (stormwater mixed with raw sewage), thereby keeping it out of:
The tunnels capture the combined sewer overflow and transport it down to Ashbridges Bay Treatment Plant – where it will be:
Don River and Central Waterfront short video.
As with all construction projects, disruptions to the local community will occur. Every effort will be made to keep residents informed and disruptions to a minimum. Once construction is completed, sites will be restored and enhanced in consultation with the local community.
Construction at Ashbridges Bay Treatment Plant
Construction at Keating Railyard
Construction at Bayview Avenue and Bloor Street East
Construction at North Toronto Treatment Plant
Construction at Coxwell Ravine Park
Construction at Riverdale Park West (at River Street and Gerrard Street East)
Construction at Bayview Avenue and Rosedale Valley Road
Construction at Mount Stephen Street
Construction of a Underground Shaft at Bloor-Bayview Off-Ramp
Construction at Lake Shore Boulevard East and Carlaw Avenue
Construction to an existing outfall into the Don River
Site Investigations Along Waterfront
Main Sewage Treatment Playground is located at 1091 Eastern Avenue.
Tubs & Gee Gage Rugby Field Relocation and New Parking Lot Construction