Don River and Central Waterfront & Connected Projects

Rank 2022


Industry Sector: Water

Project Type: Water Wastewater

Project Value: $3 billion

Funding Source: Public

Municipal Funding: $3 billion

Province: Ontario

City / Region: Toronto

Estimated End Date of Substantial Completion: 2038

The Don River and Central Waterfront Wet Wester Flow System & connected Projects is a 25-year program aimed at improving water quality in Toronto’s Lower Don River, Taylor-Massey Creek, and the Inner Harbour. 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 25-year 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 overflows out of our waterways through the upgrading of technology and capacity to capture, transport and treat it. The project is comprised of an integrated system of tunnels, storage shafts, a high-rate treatment facility and wastewater treatment plant upgrades. Construction began in 2018 and projected completion is 2038. The Program is made up of several individual projects that will work together, including the Don River and Central Waterfront Wet Weather Flow System, the Ashbridges Bay Treatment Plant (ABTP) Integrated Pumping Station, ABTP UV Disinfection facility, ABTP Landform and High-rate treatment facility and ABTP Outfall. Construction of the Coxwell Bypass Tunnel is scheduled for completion in 2023. The Ashbridges Bay Landform Project, a joint initiative between the City and the Toronto Region Conservation Authority (TRCA), as well as projects at the Ashbridges Bay Treatment Plant (ABTP) are all well underway. These include the Integrated Pumping Station, the Landform Project, the ABTP UV Disinfection facility and the ABTP Outfall.

Project Owner: City of Toronto

P3 Team Members/Project Team: Don River and Central Waterfront Wet Weather Flow System (DR&CW WWF System): • Coxwell bypass (stage 1): Black & Veatch Canada (consultants); North Tunnel Constructors (contractor) • Inner Harbour West Tunnel: Hatch/AECOM (consultant) • Integrated Pumping Station (IPS): Black & Veatch Canada (consultants); Strabag Canada (contractor-contract 2) • Ashbridges Bay Landform Project: (TRCA) Toronto and Region Conservation Authority (designer with Shoreplan Engineering); TRCA (constructor of landform) • UV (Ultraviolet) Disinfection Facility: AECOM (consultants); Graham (contractor) • Outfall: Hatch/Jacobs and Baird (consultants); (SAJV) Southland Astaldi Joint Venture (contractor)

2022 Rank: 25

2021 Rank: 31

2020 Rank: 28

2019 Rank: 25


Platinum Elite (20+ Projects)
Platinum (10-19 Projects)
Gold (6-9 Projects)
Silver (3-5 Projects)
Bronze (1-2 Projects)