Top Ten Pre-Bid Water and Sewer Projects in Ontario: A Comprehensive Overview

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Explore the leading pre-bid water and sewer projects in Ontario, highlighting key details and financial implications.

As of July 21, 2026, Ontario is witnessing significant investment in its water and sewer infrastructure, with ten major pre-bid projects leading the charge. These projects, valued at hundreds of millions of Canadian dollars, aim to enhance the region's wastewater treatment capabilities and water supply systems, reflecting an ongoing commitment to public health and environmental sustainability.
At the forefront is the New South Niagara Falls Wastewater Treatment Plant and Outfall, a monumental undertaking with a project value of CAD 400 million. This civil project is currently in the design phase and is set to construct a new facility to manage wastewater efficiently in Niagara Falls, Ontario.
Equally significant is the North Plant Secondary Treatment Upgrades at the Humber Treatment Plant in Toronto, also valued at CAD 400 million. The City of Toronto is taking a proactive approach by engaging a qualified engineering consultant to oversee the preliminary and detailed design phases, permitting processes, and construction services necessary for these upgrades, which are critical for the city’s wastewater management.
In Whitby, the Water Supply Plant Expansion Project, with a budget of CAD 200 million, involves demolition and site work as part of its expansion efforts. This project is crucial for improving the municipality's water supply infrastructure.
Mississauga is also set to benefit from a new reservoir at the Arthur P. Kennedy Water Treatment Plant, with a projected value of CAD 90 million. Although specific details about the project type and sector are not fully disclosed, its contribution to local water management is anticipated to be substantial.
Hamilton's Lower Centennial Parkway Trunked Sanitary Sewer project, valued at CAD 83 million, aims to enhance the sanitary sewer system in the area, further emphasizing the importance of robust sewage management in urban settings.
Meanwhile, the Kingston Inner Harbour Sediment Management Project is estimated at CAD 71.4 million. This initiative will play a pivotal role in maintaining the environmental integrity of the harbor, ensuring that sediment levels are appropriately managed.
In River Valley, the Lively Walden Wastewater Treatment Plant Upgrades and Expansion project, with a value of CAD 70 million, is poised to enhance wastewater processing capabilities in the area. Similarly, the Meaford New Wastewater Treatment Plant, valued at CAD 61.5 million, underscores the region's ongoing efforts to improve wastewater management.
Further down the list, Hamilton's Stone Church Road Feedermain Project is set at CAD 53 million, while the County Road 22 Sanitary Sewer Expansion Project is valued at CAD 50 million. These projects are essential for maintaining and upgrading the infrastructure that supports the growing population and urban development in these areas.
Each of these projects reflects a strategic approach to managing Ontario's water and sewage systems, highlighting the province's commitment to infrastructure development and environmental stewardship. As these projects move forward, they promise to create jobs and stimulate local economies while ensuring the delivery of essential public services.

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