City of St. Thomas

To support ongoing and future growth, the City is advancing the development of the new Dalewood Water Reclamation Facility (DWRF). This critical infrastructure will significantly increase wastewater treatment capacity, enhance environmental sustainability, and unlock major opportunities for future development within the city and surrounding region.

The project is being delivered through a Progressive Design-Build (PDB) model, which promotes early and continuous collaboration between the City, designers, and contractors. This approach improves project control, enhances constructability, increases cost certainty, and reduces overall risk.

• The City selected a contractor through a rigorous evaluation, focusing on project understanding, risk management, experience, and commitment to accelerating the schedule.
• The project has advanced significantly, with floor plans and 3D renderings completed to 30%, and key equipment vendors engaged.
• Risk mitigation strategies are underway, and cost estimates have been received; the project is now in the value engineering phase to optimize cost and scope.

The new Dalewood Water Reclamation Facility will feature a modern, multi-stage wastewater treatment process designed for efficiency, performance, and regulatory compliance. The treatment process will include:

• Screening and Grit removal at the Headworks
• Primary clarification
• Aeration tanks
• Secondary clarification
• Tertiary filtration
• Ultraviolet (UV) disinfection
• Lystek biosolids treatment

All treatment stages will utilize advanced equipment and technologies to ensure high-quality effluent and environmental protection. The treatment process buildings will be interconnected via an underground tunnel to support efficient operations and maintenance access.

The facility will also include essential supporting infrastructure, such as:

• Administration Building
• Maintenance Building
• Storage Building

Headworks Building:

Primary Clarifier:


Aeration Tank and Blower Building:



Secondary Clarifier:



Tertiary Filtration and UV Building:



Lystek Biosolid Treatment Buildings:



Administrative Building:



Maintenance Building:



Storage Building:

The Dalewood WRF is a vital investment in the City’s infrastructure that will:

• Support long-term population and economic growth
• Improve wastewater treatment performance
• Enhance environmental sustainability

The City will continue to provide updates as the project progresses through detailed design, construction, and commissioning.

If you have comments, questions, or require further information please contact the below:

Patrick Anckaert, P.Eng.
Senior Project Manager

City of St. Thomas
545 Talbot Street, PO Box 520
St. Thomas, ON   N5P 3V7

Tel:  226-378-3671
Email:  [email protected]