To ensure all residents and businesses continue to have reliable access to high-quality drinking water, Halton Region is initiating an Addendum to the Municipal Class Environmental Assessment (MCEA) Study completed in 2012 for the Burloak Water Treatment Plant (WTP) Phase 2 Expansion, in the Town of Oakville.

To meet future demands and support growth into 2031, the 2012 MCEA Study set out to increase water treatment capacity at the Burloak WTP from 55,000 m³/day to 165,000 m³/day, as identified in the 2011 Sustainable Halton Water and Wastewater Master Plan.

The MCEA process requires renewal for studies when a project has not commenced within ten years of its completion. This Addendum will re-evaluate the pre-treatment and residuals treatment processes presented in the 2012 MCEA Study, in the current environmental setting.

During this study, the project team will:

• evaluate alternative pre-treatment and residuals treatment solutions;
• evaluate alternative design concepts for the pre-treatment and residuals treatment solutions;
• assess the impacts and identify mitigation measures;
• consult the public, review agencies and Indigenous communities; and
• prepare the Addendum to the Environmental Study Report for review and approval.

This study will be carried out in accordance with Schedule C of the Municipal Class Environmental Assessment (MCEA), (October 2000, as amended 2007, 2011, 2015, 2023 and 2024), which is an approved process under the Ontario Environmental Assessment Act.

Consultation with the public, review agencies and Indigenous Communities is a key element of the MCEA process. Upon completion of the MCEA study, an Addendum to the Environmental Study Report will be prepared and placed on the public record for a minimum of 30 days. The document will detail the planning and consultation process and the preferred alternative for the water treatment plant.

Project Documents:

• Addendum to the Environmental Study Report for the Burloak Water Treatment Plant Phase 2 Expansion Municipal Class Environmental Assessment Study – September 2025
• Notice of Addendum – Addendum to the Burloak Water Treatment Plant Phase 2 Expansion – September 2025
• Notice of Commencement – Addendum to the Burloak Water Treatment Plant Phase 2 Expansion – December 2024
• Notice of Study Completion – Burloak Water Purification Plant Phase 2 – May 2012 (PDF file)
• Environmental Study Report – Burloak Water Purification Plant Phase 2 Expansion – May 2012 (PDF file)
  • Appendix A – Agency Consultation (PDF file)
  • Appendix B – Public Consultation (PDF file)
  • Appendix C – Project Notices (PDF file)
  • Appendix D – Sheldon Creek – East Branch Assessment Report (PDF file)
  • Appendix E – Sheldon Creek – East Branch Fish Habitat Conditions Technical Memorandum (PDF file)
  • Appendix F – Burloak Water Purification Plant – Existing Permits and Approvals (PDF file)
  • Appendix G – Preliminary Screening Detailed Results (PDF file)