York Region Sewage Works Project
The Regional Municipalities of York and Durham are working together to carry out the York Region Sewage Works Project, a long-term wastewater infrastructure project across the Towns of East Gwillimbury, Newmarket, Aurora, Ajax and the Cities of Richmond Hill, Markham and Pickering.
As required by the Supporting Growth and Housing in York and Durham Regions Act, 2022, the York Region Sewage Works Project will increase the existing York Durham Sewage System, including new or expanded wastewater sewers, pumping stations and enhancements to the Duffin Creek Water Pollution Control Plant on the shore of Lake Ontario in the City of Pickering. Durham Region supports proposed work in the City of Pickering as part of the project.
The Act requires York Region and Durham Region to submit a Project Report outlining infrastructure components and costs, impacts to the environment and how those impacts will be mitigated.
The York Region Sewage Works Project Report has been submitted to the Minister of the Environment, Conservation and Parks for approval, in accordance with the Act.
Comments on the York Region Sewage Works Project Report can be submitted by Monday, December 4, 2023, to:
York Region Public Works
York Region Sewage Works Project
17250 Yonge Street
Newmarket, Ontario L3Y 6Z1
Phone: 1-877-464-9675 ext. 75124
Email: @email
Comments will be considered by York Region, Durham Region and the Minister of the Environment, Conservation and Parks during review and approval of the Project Report.
Project Report
Cover Page and Table of Contents
Chapter 1 Introduction and Background
Chapter 2 Confirmation and Description of Components
Chapter 3 Design Basis
Chapter 4 Infrastructure Located in East Gwillimbury
Chapter 5 Infrastructure Located in Newmarket and Aurora, Section 5.1 - 5.11
Chapter 5 Infrastructure Located in Newmarket and Aurora, Section 5.12 - 5.15
Chapter 6 Leslie Street Trunk Sewer and Yonge Street Sewer Rehabilitation
Chapter 7 Markham Collector Twinning
Chapter 8 Primary Trunk Twinning
Chapter 9 Duffin Creek Water Pollution Control Plant Expansion and Upgrades
Chapter 10 Duffin Creek Water Pollution Control Plant New Outfall
Chapter 11 Implementation Plan
Chapter 12 Conclusion
Appendix A Chapter 4 Drawings
Appendix B Chapter 5 Drawings
Appendix C Chapter 6 Drawings, CI-D019 – CI-D021
Appendix C Chapter 6 Drawings, CI-D022 – CI-D024
Appendix D Chapter 7 Drawings
Appendix E Chapter 8 Drawings
Indigenous Communities Consultation Interim Report
Interested Persons Consultation Interim Report
Indigenous Communities Consultation Interim Report Appendices
Interested Persons Consultation Interim Report Appendices
York Region Sewage Works Project Maps
York Region Sewage Works Project map showing the north York Durham Sewage System Expansion (YDSS)
York Region Sewage Works Project map showing the south York Durham Sewage System Expansion (YDSS)
York Region Sewage Works Project map showing the primary system expansion of the York Durham Sewage System (YDSS)
Accessible formats or communication supports are available upon request.
Supporting Growth and Housing in York and Durham Regions Act, 2022
On November 28, 2022, the Ontario government passed the Supporting Growth and Housing in York and Durham Regions Act, 2022.
The Act mandates York Region change from the previously proposed Lake Simcoe watershed solution, also known as Upper York Sewage Solutions, to a Lake Ontario solution that will pump, move and treat wastewater at the Duffin Creek Water Pollution Control Plant in Durham Region.
The Act requires York Region prepare a Project Report outlining:
- Infrastructure components
- Impacts to the environment and how those impacts will be mitigated
- Impacts to Aboriginal or treaty rights and how those impacts will be mitigated
- Approvals and permits required
Infrastructure components in the Project Report are exempt from the Environmental Assessment Act, 2023.
Sign up for project updates
Enter your contact information for updates on the York Region Sewage Works Project.
All interested persons will be notified by email when the Project Report is posted on York Region and Durham Region’s websites for review.
Resources
Public Notice – November 3, 2023 - Project Report available for public comment
Public Notice – July 20, 2023
Upper York Sewage Solutions
Duffin Creek
Water and Wastewater Construction Projects
Environmental Assessment Study
