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City services in the event of a Canada Post work stoppage

Canada Day – Tuesday, July 1. View holiday hours for City of Winnipeg facilities and services.

 Plan your next trip on our new bus network

Canada Day – Tuesday, July 1. View holiday hours for City of Winnipeg facilities and services.

City services in the event of a Canada Post work stoppage

Water and Waste Department

Armstrong Sewer Separation Project

  • Details
  • Map
  • Documents

Details

The City of Winnipeg is changing the existing combined sewer system in order to alleviate basement flooding and reduce the number of combined sewer overflows from the Armstrong sewer district.

The Armstrong Combined Sewer Relief Works Conceptual Study was completed as part of the 2019 Combined Sewer Overflow (CSO) Master Plan. The study determined that the current Level of Service (LOS) for the district’s combined sewer capacity was below the five-year return period design storm.

In 2024, the Armstrong Combined Sewer District Preliminary Design Project proposed a hybrid sewer separation approach, separating wastewater from land drainage. This involves construction of new land drainage sewers (LDS) and wastewater sewers (WWS) in the Armstrong sewer district while optimizing existing sewer infrastructure to improve LOS. The proposed solutions are currently under review in the detailed design phase to assess their feasibility. The works are planned to be carried out over a number of years, requiring approximately 8 construction contracts.

Green infrastructure solutions will also be incorporated into the design. The proposed solution includes the construction of a new Bioretention Facility located north of Leila Avenue and west of McGregor Street, and the green streetscapes along Leila Avenue.

Construction of combined sewer overflow and basement flood relief works in the Armstrong combined sewer district is planned to commence in 2026 with Contract 1. Residents who are directly impacted by current combined sewer separation projects should receive a Water and Waste Notice.

Map

Documents

None

Last updated: June 26, 2025

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