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West Memorial Sanitary Trunk Catchment Area

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Ward 1 official website
News Release - West Memorial Sanitary Trunk Ahead of Schedule 
June 3, 2015
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I would like to thank the City’s Water Services’ Rob Spackman and his team for an outstanding job planning and executing the West Memorial Trunk Project. The project is currently under budget and ahead of schedule. The new estimated completion date is May 1, 2016, a five month reduction from the initial September 2016 timeline. As a result of your significant accomplishment on a major wastewater system that affected 10 communities in the NW, residents will be able to move into their homes and businesses will be able to open sooner than anticipated.


News Release - West Memorial Sanitary Trunk Update 

March 12, 2015

The Bowness Trunk project is proceeding nicely in Bowness/Shouldice.  The two river crossings along the Shouldice Athletic Park are completed and the contract is well in hand.  The second contract is underway with 3 of the 6 tunnelling shafts along the railroad tracks completed.  Once the shafts are completed, tunnelling will proceed.  The chambers and connections between the two projects and the existing system will be near the end of the project. 

Councillor Sutherland would like to thank the West Memorial Sanitary Trunk team for their timely work. He looks forward to the project completion by September 2016.


January 22, 2015

Want the latest scoop on the Bowness Sanitary Trunk Construction Project? Read Calgary Herald reporter, Reid Southwick, January 22, 2015 article, Five things to know about Calgary's high tech sewer project.

Check out Global Calgary's great footage of micro-tunneling of the NW sewage line development.

Bowness Sanitary Trunk Construction Project Newsletter


Based on a 2010 study of Calgary’s northwest wastewater system and the impacts of growth to its infrastructure, Water Services has determined that the main sanitary sewer line is operating at capacity. In ward 1, several communities are impacted:

• Bowness
• Canada Olympic Park
• Crestmont
• Greenwood/Greenbriar
• Rockyridge
• Scenic Acres
• Silver Springs
• Tuscany
• Valley Ridge
• Varsity

In order to protect public safety, property and the environment, The City has new criteria for how planning, development and building applications are processed in impacted northwest communities and areas. Since October 31, 2013, a new criteria issued to process new and existing applications  until upgrades to the West Memorial Sanitary Trunk are completed by Water Services in 2017.

Water Services has begun work to upgrade the wastewater system to increase capacity in this section of the northwest.  This work includes upgrades to the existing wastewater system, adding a second wastewater pipeline under the Bow River, and completing wastewater upgrades in Bowness.  This work is estimated to be completed in 2017.











Underground Tunnel
Underground Tunnel


Q & A - Geotechnical Drilling in Bow River

2013 West Memorial Drive Sanitary Trunk Study

Project Map

Bowness Sanitary Trunk Project PowerPoint


View the display boards from the October 23, 2014 Bowness Sanitary Open House.

November 2, 2014 - Work is underway in Shouldice Park

Work is underway for the Bowness Offload Sanitary Trunk Project. This is the first wall pour of the 40" deep launch shaft in Shouldice Park, south of the 16 Ave Bridge. The shaft is expected to be fully excavated prior to Christmas, with the tunneling across the Bow River to begin in mid to late January, 2015.

40" Launch Shaft
40" Launch Shaft


This content represents the personal views and opinions of the Councillor and should not be taken as a statement of policy of The City of Calgary. The inclusion of any external content does not imply endorsement by The City of Calgary.

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