September Construction Update

Watermain Replacement & Road Reconstruction Lansdowne Avenue from south of Dundas Street West to Rideau Avenue

The City of Toronto has been working to replace the watermain on Lansdowne Avenue from south of Dundas Street to Rideau Avenue, and on the Lansdowne Avenue East Branch up to Shirley Street since June of 2016. The progress on this project was delayed by unfavourable water testing results (more details below). Thank you for your patience during this project.

Why Did Water testing take so long?

The City’s first priority is to ensure that all of pipes and the water flowing through the pipes meet the Ministry of Environment and Climate Change (MOECC) drinking water quality standards. Before a new watermain can be put into service, the City tests the water at an accredited lab to ensure it is safe to drink.

This involves taking two samples, 24 hours apart, and having them tested to ensure they meet stringent drinking water quality standards — these standards are set by MOECC. If a test result fails to meet the standard, crews work as quickly as possible to rectify the situation and the action taken depends on the situation.


Water Testing on Lansdowne Ave

 There are a number of reasons why water quality samples taken from new pipes can fail and this can include contamination during sampling or insufficient disinfection of the pipe and sometimes hot weather can make sampling more difficult as it affects the chemistry of disinfection, but it’s not always the case.  Once corrective action has been taken, the City will return to take more samples for testing.  When two consecutive samples are found to meet the MOECC’s drinking water quality standards, the watermain can be put into service. We apologize, but the water quality testing process can take time.

To date the City’s contractor has installed the new watermain.
Now that the new watermain is in service, crews will:

  • Replace City-owned service pipes that do not meet City standards (from the watermain to the private property line).
  • Reconstruct the sidewalks and road to complete the project.


    Lansdowne Ave north of Rideau Ave


  • You will experience dust, noise and other inconveniences.
  • Property owners should remove items located within City property limits (boulevard or front yard), such as landscaping and / or decorative objects.
  • The City will not be responsible for damage to any privately owned items on City property.

Work Hours: Work will typically take place from 7:00 a.m. to 7:00 p.m. Monday to Friday and 9:00 a.m. to 6:00 p.m. on Saturday.

Traffic Management: Efforts have been made to manage traffic in the area for the safety of workers, road users, and residents. Road users should expect delays and increased traffic on nearby main and side streets.

  • Southbound traffic will only be maintained details below for local access to the supermarket plaza located at the south-west corner of Lansdowne Avenue and Dundas Street.
  • Lansdowne Avenue will be closed in the southbound direction from Dundas street West to Rideau Avenue for the entire project.

Northbound traffic on Lansdowne Avenue will be maintained at all times.

TTC [Converted]
47 Lansdowne Bus Route

  • Southbound buses on the 47 Lansdowne route will be diverted via, south on Lansdowne Avenue, east on Dundas Street West, south on Dufferin Street, west on Queen Street West, north on Macdonell Avenue, east on Seaforth Avenue and north on Lansdowne Avenue to regular route.
  • Northbound service will be maintained.

Visit: for accurate schedule information

Alternate Cycle Routes: Cyclists travelling southbound on Lansdowne between Bloor and College Streets and will be diverted west to St. Helen’s Avenue via Lumbervale Avenue, then west on to Dundas Street West and south on Sorauren Avenue. Cyclists travelling northbound on Lansdowne Avenue between Rideau Avenue and Dundas Street West will be required to merge with traffic.

Additional Information

For more information about Toronto Construction projects:

College Street Projects:

Downtown Construction Projects:

 TTC Service Diversions information:

 Toronto Road Restrictions:

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