Notice: May 16, 2025 - Downsview Transmission Watermain Commissioning
City of Toronto will resume work on Tuesday May 20, 2025 to connect a new transmission watermain to the existing watermain network. This may result in an increase in water pressure in the area bounded by Ashwarren Rd to the north, CN Railway to the east, Carl Hall Rd to the south, and Keele Street to the west. If you experience no water or significant water pressure loss, please call 311.
The City of Toronto is divided into six operating levels or zones which result in 12 separate pressure districts. The ground elevations in each zone were selected so that the water system pressure in the zone, under normal pumping conditions, varies from a minimum of 275 kiloPascals (kPa) to a maximum of 793 kPa.
Before submitting a service request with 311 Toronto to investigate low water pressure, please visit the City of Toronto website.