A new Backflow Prevention Program is being developed to prevent the backflow of contaminated water from buildings connected to the City’s drinking water system. The intent of the program is to comply with the highest industry drinking water protection standards, ensure public safety, and address the last unmitigated risk to the drinking water system.
What is a backflow incident?
Backflow incidents happen when low water pressure causes contaminants to flow from buildings into the city drinking water system, potentially causing a public health risk. The City has a duty to comply with the highest industry drinking water protection standards and will work to prevent these incidents to ensure public safety and the long term safety of our shared water resource.
Backflow prevention programs are currently in place in numerous Ontario municipalities, including Toronto, Hamilton, London, Markham, Halton Region and Waterloo.
Implications for property owners
Approximately 14,000 institutional, commercial, industrial and multi-residential facilities across the city will need to be assessed to determine their level of risk. Once assessments are complete, severe and moderate risk buildings will be required to install a backflow prevention device.
NOTE: The majority of City drinking water customers (approximately 212,000 minor risk residential buildings) will not be impacted by this program.
If you have any questions or require further information, please send an email to firstname.lastname@example.org and City staff will follow up with you.