Your drawings must clearly show what is existing and the changes you’re proposing. Drawings must be to scale, and should use metric measurements. We may request additional information when your application is reviewed.
For a backflow preventer you’ll need to submit:
The site plan must include the following:
If the backflow prevention device(s) is to be installed in a water system that serves a fire protection system (sprinkler, standpipe), additional details will be required.
Learn more about backflow prevention serving fire protection systems.
If you need more information, call 311 (905-615-4311) or contact us online.