Backflow Device
Apply for a backflow prevention device permit
Learn more about building permit requirements and fees.
Please provide the following to get started:
- Building Permit Application
- Owner's Authorization
- Permit fee (based on number of devices, minimum $150)
- Copy of Durham Region's cross connection survey (completed by Plumber on the Durham Region's list of qualified testers)
- Copy of the Manufacturer's form for sizing the expansion tank
- Copy of Durham Region's notice letter to install the device(s)
- Name of Plumber and Ontario College of Trades Membership Number
- Size and type of device
Please note:
- Devices 2-1/2 in and greater require engineered drawings and general review
- Additional information may be required during the review of submitted drawings and documents
- All backflow devices installed on fire systems require engineered drawings and general review regardless of size