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Backflow Preventer Permit
A Toronto Building permit for installing a backflow preventer on a building's water supply.
You need it when: You install or replace a backflow prevention device on a water service.
Why it's needed
- Backflow prevention devices protect the municipal water supply and are regulated plumbing work under the Building Code.
When to apply
- Before installing the device; usually alongside the plumbing or site services permits.
Review time
Plan for about 10 business days.
Documents for a complete application
- Application for a Permit to Construct or Demolish
- Commitment to General Reviews form
- Plumbing Data Sheet
- Backflow preventer specification
- Backflow Prevention Information Template (devices up to 2"); stamped drawings and specifications for devices over 2"
Submission checklists
How to submit
- Electronic submission to Toronto Building (see the Toronto Building General Notes checklist).
Forms and guides
- Backflow Prevention Information Template (OMPAC-006) (City of Toronto, template)
- Water Servicing and Metering Manual (City of Toronto, standard / specification)
Official pages
Track Backflow Preventer Permit free.
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Sources are marked in the text: [TO] toronto.ca pages, [Guide] general industry guidance, [Plan] permit planning practice. Confirm on the official page before applying.