MarkhamBuilding PermitsPlumbing & Drains
Quick Reference – Backflow Preventers
Published by City of Markham
This is the City of Markham’s document, as published on its website on 18 October 2026. The municipality may have changed it since: check the current version at the source. Legal notice
- Type
- Guide
- Published by
- City of Markham
- Date
- May 2023
- Also called
- Backflow Preventers
- For
- contractor
- Building types
- All building types
- Pages
- 1
Overview
Markham Building Standards' one-page ePLAN quick reference for backflow preventer permit applications, dated May 2023 and listed with the City's ePLAN guides and tutorials. It gives the ePLAN settings, Non-Housing Permits, Plumbing, Backflow Prevention Device and Installation, a project description stating the number of testable backflow preventers, and the documents uploaded: the Permit Applicant Authorization Form where the applicant is not the owner, the Plumbing Data Form, and a Cross Connection Survey for buildings other than houses, the survey Markham's Backflow Prevention By-law 2012-27 sets out.
What it covers
- Submitting an Application
- Detailed Information of New Application
- Project Description
- Submission Requirements
- Documents
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