Backflow Prevention Online Services

  1. Instructions to Submit a Backflow Preventer Test & Inspection Report
  2. Instructions to Submit a Cross Connection Control Survey Report (PDF)
  3. Instructions to Submit a Device Upgrade Implementation Report (PDF)

Please Select Your Category

Facility Owners
Qualified Person Registration Application
Registered Qualified Persons

Customers with Multiple Facilities

The personal information on this form is collected under the authority of the Municipal Act, 2001. The information collected will be used by the City of Markham to administer Markham’s Backflow Prevention Program and enforce the Backflow Prevention By-law #2012-27. Questions about this collection can be directed to the Environmental Services Department, City of Markham, 8100 Warden Avenue, Markham, Ontario, L6G 1B4, 905.475.4862,