All Qualified Persons must register with the City before doing any backflow prevention work in Markham. The Qualified Person's registration is free.
Please use this Qualified Persons Registration Form (PDF). Fill out the form and send it with copies of applicable certifications to the City at backflow@markham.ca.
Or, make the Qualified Person’s registration online through the “Online Services Website” section (see below).
See the List of Qualified Persons (PDF) currently registered with the City.