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The Official Site of The City of Markham

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Three type of backflow prevention reports are required by the Program
  1. Cross Connection Control Survey Report Form (PDF)
  2. Backflow Preventer Testing and Inspection Report Form (PDF)
  3. Device Upgrade Implementation Report Form (PDF)

Upon the completion of backflow prevention work, the Qualified Person should complete and submit all reports online through the City's Backflow Prevention Program Online Services (see section below).

  • Online submission is free, fast, easy, secure, and available 24/7.
  • Paper submission is not free. The City of Markham charges a processing fee for each paper submission.
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