7.3.6.4.Water Pressure Tests

(1) A water pressure test shall consist in applying a water column of at least 3 m to all joints.

  (2) In making a water pressure test,
  (a) every opening except the highest shall be tightly closed with a testing plug or a screw cap, and
  (b) the system or the section shall be kept filled with water for 15 min.

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Code text is reproduced for reference from the Ontario Building Code (O. Reg. 163/24, 2024 Building Code Compendium). This page is provided for general information and is not an official copy. Always verify requirements against the official Ontario Building Code and confirm with your local building department.