The Ontario Building Code | Water Tests in Drain, Waste and Vent Systems

7.3.6.4. water Tests in Drain, Waste and vent Systems

(1) Where a water test is made, all joints shall be tested with a water column of not less than 3 m.

(2) In making a water test,

(a) every opening except the highest shall be tightly closed with a testing plug or a test cap, and

(b) the system or the section shall be kept filled with water for 15 min.