The Ontario Building Code | Tests of Potable Water Systems

7.3.7.2. Tests of Potable water Systems

(1) Every potable water system shall be capable of,

(a) withstanding without leakage a water pressure that is at least 1 000 kPa for at least 1 h, or

(b) withstanding for at least 2 h without a drop in pressure an air pressure that is at least 700 kPa.