The Ontario Building Code | Protection for Exterior Water Supply
7.6.1.9. Protection for exterior Water Supply
(1) Every pipe that passes through an exterior wall to supply water to the exterior of the building shall be provided with,
(a) a frost-proof hydrant with a separate shut-off valve located inside the building, or
(b) a stop-and-waste cock located inside the building and close to the wall.
In Plain Language
Exterior water supply components, such as outdoor hose bibs, need specific protection measures set out in this article, addressing their exposure to freezing and other outdoor conditions.
This is a plain-language summary of the 2012/2017 Ontario Building Code text above, for general understanding only and not a substitute for the Code. Always confirm current requirements against the 2024 edition (O.Reg. 163/24) or a qualified professional before construction.