The Ontario Building Code | Connection of Systems
7.6.2.1. Connection of Systems
(1) Connections to potable water systems shall be designed and installed so that non-potable water or substances that may render the water non-potable cannot enter the system.
(2) No connection shall be made between a potablewater system supplied with water from a drinking water system and any other potablewater system without the consent of the water purveyor.
In Plain Language
This article sets requirements for how different water systems within a building may be connected to each other, protecting against unwanted mixing between systems of different water quality.
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.