The Ontario Building Code | Linings and Coatings of Domestic Water Tanks
7.2.10.7. Linings and Coatings of Domestic water Tanks
(1) Linings and coatings of domestic water tanks that come into contact with potable water shall be certified to NSF/ANSI 61, "Drinking water System Components - Health Effects".
In Plain Language
Linings and coatings of domestic water tanks must meet requirements ensuring they don't contaminate the potable water supply or degrade in a way that compromises the tank's structural integrity.
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.