The Ontario Building Code | Location of Plumbing Fixtures
3.7.6.3. Location of Plumbing Fixtures
(1) A room containing a water closet shall be located where,
(a) it does not open directly into any room or area where food or drink for human consumption, or an ingredient of food or drink for human consumption, is intended to be stored, prepared, processed, distributed, served, sold or offered for sale, and
(b) it is not necessary for the public to go through the food preparation areas to gain access to the plumbing fixtures.
(2) Except as permitted in Sentence (3), a room containing plumbing fixtures for the public and employees in a restaurant shall be located in the restaurant.
(3) A room containing plumbing fixtures for the public in Sentence (2) need not be located in the restaurant if,
(a) the room is located in the building containing the restaurant, and
(b) the distance of travel between the restaurant and the room is not more than 45 m.
In Plain Language
A room containing a water closet must be located so it doesn't open directly into any area where food or drink is stored, prepared, processed, or served, keeping restroom air and traffic away from food-handling spaces.
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.