The Ontario Building Code | Application
8.3.1.2. application
(1) Except as provided in Sentence (2), a Class 1 sewagesystem shall be designed to receive only human body waste for disposal.
(2) Where the sewage system is specifically designed for the biological decomposition of non-waterborne biodegradable kitchen wastes or requires the addition of small quantities of plant matter to improve the decomposition of human body waste, it may receive such wastes in addition to human body waste.
(3) Where the sewage system is designed with a drain for the removal of excess liquid, then the sewage system shall drain to a Class 3, 4, or 5 sewage system.
8.3.2. Superstructure Requirements
In Plain Language
This article sets out when and where the requirements in this Section apply, clarifying the conditions under which this particular system type or component is permitted.
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.