PART 8 — SEWAGE SYSTEMSUpdated for the 2024 Ontario Building Code
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8.1.2.1.Classification of Systems
(1) All sewage systems shall be classed as one of the following:
(a) Class 1 — a chemical toilet, an incinerating toilet, a recirculating toilet, a self-contained portable toilet and all forms
of privy including a portable privy, an earth pit privy, a pail privy, a privy vault and a composting toilet system,
(b) Class 2 — a greywater system,
(c) Class 3 — a cesspool,
(d) Class 4 — a leaching bed system, or
(e) Class 5 — a system that requires or uses a holding tank for the retention of hauled sewage at the site where it is
produced prior to its collection by a hauled sewage system.
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Code text is reproduced for reference from the Ontario Building Code (O. Reg. 163/24, 2024 Building Code Compendium). This page is provided for general information and is not an official copy. Always verify requirements against the official Ontario Building Code and confirm with your local building department.