Code Library › Volume 1 › Section 11.4 — Performance Level Evaluation and
PART 11 — RENOVATIONUpdated for the 2024 Ontario Building Code

11.4.3.6.Sewage Systems

(1) Where the performance level of an existing building is reduced under Article 11.4.2.5., upgrading of a sewage system which is adversely affected by the construction, increase in occupant load, increase in the total daily design sanitary sewage flow or change in amount or type of sanitary sewage shall be required in conformance with Part 8.
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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.