The Ontario Building Code | Venting of Sanitary Sewage Sumps
7.5.5.1. venting ="http://thehandyforce.com/interior/bathroom-renovations/" title ="Toronto Bathroom renovation inspiration">venting of sanitary Sewage Sumps
(1) Every sump or tank that receives sanitary sewage shall be provided with a vent pipethat is connected to the top of the sump or tank.
In Plain Language
Sanitary sewage sumps must be vented according to this article's requirements, since a sealed sump collecting sewage still needs somewhere for displaced air and gas to go.
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.