In Plain Language

A dishwashing sink and a food preparation sink can't have concealed overflows, since a hidden overflow passage in a food-handling fixture can harbour bacteria and contamination that's difficult to clean.

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.