7.4.5.5.Trap Seals

(1)   Provision shall be made for maintaining the trap seal of a floor drain or a hub drain by
  (a)   the use of a trap seal primer,
  (b)   using the drain as a receptacle for an indirectly connected drinking fountain, or
  (c)   other equally effective means.

  (2) Where a mechanical device is installed to furnish water to a trap, the pipe or tube conveying water from the device
      to the trap shall be at least ⅜ in. inside diameter.

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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.