7.7.2.2.Permitted Applications

(1)   Non-potable rainwater harvesting systems are only permitted to supply
  (a)   water closets and urinals,
  (b)   clothes washers,
  (c)   floor-mounted service sinks and laundry trays,
  (d)   trap primers,
  (e)   irrigation systems,
  (f)   hydronic systems,
  (g)   make-up water systems for heat rejection systems, or
  (h)   any other application where the harvested rainwater is not expected to be ingested or inhaled.

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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.