The Ontario Building Code | Cast Iron Drainage and Vent Pipe and Fittings Cast Iron drainage and vent pipe and Fittings

(1) drainage piping, vent piping and fittings made of cast iron shall be certified to CAN/CSA-B70, "Cast Iron soil pipe, Fittings and Means of Joining".

(2) Cast iron soil pipe and fittings shall not be used in a water system.