Lead Waste Pipe and Fittings
(1) Lead waste pipe and fittings shall not be used in a water system or for a building sewer.
(2) When there is a change in size of a lead closet bend, the change shall be in the vertical section of the bend or made in such a manner that there shall be no retention of liquid in the bend.
Article 126.96.36.199. Ontario Regulation 332/12 Building Code, Information published by oncodes.ca for educational purposes only