The Ontario Building Code | PVC Pipe and Fittings
7.2.5.8. pvc pipe and Fittings
(1) pvc water pipe, fittings and solvent cement shall be certified to CAN/CSA-B137.3, "Rigid Polyvinylchloride (pvc) pipe and Fittings for pressure Applications" or CAN/CSA-B137.2, "Polyvinylchloride (pvc) Injection-Moulded Gasketed Fittings for pressure Applications", and have a minimum pressure rating of 1 100 kPa.
(2) pvc water pipe and fittings in Sentence (1) shall not be used in a hot water system.