Summary of Significant Proposed Changes

National Plumbing Code of Canada (NPC)

Water Pipe Sizing

Work was undertaken to review new materials and technology to determine if changes were needed to the pipe sizing information in the NPC. It was concluded that the information in the NPC needed to be updated since the use of water-conserving appliances and fixtures in buildings and facilities is becoming standard practice. This results in a lower water usage, which has an impact on the water pipes delivering water to the building or facility.

The Standing Committee on Building and Plumbing Services developed material, which resulted in a number of changes to Sections 2.6 and 2.7. and Appendix A of Division B.