National Plumbing Code of Canada: 2025

From National Research Council Canada

Download	View final version: National Plumbing Code of Canada: 2025 (PDF, 1.7 MiB)
DOI	Resolve DOI: https://doi.org/10.4224/k26x-nc55
Author	Search for: Canadian Board for Harmonized Construction Codes
Format	Text, Standard or Specification
ISBN	978-0-660-77003-1 978-0-660-77002-4
Physical description	246 p.
Subject	Codes & guides; construction; building; plumbing; NRCCode; NRCCode2025
Abstract	The NPC includes provisions for the safe installation of potable water systems, the removal of wastewater to municipal or private sewage water systems, and water use efficiency. The 2025 edition of the NPC includes the following updates: - Introduction of requirements for condensate drainage systems to prevent leaks, odours and mould - Clarification of the requirements for roof drainage systems, while providing additional design options Introduction of requirements to protect potable water from chemical contamination - Removal of dilution as an option for treating corrosive or acid waste, while retaining neutralization, to better protect plumbing infrastructure and the environment
Publication date	2025-12-22
Publisher	National Research Council Canada
Access condition	For questions about Code licensing, sales, technical support, to obtain accessible copies, or to learn about other accommodations, please contact the NRC's Codes Canada team: https://nrc.canada.ca/en/certifications-evaluations-standards/codes-canada/help-using-accessing-codes/contact-codes-canada For questions or comments about the content of the Codes and User’s Guides, please contact the CBHCC Secretary <CBHCCSecretary-SecretaireCCHCC@nrc-cnrc.gc.ca>.
Translated as	Comité canadien de l'harmonisation des codes de construction. ‘Code National De La Plomberie : Canada : 2025’. Conseil national de recherches Canada, 22 December 2025. https://doi.org/10.4224/DZZ5-Y706.
Note	First printing On inside cover: First Edition 1970. Second Edition 1975. Third Edition 1977. Fourth Edition 1980. Fifth Edition 1985. Sixth Edition 1990. Seventh Edition 1995. Eight Edition 2005. Ninth Edition 2010. Tenth Edition 2015. Eleventh Edition 2020. Twelfth Edition 2025.
Language	English
Peer reviewed	Yes
NRC number	NRCC-CONST-56756E
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Record identifier	c97ac796-01fc-4383-9c68-b271db2802cf
Record created	2025-12-17
Record modified	2025-12-22

Date modified:: 2026-01-18