National Plumbing Code of Canada 2020
The National Plumbing Code of Canada (NPC) 2020, developed by the Canadian Commission on Building and Fire Codes and published by the National Research Council of Canada, sets out technical requirements for the design and installation of new plumbing systems, as well as the extension, alteration, renewal and repair of existing plumbing systems.
Over 50 technical changes have been incorporated in this new edition, improving the level of safety, health, water-use efficiency, and protection from water and sewage damage provided by the Code, and expanding design and material options.
Significant changes in the NPC 2020
- Fibrocement pipe and fittings are included as alternatives to asbestos-cement materials, which were removed from the NPC 2015 as an interim change.
- Other new plumbing materials are added as options, including polyethylene of raised temperature (PE-RT) tube, cellular core polyvinyl chloride (PVC) pipe, and their fittings.
- The maximum temperature for water discharging from shower heads or into bathtubs is reduced in health-care facilities and seniors' residences to prevent scalding.
- Gate valves and screw caps, which require manual intervention, are removed as options for backflow protection to reduce the risk of basement flooding.
- Design requirements for non-potable rainwater harvesting systems are introduced to facilitate the collection and use of rainwater.
The National Plumbing Code of Canada 2020 (NPC), together with the National Building Code of Canada 2020 (NBC), the National Energy Code of Canada for Buildings 2020 (NECB) and the National Fire Code of Canada 2020 (NFC), has been developed by the Canadian Commission on Building and Fire Codes (CCBFC) as an objective-based national model code that can be adopted by provincial and territorial governments.
In Canada, provincial and territorial governments have the authority to enact legislation that regulates the design and installation of plumbing systems within their jurisdictions. This may involve the adoption of the NPC without change or with modifications to suit local needs, and the enactment of other laws and regulations regarding plumbing system design and installation, including requirements for professional involvement.
The NPC is a model code in the sense that it helps promote consistency among provincial and territorial plumbing codes. Persons involved in the design or installation of plumbing systems should consult the provincial or territorial jurisdiction concerned to find out which plumbing code is applicable.
This edition of the NPC succeeds the 2015 edition.
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