2021 Uniform Plumbing Code
2021 Uniform Plumbing Code will once again available electronically, meaning that if someone working from home or in the field and left the code book at the office, it accessible from a computer or mobile device.
Significant changes to the UPC include:
- New Appendix N – Impact of Water Temperature on the Potential for Scalding and Legionella Growth
- New provisions for backflow prevention devices, assemblies and methods
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- provision for temperature limiting devices
- New guards and rails requirements for installation of equipment and appliances on roofs
- New requirements for the discharge of temperature and pressure relief valve piping
- provision on leak detection devices
- New provisions for potable water pumps
- New standards for drain, waste and vent pipe and fittings
- provisions for drain waste and vent cleanouts
- Circuit vent provisions updated and expanded
- Updated fuel gas provisions
- Updated medical gas provisions, including reordering of categories for ease of use
You Can ALso Read International Plumbing Code 2021
The Uniform Codes developed using IAPMO’s ANSI-accredited consensus development procedures. This process brings together volunteers representing a variety of viewpoints and interests to achieve consensus on plumbing and mechanical practices.
The 2021 editions of the UPC and UMC mark the seventh time these codes developed in this manner. IAPMO urges its members and other interested parties to get involved in the process to ensure effectiveness in preserving the public’s health, safety, and welfare through fair and balanced development of its codes and standards. Installers, plumbing and mechanical officials, the construction industry, engineers, and manufacturers all benefit from a cooperative effort in developing codes.
Introduced in Los Angeles in 1928 and formally published as the Uniform Plumbing Code in 1945, the UPC is developed to govern the installation and inspection of plumbing systems as a means of promoting the public’s health, safety and welfare. Later published by IAPMO in 1967, the UMC provides the same governance for mechanical (HVAC, combustion, exhaust, refrigeration) systems.
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