The International Association of Plumbing and Mechanical Officials (IAPMO®) announced that it has published the 2024 editions of the Uniform Plumbing Code® (UPC).
The IAPMO codes is available in hardcopy and electronic versions, making the code accessible from a computer or mobile device.
The UPC is 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 practices. The 2024 editions of the UPC mark sthe eighth time this code have been developed in this manner.
Significant changes to the UPC include:
- New provisions for tileable shower receptors and kits
- Provision for temperature-actuated, flow reduction devices for individual fittings
- New provisions for all-gender facilities, including fixture count, privacy compartments, and partitions
- New requirements for water supply and distribution manifolds
- Updated provisions for hot-water recirculating systems
- New provisions for private well water tanks
- Updated provisions for appliance condensate drains when serving more than one appliance and connecting to a common indirect waste pipe
- Updated minimum water quality provisions for onsite treated nonpotable water systems, nonpotable water devices and systems, for harvested rainwater systems
- Update water supply fixture unit (WSFU) and drainage fixture unit (DFU) values for bathroom groups in Appendix C;
- New Appendix O providing minimum non-sewered sanitation systems
- New Appendix P providing minimum qualifications for inspectors, examiners, service technicians, installers, and administrators relating to systems addressed in the UPC
- New Appendix Q addressing plumbing requirements for indoor horticultural facilities
- New Appendix R providing minimum plumbing system requirements for tiny houses
- New Appendix S with provisions pertaining to onsite stormwater treatment systems
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. Developed and subsequently republished at the conclusion of each three-year code cycle, the UPC is designed to provide consumers with plumbing systems that meet all applicable standards while, at the same time, allowing latitude for innovation and new technologies.
The public at large is encouraged and invited to participate in IAPMO’s open consensus code development process.
The 2024 UPC may be purchased online through the IAPMO bookstore.
