The 2024
edition of the Uniform Plumbing Code (UPC®) represents the most current
approaches in the plumbing field. It is the eighth edition developed under the
ANSI Consensus process is designated as an American National Standards by the
American National Standards Institute (ANSI). Contributions to the content of
this code were made by The 2024 edition of the Uniform Plumbing Code (UPC®)
represents the most current approaches in the plumbing field. It is the eighth
edition developed under the ANSI Consensus process is designated as an American
National Standards by the American National Standards Institute (ANSI).
Contributions to the content of this code were made by every segment of the
built industry, including such diverse interests as consumers, enforcing
authorities, installers/maintainers, labor, manufacturers, research/standards/testing
laboratories, special experts and users.

The UPC is
designed to provide consumers with safe and sanitary plumbing systems while, at
the same time, allowing latitude for innovation and new technologies. Key
changes to the 2024 UPC include:

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 every segment
  of the built industry, including such diverse interests as consumers, enforcing
  authorities, installers/maintainers, labor, manufacturers, research/standards/testing
  laboratories, special experts and users.