2024 Uniform Plumbing Code

2024 Uniform Plumbing Code (UPC)

The 2024 Uniform Plumbing Code (UPC®) provides the latest requirements and standards for the design, installation, inspection, and maintenance of safe and sanitary plumbing systems. Developed through the ANSI Consensus Process and designated as an American National Standard by the American National Standards Institute (ANSI), the 2024 UPC reflects current practices, technologies, and innovations in the plumbing industry.

The UPC is designed to help ensure safe, sanitary, and reliable plumbing systems while allowing flexibility for new technologies and innovative plumbing solutions. The 2024 edition includes significant updates addressing water supply, sanitation, plumbing fixtures, nonpotable water systems, stormwater treatment, and emerging building applications.

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