2024 NSPC Illustrated

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If you live in the State of New Jersey please purchase your code from www.NJ-phcc.org

The 2024 NSPC provides the latest information about common materials, fixtures, devices and equipment systems used or installed in plumbing systems. This new edition is printed in the popular illustrated format, with comments and illustrations clearly shown as supplemental information. The illustrations and supplementary notes make it an indispensable training tool.


Significant changes to the 2024 NSPC include the following:

  • New provisions for all gender toilet facilities
  • New provisions for adult changing stations
  • New standards for water closet compartments and urinal partitions
  • Wet Venting completely revised
  • Air admittance valves moved to Chapter 12
  • Appendix G, intended to promote safe and efficient water use in both residential and non-residential buildings, has been updated with revised excerpts from the 2020 Water Efficiency and Sanitation Standard (WE•Stand)
  • IAPMO’s Water Demand Calculator included as a sizing option in Appendix G
  • New Appendix M addressing Impact of Water Temperature on the Potential for Scalding and Legionella Growth
  • New Appendix N providing requirements for Non-Sewered Sanitation Systems

New Appendix O addressing plumbing requirements for Indoor Horticultural Facilities