PRESS RELEASE

    U.S. Government Officially Recognizes Uniform Plumbing Code (UPC®)

    U.S. Government Officially Recognizes Uniform Plumbing Code (UPC®)

    Ontario, Calif. — The U.S. General Services Administration (GSA) has incorporated IAPMO’s Uniform Plumbing Code (UPC®) in its newly released Facilities Standards for the Public Buildings Service (P100), marking the first instance that this federal agency has officially referenced the Uniform Codes. 

    With more than 300,000 federal buildings nationwide, the federal government is the country's largest landlord. The GSA owns and leases more than 363 million square feet of space in 8,397 buildings in more than 2,200 communities nationwide.

    “With this official action, the federal government is making it clear projects built to the provisions of the UPC are acceptable within jurisdictions that utilize the code,” IAPMO CEO Dave Viola said. “We would especially like to thank President Biden and his administration for their efforts to specifically include the UPC in GSA guidance.”

    The UPC is included in the 2024 P100 as part of Appendix B, which acknowledges recognized codes. P100 establishes mandatory design standards and performance criteria for GSA-owned buildings. Design and construction professionals must abide by the policy and technical criteria in P100 while programming, designing, and documenting GSA buildings.

    The 2024 P100, which was released May 31, also incorporates a proposed change from ARCSA International — part of The IAPMO Group —requiring major capital projects of more than 5,000 square feet employing rooftop rainwater catchment and harvesting systems to comply with relevant ARCSA/ASPE/ANSI standards. The document is available at www.gsa.gov/p100.

    IAPMO, ASPE, ASSE International, ARCSA International Join Into Renewed MoU Outlining Future Collaboration

    02 September 2025

    IAPMO® and the American Society of Plumbing Engineers (ASPE) have renewed a Memorandum of Understanding (MoU), now incorporating ASSE International and ARCSA International, to jointly advance and promote the mutual interests of education, regulations, design, specifications, installation, and inspection of plumbing systems, as well as training, testing and certifying qualified professionals to perform design work responsive to the need to conserve and protect water supplies, and reduce energy use connected to delivery and use of water.

    Report on Comments Toward Development of 2027 UPC, UMC Now Available for Online Download

    01 August 2025

    IAPMO®, developer of the Uniform Plumbing Code (UPC®) and Uniform Mechanical Code (UMC®), has posted online the 2025 Report on Comments (ROC) for the 2027 editions of these American National Standard-designated model codes. The ROC includes the committee actions as discussed during the May 6-8 technical committee meetings, the electronic ballot results as balloted between May 19-June 16, and the Technical Correlating Committee actions on all comments received for the 2027 editions.

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