IAPMO Codes and Standards provides innovative codes and standards solutions for the protection of the public’s health, safety and welfare. We address the world’s codes and standards needs to improve life for a better, more resilient tomorrow.
RECENT NEWS 2023 UPC/UMC 1st TC Meeting Information.
The 2023 UPC/UMC TC Newsletter is now available to assist with the upcoming Zoom Teleconference Meeting. 2027 UPC and UMC Development Timeline Now Available.
The development timeline can be viewed at 2027 UPC/UMC Timeline. 2024 UPC and UMC Decisions for Petitions.
The IAPMO Board of Directors decisions on petitions are now available. 2022 WE•Stand Report on Proposals (ROP)
Interested parties are encouraged to download the ROP at the following link: 2022 WE•Stand Report on Proposals 2022 USPSHTC/USHGC Report on Proposals (ROP)Interested parties are encouraged to download the ROP at the following links: 2022 USPSHTC ROP 2022 USHGC ROP |
ANSI-Accredited Development Process
With its Uniform Plumbing Code; Uniform Mechanical Code; Uniform Solar, Hydronic and Geothermal Code; Uniform Swimming Pool, Spa and Hot Tub Code; and Water Efficiency and Sanitation Standard (WE•Stand) designated as American National Standards, IAPMO is proud to utilize an open consensus process accredited by the American National Standards Institute (ANSI) in its code development practice.
Click here to learn more about the IAPMO Codes and Standards development process.
UPC and UMC Development Process (Four Step Process) |
USHGC, USPSHTC and WE•Stand Development Process (Three Step Process) |
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Building True Consensus
IAPMO gathers the largest assembly of plumbing and mechanical experts in the world at its annual education and business conference, where anyone — members and non-members alike — can have a voice and a vote on proposed changes to the code.
The purpose of the IAPMO code development process is to ensure the continued development and maintenance of the Uniform Codes with the following goals in the forefront:
IAPMO urges its members and other interested parties to get involved in the code development process to ensure that these goals are maintained. Installers, plumbing and mechanical officials, the construction industry, engineers, and manufacturers all benefit from a cooperative effort in developing codes.
Click on the following covers to go directly to the individual document development page
Code Errata, Addendums, Tentative Interim Amendments & Formal Interpretations Available Here
Click "Read More" for additional Press Releases & Articles
IAPMO Codes and Standards provides innovative codes and standards solutions for the protection of the public’s health, safety and welfare. We address the world’s codes and standards needs to improve life for a better, more resilient tomorrow.
RECENT NEWS 2027 UPC and UMC Development Timeline Now Available.
The development timeline can be viewed at 2027 UPC/UMC Timeline. 2024 UPC and UMC Petitions.
Five intents to petitions have been filed to the 2024 UPC and UMC. Standards Council Decision on Appeals now Available
Click here to view decisions All Notices of Intent to File a Petition from decisions of the Standards Council are due, via email, by December 29. If you will request a hearing, please include that request in your Notice of Intent by December 29. All written petitions are due by January 13, 2023. The Regulations Governing Petitions to the Board of Directors from Decisions of the Standards Council govern the petitions process. Please take note of Section 6 - Filing and Contents of the Petition, and Section 8 - Requests for Hearings. All timely and properly submitted petitions will be posted to the IAPMO website notifying interested parties of their ability to submit a written response and to attend the hearing either in support of or opposition to the petition, in accordance with Section 7-2 of the Regulations noted above. If you have any questions, please contact Hugo Aguilar or Gaby Davis. Hugo can be reached via email at Hugo.Aguilar@iapmo.org and Gaby can be reached via email at Gaby.Davis@ipmo.org. 2022 WE•Stand Report on Proposals (ROP)
Interested parties are encouraged to download the ROP at the following link: 2022 WE•Stand Report on Proposals 2022 USPSHTC/USHGC Report on Proposals (ROP)Interested parties are encouraged to download the ROP at the following links: |
ANSI-Accredited Development Process
With its Uniform Plumbing Code; Uniform Mechanical Code; Uniform Solar, Hydronic and Geothermal Code; Uniform Swimming Pool, Spa and Hot Tub Code; and Water Efficiency and Sanitation Standard (WE•Stand) designated as American National Standards, IAPMO is proud to utilize an open consensus process accredited by the American National Standards Institute (ANSI) in its code development practice.
Click here to learn more about the IAPMO Codes and Standards development process.
UPC and UMC Development Process (Four Step Process) |
USHGC, USPSHTC and WE•Stand Development Process (Three Step Process) |
![]() |
![]() |
Building True Consensus
IAPMO gathers the largest assembly of plumbing and mechanical experts in the world at its annual education and business conference, where anyone — members and non-members alike — can have a voice and a vote on proposed changes to the code.
The purpose of the IAPMO code development process is to ensure the continued development and maintenance of the Uniform Codes with the following goals in the forefront:
IAPMO urges its members and other interested parties to get involved in the code development process to ensure that these goals are maintained. Installers, plumbing and mechanical officials, the construction industry, engineers, and manufacturers all benefit from a cooperative effort in developing codes.
Click on the following covers to go directly to the individual document development page
Code Errata, Addendums, Tentative Interim Amendments & Formal Interpretations Available Here