CODE DEVELOPMENT
IAPMO Codes are developed in accordance with an American National Standards Institute (ANSI) accredited development process
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.
For those of you who are planning to make a motion during the session, please fill out a comment form with all pertinent information prior to the start of the meeting and email to codes-dept@iapmo.org.
Please fill out form with (your) name and affiliation; state the motion (proposal or comment number with the page number in the ROP or ROC) and wait for a moderator to acknowledge.
We will also require that any modifications be provided in strikeout and underline format on a memory stick.
Once the Moderator has recognized the second, proceed with the discussion. For discussion purposes, please keep the information simple and to the point, and provide any applicable references to statements and ballots in the ROP or ROC.
Audio and visual presentations are prohibited.
Interested parties are encouraged to download the ROC's on the following links:
The Technical Committee meeting monographs are now available. Interested parties are encouraged to download the monographs via the following links:
2025 USPSHTC TC Meeting Monograph 2025 USPSHTC TC Actions
The 2027 UPC/UMC Code Development Timeline is now available for download.
The 2027 USPSHTC/USHGC Code Development Timeline is now available for download.
The 2027 WESTAND Code Development Timeline is now available for download.
The IAPMO Codes Portal connects the industry with the IAPMO code development process. IAPMO urges its members and other interested parties to get involved in the code development process to ensure effectiveness in preserving the public health, safety, and welfare through fair and balanced development of the Uniform Codes. Installers, plumbing and mechanical officials, the construction industry, engineers, and manufacturers all benefit from a cooperative effort in developing codes.
The IAPMO Codes app provides mobile access to IAPMO's published codes, such as the Uniform Plumbing Code (UPC), Uniform Mechanical Code (UMC), and others. It allows users to view their purchased code books, make annotations and voice recordings, and access code-related information, even offline. The app also facilitates engagement with the code development process, including access to timelines, notifications, and contact information for technical staff. 
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.
(Four Step Process)
(Three Step Process)
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 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.
