Ontario, California — IAPMO®, publisher of the Water Efficiency and Sanitation Standard (WE•Stand), Uniform Solar, Hydronics and Geothermal Code (USHGC) and Uniform Swimming Pool, Spa and Hot Tub Code (USPSHTC), is calling for public comments on the 2025 Report on Proposals (ROP) for the 2027 editions of these model codes, the preceding editions of which are American National Standards.
Public comments can be submitted using the new IAPMO Codes Portal site at the following URL: https://codeproposals.iapmo.org
An account must be created to submit a comment. Instructions on how to submit code changes through the IAPMO Codes Portal can be obtained at the following URL: https://codes.iapmo.org/docs/IAPMO%20Instructions%20for%20Submitting%20Comments.pdf
All comments should be submitted using the exact wording wished to be recommended to the technical committees for review. Each comment must include one recommendation of the following: accept as submitted, accept as modified, or reject. Additionally, each comment must state the problem the recommendation will resolve and any technical justification for making the comment.
No comments will be accepted after the 5 p.m. PST deadline on Jan. 16, 2026. All public comments will be distributed to the technical committee members on April 3, 2026, and reviewed at their meetings, May 11-14, 2026, in Ontario, California.
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.
For specific questions about submitting comments for the USPSHTC please contact: Enrique Gonzalez at (909) 230-5535 or enrique.gonzalez@iapmo.org.
For specific questions about submitting comments for the USHGC or WE•Stand please contact: Taylor Duran at (909) 218-8126 or taylor.duran@iapmo.org.
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IAPMO® is pleased to announce the publication of IAPMO/ANSI/CAN Z1403-2026, Water Demand Calculator®, a new American National Standard and National Standard of Canada that provides a modern, statistically based method for estimating peak water demand in single-family and multifamily residential buildings.
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