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IAPMO Solicits Public Comments for 2023 WE•Stand, 2024 USHGC, USPSHTC

Ontario, Calif. — The International Association of Plumbing and Mechanical Officials (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 2022 Report on Proposals (ROP) for the 2023 and 2024 editions of these model codes, the preceding editions of which American National Standards.

The public comment form, as well as instructions and background on IAPMO’s ANSI-accredited consensus development process, can be found at:



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. 13, 2023. All public comments will be distributed to the technical committee members on April 3, 2023, and reviewed at their meetings, May 15-18, 2023, 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.


IAPMO develops and publishes the Uniform Plumbing Code®,the most widely recognized code of practice used by the plumbing industry worldwide; Uniform Mechanical Code®; Uniform Swimming Pool, Spa and Hot Tub Code®; and Uniform Solar Energy, Hydronics and Geothermal Code — the only plumbing, mechanical, solar energy and swimming pool codes designated by ANSI as American National Standards — and the Water Efficiency Standard (WE-Stand)™. IAPMO works with government, contractors, labor force, and manufacturers to produce product standards, technical manuals, personnel certification/educational programs and additional resources in order to meet the ever-evolving demands of the industry in protecting public health and safety.

Last modified: December 30, 2022