Ontario, California — 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.
Interested parties are encouraged to download the documents below:
One of the many benefits of the IAPMO consensus code development process is the ability for anyone and everyone to have a voice. On Sept. 16, during the association’s Annual Education and Business Conference, IAPMO will conduct the Association Technical Meeting Convention at the Renaissance Palm Springs Hotel in Palm Springs, California, providing stakeholders the opportunity to advocate for their position on proposed changes.
Those wishing to make a motion must complete a comment form explaining their proposed motion from the Report on Proposals (ROP) or ROC to present to the Association Technical Meeting on that day.
All comment forms must be received no later than 9 a.m. PDT Sept. 16.
Download the comment form
Motions at the Association Technical Meeting must be in accordance with Section 4-5 of the Regulations Governing Committee Projects.
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 its codes and standards. Installers, plumbing and mechanical officials, the construction industry, engineers, and manufacturers all benefit from a cooperative effort in developing codes.
For questions about submitting comments for the UPC, contact Enrique Gonzalez at (909) 230-5535 or enrique.gonzalez@iapmo.org. For questions about submitting comments for the UMC, contact Taylor Duran at (909) 218-8126 or taylor.duran@iapmo.org.
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.
IAPMO’s Systems Certification Body (SCB) has issued the first certificates under the Aluminum Anodizers Council (AAC) Certification Program, providing independent third-party verification of conformity with established performance requirements for anodized aluminum finishes and products.
IAPMO® is pleased to announce that Shirley Dewi has been promoted to executive vice president of IAPMO R&T, where she will provide strategic leadership and oversight for the organization’s certification and compliance operations, including Product Certification, the Systems Certification Body (SCB) and Continuous Compliance.