Phoenix, AZ — The city of Phoenix has announced adoption of the 2024 Phoenix Building Construction Code, which incorporates the 2024 edition of IAPMO’s Uniform Plumbing Code (UPC®) and its Appendix M: the Water Demand Calculator — a breakthrough tool for modern plumbing design.
Implementation of the new code will begin Aug. 1, giving industry professionals time to prepare for the transition and align their practices with the latest safety and sustainability standards.
“The Uniform Plumbing Code and the Water Demand Calculator empower plumbing professionals to design right-sized systems that reduce construction costs, conserve water, and deliver hot water more efficiently,” said IAPMO CEO Dave Viola. “We applaud Phoenix for taking this important step toward building a more resilient, equitable, and sustainable city.”
Matthew Miles, P.E., with the city of Phoenix, added, “Adopting the 2024 Uniform Plumbing Code helps ensure industry professionals in Phoenix can rely on a clear, consistent, and modern set of requirements that support safety and constructability.”
The Water Demand Calculator, now codified in Appendix M of the UPC, uses statistical modeling of real-world water use to accurately predict peak demand for residential buildings. This innovation allows for dramatically smaller pipe diameters without compromising performance — improving energy efficiency, water quality, and cost savings over the life of the system.
Key benefits of Phoenix’s adoption of the 2024 UPC and Water Demand Calculator include:
Ontario, California — IAPMO®, a global team of experts engaging industry and government for a safer built environment, is proud to announce that its Water Demand Calculator® has been featured as a key recommendation in the Pacific Institute’s new landmark report, “Untapped Potential: An Assessment of Municipal and Industrial Water Efficiency Potential in the United States.”
IAPMO® is proud to be a diamond sponsor and administrating organization at the 2025 ANSI Innovation Summit this week. Formerly World Standards Week, the ANSI Innovation Summit is an annual event that convenes the Institute's members and private- and public-sector stakeholders from across the standards and conformity assessment communities to come together, learn from each other, and showcase their important work.
IAPMO®, a global team of experts engaging industry and government for a safer built environment, and its charitable foundation, the International Water, Sanitation and Hygiene Foundation (IWSH®), are proud to celebrate 10 years as a WorldSkills Global Industry Partner. IAPMO and IWSH celebrated the milestone this week at the annual General Assembly of WorldSkills International Members in Dubrovnik, Croatia.