Written by IAPMO 10:17 pm Plumbing News, Sustainable Codes

IAPMO WE•Stand Monograph Now Available

Ontario, Calif. — The International Association of Plumbing and Mechanical Officials (IAPMO®) has made the 2023 Water Efficiency and Sanitation Standard (WE•Stand) technical committee meeting monograph available for download.

All individuals anticipating an active role in the American National Standards Institute (ANSI)-accredited consensus development of the WE•Stand at the technical committee meetings, May 17-18, in Ontario, Calif., will want to download these documents in Adobe PDF format HERE.

Hardcopy versions will not be available at the meetings.

To accommodate those who cannot attend in-person, an online option is available for those wishing to participate virtually. Virtual attendees are required to register in order to participate. Please contact codes-dept@iapmo.org to obtain virtual meeting registration information.

The technical committee meeting monograph contains every change proposal submitted for the 2023 edition of the WE•Stand as part of the ANSI-accredited consensus code development process employed by IAPMO.

Topic areas for proposed changes to the WE•Stand include: onsite wastewater treatment systems for direct potable water use; onsite gray water treatment systems; the Water Demand Calculator (WDC); reverse osmosis water treatment systems; water efficiency rating systems and methodologies; maximum flow rates for fixtures and fittings; combination ovens; steam sterilizers; leak detection and control; irrigation control systems; permit exceptions for urine reuse systems; slopes for horizontal urine diversion piping; urine storage tanks; maintenance plans for urine diversion systems; rainwater storage tanks; maximum hot water system ratios; collection surfaces, drainage materials, and minimum water quality for potable rainwater catchment systems.

IAPMO urges its members and other interested parties to get involved in the code development process to ensure effectiveness in preserving the public’s health, safety, and welfare through fair and balanced development of the WE•Stand. Installers, plumbing officials, the construction industry, engineers, and manufacturers all benefit from a cooperative effort in developing codes and standards.

For specific information about the WE•Stand technical committee, please contact Taylor Duran at (909) 218-8126 or e-mail your question to 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: April 3, 2023