Ontario, Calif. — IAPMO R&T, a leading developer of standards for the plumbing, mechanical and solar industries, is pleased to announce that the new standard IAPMO/ANSI S1001.1, Design and Installation of Solar Water Heating Systems, has been approved by the American National Standards Institute (ANSI) as an American National Standard.
IAPMO’s S1001 Solar Standards Technical Subcommittee members met in a collaborative and open process to develop a solar water heating system standard that is completely transparent and reflects the technical realities of today’s solar heating marketplace.
The purposes of this standard are to establish generally acceptable minimum quality criteria for the design and installation of residential and small commercial solar water heating systems; to serve as a guide for manufacturers, distributors, architects, engineers, contractors, code authorities, program administrators and end-users; to promote understanding regarding materials, manufacture and installation; to form a basis for fair competition; and to provide a basis for consistency and fitness for use of solar water heating systems.
For 87 years The IAPMO Group has offered a comprehensive menu of services — product testing and certification, code and standard development, training and education — offering clients one-stop shopping for all of their solar, plumbing and mechanical needs. For a complete listing of available services, visit www.iapmo.org.
Communities across the United States joined IAPMO® in celebrating March4WaterTM and World Plumbing Day throughout March with proclamations, policy discussions, and educational events recognizing the critical role plumbing systems play in protecting public health and supporting economic growth.
IAPMO®, a global team of experts engaging industry and government for a safer built environment, has opened a 45-day public review period for a revised draft of its Manual of Recommended Practice: Construction Practices for Potable Building Water Systems, inviting industry stakeholders to review and comment.
Today, IAPMO launches March4Water 2026, its annual observance month, to raise awareness about how communities can build resilience to water stress. This year's theme, “Water Solutions for Growing Communities,” demonstrates how water efficiency offers a proven path forward for policymakers facing the challenge of supporting economic growth while protecting drinking water supplies.