CHICAGOA new American National Standard to provide design and installation requirements for rainwater catchment systems is being jointly developed by the American Rainwater Catchment Systems Association (ARCSA) and the American Society of Plumbing Engineers (ASPE), with sponsorship support from the International Association of Plumbing and Mechanical Officials (IAPMO) and NSF International. It is open for public comment.
ARCSA/ASPE 63: Rainwater Catchment Systems, a standard that is already in existence and referenced in the ANSI/IAPMO Uniform Plumbing Code (2012), has gone through extensive revision using the ASPE standards development process accredited by the American National Standards Institute. The draft revisions are open for public comment until 11:59 CDT on May 3, 2013. To view the draft standard and submit a comment, visit
ASPE is the only professional organization devoted to the training and certification of plumbing engineers and designers. ASPE and its 6,000 worldwide members are dedicated to protecting the health, welfare, and safety of the public through the dissemination of technical data and information to expand the base of knowledge among plumbing engineers, designers, contractors, code officials, inspectors, and manufacturers. Additional information is available at
The American Rainwater Catchment Systems Association is a 501(c)(3) nonprofit organization that was founded in 1994 by Dr. Hari J. Krishna in Austin, Texas to promote rainwater catchment systems in the United States. Its membership consists of professionals working in city, state, and federal governments, academia, manufacturers and suppliers of rainwater harvesting equipment, consultants, and other interested individuals. Additional information is available at