ARCSA: The mission of The American Rainwater Catchment Systems Association is to provide resources and information on rainwater collection, promote the advancement of rainwater conservation and work with state, county and other local governmental units in promoting rainwater catchment. www.arcsa.org ARCSA Foundation: The Mission of the ARCSA Foundation is to promote sustainable rainwater harvesting practices to help solve potable, non-potable, stormwater and energy challenges throughout the world. http://www.arcsafoundation.org/