Why it makes little sense to regulate rainwater barrels in the dry western U.S.

Why it makes little sense to regulate rainwater barrels in the dry western U.S. Courtesy of THE CONVERSATION.COM/USA, March 25,2016
http://theconversation.com/why-it-makes-little-sense-to-regulate-rainwater-barrels-in-the-dry-western-u-s-56319