Much as I dislike bunny-huggers and tree-****ers, I have to admit that here, in Aridzona, most of the push to get rainwater collection systems to be common-place is from the more leftist leaning bunch. I know of whole subdivisions in some areas of the state, without accesable aquifers for well water, which require each home to have rainwater collection systems.
They make sense, no mater where you live. Sorry about those states with antique water laws. Of course, there are several ongoing litigations over water rights here in State and Federal courts. Ah me oh my. What a place.
By the way, thanks to whomever is responsible for my upgrade. I just noticed I'm a "journeyman".