There are a number of states that “forbid recycling water,” like this article from the Las Vegas Sun indicates:
Agency opposes water recycling at homes
Return less to Lake Mead, it says, and we’ll get less out
http://www.lasvegassun.com/news/2009/apr/13/authority-opposes-recycling-homes/
or, this one from the New York Times:
It’s Now Legal to Catch a Raindrop in Colorado
http://www.nytimes.com/2009/06/29/us/29rain.html?_r=2&th&emc=th
These articles point out that as long as we are using gray water or rain water for gardens and washing cars, etc, is just another form of throwing water away. Though there may be a lot of loss in the complete circuit from the home to the municipal waste treatment plant and back to the home, at least there is some water reclamation.
But, that is how RECLAMATION is different from REUSABLE WATER. True "reusable water" is a much smaller loop - one household, for example that uses a portion of its water over and over again.
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