I have always wondered the same. I know once they get the water it is cleaned and recycled by the Casinos for things like the fountain at Bellagio and other things. A lot of the water running thru the pipes will be recycled thru treatment plants like anywhere else. BUT there will still be A LOT that they will not recover. Vegas doesn't seem to worry about small details like WATER though. That is one of the main things that worried me about moving out here. Anyone that doesn't think it will go dry should ride out to Lake Mead.