Vegas is very water efficient. Those fountains and golf courses use reclaimed water. The problem is the absolute amount of water demand is still going up. In a

Vegas is very water efficient. Those fountains and golf courses use reclaimed water. The problem is the absolute amount of water demand is still going up. In a desert. Vegas' water utility has an intake pipe at the very bottom of Lake Mead so they will go dry last. They dump their treated wastewater into the Las Vegas Wash so that they can get credit to draw more water. They bought up nearby land to get the water rights. But actually capping system wide water usage directly or by limiting urban growth is economic and political suicide.