While the demand for water increases and supply decreases due to droughts and other causes in the Colorado River basin, Las Vegas is a model for water recycling that many other cities will need to follow in the future. Water recycling is a process to collect and treat waste water that is returned to Lake Mead. The lake supplies 90 percent of the valley’s water and is in critical condition due to 15 years of drought dropping the lake to 38 percent of capacity. 

So to help make sure Vegas can continue to quench it's thirst, the Southern Nevada Water District proposes to build a 250-mile pipeline from rural northern Nevada to claim groundwater from the Spring Valley. Efforts to take water from Utah farmers were thwarted.

So it's a very safe bet that Vegas will have adequate water supply but prices will continue to rise. You get billed for every gallon of water you use so think about shutting off the water while you brush your teeth. It’ll save you some money!