Just reading that article, which can sometimes lead to exaggerations or "under exaggerations" from a reporter or network, it seems at some point the people of Las Vegas and surrounding areas will have to change how they use water. But the rate that it is falling means its not tomorrow though I think the article was sort of alluding to the rate possibly getting faster. It said farmers will be the first to have to change or move somewhere else.
Not sure we are alive to see it but I think it quite possible that many areas people consider retirement areas will become less habitable due to climate change. Florida, Southwest, and Cal. Sort of the reverse of the map you see at the end of the movie "The Day after tomorrow". Southerners will have to move north and east.