Pat Mulroy is retiring after 25 years of changing people's perceptions about water in the southwest.
California is coping with the worst drought in recorded history. California's governor has asked state residents to cut back water use by 20 percent.
The rest of the Southwest is also experiencing extreme to severe drought.
In the first part of a water series we’re calling Pipe Dreams, Laurel Morales from the Fronteras Desk went to Las Vegas to talk to a woman who has redefined water management in the west, outgoing water czar Pat Mulroy.