Joe Mathews, California editor of Zócalo Public Square, talks with Westlands Water District Chief Deputy Manager Jason Peltier, Chance of Rain publisher Emily Green, environmental attorney Peter Culp, and Steven Solomon, author of Water: The Epic Struggle for Wealth, Power, and Civilization, about how much water should cost. In a time of scarcity, this is the most important question, and it's one that's being wrestled with all over the world today.