Overpumping in California's San Joaquin Valley has caused one section of farmland to drop 29 feet. Tucson, Albuquerque and Las Vegas are slowly sinking. In the Southeast, drought has further depleted aquifers, letting in seawater. Desperate Florida authorities seek federal clearance to replenish underground water with untreated runoff. Most experts believe people won't save water until it costs what it is actually worth.
Water is now essentially free.
Most consumers pay only the cost of treatment and delivery. In some places, it is even illegal to meter water. But putting a value on water is touchy. Las Vegas authorities, for instance, insist their lavish use of water draws big spenders. Casinos among blazing lights and lagoons bring in far more than wheat and alfalfa.