As guardians of an important underground resource, the leaders of the Water Replenishment District of Southern California find one of their great challenges is best described by an old adage: Out of sight, out of mind.
The WRD oversees the health and management of California’s West Coast and Central groundwater basins — large underground reservoirs that supply 40 percent of the water for 4 million people living in a 420-square-mile area covering southern Los Angeles County.
If the people served by the WRD think about water supplies at all, what often comes to mind is the extensive system of aqueducts that import
