What are the challenges associated with creating a large-scale water recycling facility in San Diego? We speak to Marsi Stierer, with the San Diego Public Utilities Department, about what the city is doing to explore the possibility of expanding its water reclamation program in the future. We also talk to Bruce Reznik, with San Diego Coastkeeper, about why he thinks we'll need to use more recycled water in the future. And, we talk to Mike Markus, from the Orange County Water District, about why their groundwater replenishment system is unique.