California’s prolonged and ongoing drought has at least one positive outcome. It has prompted water officials across the state to quickly develop new sources of water — and one of those new sources is flushed water.

The Orange County Water District is leading the nation in wastewater treatment to replenish groundwater supplies — and that project is expanding now, designed to eventually supply water to 2.4 million people, about 40 percent of all water needed in Orange County.