O.C.’s Water Cycle 25% Treated Wastewater Treated Wastewater Wastewater Wastewater Untreated Imported Water Local Rainfall Santa Ana River Flow Santa Ana River Flow Used Water Upstream Rainfall and Snowmelt Prado Dam Orange County Groundwater Basin Orange County Groundwater Basin Water Imported from the Colorado River & Northern California Water Imported from the Colorado River & Northern California Treatment Treatment 2.5 Million Water Users 0.6 Million Water Users North and Central Orange County 90% (MWD) Southern Orange County MWD Direct 75% of water demands of water demands of water demands of water demands 10% Local groundwater basins Local groundwater basins Recycled water for irrigation Recycled water for irrigation Advanced Purified Water & Pacific Ocean