Water Replenishment District

Water Replenishment District of Southern California) is the largest groundwater management agency by population in California, serving more than four million residents across Southern Los Angeles County. The organization is responsible for protecting, replenishing, and managing local groundwater supplies through sustainable water programs, recycled water initiatives, conservation efforts, environmental education, and advanced water treatment projects. WRD is widely recognized for its leadership in water sustainability, infrastructure innovation, and long-term regional water security.