LOS ANGELES--(BUSINESS WIRE)--Southern California’s primary provider of drinking water plans to turn to the sun to help power one of the nation’s largest water treatment plants. Metropolitan Water District’s Board of Directors Tuesday (June 9) voted to invest $12.6 million to develop a 3-megawatt solar power generating facility on 15.5 acres at the district’s F.E. Weymouth Water Treatment Plant in La Verne. “Our board recognizes using clean, renewable energy to help power the Weymouth plant is