The Metropolitan Water District’s Board of Directors Tuesday voted to spend $14.7 million over three years to continue its advertising and public outreach campaign promoting water conservation. The vote approved a contract with Los Angeles-based firm Quigley-Simpson & Heppelwhite to lead a new campaign that will feature ads on television, radio, streaming radio, newspapers, billboards, buses and social media. “These efforts have produced results. Our research shows attitudes toward conservation have changed, awareness has increased. But we still have work to do,” Metropolitan board Chairman Randy Record said.