The Del Mar Fairgrounds says it’s stepping up its efforts to improve water runoff. On Wednesday the 22nd District Agricultural Association debuted its $15 million water quality initiative. This project started in 2017 and is a functional storm water retention and treatment system. The fair says it’s a multi-step water treatment facility that includes a retention lake located within the racetrack infield, a constructed biological wetland designed to naturally filter water and a treatment and testing center. This will help keep contaminated water from polluting nearby oceans and lagoons. MORE: https://www.cbs8.com/article/news/local/water-quality-initiative-complete-at-the-del-mar-fairgrounds/509-b0aeafb5-25df-47db-b301-531a6907eedb