If there was one upside to the severe drought that plagued California for seven years, it was how the lack of rain and dirty runoff improved beach water quality. But ocean pollution has surged once again at some Southern California beaches because of an unusually wet winter and the effects of the massive Woolsey fire, which added pollutants and worsened runoff. The findings, contained the annual Heal the Bay report card, underscore how much ocean water quality is tied to other environmental factors.