In the 1900s, San Diego Bay supported great biodiversity. After years of neglect and poor planning, industries polluted the bay with more than 20 types of pollutants, endangered surrounding communities with 36 types of air contaminants and destroyed 90 percent of the bay's mud flats and 78 percent of its salt marshes.

For more than 30 years, Environmental Health Coalition has confronted environmental injustices in the San Diego/Tijuana region.