Approximately 370,000 Californians’ drinking water is highly contaminated with chemicals that harm human health, according to an analysis led by researchers at the University of California—Berkeley and the University of California—Los Angeles.
The study, published Dec. 22, 2021, focused on the three pervasive chemical contaminants: arsenic, nitrate, and hexavalent chromium. Arsenic naturally exists in groundwater, whereas nitrate and hexavalent chromium are often produced in agricultural and industrial activities.
