The proposed class-action lawsuit, which was filed Wednesday in Los Angeles County Superior Court, claims that deceptive advertising has led customers to falsely believe that Brita products filter such contaminants as arsenic, nitrate, hexavalent chromium and certain PFAS, or “forever chemicals,” from tap water.īrita is owned by Clorox Co., which is headquartered in Oakland. A lawsuit filed against the maker of some of the nation’s most popular water filtration systems has accused the Brita company of falsely advertising that its products remove or reduce hazardous contaminants from tap water.