(June 6, 2018, 1:26 PM EDT) -- SAN FRANCISCO — A California school district and a water company on June 4 filed two separate complaints against The Dow Chemical Co. in California state court, contending that it and other chemical companies are liable for contaminating the local groundwater with 1,2,3-trichloropropane (TCP) (Superior Mutual Water Company v. The Dow Chemical Company, et al., No. CGC-18-566968, Rio Bravo-Greeley Union School District v. The Dow Chemical Company, et al., No. CGC-18-566967, Calif. Super., San Francisco Co.)....