NEW YORK - Exxon Mobil Corp. said Oct. 27 that it reached a $17.5 million settlement with plaintiffs in 50 actions alleging methyl tertiary butyl ether (MTBE) contamination in their water supplies in the multidistrict litigation court based in New York (In re: Methyl Tertiary Butyl Ether Products Liability Litigation, No. 1:00-1898, MDL 1358; Village of Island Lake v. Amerada Hess Corp., et al., No. 04-02053, S.D. N.Y.). From Mealey's Pollution Liability Report