The drinking water of some 14 million Americans is contaminated with a cancer-causing industrial solvent called Trichloroethylene, or TCE, according to a new EWG analysis of tests from public utilities nationwide. EWG’s Tap Water Database, which aggregates test results from utilities nationwide, shows that in about half of the systems it monitors, average annual levels of TCE were above what some health authorities say is safe for infants and developing fetuses.