A California Senate committee has voted in favor of a bill requiring that water providers notify their customers if they detect a class of chemicals called PFAS in drinking water. The Environmental Quality Committee passed AB 756 on Wednesday, 6-0. The bill now heads to the Appropriations Committee. If it passes there, the full Senate will vote on it.  PFAS, which stands for per- and polyfluoroalkyl substances, are waterproof, grease-repellent, and heat-resistant chemicals that are fairly ubiquitous, found in popcorn bags, firefighting foams, nonstick pans, makeup, and even food like ground beef. Scientists estimate there are 4,700 PFAS, some of which have been linked to cancer, infertility, developmental disorders, increased cholesterol and weakened immunity.