Lauren Woehr hands her 16-month-old daughter Caroline a cup filled with bottled water at their home in Horsham, Pa. EPA testing has found significant amounts of harmful PFAS chemicals in public water supplies in 33 U.S. states.

Lauren Woehr hands her 16-month-old daughter Caroline a cup filled with bottled water at their home in Horsham, Pa. EPA testing has found significant amounts of harmful PFAS chemicals in public water supplies in 33 U.S. states.