On September 25, 2014, the U.S. Environmental Protection Agency (EPA) proposed new requirements aimed at decreasing discharges of dental amalgam (which contains mercury and other metals) into our public water. At this time, some studies show that more than half of all mercury detected in public water treatment plants is from fillings. If approved, the new requirements will call for dentists to control mercury discharges by installing amalgam separators and implementing certain other practices....