In the past the Berkey Light™ systems were made of food grade polycarbonate that had been approved by the US Food and Drug Administration. Some research suggests that polycarbonates have been known to leach BPA (Bisphenol-A) when either exposed to High Strength Industrial Grade Alkaline Detergents or when they are repeatedly exposed to temperatures in excess of 192 degrees Fahrenheit (over 88 degrees Celsius); neither of which occurs when utilizing the Berkey Light system.
New studies concerning the possible leaching of BPA are ongoing. There has also been a wealth of mis-information circulated over the airwaves and the Internet.
To forestall any concern, the manufacturers of the Berkey Light determined that it is in the best interest of their customers to begin utilizing an alternative to the polycarbonate previously used to produce the Berkey Light system. Fortunately, in 2008, a new product was developed that is BPA FREE. The manufacturer has replaced the polycarbonate material with this new material to alleviate any concerns that their customers might potentially have. Not only is this new copolyester highly durable and dishwasher safe, it is also scratch, stain, shatter and odor-resistant.