Our unit has been designed to reduce plastic use and plastic contact with water as much as possible. Most of it is made of chemical free porcelain with lead free glazing. The filtration cartridge is made from hand blown lead free Pyrex glass. The only ''plastics'' in direct contact with water are silicone gaskets and some polypropylene separator parts in the filtration cartridge. Polypropylene is known as one of the most neutral and has been chosen because it is one of the most stable plastic available.