Reverse Osmosis

The reverse osmosis process depends upon a semi-permeable membrane through which pressurized water is forced. Reverse osmosis is a valuable purification process when mineral-free water is the desired end product. Most mineral constituents of water are physically larger than water molecules. Thus, they are trapped by the semi-permeable membrane and removed from drinking water when filtered through a reverse osmosis system. Such minerals include salt, lead, manganese, iron and calcium.