Since ordinary water filters do not remove minerals and other impurities (click Here for details ) from the water a Reverse Osmosis system is recommended where purified water is required, including your home. Reverse Osmosis is a process of forcing tap water through a semi-permeable membrane, forcing dissolved solids and other impurities out of R.O. system into drain. Some areas of the country have a higher mineral content in their water than other. When the concentration of these dissolved solids get above 230 mg/l (ppm), the water can get unpleasant taste. Everything made with R/O water tastes better namely coffee, juices and any cooked food in your family. Even ice cubes are harder and clearer, free of funny taste.