When water comes into your home it has two basic uses: Consumption and everything else. Obviously, we all want the water we drink to be of better quality than the water we use to wash our car or even to do the laundry. Whether it is from a public source or a private well, the quality of the water coming into your house is only OK. Reverse Osmosis (RO) is a very low-energy method for removing almost everything from water that is not water. The result is some of the best drinking water available right from a tap on your kitchen sink.