In many areas of the country houses still run on well systems and in these areas water filtration systems can help to make sure the water you are drinking is clean. Drinking water systems can be installed under the sink and attached to the water line to insure the best water at all times. These systems are often used in cities where water is not as fresh as others but they can be used to make any household water better. Water filtration systems are a great investment if you ever wonder about the quality of water you are drinking.