My wife and I were tired of buying bottle water, both by the small bottle and the 5 gallon ones. During the winter I slipped carrying a 5 gallon bottle. Craig and the gang at Water Treatment Systems of KC, sold us a reverse osmosis like dr oz recommends. Was installed the same week as ordered on the phone. We love it and will never go back to buying 5 gallon bottles service. Our coffee never tasted better!