Feel confident with every sip that you are providing the best quality water for you and your family. The Aquifer reverse osmosis (RO) water purification system effectively reduces contaminants including arsenic, fluoride, TDS, bacteria, virus, lead, mercury, chlorine, and pharmaceuticals in your cold water. Install your Aquifer reverse osmosis system with a KOHLER reverse osmosis-compatible Wellspring beverage faucet, available in five finishes and Traditional or Contemporary styles.