The Waterstone Ultimate Under Sink System gives you filtered, great tasting water with the security of kitchen in one under sink package. The Waterstone Multi-Stage Filtration System is compact and has been designed to provide optimum filtration in a single cartridge unit. When used with a Waterstone Filtration Faucet, removes sediment, chlorine, bad taste and odor from municipal drinking water. The Hot Tank dispenses steaming hot water instantly. Perfect for making hot coffee, tea, cooking or sink cleanup. Waterstone”s Safety Valve Leak Detection Units are ideal for minimizing water damage when these disasters occur. Our Leak Detector automatically shuts off the water source when it detects moisture. Once the valve shuts off, the unit sounds off with an audible alarm, like a smoke detector, to let you know of a problem.