The Niagara+ Ultraviolet System mounts under your sink, out of sight. A self-piercing saddle valve attaches to your cold water input line. You will have to drill a hole in your countertop to attach the long-reach drinking water faucet. The UV lamp plugs into a standard 100 volt electrical outlet. For the do-it-yourselfer, it is a simple project. An installation guide will be provided with your unit.