The Technos, Masterpiece and Mavello Water Ionizers come with a Faucet Diverter that attaches to the faucet by removing the aerator from the faucet and screwing on the Faucet Diverter.  You do not need to give up the use of your sink when you install your water ionizer.  Once you have attached the Faucet Diverter to your faucet, you can continue to use the sink as you normally do, then divert the water into the Water Ionizer when you wish to use it by turning the blue handle on the Faucet Diverter.  The Faucet Diverter that comes with your unit is a standard 15/16" (27 thread) male fitting, which fits most standard faucets.  Everything else you will need will be included with the unit when you receive it.  The Watershed does not assume any responsibility for the installation of the Water Ionizers it sells.  Nor does it assume responsibility or additional costs for the purchase of plumbing hardware expenses that may be incurred during the installation of any of its products, including Water Ionizers.