Tiangtech&reg; Ozone Water Purifier System | Oxygen and Ozone Water Cleaner Ozone Generator which attaches right onto your kitchen faucet tap This unit is powered by an internal hydroelectric generator that produces the O2 and O3. This faucet ozone generator attaches to the water tap to help purify your home water supply. This model is considered by experts to be one of the most powerful and convenient sterilizing systems on the market today Ships from Hong Kong, normally arrives within 7-15 business days