It's called Dr. Katz ozonator. The link is:
http://www.therabreath.com/productdetail.asp?cat=7&pid=128 It costs $150. I bought it on-line. Yes, the water tastes very fresh and good. When it's in the process of ozonating, it smells a little like bleach. But when the machine shuts off, that goes away, and there's no bleach taste at all.
Before I came across this, I tried using hydrogen peroxide (H2O2) based on the same principle of releasing oxygen into the body. I think it does the same thing, but I couldn't stand the bleachy taste.
Either process, the hydrogen peroxide or the ozonator, cleanses the body of impurities, and if taken regularly, is supposed to deep-clean toxins from the body. The ozonator was an investment that I'm glad I made. It's simple to use and the water tastes great. The water doesn't stay ozonated, though. You have to use it shortly after you ozonate it. They say you can use it to bathe in, as well, to benefit the skin. Just ozonate the bath water before you get in. You can even clean house with it. (It kills germs).