my previous employer got rid of our filtered water service and put in one of these systems. I think they paid about 700 bucks for it. we never noticed any difference. The water tingled a little bit when you drank it??? not sure why. The machine, a plastic box sat on the counter and was bigger than a cereal box. you had to run it for about 30 seconds before you could drink it. The machine played a tune while the water ran, when the tune stopped you could drink what came out of it. all smoke and mirrors to me.....