What a great machine and fantastic water filter/purifier. The Osmio Zero is compact, neat looking and easy to use. I drink lots of water for my health. When I read recently that the government here in England plans to fluoridate everyone's mains water I was horrified. I searched for a suitable water filter and the most appealing was this system, for its functions, looks and at an affordable price too without the need for expensive and space-taking plumbing, and it fits just great on a countertop in our small kitchen. The water is refreshingly pure, plus wonderful magnesium together with some calcium is added by a post-filter while the pre-filters remove all of the unwanted stuff. I had a teething problem with my system, apparently due to the fact that the property where I live did not include a Residual Current Device in the consumer unit. The friendly, helpful staff at Osmio quickly and efficiently dealt with the problem immediately. I had never intended to use the instant hot water facility built into the system, but after my first coffee I made using this pure hot water, I was hooked. This R.O, machine plus my Osmio Hydrogen water generator, the Osmio Duo Water Bottle, work fantastically together. Thank you all at Osmio.