I prefer to have distilled water because I read up on the negative effects of fluoride in our tap water. Even the filtered water does not live up to its hype. From what I read and been told none of the filters on the market remove any of the fluoride. This is my research and I encourage you to do your own. I'm trying improve my own health. I want to know what is going into my body. Let's all get healthy together. Here is a little joke to add some healthy laughter.....A jumper cable walks into a bar and asks for a beer. The bartender says Okay! but don't START anything!!