Is this a filter or ion exchange unit? Many people are unnecessarily afraid of tap water these days in my opinion. To me it's just hype, all these supposed "toxins" and carcinagens. I think our water is very clean and you'll probably get way more of these toxins from other sources anyway. So I don't think anyone needs these filters to protect themselves from bad water. However, water of today tastes horrible and is loaded with chlorine (of various forms) mainly because of people's paranoia with bacteria and the water suppliers fear of being sued if their is a case of bacterial infection from the water. And all this chlorine can't be good for you. It's a strong oxidizing agent and will "age" your tissues. I used to drink tap water, but since my wife got a pitcher filter, I really do like it better. So, my though is, you probably don't need it to save yourself from "toxins" and "poisions" as the vendor probably claims, however to escape from so much horrible chlorine and if you prefer the taste then (depending on the price) why not. Water is good for you and you should drink a lot. It's better than other drinks.