Before you dismiss me as another loon, consider some facts that you may not be aware of.
Let’s start with bottled water: 
Although it sounds crazy, there are no government standards that mandate bottled water be any purer than tap water. Not one. But don’t take just my word for it. No less an authority than the FDA states, “Companies that market bottled water as being safer than tap water are defrauding the American public.”
And although you may not agree with everything Ralph Nadar says, his study group, exercising the Freedom of Information Act, reviewed thousands of documents and concluded with the somber assessment that: “U.S. drinking water contains more than 2,100 toxic chemicals that can cause cancer.”
Third, although many home water purifiers are what are called “reverse osmosis” systems or “distilled water,” these have major drawbacks. The answer is simple nature and science. You see, the human body evolved to drink de-salinated water, like that which comprised lakes, rivers and streams before pollution became a major factor.
In this water there existed traces of minerals that are vital for our health. Minerals such as calcium, magnesium and potassium. There are literally no places on earth where demineralized water exists.
But if you buy one of the extremely popular reverse osmosis home water purifiers, you are drinking demineralized water. Although these systems may remove the bad stuff you don’t want, they unfortunately also remove the good stuff–such as minerals–that you do want and need.
Fourth, even water purification systems that remove toxic contaminants do not do so equally. This is why you should look for a system that employs multi-stage filtration. Many sub-par filters will fail to safeguard against chlorine, lead, and VOCs (volatile organic chemicals).
If you’re already going to spend the money to provide for the health of your family, then you should make sure you are getting the best product you can get.
Your next step? To take what you’ve just learned to spend some time to compare home water purifiers. After doing so, you’ll realize, as I do now, that there are many so-so products on the market, a few really good ones, and only a tiny handful that stand head and shoulders above the rest.
Recommended resources for home water filtration products and supplies:
