Directly from Yahoo's article, "Experts still agree that drinking tap is preferable to drinking bottled water. Bottled water is much more expensive than tap, it takes a huge toll on the planet, and it's not necessarily any safer than tap. "Bottled water is not regulated in the same way as tap water," says Olga Naidenko, a senior scientist at EWG. "With bottled water, consumers often do not know what they are getting, and 25 to 40 percent of bottled water on the market is simply tap poured into a bottle."
Knowing what's in your water is the key. Once you know which contaminants are present, you can find the best filter to get rid of them. EWG put together a thorough buying guide to help you find an affordable water filter that works for you. You can read the guidelines or search for products based on contaminants you want to get rid of."
Here is also a direct link to the National Drinking Water Database that provides details of what is in the tap water of your city.
