I just read some alarming news on Reuters.com, well alarming to me at least. Did you know that 25% of all bottled water is actually just repackaged tap water? I definitely did not know that.
Nor did I know this: Because bottled water is considered a food, it is regulated by the US Food and Drug Administration. Tap water is regulated by the U.S. Environmental Protection Agency. However, both types of water are subject to testing for contaminates. Furthermore, since 60 to 70 percent of all bottled water in the U.S. is packaged and sold within the same state, it is exempted from the FDA regulation. And 1 in 5 states do not regulate that bottled water. Basically, it's a crapshoot.
22 percent of all the bottled water tested was found to have man-made chemicals, bacteria and arsenic. It doesn't end there, tap water in the 19 U.S. cities tested was found to contain arsenic, lead, and pesticides. Boy let me tell you, nothing says refreshing like arsenic. Luckily for us, most healthy adults' systems can handle the contaminants but this is not always the case for those with weakened immune systems (like children and cancer patients).
So what's the moral of the story? Bottled water is not necessarily better. To get the most out of your water, buy bottled water treated with reverse osmosis and/or drink distilled water or city tap water with a filtering system certified by the National Sanitation Foundation.