Among the myriad, here is another reason, posted at Trout Undergound
Corporations rape the groundwater resources, just so they can put the words "spring water" on the bottle... hard to believe, but I guess when you think about it for a second - believable.
Stop drinking that stuff man! Get a Brita filter, or just drink your tap water. Bottled water is a flat out scam... Isn't it funny that folks will complain about gas prices (the sun's energy stored and compressed over millions of years) while tipping a bottle of water to their lips for which they paid ~$6 per gallon? We just don't make sense.