About the impact of bottled water on the environment, allwater.org says:

The bottled water industry causes a severe strain on the environment, but solutions to this environmental damage significantly lessen the quality of water in the bottles.

Not quite the effect we’re hoping for when we uncork a bottle!

Also, take a look at the Web site for Bottle This, a P.O.V. episode on the topic. I found the site especially interesting because it combines hard data with personal stories.