I don't buy bottled water. I buy generic powerade/gatorade and refill the bottles with water when I need it, or (gasp!) use my 3 nalgene water bottles for the same purpose.
Yes, I like filtered water better than tap water.. but mostly because it's colder since I have a filter jug that goes in the fridge. I still drink tap water a lot.. at least a cup every time I brush my teeth or use the toilet, and more to take my vitamins and such.
I drink out of the garden hose during the summer, so I'm not one to be snobby about water taste.
