If you like that bottled water, you have been ripped off.
Pepsi's Aquafina and Coke's Desani brands of bottled water are: Tap water -- the bottles are filled using "purified water sourced from public reservoir" (ie. the same thing you'll get if you go and buy a Brita pitcher/filter and fill it up using tap water.) Yay, so not only are you paying for water for your household use, but you're paying an extra premium to get the same water to drink. Now, Pepsi is going to be labelling the source of water that goes into bottles. Coke will be more coy about it and only tell people about it on their website.
Bottled water hurts the environment and for no good reason. It takes a lot of energy to bottle and ship water around. It also takes a lot of landfill space because of all the discarded plastic bottles. Why hurt the environment when the water coming out of your tap is the same as the water in those bottles? Think again next time you're going to get ripped off paying pay for bottled water.
How much water is sold? "U.S. consumers spent about $15 billion on bottled water last year." Yikes! And it is not really for health or taste reasons, apparently, it's for "convenience" -- in other words: People are too frakking lazy to fill up a reusable bottle with water before heading out. Sigh.