How much does bottled water really cost?

It takes 3 liters of water to make 1 liter of bottled water.
-In 2006, Americans bought 31.2 billion liters of water.
-Almost $900,000 tons of plastic was needed to make the bottles, requiring more than 17 million barrels of oil.
-Bottling the water created more than 2.5 million tons of carbon dioxide.

Source: www.pacinst.org

And in the end you're probably just drinking bottled tap water. mmmmmm, so refreshing.
Get a reusable bottle. The one I use came from the dollar area at Target and goes everywhere with me from the gym to church.