How Bottled Water Works
For a natural resource that most of us have access to for minimal cost, water is doing pretty well as a revenue generator. The bottled version of the stuff is currently an $8 billion industry in the United States alone, with Americans drinking about 7 billion gallons of it in 2005. That’s compared to hundreds of billions of gallons of tap water, but for a product that can cost up to 10,000 times more than its municipal counterpart, it’s still an impressive marketshare.
So what’s the appeal? The three most common reasons given by bottled-water drinkers are healthiness, purity and taste. As we’ll get into later on, the first two reasons are somewhat misguided, and the third is open for debate. For a seemingly basic food product, bottled water has generated its share of controversy. Some of it focuses on the federal and state regulations governing the industry, some of it goes deeper into the ecological implications of bottling and transporting billions on billions of gallons of something that flows freely from the tap, and some of it calls into question the labeling practices of bottled-water companies.
http://science.howstuffworks.com/environmental/green-science/bottled-water.htm
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