From NPR (Thomas Anderson Gustafson):
The International Bottled Water Association, ever sensitive to criticism that it’s wasting precious resources, has commissioned its first ever study to figure out how much water goes into producing one liter. The results, released this month, show that for North American companies, it takes 1.39 liters to make one liter of water.
That’s less than the global averages of a liter of soda, which requires 2.02 liters of water. A liter of beer, meanwhile, needs 4 liters of water, wine demands 4.74 liters. Hard alcohol, it turns out, is the greediest, guzzling 34.55 liters of water for every liter.
This, the bottled water industry says, is evidence that its product isn’t so bad. “Bottled water products are extremely efficient in terms of water use compared to some other packaged beverages,” says Chris Hogan, spokesman for the International Bottled Water Association…
Bottled water companies (along with many other beverage companies) should include the water in their supply chain, says Ertug Ercin with the Water Footprint Network. Ercin says a true water footprint includes all freshwater used in production, including the water used for packaging.
“Packaging makes a significant footprint,” he says, adding that three liters of water might be used to make a half-liter bottle. In other words, the amount of water going into making the bottle could be up to six or seven times what’s inside the bottle.
Drilling for oil to make plastic, Ercin says, uses a substantial amount of groundwater. And you need water to make the paper, too, he adds.
Still, Ercin notes, bottled water packaging uses far less water than soda, which needs extra water to grow sugar and make dyes.