Wine’s Mammoth Water Footprint: 120 Liters To Make One Glass?

I ran across a surprising article in the Economist this week (Thirsty Work) which tells me that it takes 960 liters of water to make a single liter of wine. Or 720 liters of water for a 750 ml bottle.

That Economist article was based on data obtained from the Water Footprint Network which  told me that wine has a mammoth water footprint — considerably larger than most NBA players:

“Water footprint: 120 litres of water for one glass of wine. One glass contains about 125 ml of wine. Most of the water behind the wine is for producing the grapes.”

SITE SHORT ON SUBSTANTIATION

After considerable clicking around, I found no solid data. Do any readers have an idea if this is accurate?