This blog(ger) is not prone to order people around, but it is going to now. STOP DRINKING BOTTLED WATER. If you live in a reasonably well taxed/well run town in the first world, just drink from the tap. If your town’s drinking water sucks, get a water filter/purifier, use a refillable drinking water system, and lobby your town council hard to improve their drinking water infrastructure so you can drink from the tap.
Pablo Calculates the True Cost of Bottled Water TreeHugger
In summary, the manufacture and transport of that one kilogram bottle of Fiji water consumed 26.88 kilograms of water (7.1 gallons) .849 Kilograms of fossil fuel (one litre or .26 gal) and emitted 562 grams of Greenhouse Gases (1.2 pounds).
Yes, he corrected his calculations down to 6.7 gallons, but that is an awful lot of wastage, criminal wastage in fact.