Please do not assume that garbage bags are safe for water, beverages or food. Most sources agree that the plastic that they are made from contains pesticides to keep insects from burrowing their way in (or out), and that food stored in garbage bags has caused sickness in those eating it. <br><br>I cannot say from my own empirical knowledge that this is the truth, but I've heard it often enough, from enough varied sources, that I would be very hesitant to use them this way. Apparently there is a reason that people storing food never use them, even though they're very cheap and very available.<br>