Here is something to think about as you are updating your 72 hour kits.
"First, people should be more concerned about the quality of the water they are drinking rather than the container it’s coming from. Many people do not feel comfortable drinking tap water, so they buy bottled water instead. The truth is that city water is much more highly regulated and monitored for quality. Bottled water is not. It can legally contain many things we would not tolerate in municipal drinking water."
Point being there are risks associated with drinking bottled water that don't exist for tap water. I have nine gallons of distilled water packed away for my little family. What factors should I take into account when storing this stuff (i.e. keep out of direct sunlight, keep cool, etc...)?
Myth of Dioxins and Plastic Water Bottles.