A person can survive for several days without food, but only for a short time without water. Survival Kits online sells a 55 Gallon Water Preserver which can be used in water barrel drums. As we have learned from Japan's earthquake, clean fresh water can quickly become sparse, when the local water supplies are cut off. This water preserver is a concentrated mix that is recommended to use with a 55 gallon food safe drum, and stays fresh for 5 Years. Water Preserver is the first and only prod (Read More....)