Water preparedness is understanding how to store water, filter water, and test water to insure that it is safe to use in a disaster. Store water in 55 gallon drums and smaller containers for immediate use. Be prepared with a good quality water filter to purify water from contaminated sources. And know how to test the water you are drinking to make sure that common contaminants such as giardia, e. coli, and cysts are not present. Understanding water preparedness and having the right water treatment equipment will keep you safe from illness.