Prepping water for long term is one of the most important things you should be storing. There are lots of options for how to store water. I personally recommend 55 gallon drums with wheeled casters. And don't forget to have a quality wrench, and either a siphon pump or hand pump.
This is just a quick video to cover the basics of my water storage. Nothing to special just 4, 55 gallon drums stored in a stack. I bought them from Tank N Barrel in Apache Junction: http://tanknbarrel.com/ The only news article I could find that dated back to the gas line brake: http://www.doney.net/aroundaz/gas_lines.htm Most of the links are expired due to it's age.