I have 6 potable water cans, all military. 3 USA tan specter, and 3 British black containers. They are all HD construction vs the commercial offerings. I also have a old-non potable US GI steel can for fire safety use, if needed. I purchased the 6 for Y2K all those years ago when everyone was not sure what would happen when the clock struck 12. Living in the desert SW, it just made sense to be minimally prepared. Begging the neighbors for permission to DIP out of their pool was a last option, had that been necessary. There is also the states back country requirements of so many gallons of water to be carried for fire prevention along with a shovel and axe, when fire season is in effect. Depending on the state, there are fines that can be leveled. I purchased the high-end Swiss made backpacker water purifier, because i wanted something more than a Sawyer Straw.Here in Colorado I got the HydroBlu 4 gallon Jerry. Its hand pumped and filtered. Heres a link of a writeup I did. I can always find water here, so this fits the bill and I never run out. For our upcoming Moab trip, I will bring an extra 5 gallons. Discount if you use the link, I really dont care if you buy one or not but they are really cool.