Emergencies happen and when they do you never want to be without water. It is the one basic in survival: your water must be clean and filtered. Here is a way to make sure it is:

We are glad the survivalist added the bit about boiling your water before drinking it because even with all that filtering we’d be a little leery of drinking what was once filthy water!

Just think, though, with items like a water bottle, a little sand, charcoal and rubber-bands, you now can have drinkable water! Cheers!