How to find and prepare safe drinking water—anywhere, any time! Clean drinking water may be the last thing we think about day to day—but it’s the first thing we need in an emergency. Now, survival expert and biologist Joe Vogel explains how to find, treat, and store safe drinking water—even in the most extreme conditions. Small enough to take anywhere—and broad enough to cover everything—this is a vital manual for backpackers, survivalists, and anyone who may need to know how to create their own drinking water.