DRINK UP!
How to ensure you always have clean water in the backcountry
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#4 ULTRAVIOLET LIGHT
With enough time—six hours at least—the sun’s UV rays will kill all pathogens in a bottle of water. You can speed up the process with a portable UV-treatment system, but it will require batteries (and extras) and will only work in a compact container—something to consider when you’re packing for a days-long outing.
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