DIY Hillbilly Water Bottle Filter [STEP-BY-STEP]

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4. This step of the filtration process requires crushed charcoal. Now, maybe you’re thinking, “What!? I’m not wagging around a 20lb bag of charcoal in my bug-out bag!”

Don’t worry; you can make charcoal by simply taking well-charred wood out of the nearest fire pit, wrapping it in your bandana, and then smashing it with a hammer or the back of a hatchet. Think popcorn size, not crushed to smithereens.

Take a pile of the charcoal and pour it on top of the cloth in the neck of your bottle. Shake the bottle around a bit until the charcoal pieces settle. You’re looking for 1.5” to 2” layer of charcoal in your bottle.

5. Next add a 1” to 1.5” layer of fine sand. Playground sand is perfectly good here, as is beach sand on some Gulf Coast beaches.

The important thing at this point, on top of the charcoal, is to create a gradient for the water to travel through that gets finer and finer until it reaches the charcoal.

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C.E. Rip Van Noy says:

Great article fellas. One little tip from an 80 year old survivalist. Make sure that after every few filters that you pour a cup of boiling water through the filter system. it takes of any little survivors that might be lingering around thinking they escaped the process. Keep up the good tips.