Archive for August, 2013

How to Make a Field-Expedient Water Filter

Friday, August 30th, 2013

We all know how important water is in a survival situation. Without it, you don’t stand to last long.

One question I get on this blog from time to time is:

“If I were stuck out in the bush how would I go about making a field-expedient or homemade version of a water filter similar to the commercial varieties made by companies like Katadyn or Berkey.”

I assume they mean making a filter that can eliminate biological nasties like Cryptosporidium or Giardia.

If that’s what you’re after, boiling is the only tried and true method of water purification out in the bush.

The Limitations and Uses of a Field-Expedient Water Filter

In reality, there is no way to get a field-expedient water filter to replicate the filtration performance (in terms of microorganisms filtered out) that you’d get out of a commercial one, but it DEFINITELY doesn’t mean these filters are useless.

In fact, if you plan on using the boiling method with dirty, stagnant water, you’ll have some nasty tasting and discolored water to deal with (even if it is “purified”).

And this, my friends, is where a field-expedient filter would come in real handy.

How to Make a Field-Expedient Water Filter

So, how do you make one and how effective is it really, and how do I make one?

Well, I just uploaded a video to show you how easily it’s done (click on the link or watch below):

How to Make a Field-Expedient (aka BushCraft) Water Filter