By John A. Heatherly, Author of The Survival Template (retails on Amazon for $6.99)
photo from AFR 64-4, Figure 19-15, page 189
A variety of events can contaminate ordinary, working sources of water. For example, rainstorms, or even worse, hurricanes, can pollute tap-water that is normally clean. In other cases, a pond or puddle may be used as a water source. With a little improvisation these problems can be remedied, allowing for better-tasting, better-smelling water. NOTE: This type of filter will NOT purify water, but is meant to be used in conjunction with a purification method (boiling, iodine, bleach, etc ….)
The figure above illustrates a three-stage water filter built out of a tripod and porous cloth. This simple device is highly effective in cleansing drinking water. I have seen a version of this constructed out of a plastic milk jug that washed up on the beach (a large, plastic soda bottle would work as well.) In this case, the bottom of jug was removed with a knife and a piece of cloth was placed over the jug’s mouth. The inner layers of the filter were the same as in the image: charcoal, sand, and grass.
Projects such as this water filter can also make for great fun on family outings and camping trips. Again, ensure that the water is PURIFIED before drinking it, and experiment with filters such as this one to improve the look and taste.
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