Method / Pathogenic Bacteria Virus Protozoa Boil at 100 C for more than 5 minutes Yes Yes Yes Iod

Even though the creek beside his tent in the camp seems to crystalline, many parasites may be lurking big berkey instestinais to cause infections. You have no way of knowing if there is a bathroom or animal feces in a location higher up the creek where you are. The water may be contaminated, for cleaner and clear it feels.
The most usual way of purifying water is through the use of Sodium Hypochlorite 2.5%. It takes two drops per liter of water and wait about 30 minutes before drinking. I prefer this method. Normally filter dirty and muddy with a cloth strainer and purify sequence with chlorine and often with SODIS water (see logo abaix0) also
Another way is to purify water by using a 2% iodine, use 5 drops per liter of water and also wait 30 minutes before drinking. The problem of iodine is that it leaves a very bad taste in the water and people with thyroid problems (and pregnant women) can not use this form of treatment to purify big berkey water. To make matters worse, some protozoa do not die with iodine (as Cryptospodirum). If necessary, the use of carbon filters remove big berkey virtually all of the iodine.
Method / Pathogenic Bacteria Virus Protozoa Boil at 100 C for more than 5 minutes Yes Yes Yes Iodine Most except Cryptosporidium Yes Yes Sodium Hypochlorite between 2.5 to 5% Yes Yes Yes Filter (1 micron) Yes No No filter (0.2 micron) Yes Yes No Filter (0.5 micron) Yes Most except not Campylobactor filter (1 micron or less used with iodine or sodium hypochlorite) Yes
Just fill the bottle with about three quarts of water, cover tightly and stir for about 20 seconds. Without this then just leave exposed to ultraviolet radiation emitted by the sun water. In general suffice 6 hours of exposure (or less, depending on its altitude) so that the water is safe for consumption. Of course if you are in a very cold place this method will not work because the water will freeze ...
Finally, there are excellent big berkey mechanical and hybrid filters made by Katadyn and the Mountain Safety Research (MSR) (www.katadyn.com and http://cascadedesigns.com/MSR), in the photo below I am filtering the water in Base Camp Condoriri in Bolivia:
Now comes another "problem", which is just bring the water to where it will be eventually prepared food, etc. .. etc. ... Often the water is withdrawn from a stream, a lake, the edge of a glacier course ... , you can always grab a pan and fetch water, but hesitate a portable bucket and made of fabric with exactly this goal, and best of all: absurdly big berkey light and compact!
Hah ... I almost forgot one of the most important items of this article: do not use soap or detergent (biodegradable or not) to clean the pans, silverware, dishes, etc. .. when in a natural environment! Just a cloth or some sand to clean a pot or dish ... If necessary use some chemical to clean the kitchen items, PLEASE make at least 25m away from any stream, river, creek, came water, etc. ... nature, animals and the fragile mountain environment thanks!
It was no accident!
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