A human cannot live for an extended period of time without water. Water is an essential resource for survival. If you can find water out there in the wild or anywhere else, good, but how good is the water? Is it free from bacteria or pathogens that could, indeed, make your situation worse?
This is why we are going to discuss some guidelines on water purification for your water survival needs.
The rainwater you collect usually is already clean and immediately safe to drink. However, all other sources such as ponds, swamps, springs…etc. and especially sources close to civilization or in tropical areas you must purify.
If at all possible, try to purify all the water you get from the ground or vegetation through boiling or using iodine or chlorine or other chemical means.
To purify a water canteen, you will need to unscrew the cap and turn it upside down so as to rinse any unpurified water from the canteen’s thread where your mouth will meet to drink.
Water Purification Water Survival: Methods
You can use water purification tablets to obviously purify water. (iodine, povidone-iodine, chlorine bleach, potassium permanganate)
Boiling also is one of the most common and safest methods to purify drinking water. You can destroy living waterborne pathogens by getting a rolling boil.
We also have a list of improvised devices for water purification/filtration over here:
Water Purification Water Survival: Dangers
If you drink nonpotable water, contraction of diseases or the swallowing of organisms would be likely. This can lead to your harm and could cause you to have waterborne illnesses. The two most prevalent pathogens in the world that are water-based are Giardia and Crpytosporidium of which both have symptoms of diarrhea – the latter being more severe than the former. The only real way to neutralize cryptosporidium is through boiling or commercial micro-filters/reverse-osmosis filtration systems – chemical means seem not to be fully effective.
Other illnesses include dysentery, cholera and typhoid, hepatitis A, flukes and leeches.
Learn some of the water survival basics.