Really purify your drinking water is boiling?
Camping, traveling abroad, or even after a failure to your local plant wastewater treatment, is required to boil water before drinking it. How effective is the cooking - does it really make the water drinkable? And how long do you boil water for?
Why boil water?
The main reason for cooking is recommended as a water treatment plant, because it can be done simply, and because the disease-causing organisms are destroyed by heat. Keep the water at a sufficiently highTemperature long enough to destroy pathogens. The organisms of interest are cysts such as Cryptosporidium and Giardia, and bacteria such as E. coli, typhoid, etc. Even if cooking does not remove them from the water to kill him and not cause disease.
How long the water should be boiled?
There are proposed many times: 1 minute, 3 minutes, 5 minutes, 10 minutes, etc. Some advocates suggest that the addition of even a minute to the cooking time for each altitude of 1000 meters.So, what is true these days? Finally determines the amount of time the water must boil the amount of fuel (about 1 liter of water needed to cook a pound of wood). Apparently, none of them. You do not even need to cook for a minute - is enough to bring up to boiling point. Consider why.
According to the Wilderness Medical Society, water temperatures above 70 ° C (160 ° F) to kill all pathogens within 30 minutes and about 85 ° C(185 ° F) in a few minutes. So, depending on the temperature is higher, the less time required to kill microorganisms. Bring water to boiling point elevates them far above the 85 ° C mark. Not only that, but the water must be cold (unless you make a cup of tea). So the total time spent in the water about 85 ° C is significant and sufficient to kill pathogens.
If it is enough just to bring water to 85 ° C for a few minutes, because it is said to cook it? Basicallybecause this is a surefire way to ensure the water at the right temperature. Most people do not wear, thermometers with them when camping, so it would be difficult to determine when the correct temperature is reached - when it comes to food, you know what temperature is within a few degrees.
How effective is the boiling water?
Boiling water is an effective method to destroy bacteria and other pathogens. If the water is cloudy, filter through a clean cloth orCoffee filters to reduce particulate matter before cooking to remove them look better.
Boiling does not protect against other things such as heavy metals, pesticides, herbicides, pharmaceuticals, etc., which can contaminate a water supply. It 'can remove chemicals that have a lower boiling point than water, but what about the others? Nor is it to remove the turbidity, bad taste and odor.
In short, do not clean the water with boiling water. And 'safeeffective to eliminate the target pathogens, but not against other contaminants effectively - you really need a decent water purifier for it. However, drinking boiled water is certainly better than dehydration.
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