One of the most important things you can do to ensure your survival in an emergency situation is to purify water. There are many ways to purify water, but which one you use will depend on the quality of the water and how much time you have.
If you have access to clean water, then boiling it for at least 7 minutes is the best way to kill any harmful bacteria or viruses that may be present. If the water is not clean, then you will need to filter it first before boiling it.
There are many different types of filters available on the market, but if you're looking for something that is effective and easy to use, then we recommend the LifeStraw personal water filter. This simple device can be used to filter out 99.9999% of all bacteria and parasites from contaminated water sources.
Once you have filtered your water, simply boil it for 7 minutes (or longer if at high altitude) and allow it to cool before drinking. You can also add a small amount of bleach to further disinfect the water, but make sure to follow the instructions on the bottle carefully so as not to make the water too poisonous!