Things You'll Need
Instructions
Collect water from nearby sources using a canteen or jug.
Start a fire or turn on your portable stove.
Pour the water into the pot and place it over the fire or on the stove.
Leave the water over the heat source until it begins to boil. Water boils at a temperature of 100 degrees Celsius or 212 degrees Fahrenheit, but the Wilderness Medical Society states that any temperature above 85 degrees Celsius or 185 degrees Fahrenheit is enough to kill microorganism in just a few minutes.
Allow the water to cool down and pour it into a clean water canteen. Use one canteen for clean water and one for collected water.