How to Purify Water

Thoreau said, “Water is the only drink for a wise man.” Here’s how to purify yours when you’re out in the wild.

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You Will Need

  • A camp stove or campfire
  • A water purifier
  • Water purification tablets
  • A container to collect water

Steps

  1. Step 1

    Pick your water carefully

    Even if you’re intending to purify it, pick water carefully—ideally, from a running stream. Avoid standing water, and/or water that is dark, smelly, or filled with debris.

  2. Step 2

    Boil it

    Boil water for about five minutes on a camp stove or over a campfire, removing anything that floats to the top as it bubbles.

  3. Step 3

    Use a purifier

    If you do a lot of camping, invest in a water purifier that uses a chemical-free system. Look for one with an absolute pore size of 0.2 micron.

  4. Step 4

    Use chlorine dioxide tablets

    If you don’t want to lug a camp stove or invest in a pricey purifier, take chlorine dioxide tablets along on your camping trip. Just drop them into water, wait a few hours, and the water is safe to drink.

  5. Avoid iodine purification tablets, which while still sold, have lost favor with campers because of their danger to people with thyroid conditions.

  6. Step 5

    Collect condensation

    If you are lost & have no means of starting a fire to boil water, collect condensation. Dig a hole in the ground, put a container inside (fashion one from bark if you must), and cover it with plastic or cloth secured with rocks & with a stone in the center, so it hangs lower than the sides.

  7. Seventy-nine percent of campers bring bottled water with them, according to a survey.

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