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What Is Distilled Water and Is It Safe to Drink?

How to make your own distilled water

  1. Put water to reach halfway in a large pot
  2. Tie a cup to the pot’s lid so the cup will hang rightside up inside the pot when the lid is shut. The cup should be high enough inside the pot that it does not touch the water.
  3. Boil the water for 20 minutes. Boiling creates vapor that rises and then condenses back into water.
  4. The water that drops from the lid into the cup is distilled.

Unopened bottles of store-bought distilled water last virtually indefinitely. But keep it out of the sun’s direct rays. Once it’s been used, make sure to seal it up tightly. Even in purified water with few nutrients, certain microorganisms can grow.