Water Sanitization in Emergencies


  • Heat and strain water through clean cloth
  • Boil water vigorously for 2-3 minutes
  • Allow water to cool.
    • Adding a pinch of salt per quart removes flat taste
    • Or, pour between clean containers several times




Any household bleach solution (plain, not scented) that contains hypochlorite may be used for disinfection.

  • Drops per gallon of clean water*
    • 8 drops
      •  *Double the amount for turbid (cloudy) water
  • Mix thoroughly and let stand for 30 minutes.
    • Should have a faint chlorine odor
      • If not, repeat dosage and let stand for 15 minutes
    • Too strong of chlorine taste
      • pour between clean containers a several times
      • Let stand exposed to air for a few hours

How to video:



  • Common household iodine from the medicine chest or first aid kit package may be used to disinfect water
  • Add 5 drops 2% United States Pharmacopeia (USP) tincture iodine
  • per quart of clear water
    • Turbid (cloudy/unclear) water add 10 drops
  • Mix thoroughly and let solution stand for at least 30 min.


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