Doomsday Defense Topic
Section
Water
You can last only about three days without water. Finding it, making it safe to drink, and storing enough for a crisis.
Field notes
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Disinfecting Water with Household Bleach
8 drops of plain 5–9% bleach per gallon of clear water, stir, wait 30 minutes. Double it for cloudy or very cold water. The CDC table and the rules.
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How to Boil Water to Make It Safe to Drink
Boiling is the most reliable way to kill germs in water. Bring clear water to a rolling boil for 1 minute, or 3 minutes above 6,500 feet.
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How Much Water to Store for an Emergency
At least one gallon per person per day for several days, more for children, nursing mothers, the sick and hot weather. Containers and rotation.
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Water Filters and Purification Tablets: What They Miss
Portable filters don't stop viruses, and iodine or chlorine tablets don't kill Cryptosporidium. How to combine methods so your water is actually safe.