Emergency & what to do Calculator

Water for emergencies

How much drinking water your household should store.

Emergency planners recommend storing at least 3 liters (about 3 quarts) of water per person, per day — for drinking, cooking and basic hygiene. Enter your household size to see how much to keep on hand.

Your household

People Days of water to store

Emergency planners recommend about 3 liters (≈ 0.8 US gallons) per person per day — for drinking, cooking and basic hygiene. A 72-hour supply is the minimum most agencies advise.

You need to store:

≈ US gallons

Storage tips:

Store water in food-grade containers, away from sunlight and chemicals.
Write the date on each container and replace stored water every 6 months.
Add extra for children, nursing mothers, pets and hot climates.
Keep a way to purify water too: boiling, or purification tablets as a backup.

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Planning aid only. This tool gives general estimates and standard procedures — not legal, financial or medical advice. In a life-threatening situation, call your local emergency number first. Always verify country-specific rules with official sources.