How much emergency water to store
The 3-litre rule, and how to store bottled water sensibly.
The basic rule
UK government guidance suggests storing at least 3 litres of drinking water per person per day.
Add extra for basic washing and for pets.
Storing it
Sealed supermarket bottled water is the simplest option. Keep it cool, dark and away from chemicals.
Check best-before dates and rotate into everyday use.
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