6 minute read · Updated August 27, 2026
Make an emergency water plan you can maintain
Store, label, rotate, and safely use household emergency water without relying on one treatment gadget.
Set a baseline, then adjust
CDC recommends storing at least one gallon per person per day for three days and trying for a two-week supply when possible. More may be needed for illness, pregnancy, pets, hot climates, cooking, or hygiene.
Water is heavy—about 8.3 pounds per U.S. gallon—so distribute containers where shelving and floors can safely support them.
- People, pets, and duration
- Extra needs for heat or health
- A realistic filled-container weight
- A backup source that is not chemically contaminated
Choose and rotate safe containers
Unopened commercial bottled water is a reliable option. For home-filled water, use food-grade containers with tight closures; never reuse containers that held toxic chemicals.
Label the container as drinking water with the fill date. CDC advises replacing home-filled water every six months and storing it in a cool place away from sunlight and toxic substances.
Treatment has limits
Follow your health department during an advisory. CDC says boiling is the best way to kill germs when safe bottled water is unavailable, but boiling or disinfecting cannot make water contaminated by fuel, toxic chemicals, or radioactive materials safe.
A filter’s claim may cover only particular organisms or particles. Verify the manufacturer’s tested contaminant claims and keep a separate clean container for treated water.
Primary sources
Turn the guide into your plan.
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