Stored water and source safety

Store a usable supply, then plan for the source that fails

Start with water the household can reach and dispense during an outage. Then match testing and treatment to the source, advisory, or contaminant instead of assuming one filter or one disinfection method handles every problem.

Is this the right starting point for you?
Who this is for
Households preparing for utility outages, boil-water notices, damaged wells, questionable source water, limited sanitation, or a longer interruption in safe water service.
First decision
How much immediately safe water can the household store, lift, place, and dispense before it must depend on treatment or a refill source?
  • Stored water as the first layer
  • Treatment matched to the hazard
  • Public-health instructions checked

Choose what applies

If the broad starting guide is more than you need, choose the question that fits your next decision.

28 additional planning guides

More Water & sanitation guides

Check the updated date, sources, assumptions, and safety limits inside each guide before acting.

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24 more household decisions

Plan first. Buy what is missing.

Choose a container you can actually handle

Match storage space, filled weight and dispensing to your household. These are documented examples, not a requirement to replace suitable containers you already own.

Before you begin

What does an emergency water baseline cover?

It usually focuses on drinking and basic food preparation. Sanitation, heat, illness, pregnancy, medication, pets, and physical work can increase the practical amount.

How much emergency water do you need per person per day?

CDC recommends storing at least 1 gallon per person per day for 3 days. That is a starting baseline; needs can be higher with heat, illness, pregnancy, pets, cooking, or sanitation. Read emergency household water calculation and plan.

What is the difference between water filtration and disinfection?

Treatment methods address different hazards; a filter or disinfectant does not make every source safe. Follow current public-health advice for the specific suspected contamination and the exact product instructions. Read emergency water purification methods.

Does boiling remove every contaminant?

No. Boiling can address many disease-causing organisms when public-health guidance calls for it, but it does not remove salts, many chemicals, or PFAS. Follow the current local advisory and use a safe alternate source when chemical contamination is suspected.

How do you get water from a private well during a power outage?

Well-pump and backup options depend on the exact pump, well, electrical service, and local requirements. Do not improvise a generator connection or well work; contact a qualified electrician or well professional and keep safe stored water available. Read private well safety after a flood.

Can rainwater be used as drinking water?

Roof runoff can contain microbes, metals, chemicals, and debris. Check local rules and current health guidance, and do not assume a basic screen or barrel makes it potable.

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