Bottled Water: Sealed Bottles, Opening and Storage
For commercially bottled water, retain the intact original bottle and observe the date and storage directions on its label. CDC specifically advises observing the expiration date on store-bought emergency water. No universal after-opening day count is established here, and FoodKeeper’s indefinite-storage description is not a guarantee about every bottle or storage condition.
Quick answer
CDC identifies unopened commercially bottled water as the safest and most reliable emergency water source, and advises observing its expiration date. Follow the actual bottle’s storage directions.
The label date is not a new allowance beginning when you buy the case.
Keep the bottle protected from contamination, close it when not in use and follow the label. This guide does not establish a universal refrigerated or room-temperature period after opening.
Opening changes the handling situation; the sealed-bottle description does not provide an opened countdown.
CDC gives separate instructions for home-filled emergency water: follow CDC’s container-cleaning and sanitizing instructions and use suitable food-grade containers, label the storage date and replace the water every six months. It describes cool storage at 50–70°F (10–21°C), out of sun and away from toxic substances.
The six-month replacement schedule concerns water stored at home, not an automatic expiry assigned to every commercial bottle.
Do not rely on a normal appearance, smell or taste to establish water safety. Follow a recall or official local water advisory, and do not use a compromised bottle as a safe supply.
A printed date cannot override known contamination or a broken package.
Discard immediately if
- Discard moldy food or food with suspicious odor or appearance; do not taste-test it.
- Follow the exact label and do not use a leaking or compromised package.
Why guidance varies
This covers plain commercially bottled drinking water. It does not assign the same handling to flavored water, milk-based drinks, home-filled emergency containers, reusable bottles, or water exposed to a contamination advisory.
The bottle is part of the storage question
A sealed retail bottle is a packaged food product with a specific container and closure. Once opened, that original sealed condition no longer describes it. A bottle filled from a household tap is another preparation again. Keeping those situations separate prevents a general sentence about water from becoming a misleading promise about every bottle on a desk or in a car.
Plan an emergency reserve with the label visible
Leave commercial bottles in their original packaging so the date and product details remain available. Use older stock first according to its label, then replace it as part of normal household rotation. Select a place where sunlight, heat or nearby chemicals are not likely to compromise the supply. CDC’s exact temperature range in this guide is from its home-filled-water section; it is not represented as a manufacturer specification for every commercial bottle.
Protect opened water from contamination
Use the bottle as its maker intends and avoid touching the inside of the closure or container. CDC advises clean utensils when taking water from stored containers and warns against putting hands into the water. Reclosing a bottle does not recreate factory sealing. If water is mixed with another ingredient, use the instructions for that prepared drink rather than assuming plain-water guidance still applies.
A date does not diagnose a bottle
A damaged closure, a recall or suspected contamination matters even when the printed date has not arrived. Likewise, this page does not diagnose a bottle’s safety from a harmless-looking appearance. Use official water-safety instructions when the supply itself is in doubt. The guide provides storage distinctions, not a method for proving an unknown sample safe to drink.
Match the product state, storage conditions and source clock above. This guide does not provide an automatic expiry timer.
Frequently asked questions
Does FoodKeeper say bottled water lasts indefinitely?
Its entry uses that word and notes that storage conditions and containers can affect taste. This guide does not turn it into an unconditional safety promise; follow the bottle and CDC emergency-planning advice.
Should all bottled water be replaced every six months?
CDC’s six-month replacement direction is for water you fill into storage containers yourself. Its commercial-bottle direction is to observe the product’s expiration date.
Can I use a former chemical container for drinking water?
No. CDC warns against containers previously used for toxic chemicals, such as bleach or pesticides, even for emergency water storage.
Is clear-looking water necessarily safe?
No. Appearance does not establish that water is free of harmful germs or chemicals.
Sources for this answer
- A FoodSafety.gov / USDA FSIS: FoodKeeper data — Selected food-specific states; raw fields and exclusions retained in research evidence.
- A FoodSafety.gov: FoodKeeper App — Storage estimates concern freshness and quality.
- A FDA: Are You Storing Food Safely? — General cold-storage, label, package-damage and sensory-test boundaries.
- A CDC: How to Create an Emergency Water Supply — Unopened commercial water emergency role; observe commercial expiration date; separate six-month home-filled-water replacement and 50–70°F storage guidance.
- A CDC: About Bottled Water Safety — US bottled-water safety standards, sources and label information; no universal opened shelf life.