- How long does bottled water last once opened? The precise answer depends to a large extent on storage conditions — keep opened bottled water refrigerated and tightly closed.
How long does bottled water last in the refrigerator once opened? Bottled water that has been continuously refrigerated will keep at best quality for about 4 to 6 days after opening.
Is opened bottled water safe to drink after the "expiration" date on the bottle? Yes, provided it is properly stored and the bottle is undamaged - commercially packaged bottled water will typically carry a " Best By," "Best if Used By," "Best Before", or "Best When Used By" date but this is not a safety date, it is the manufacturer's estimate of how long the bottled water will remain at peak quality.
How can you tell if opened bottled water is bad or spoiled? If the bottled water develops an off odor, flavor or appearance it should be discarded.
Sources: For details about data sources used for food storage information, please click here