How Long Can Unopened Bottles of Purified Drinking Water Be Stored Safely?

Understanding Expired Water Bottles

Many consumers wonder about the shelf life and safety of unopened purified drinking water bottles. While some bottles do display an expiration date, the safety and quality of the water may extend well beyond that date. This article will break down the rationale behind storage dates, potential risks, and the key factors to consider when storing bottled water.

The Common Misconception

I don't have a clear answer to how long unopened bottles of purified drinking water can be safely stored, but what I do know is that most bottles of purified water I've tried to store have "shrunk" over the years. There's no clear indication of whether this shrinkage means the water is losing its effectiveness or simply changing in composition due to a physical or chemical process. The one thing I can say with certainty is that until the bottle starts to crumple (indicating severe degradation), the water is likely safe to drink. However, the "best by" date should be treated with caution as it's more of a "safe until" date rather than an indication of actual shelf life.

Trusted Sources and Warnings

While there are numerous sites dedicated to providing extensive information on this topic, it's important to note that the safety and quality of bottled water can vary. For example, canned and bottled goods often have expiration dates indicating their peak quality, even though the product may remain safe beyond that date. The taste and quality might decline, but the product is still generally safe to consume.

Storage Recommendations

As for unopened bottled water, the general consensus is that it can remain safe for an extended period, potentially even for years past the advertised expiration date. If you store water bottles properly in a cool, dark place, they have a much better chance of maintaining their quality.

Once Opened

Once a bottle is opened, the situation changes. If stored refrigerated, it is advisable to consume the water within a week. This is due to the potential for bacterial growth and taste degradation. Even in the refrigerator, the water's microbial safety is not indefinitely maintained.

Conclusion

Storing unopened bottles of purified drinking water can be a safe and convenient practice. However, always exercise caution and monitor the condition of the bottles. While the water might remain safe long after the "best by" date, it's best to err on the side of caution and consume it within a reasonable timeframe.

For more detailed information and safety guidelines, refer to reputable sources and official guidelines from organizations like the Food and Drug Administration (FDA) or the World Health Organization (WHO).

Remember, while bottled water is generally safe, proper storage and handling are crucial to maintaining its quality.