Yes, 20-year-old bottled water is generally safe to drink, provided it has been stored properly in a cool, dark place. However, the quality and taste can degrade over time due to potential leaching from the plastic and oxidation.
Is 20-Year-Old Bottled Water Still Safe to Drink?
You’ve stumbled upon a case of bottled water that’s been sitting in your pantry for two decades. The immediate question that pops into mind is, "Can I still drink this?" The good news is that properly stored bottled water doesn’t typically "spoil" in the way perishable foods do. However, several factors can affect its safety and palatability.
Understanding Bottled Water Shelf Life
Bottled water, especially if it’s just plain water without added minerals or flavors, is essentially inert. This means it doesn’t provide a nutrient source for bacteria to grow significantly. The primary concerns with long-term bottled water storage revolve around the container and the storage environment.
The Role of the Plastic Bottle
Most bottled water comes in PET (polyethylene terephthalate) plastic bottles. Over time, especially when exposed to heat or sunlight, these plastics can begin to degrade. This degradation can lead to chemicals from the plastic leaching into the water.
While the amounts are usually very small and unlikely to cause immediate harm, they can affect the water’s taste and odor. Some studies suggest that BPA (Bisphenol A), a chemical previously used in some plastics, can leach into water, though most modern water bottles are BPA-free.
Storage Conditions Matter
The ideal storage conditions for bottled water are crucial for maintaining its quality. This means keeping it in a cool, dark place, away from direct sunlight and extreme temperatures. Exposure to heat can accelerate the breakdown of the plastic and potentially encourage the growth of any dormant microorganisms.
- Cool temperatures: Help prevent plastic degradation.
- Darkness: Protects against UV light, which can also affect plastic.
- Avoid extreme heat: Prevents warping and chemical leaching.
Potential Changes in 20-Year-Old Bottled Water
Even if deemed safe from a microbial standpoint, your 20-year-old bottled water might not be as pleasant to drink as it once was.
Taste and Odor Alterations
The most common issue with aged bottled water is a change in taste and smell. This is often due to:
- Plastic leaching: As mentioned, chemicals from the bottle can impart a plastic-like flavor.
- Oxidation: Over time, the water can absorb gases from the surrounding air, leading to a "flat" or stale taste.
- Odor absorption: Plastic is porous and can absorb odors from its environment if not stored properly.
Microbial Concerns (Rare but Possible)
While rare, if the seal on the bottle was compromised at any point, or if the water wasn’t purified correctly initially, bacteria could have entered and multiplied over the years. This is more likely if the water has been stored in suboptimal conditions.
When to Consider Discarding Old Bottled Water
While generally safe, there are times when it’s best to err on the side of caution and discard that old bottle.
- Damaged or compromised bottle: If the bottle is cracked, bulging, or the seal looks tampered with, it’s best to toss it.
- Cloudy or discolored water: Any visible change in the water’s clarity or color is a red flag.
- Strong, unpleasant odor: If the water smells off, don’t drink it.
- Stored improperly: If the water has been exposed to significant heat or sunlight for extended periods, the risk of chemical leaching increases.
Practical Tips for Storing Bottled Water
To avoid these issues with any bottled water you plan to keep long-term, follow these tips:
- Buy from reputable sources: Ensure the water and bottles are of good quality.
- Store in a cool, dark pantry: Avoid garages, sheds, or direct sunlight.
- Keep away from chemicals: Don’t store water near cleaning supplies or pesticides.
- Check the expiration date (if any): While water itself doesn’t expire, manufacturers may put dates for quality assurance.
Frequently Asked Questions About Old Bottled Water
### Can I get sick from drinking old bottled water?
It’s highly unlikely to get seriously ill from drinking 20-year-old bottled water if it was sealed and stored correctly. The primary risks are changes in taste and odor due to plastic degradation or minor chemical leaching. However, if the seal was broken or storage was poor, there’s a small risk of bacterial contamination.
### Does bottled water expire?
Bottled water itself doesn’t technically expire. However, the plastic bottle can degrade over time, potentially affecting the water’s taste and quality. Manufacturers often list an expiration date, typically for quality assurance rather than safety, indicating when the taste might start to decline.
### What happens if you drink water from an old plastic bottle?
If you drink water from an old plastic bottle that has been stored properly, you’ll likely notice a slight change in taste or a faint plastic odor. In most cases, it’s safe to consume, but the sensory experience might be diminished. If the bottle was damaged or stored poorly, there’s a higher chance of undesirable contaminants.
### How should I store bottled water for emergencies?
For emergency preparedness, store bottled water in its original container in a cool, dark, and dry place. Avoid areas with extreme temperature fluctuations, such as attics or uninsulated garages. Rotate your stock every few years to ensure you always have fresh water available.
Conclusion and Next Steps
In summary, while 20-year-old bottled water is generally safe to drink, its quality and taste may have deteriorated. Always inspect the bottle and the water for any signs of damage, cloudiness, or off-odors. If in doubt, it’s always best to discard it and opt for fresh water.
If you’re concerned about water quality or long-term storage, consider investing in water purification systems or using durable, reusable water bottles made from glass or stainless steel for everyday use.