Does Water Go Bad in Plastic Bottles?
No, the water itself doesn't go bad. However, the plastic bottle containing the water does degrade over time. This degradation can lead to the leaching of chemicals into the water, making it potentially unsafe to drink.
The problem isn't with the water itself; water is a stable substance. The issue lies with the plastic container. Over time, plastic bottles can break down, releasing chemicals into the water. This is why using BPA-free bottles is recommended. While the water itself remains potable for a considerable time, the container's integrity compromises its safety.
- Plastic Degradation: The plastic used in many single-use water bottles (often PET) degrades with age and exposure to heat and light, affecting its ability to contain the water safely.
- Chemical Leaching: As the plastic degrades, chemicals can leach into the water. The nature and quantity of these chemicals vary based on the type of plastic and storage conditions.
- Taste and Odor Changes: Even without harmful chemical leaching, prolonged storage can lead to changes in the taste and odor of the water due to interaction with the plastic.
Shelf Life and Storage
While water doesn't spoil, a recommended shelf life of two years is often suggested for bottled water. This is primarily due to the potential for plastic degradation and chemical leaching. Proper storage is crucial to prolong the safety of bottled water.
- Storage Conditions: Keep bottled water in a cool, dark place to minimize plastic degradation and chemical leaching.
- Expiration Dates: While not mandatory in all regions, expiration dates on bottled water serve as a guide regarding the plastic bottle's integrity, not necessarily the water's potability.
Conclusion
The key takeaway is that the water in plastic bottles doesn't go bad in the same way perishable goods do, but the plastic bottle itself can degrade and contaminate the water. Therefore, consider the age and storage conditions of the bottled water before consumption.
