Yes, it is generally safe to drink 20-year-old bottled water, provided it has been stored properly in a cool, dark place. While the water itself doesn’t expire, the plastic bottle can degrade over time, potentially leaching chemicals into the water.
Is 20-Year-Old Bottled Water Still Safe to Drink?
You’ve stumbled upon a forgotten case of bottled water, perhaps from a past emergency preparedness stash or just lost in the back of the pantry. The question naturally arises: is this two-decade-old water still potable? The good news is that water doesn’t technically expire. However, the container it’s stored in plays a crucial role in its safety and quality over extended periods.
Understanding Water’s Shelf Life
Pure water, H2O, is remarkably stable. It doesn’t spoil or become contaminated on its own. The primary concern with aged bottled water isn’t the water itself, but rather the plastic bottle it resides in. Over time, especially when exposed to heat or sunlight, the plastic can begin to break down.
This degradation can lead to a few potential issues:
- Chemical Leaching: The plastic may release chemicals, such as BPA (Bisphenol A) or phthalates, into the water. While the long-term health effects of low-level exposure are debated, it’s generally advisable to minimize such exposure.
- Taste and Odor: The plastic can impart an unpleasant taste or smell to the water. This is often the first sign that the bottle has compromised the water’s quality.
- Microbial Growth (Rare): If the seal on the bottle was ever compromised, or if the water wasn’t purified to begin with, bacteria could potentially grow over time. However, commercially bottled water is typically treated to prevent this.
Factors Affecting Bottled Water Safety Over Time
Several factors influence whether your 20-year-old bottled water is safe and palatable. Understanding these can help you make an informed decision.
Storage Conditions Matter Most
The way bottled water is stored is paramount. Ideal conditions involve a cool, dark, and dry environment. Think of a basement or a climate-controlled pantry.
- Heat: High temperatures accelerate the breakdown of plastic. Storing water in a hot garage or car can be detrimental.
- Sunlight: UV rays from sunlight can also degrade plastic and potentially encourage microbial growth.
- Chemical Proximity: Storing water near chemicals or strong-smelling substances can cause the plastic to absorb those odors and flavors.
Bottle Material and Integrity
Most bottled water comes in PET (polyethylene terephthalate) plastic. While generally safe for short-term use, its long-term stability can be a concern.
- Cracks or Damage: Visually inspect the bottle for any signs of damage, cracks, or a compromised seal. If the bottle looks damaged, it’s best to err on the side of caution.
- BPA-Free vs. BPA-Containing: While many bottles today are BPA-free, older bottles might contain it. If you have concerns, look for bottles explicitly labeled as BPA-free.
How to Tell if Your Old Bottled Water is Still Good
Before you take a sip, perform a quick sensory check. This is your best defense against unpleasant or potentially unsafe water.
- Visual Inspection: Look for any cloudiness, discoloration, or foreign particles in the water. Check the bottle for any signs of damage or leakage.
- Smell Test: Open the bottle and take a sniff. Does it smell musty, chemically, or off in any way? If so, discard it.
- Taste Test (Cautiously): If the visual and smell tests pass, take a small sip. If the taste is stale, plastic-like, or just not right, don’t drink any more.
What to Do with Old Bottled Water
If your 20-year-old bottled water has passed the sensory tests and you’re still comfortable drinking it, it’s likely fine. However, if there’s any doubt, or if it has an off-taste or smell, it’s best to use it for other purposes or dispose of it.
- Non-Drinking Uses: Old bottled water is perfectly suitable for watering plants, rinsing dishes, or even for use in a toilet tank to save water.
- Proper Disposal: Empty the water down the drain and recycle the plastic bottle if your local facilities accept it.
Comparing Bottled Water Storage Options
When considering long-term water storage, different containers offer varying degrees of safety and longevity.
| Storage Method | Pros | Cons | Best For |
|---|---|---|---|
| Original Plastic Bottle | Readily available, convenient for short-term. | Plastic can degrade over time, potential chemical leaching, taste issues. | Short-term emergency preparedness. |
| Food-Grade Plastic Jugs | More durable than single-use bottles, designed for storage. | Still plastic, requires proper storage, can be bulky. | Medium-term emergency water supply. |
| Stainless Steel Containers | Durable, inert, no chemical leaching, long-lasting. | Can be expensive, heavier, requires proper cleaning. | Long-term water storage, outdoor use. |
| Glass Bottles | Inert, no leaching, pure taste. | Fragile, heavy, can be expensive. | Short to medium-term storage, taste purity. |
Frequently Asked Questions About Old Bottled Water
Here are answers to some common queries people have about drinking aged bottled water.
### Can I get sick from drinking old bottled water?
While the water itself doesn’t spoil, if the plastic bottle has degraded significantly or if the seal was compromised, there’s a small risk of ingesting chemicals or bacteria. However, for water stored properly in intact bottles, the risk is generally very low.
### Does bottled water expire if it’s sealed?
Sealed bottled water doesn’t expire in the sense of becoming unsafe due to spoilage. The expiration date you sometimes see on bottles refers to the quality of the plastic bottle, not the water itself. After a certain period, the bottle might start to affect the water’s taste or integrity.
### What happens if I drink water from a really old plastic bottle?
If the bottle is old but has been stored correctly, you might notice a slight plastic taste or smell. In most cases, it’s unlikely to cause immediate harm. However, if the bottle has degraded substantially or was exposed to heat and light, there’s a higher chance of chemical leaching.
### Is it better to store water in plastic or glass for emergencies?
For long-term emergency storage, food-grade plastic jugs or **stainless steel containers