Is it safe to drink bottled water left in your car? Here’s why you should think twice
Experts warn that exposure to high temperatures can cause harmful chemical leaching and bacterial growth, making it a potential health risk.
While it may seem harmless, drinking bottled water that has been exposed to heat for long periods is not recommended. Here’s why:
- Plastic leaching chemicals into water
A study published in Science of The Total Environment found that heat exposure causes plastic bottles to release harmful chemicals, such as bisphenol A (BPA) and phthalates, into the water.
Another study in Environmental Science and Technology revealed that when plastic interacts with heat, it can release trillions of nanoparticles per litre, which, when consumed over time, may disrupt hormones and pose long-term health risks.
- Bacterial growth from saliva contamination
If you’ve already taken a sip from the bottle, your saliva introduces bacteria, which can multiply rapidly in warm conditions.
Drinking from an old, warm bottle can lead to digestive issues, stomach discomfort, and potential infections.
How to stay hydrated the right way
Instead of risking chemical contamination and bacterial exposure, follow these safe hydration tips;
Use insulated or stainless steel bottles: Keep your water cool and free from plastic leaching.
Set hydration reminders: Use phone alerts or hydration-tracking apps to ensure you drink enough water.
Infuse your water: Add natural flavours like lemon, mint, or cucumber to make drinking water enjoyable.
Drink regularly: Don’t wait until you’re thirsty—sip water throughout the day to avoid dehydration.
Keep a bottle within reach: Whether at home, work, or commuting, having water nearby helps maintain hydration.
Eat water-rich foods: Consume fruits and vegetables like watermelon, cucumbers, and oranges to boost hydration.
Staying hydrated is essential, but drinking bottled water that has been sitting in a hot car is not a safe option. Instead, choose safer storage methods and hydration habits to protect your health while keeping yourself refreshed throughout the day.