Health Experts Warn Against Reusing Single-Use Plastic Bottles

According to a report by Khaosod Online Thailand, health experts are cautioning the public against the common practice of refilling single-use plastic water bottles. Pharmacist Chen Shih-yu highlighted that these bottles are designed for one-time use and pose hygiene risks when reused.

When individuals drink directly from a bottle, saliva, food particles, and oral bacteria can become trapped in the bottle's threading. Because the narrow openings are difficult to clean thoroughly, these bacteria can multiply rapidly, especially in warm and humid conditions. Some findings suggest that the bacterial count on the rim of a reused plastic bottle can exceed that of a household toilet seat.

Furthermore, most of these bottles are made from PET (Polyethylene Terephthalate), which is not intended for repeated washing or high-temperature exposure. Such actions can cause microscopic scratches on the surface, creating environments where bacteria thrive. Over time, the degradation of the plastic may also lead to the release of microplastics and chemical substances into the water.

For residents and travelers in Thailand, this serves as a reminder to prioritize hygiene when managing hydration. While the convenience of refilling bottles is common, experts advise against it to avoid potential health risks. It remains to be confirmed how specific cleaning methods or different types of reusable containers might mitigate these risks compared to standard single-use PET bottles.