Bottled mineral water usually has a shelf life of 24 months, but in actual use, it is recommended to be different. The shelf life of unopened mineral water is generally 2 months. Brands such as Nongfu Spring recommend drinking it within 2 weeks after opening in winter, and within 1 week in summer. Since air enters bottled water, impurities may affect the water quality. It should be consumed as soon as possible after opening, and it is recommended not to exceed one day.

Although mineral water is purely inorganic and is not prone to bacteria after opening, minerals may undergo weak chemical reactions with gases in the air if exposed to the air for a long time. Therefore, it is recommended to drink it on the same day as much as possible. At the same time, drinking water also has its taboos. First of all, excessive drinking of water may lead to a decrease in osmotic pressure and cause water intoxication, because the water content in the human body has been relatively stable. Secondly, you should not drink raw water or water that has been left for too long. The chlorine and organic substances in tap water may produce harmful substances, and unboiled water may contain bacteria, which increases the risk of cancer.

In general, the shelf life of bottled mineral water mainly depends on how it is used after opening. Following the manufacturer's recommendations and paying attention to the freshness of the water are the keys to ensuring health. Reference sources: People's Daily Online, Baidu Encyclopedia.