The shelf life of bottled water after opening is 15 days.
Once bottled water is opened, it will be easily contaminated by bacteria, and these bacteria mainly come from hands, cups, drinking fountains, etc., and the longer it is opened, the more contamination it will receive. The more serious it is. Generally, it is best if you can drink it all the same day after opening. If you cannot drink it all, it is best to store it in a sealed container.
Notes on the use of bottled water:
Bottled water cannot be stored for a long time without being opened. Because the longer the bottled water is stored, the bacteria that breed inside it will The more you drink, the more likely it is to be harmful to your health if you drink it for a long time.
You cannot drink bottled water after it has expired. The minerals and trace elements contained in expired bottled water will form into small particles. Even if it is heated to high temperature again, these particles will still exist. Continue Drinking has certain health risks, not to mention bottled water that has expired after opening, and you cannot drink it.