The shelf life of bottled water is generally only 15 days. If it is unopened bottled water, it can be stored in a cool and dark place for up to 3 months. Bottled water is generally sealed pure water, so the shelf life is related to the air in contact. Even the water on the water dispenser should be drunk within 15 days. The water dispenser has the function of water storage, and it is easier to accumulate bacteria after long-term use. You should drink it as soon as possible.
 1、 How long is the shelf life of barreled water
 Bottled water is bottled pure water. The national standard indicates that the shelf life of bottled water is 3 months. This is the case with unopened water. If opened, it can be drunk for up to 15 days. It is recommended to drink within 10 days after opening. Especially the barreled water used in the water dispenser should be drunk as soon as possible, otherwise it is easy to breed bacteria. Excessive drinking is harmful to health.
 Bottled water is purified during production and transportation. Generally, the water quality certified by QS is qualified. If it is opened, pay attention to it. Bacteria in the air will enter the water and multiply rapidly. If placed for a long time, it is easy to cause diarrhea.
 If bottled water is placed on the water dispenser, it is recommended to drink it quickly. Because there is a water tank in the water dispenser, it is a breeding ground for bacteria after a long time, which is very unsanitary. So you'd better drink it as soon as possible after opening it. At the same time, it is better to clean the water tank in the water dispenser every three months. There are special cleaning materials for sale, and they can be very clean by themselves.