How long can bottled water last after it is opened?

Water plays a very important role in our life. It has many uses. It can be used for drinking, watering flowers and so on. There is also a lot of water in our human body because our body replenishes water every day. The bottled water sold in supermarkets has always been very popular with the public, but because of its large capacity, we can’t drink it all at once. So how many days can the bottled water be kept after it is opened?

Generally, there are two microbial indicators for measuring drinking water, one is the total colony count and the other is the total coliform bacteria. Generally speaking, the coliform group is qualified in most cases. The main problem is that the total colony count exceeds the standard, and the excess of the total colony count will become more serious as you use it for a longer time. Currently, so many people are using bottled water. What should be paid attention to is the usage cycle of bottled water. The shorter the cycle, the better. Some families use a bucket of water for too long, half a month or even a month, which does not meet hygiene standards.

At present, the country has clear standards for the total colony count and coliform group in bottled water. Due to the structural defects of the water dispenser, once the water tank is opened, the water comes into contact with the air. The air inlets of most water dispensers do not have disinfection and filtration devices. Some microorganisms and dust in the air enter the water tank through the air inlet, causing pollution of the water dispenser. Therefore, we should not drink bottled water for too long. If the water is not finished within 20 days, do not drink the remaining water. Use it for other purposes instead and do not waste it.

Bottled water usually has a shelf life of three months, but this is when it is unopened. If opened, it can be consumed for up to 15 days.

1. For most families with only about 3 people, it is undoubtedly a difficult task to finish a bucket of bottled water with a shelf life of only one week within 7 days. In addition, the pace of life is constantly accelerating and people spend less and less time at home. Therefore, a bucket of water is undoubtedly too much for everyone. It is recommended to drink less bottled water in summer.

2. Generally speaking, the shelf life of bottled water on the market is about 3 months, and some companies' products have a shelf life of 1 month. Therefore, bottled water can easily expire.