Why should boiled water that has been cooled only be used within the day?

Families should only boil water to cool it down and use it during the day, not leave it overnight or for many days afterwards - Photo: HOANG AN

For a long time, many families in our country, especially those in rural areas, have had the habit of drinking boiled water that has been left to cool.

The habit of "eating cooked food and drinking boiled water" is very good, but many families make the mistake of boiling water, letting it cool, and then storing it in a large container to use gradually over many days, even weeks, because they think that doing so is more convenient than having to boil water every day, which is very time-consuming...

It is known that the nature of boiling water is to use heat to destroy microorganisms and parasites (if any) in the water. The boiling process does not cause harmful substances to the body, nor does it create carcinogens.

However, according to the advice of nutrition experts, every family needs to give up the habit of storing and using boiled water that has been left to cool for too long, because the longer it is left, the dirtier the water becomes.

In principle, the boiling process will destroy microorganisms, decompose them into organic matter in the water - a food source for microorganisms from outside to invade.

Therefore, the risk of microbial re-infection is very high, causing water to quickly spoil and the amount of microorganisms to multiply, causing harm to health.

Chemical expert Tran Hong Con also said that the longer boiled water is left to cool, the better the conditions will be for bacteria in the environment to penetrate and grow. Furthermore, the habit of pouring new boiled water into the old water remaining in the bottle will further promote the growth of bacteria.

To ensure the health of all family members, doctors and experts recommend that it is best for families to only boil water, let it cool, and use it during the day, and not leave it overnight or for many days afterward.

Avoid pouring newly boiled water into an old water tank that is still empty. If you have not used up all the boiled water that has been cooled today, you should pour it out and then boil a new kettle of water.

In addition, the best and cleanest container for storing boiled and cooled water is a glass bottle with a tight lid. During use, the container for storing boiled and cooled water needs to be cleaned and scrubbed regularly to avoid bacteria from entering and contaminating the drinking water source...

Source: https://tuoitre.vn/vi-sao-nuoc-dun-soi-de-nguoi-chi-nen-dung-trong-ngay-20240614090526958.htm