We have always heard that boiled water is the safest to drink. But in this post, we will study why twice boiled water is bad for you. There are many potential reasons for this claim. The most obvious and probable reason is that when the water is boiled, it removes all the volatile compounds which are like toxins to your body. When you boil water for quite a long time, or you boil it twice, its chemistry changes for the worst, i.e., the harmful compounds now get more concentrated, and there is a high chance that your health will be adversely affected by those harmful compounds.
Apart from this, we shall see other reasons which will prove this claim more concretely and effectively.
Reasons
Another potent reason for this claim is that the first time boiled water removes some bad compounds but only those which are volatile. In contrast, the non-volatile toxins or compounds remain in the water, and after the second boil, they get even more concentrated when the volume of liquid is greater.
Many people claim that twice boiled water is terrible for use. Still, to a flipping side of this, we would like to state that sometimes not the water, but the material of the container in which you prepare you the tea or boil the water is responsible for some adverse health consequences, such as containers made up of nickel and iron. Because of this, many containers for tea are nowadays made up of non-reactive substances, so whether you boil the water once or several times, they will not be any impurities mixed to it.
Another fact raised by people was that the taste of tea changes when the water used is boiled twice instead of once. After the study, it was found that at 100 degrees, the solubility of oxygen decreases in the water, whereas when you boil it once the solubility of oxygen remains, which does not let you feel any change in the taste of tea.
Not only people from one geographical area made the claim of twice boiled water harmful, but from all over the world, people claim that there is a risk of getting cancer due to twice boiled water. However, the conclusion after the studies was made as such, the twice boiled water is not bad for your health, but the water source you are choosing can cause harm to you no matter you boiled water for once or for several times.
Secondly, you should wisely choose the quality of the material of your container; it is not a reliable reason as such but can be considered a partial reason for such a claim.