Boiling water several times: is it harmful or not – a pressing question for tea and coffee lovers
Everyone has heard about the negative impact of re-boiling on the quality of water, but few people know what exactly it is.
We explain why you need to give up the habit of boiling the same water several times.
Why is it harmful to boil water several times?
Firstly, repeated boiling increases the concentration of harmful substances contained in water, in particular fluorine and nitrites.
Secondly, in some models of kettles (with plastic parts) the formaldehyde content increases during boiling.
This is the conclusion reached by experts from Roskachestvo. As part of the experiment, they boiled water, cooled it, and heated it again.
In 9 cases out of 30, formaldehyde appeared in the water after the first boiling. In the contents of 3 kettle models, the concentration of formaldehyde increased after repeated boiling.
Earlier we talked about why it is useful to put newspaper in the refrigerator.
