Boiling has been a method of disinfection as it is used for food, washing, and many more. Thus, boiling water has been a way to disinfect polluted water for people to drink. But is it really safe?
In order to clean the highly contaminated water, much of the chlorine must be applied to the water we drink, which causes trihaloalcane carcinogens. If the residual chlorine (bleaching powder) in the tap water is heated, it reacts chemically with the organic matter in the water and creates another strong carcinogen, trihalomethane. It is also one of the most terrifying accomplices of various adult diseases, chronic diseases, and many diseases.
Many people falsely assume that "the bacteria will be removed during the heating process" but they do not realize that since drinking water produces a large amount of chlorine and organic compounds, a chemical reaction will occur when it is heated to produce fresh trihalides.
Japan's Osaka Municipal Waterworks Bureau, known as the advanced country, performed a boiling test at a tap water purification plant and noted that when the temperature is not 100 degrees, the total value of trihalomethane and the concentration of trichloromonocarbons are both the highest. If the boiling continues for 40 minutes, the concentration will drop to zero.