For filtered water, tap water, mountain spring water, purified water and drinking water, if possible, we all recommend boiling before drinking. Of course, don't pay attention to words, not to say that drinking 100 degrees Celsius boiling water will burn you! What is said here is boiling, dispelling cold, drinking, hee hee. We can't drink water when we look clean. There are many microorganisms invisible to the naked eye, such as viruses, bacteria, parasitic eggs and other pathogenic pathogens. So we advocate that even bottled drinking water, not to mention tap water, should be boiled before drinking. When water boils to 100℃, most pathogenic microorganisms can be killed. Boiling water is the healthiest way to drink.
Expansion: tap water is disinfected with chlorine-containing disinfectant. Studies have shown that when water is boiled to 100 degrees Celsius for three minutes, the disinfection components harmful to human body will be minimized and it is the safest drinking water. In some areas with more minerals, we don't recommend using tap water, because filtering devices often can't filter minerals. Drinking such tap water for a long time is easy to form kidney calculi. I'm a doctor in the women and children's hospital. When you come to see a doctor at night, most of the words of children and adults are urinary calculi.
References:
plain boiled water