Tap water, when boiled, is neither acidic nor alkaline, but neutral.

Because today's tap water is commonly disinfected using the chlorination method, which has been promoted for more than 100 years, with better production technology and equipment, which makes the tap water more suitable for drinking after boiling. Therefore, the tap water will be neutral after boiling, and will not be acidic or alkaline.

Tap water can't be consumed directly because it contains some chlorine, which can affect the human body if it is ingested too much. And tap water after long-distance transportation, may be subject to secondary pollution, especially after the aging of the water pipe, which will produce a large number of metal substances, the tap water will be boiled and drink is the best.

Precautions when boiling water

1, open the lid of the kettle when it is almost open

When the water burns to 80 ℃ -90 ℃, the lid should be opened. Because the organic pollutants in the water with volatile, this time to open the lid of the pot will be able to volatilize the vast majority of harmful substances.

2, boil and wait 3 minutes before turning off the fire

Tap water is basically chlorinated will form halogenated hydrocarbons, chloroform and other compounds that affect human health. Water boiling to 100 ℃ after halogenated hydrocarbons and chloroform content began to decline, continue to make the water boil for 3 minutes to reach safe drinking water standards and then turn off the fire. However, it should be noted that boiling water is not the longer the better.

3, water can not be repeatedly burned to drink

The ideal drinking water is fresh water, placed too long water is easily contaminated by microorganisms, so it is best to burn now drink. And try not to boil the water again and again, this way the pure water will be evaporated, so that the water is not volatile in the concentration of other harmful substances increase, so try not to drink.