What happens when the water in the tap water at home turns white after boiling?

The whitish color of tap water after boiling it may be due to the following reasons:

1.Air dissolves into the water supply network and breaks down into tiny bubbles that are difficult to see with the naked eye. The tight arrangement of the bubbles gives the water a milky white color.

When left in the container for a few minutes, the water will clear as the bubbles disappear. This phenomenon does not affect the quality of tap water.

2.Some secondary water supply tanks exceed the microbial standard, and bleach powder is added to produce a slight white-gray color. Because the main components of bleaching powder are Ca(CLO2), Ca(OH)2, CaC L2 and other white powders, when a large amount of water is put into the water, the color of the outgoing water is a slight white-gray, and can smell a slight pungent chlorine odor, and after standing for a few minutes, there is a small amount of tiny particle precipitation.

This phenomenon does not endanger human health.

3.When the water is boiled, the solubility of calcium and magnesium ions decreases and precipitates, making the water soft, which is one of the reasons for the appearance of white substances in the boiled water.

All of the above reasons may cause the tap water to turn whitish after boiling, so in order to ensure the safety of water quality, it is recommended that you use a filter or go to a relevant institution for water quality testing.

After the tap water at home is boiled, the color is whitish, and it stands to reason that after the tap water is boiled, it should be colorless and transparent. If you say that the color is whitish, it should be that the bubbles produced are cloudy in the water, that is to say, there may be oil in the water, if there is no oil, it means that the proportion of water in the water is relatively high, the calcium content is relatively high, and calcium compounds are born.

The reason for the white substance produced after the tap water is boiled is that the carbon dioxide contained in the water escapes after heating, and the calcium carbonate in the water is insoluble in the hot water, and is released, forming a white precipitate.

This white precipitate is mainly due to the calcium carbonate precipitate in the water, which is a less soluble substance in the water that escapes to form a white precipitate after heating. In addition, other dissolved substances present in the water, such as sulfates, sulfides, etc., will also form white precipitates under certain conditions.

It should be noted that tap water contains a variety of different minerals and impurities, and the lead service of water sources varies greatly from region to region, resulting in different levels of minerals in the water, so the causes of white precipitate produced by boiling tap water in different regions will also be different.

In addition, it should be reminded that if there is a large amount of white precipitation after the tap water is boiled, it may be a problem with the water quality, and some impurities and harmful substances such as heavy metals are mixed into the water, which poses a potential threat to human health, and it is necessary to stop using the tap water in time and check the water quality.

Therefore, when we use tap water, we should pay attention to the quality and quality of tap water, as well as whether there is white precipitation after boiling, and deal with water quality problems in time to ensure that we drink safe and healthy water. <>

The whitening of tap water may be due to the fact that the water pipe contains a large amount of air, causing the water and gas to fuse together, and when the tap water flows out, it will appear white, or it may be that the tap water is sprinkled with bleaching powder to kill the bacteria in it, and the tap water can disappear after precipitating for a while, and the tap water cannot be directly drunk, and it needs to be completely heated first.

Why does tap water turn white.

1. Dissolve into air.

When the tap water circulates in the water pipe, the air in the water pipe will gradually dissolve in the tap water, and then the pressure of the tap water becomes smaller when it flows out, and the air overflows from the tap water, which can appear white.

2. Contains bleaching powder.

The whitening of tap water may be due to the fact that it contains bleaching powder, because tap water needs to be disinfected before it can be transported to various users, so tap water needs to be added with bleach containing hypochlorous acid before transportation, and the tap water needs to be left for a period of time to disappear.

3. Precautions.

Although tap water has been sterilized, it is still not allowed to be drunk directly because it may contain unkilled bacteria and parasites, and if drunk directly, it may affect the gastrointestinal health of the human body, so it needs to be completely heated before drinking.

Tap water refers to the water produced by the tap water treatment plant after purification and disinfection that meets the corresponding standards for people's life and production. Domestic water is mainly absorbed from rivers, lakes, groundwater and surface water through the water intake pumping station of the water plant, which is treated by the waterworks in accordance with the relevant health standards for domestic drinking water, through precipitation, disinfection, filtration and other technological processes, and finally transported to various users through the water distribution pumping station.

The water that has just been released from the faucet contains many small bubbles, which look white to the naked eye, and after a while, the bubbles burst and the air is released from the water, and it will become clear.

The main causes of whitish tap water are as follows:

1. If the tap water becomes clear after standing for a few minutes, it is usually caused by excessive water pressure (more common in the canteens and dormitories of enterprises and institutions) rather than impurities.

2. The tap water penetrates deep into the gas, and decomposes into tiny bubbles by pressure, which looks milky white, and after a few minutes of stationary, the bubbles will disappear by themselves, and the water quality will become clear. This phenomenon does not affect the water quality. For example, if the main pipeline of the city is broken, the water plant needs to stop the water for emergency repair, and when the main water pipe is repaired, the water in the main water pipeline must be emptied to fill the leakage.

During the water outage, the main pipe is empty and there is no water. When the pipe is repaired, the water is connected, and the pressure is pressurized, there is a large amount of air in the water pipe, and the water and gas are dissolved into a rest during the flow and transportation of water. When it is released, the pressure is released, and the air is precipitated, just like you shake a bottle of wine up and down, and the clear wine quickly becomes as white as rice water, and immediately returns to clear after it is still.

If too much bleach powder is added, the water is slightly white-gray, and there will be a slight pungent chlorine smell when released, and the purpose of adding bleaching powder is generally to kill E. coli and not affect the health of drinking water.

Summary. Dear, that layer of white stuff is limescale. The main components of limescale are calcium carbonate and magnesium carbonate.

Tap water, after a series of treatments, there are still some slightly soluble calcium bicarbonate and magnesium bicarbonate in the water, when heated and boiling, the unstable bicarbonate decomposes into carbonate, carbon dioxide and water, forming calcium carbonate and magnesium carbonate, which are insoluble in water, so they are precipitated and attached to the bottom of the pot (mainly precipitated) and around the pot, forming white scale.

Dear, that layer of white stuff is limescale. The main components of limescale are calcium carbonate and magnesium carbonate. Tap water, after a series of treatment, there are still some calcium bicarbonate and magnesium bicarbonate in the water that are slightly dissolved in the water, and when the trace is heated and boiled, the unstable bicarbonate is decomposed into carbonate, carbon dioxide and water to form calcium carbonate and magnesium carbonate, which are insoluble in water, so they are precipitated and attached to the bottom of the pot (mainly precipitated in the state file) and around the pot, forming white scale.

Pro, after the tap water is boiled, the white nucleus floats are calcium and magnesium ion crystals. Tap water and well water contain calcium and magnesium ions to varying degrees. At room temperature, these ions are dissolved in water, and after the water is boiled, calcium and magnesium ions are precipitated, and the crystalline white float floats on top of the water.

These empty calcium and magnesium ions dissolved in water cannot be filtered out at room temperature, and the white floating matter formed is not harmful to the human body.