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Multiple neighborhoods have come across! Is there a floating debris after the tap water boils? Can I still drink it?

author:Wenhui.com

Hot summer

Water safety is a renewed concern

Recent

He lives in Yingpu Street, Qingpu District, Shanghai

Old Uncle Wu at No. 29 Chengbei New Village

Encountered an annoyance

After his tap water boiled

There will always be some cotton wool-like ones

White floaters

Multiple neighborhoods have come across! Is there a floating debris after the tap water boils? Can I still drink it?

This made Uncle Wu a little "scared"

"Study medicine" he believes

These "white floaters" are likely

Can cause kidney stones

Multiple neighborhoods have come across! Is there a floating debris after the tap water boils? Can I still drink it?
Multiple neighborhoods have come across! Is there a floating debris after the tap water boils? Can I still drink it?

The water company staff told Mr. Wu

Flotation is mineral precipitation

No harm to the body

And the water quality standards of Shanghai

Exceeds national water quality standards

It is fully up to standard

Completely drinkable

Multiple neighborhoods have come across! Is there a floating debris after the tap water boils? Can I still drink it?

But

Uncle Wu still can't rest assured about this

So come to the reporter and ask

The reporter learned

Uncle Wu lives in Qingpu District

I drink tap water from the Kanazawa Reservoir

The reporter lives in Changning District

It is under the jurisdiction of Chengtou Water Company

The tap water source is Qingcaosha Reservoir

Will there be a difference between the two?

The reporter went home and did an experiment

After boiling tap water with an electric kettle

No abnormalities were observed

But let it sit for about 15-20 minutes later

The surface of the water appeared

White, cotton-like float

With the helper Wu Laobo

The situation encountered is very similar

Multiple neighborhoods have come across! Is there a floating debris after the tap water boils? Can I still drink it?
Multiple neighborhoods have come across! Is there a floating debris after the tap water boils? Can I still drink it?

And residents of other communities in Shanghai

I've had similar problems

Back in 2 years ago

A resident of No. 48, Lane 805, Songhong Road, Shanghai

It was reflected

After boiling your own tap water

There will be patches of white floating objects on the surface

Multiple neighborhoods have come across! Is there a floating debris after the tap water boils? Can I still drink it?
Multiple neighborhoods have come across! Is there a floating debris after the tap water boils? Can I still drink it?

In the community involved

Residents brought out water that had been boiled 20 minutes earlier

Although the utensils for holding water are varied

But without exception

White floaters appeared in the water

Multiple neighborhoods have come across! Is there a floating debris after the tap water boils? Can I still drink it?

But

Households with water purifiers installed in their homes

The situation with white floaters is much better

The citizens are most concerned about

White float after tap water boils

Does drinking it have any effect on the body?

The reporter found it

Qingpu Water Supply Co., Ltd

Director Zhang of the laboratory

She said: There are hardness indicators in general water quality testing, the national standard is not higher than 450 milligrams per liter, and the local standard in Shanghai is not higher than 250 milligrams per liter.

Look at it this way

Water quality standards in Shanghai

It is indeed more than the whole country

For the tap water of Wu Laobo's family, the actual measured value of the water plant does not exceed 160 milligrams per liter, so this water quality is within the normal range.

So what is a white float?

Zhang Ye, director of the laboratory of Shanghai Qingpu Water Supply Co., Ltd.: It is actually a mineral of calcium and magnesium in the water body, in the heating process, hydrogen ions and bicarbonate ions in the water body react, producing magnesium hydroxide, calcium carbonate precipitate, the density is relatively low and floats up, in fact, it is a scale.

With the current treatment methods of the water plant, it cannot be removed.

Multiple neighborhoods have come across! Is there a floating debris after the tap water boils? Can I still drink it?

Drink white floaters

Will there be health effects?

Zhang Ye, director of the laboratory of Shanghai Qingpu Water Supply Co., Ltd.: This situation should continue to exist, the water quality indicators are normal, we think that it can be drunk normally, and there will definitely be no harm to the human body.

Drink water with scale often

Can I get stones? Experts tell the truth

Many people subjectively believe that if you drink water with scale often, you will get stones. But is that really the case?

There is a saying: Although the limescale of white flowers looks disliked, these minerals do not have a big effect on the human body.

After the water is absorbed by the body, the stomach acid will dissolve the magnesium carbonate and calcium carbonate in the scale. In addition to a part that is absorbed and utilized by the body, the part that cannot be decomposed will be excreted with feces.

CCTV's "Is It Real" column has specially conducted experimental investigation for verification, and the results show that within the qualified range of tap water allowed by the state, the concentration of ions cannot reach the concentration of precipitation to form stones.

Also, there is no clear medical evidence that hard water increases the incidence of stones. The main causes of stones are: drinking too little water daily, eating too many foods high in fat and purine. Therefore, stone disease is not caused by calcium and magnesium substances in hard water.

Still, let's talk about scale

Does it really have no effect on us at all?

Not really!

For example, rice cooked with scale is not as delicious as water boiled without scale, and the taste of tea boiled with scale water will be slightly worse, and scale does not look very beautiful...

Experts recommend not drinking freshly boiled water, but allowing it to settle before drinking.

Finally, Director Zhang said: If residents feel really uncomfortable looking at these white floating objects, they can buy nanofiltration or even reverse osmosis to solve it.

Multiple neighborhoods have come across! Is there a floating debris after the tap water boils? Can I still drink it?
Multiple neighborhoods have come across! Is there a floating debris after the tap water boils? Can I still drink it?

However, experts also said

Drinking pure water naturally has no scale

But it's a pity

This way makes the water inside the minerals

It is also filtered out at the same time

Therefore, it is not recommended to drink pure water for a long time

Experts in CCTV13 News Channel's "Weekly Quality Report - Bottled Water Quality Survey" believe that "according to scientific research, pure water is not suitable for long-term drinking". Therefore, in order to maintain good health and electrolyte balance, it is not recommended to drink pure water alone for a long time.

When families use water purifiers, they should be maintained according to the requirements, especially replacing the filter element regularly, otherwise it is easier to cause the growth of bacteria and endanger health.

It turns out that drinking water is also so much particular

One thing is certain, though

Tap water in Shanghai

You can drink it with confidence!

Source|Newsroom, @科普中国, Nong Hao Shanghai

Editor|Wang Qiutong