People who sell water purifiers always say that tap water is not clean, but the water company is silent. Why?

My family has been drinking tap water for decades, and only tap water is qualified. Never pursue all kinds of water purifiers. Water purifiers are not often cleaned, the water quality is dirtier, tap water is separated by water purifiers, and some necessary components are also separated. Needless to say, drinking water from the water purifier is not good for your health.

A highly educated couple, in order to create a good nutritional environment for their children, their home is full of pure water from birth. At the age of seven, their children's intelligence is almost the same as that of three-year-old children. When they go to many places, they can't find any problems. Finally, an old expert found the problem. After drinking high-purity water all the time, water will absorb trace elements in the body, which will lead to a serious lack of trace elements for a long time. Water is the carrier, too clean will take away the elements in the body.

More than a decade ago, tap water in Changsha would make thermos bottles scale, but now it will not scale basically, and the water quality is very good. Now that the water pipes have been changed, there is little pollution caused by them. Basically, only by digging a road to expose the water pipe will the water turn yellow after it is repaired, and the old water pipe will rust 20 years ago. One night, the water just coming out of the tap will be black or yellow, and the new water pipe will basically not have this problem.

The water quality of tap water varies from place to place, and then it will be polluted by pipeline transportation. It is generally not recommended to drink tap water directly. It is beneficial to install water purifiers, especially reverse osmosis water purifiers. As for the lack of minerals in pure water, it can be obtained from other foods.

Simply put, unqualified tap water is ignorance. First of all, no matter whether the water company you are talking about is a municipal water company or not, the water in the water plant is qualified. After many inspection procedures, it may be contaminated when it is transferred to the secondary pipeline, that is, it is not a tap water pipeline. It is mentioned in the article that the water becomes worse after stopping water supply, which is generally the water supply for high-rise buildings. This mode of water supply has been abolished and needs to be reformed. Many communities in Beijing dig their own wells for water supply, not water supply companies, and some houses in rural areas are accessible. Seventy years after the founding of the People's Republic of China, Beijing is not all flowing water, but it misses the whole country.

The dirty water after the water stop is the problem of the pipeline. Used to be an iron pipe. Now we have all new materials here, and the water quality is the same before and after the water stop. Moreover, tap water itself is purified and harmless to human body. The country can't be careless about this kind of thing.

This is the origin of the disease of wealth. It seems that many rich people pay more attention to the quality of life, but they don't know that they are slowly killing their health. A cup of tap water is really not as good as the water in the filter, and the trace elements in it are all gone after filtration, so they know how to taste. Nowadays, many people are overnourished. Every day is like a big fish and big meat, but I can't eat much. After a while, I felt hungry again, which led to malnutrition. It is those who don't pay attention to simple food who are healthy.

Tap water is directly used to boil water. First, there are white scales and white floating objects on the surface of the kettle. Secondly, there is an unspeakable taste. With the water from the water purifier, the kettle is clean, and the water has no peculiar smell, so it is safe to use the water purifier.

White scale is not an impurity in tap water. It exists as ions in natural water, that is, minerals in water. Because you keep evaporating, evaporating, these minerals will precipitate at the bottom. The impurities we usually talk about are heavy metals, sediment, rust, parasites and bacteria, which are filtered out by the water purifier. If you don't want to scale, you need to use a reverse osmosis water purifier, and you can also filter out minerals in the water.

First of all, there is no problem with tap water. I know some water leaders who don't have any water purifiers installed in their homes. They say that tap water comes out strictly, but why should it be filled with pure water? One is that the pipeline is not clean for a long time, especially in some places, the iron pipe rusts for a long time, which leads to unqualified water quality. Another is that the pipeline is not cleaned for a long time, resulting in poor water quality. Moreover, it is necessary to install pure water at home because of the high temperature scale. There is a direct drinking machine under the kitchen, which can be used directly in summer. Usually,

The scale is produced because the water contains limestone, which is produced alternately by cold and heat. Our company is engaged in descaling equipment, physical descaling, installed on metal pipelines, using the generated electromagnetic waves to descale. The traditional scale removal is manual cleaning, and the chemical used in enterprise pipeline scale removal belongs to sulfuric acid.

The process from river water to tap water is very complicated, and it is not just a problem of sedimentation, filtration and disinfection that people think. Moreover, tap water needs to be tested before leaving the factory, and components should be tested every day. Tap water is related to people's livelihood projects, and the government dare not be careless in this regard. If the tap water is not clean, I don't know what else is clean.

The water company is a state-owned enterprise, and others are too lazy to explain. Domestic tap water 100% is safe and can be directly drunk. People have already said it, but there is no publicity. Of course, it won't taste bad just because a lot of chemicals are added, but it won't affect it if you drink it, just it tastes bad. Foreign countries are different. It is not uncommon for private enterprises to do immoral things for the benefit.

Because there is no conflict of interest.

You bought a water purifier without running water? Used more. Will it be unpleasant for water companies to generate more water charges?

Tap water is inherently dirty, and ordinary people have a deep understanding, especially when water is stopped unexpectedly. This is a common phenomenon and irrefutable. However, it was taken away by the water purifier merchants, but people have a factual basis, and the water company naturally cannot argue. However, the merchants said that these words were left behind. The propaganda is that the waterworks are qualified and everything is a pot of pipes. Long-term use of tap water pipes has produced scale and rust, which has polluted the tap water with qualified factory quality. The pipeline is buried in the ground, which has a wide range of influence, so it is impossible to stop water for maintenance in a large area, so this is the only tap water. To adapt and survive, everyone should buy a water purifier.

In fact, the broad masses of the people have accepted the poor quality of tap water and will not find fault with the tap water company, so the tap water company is also happy.

The reason why the water purifier says that the tap water is not clean is because of the interest. In order to let people buy more water purifiers, they will say that tap water has impurities and cannot be drunk directly.

The reason why the water company is silent is because the point promoted by the water purifier seller is to further purify the tap water and get direct drinking water that can be directly drunk, which tap water really can't do.

Tap water tap water is not directly transported from natural lakes and rivers to homes through tap water pipelines, but through a series of purification procedures.

It takes about four steps for tap water to reach our home.

Step one, intercept the water source. We know that many large reservoirs have been built in China, which can not only prevent floods and reduce disasters. Power generation, in addition to providing water resources to waterworks.

For example, Miyun Reservoir in Beijing has a storage capacity of about 2 billion cubic meters, and some of these water sources flow into the tap water pipes of Beijing residents' homes.

The second step is to introduce the water from the reservoir into the waterworks through pipelines. Pipeline transportation is adopted because direct ground transportation will occupy a lot of land resources, which is very expensive and scarce in big cities, and some facilities need to be installed underground. Secondly, if the water in the reservoir is transported to the waterworks through rivers and ditches, most of the water will be evaporated, which is not worth the loss for the water-deficient areas.

The third step is to purify water. Although it is not allowed to build factories and modern facilities around the water in the reservoir, the water in the reservoir still contains a lot of impurities that are not suitable for human consumption.

In this step, the waterworks will add some substances to the water to make it react with the substances in the water to form flocs, which will precipitate under the waterworks.

Then the separated water is injected into the granular filter material layer covered with quartz sand, and fine impurities will also be filtered out in this step.

After that, the water will be sent to the clean water pool for chlorination and disinfection in order to prevent water-borne diseases.

At this time, water purification is completed, and people will also check the water quality. Only when the water quality meets the hygienic standard for drinking water jointly revised by the National Standards Committee and the Ministry of Health can it flow into the pipeline and enter every household.

Step 4, flow into each community through the pipeline. In this step, the most important thing is to monitor the water leakage of the pipeline, because about 10% of tap water is missed in this step every year.

Why can't tap water be drunk? At present, only a few cities in China can realize direct drinking water, but tap water in most cities can not be used directly, and it needs to be boiled or filtered before it can be used.

The reason why this happens is that tap water meets the hygienic standard of drinking water in China, but the pipeline can't guarantee the strict transportation of tap water during transportation, which leads to the secondary pollution of tap water in the pipeline.

Also, the construction of tap water pipelines in China is earlier, and many pipelines are not built according to the standard of direct drinking water, so tap water cannot be directly drunk. In addition, our tap water pipes may rust and age, causing water pollution.

It is precisely because of various reasons that tap water in China cannot be directly drunk and needs to be treated again before it can be used. The most common processing method is boiling.

However, the disadvantage of boiling water is that it is too hot. In summer, many people want to drink water with the right temperature directly, so they need a water purifier.

There are many kinds of water purifiers in the water purifier market, mainly including ultrafiltration membrane, RO reverse osmosis membrane and nanofiltration membrane, but no matter which technology, it is essentially to absorb impurity particles in water and clean impurities in water.

In essence, the waterworks also cleaned the impurities in the water, but the water purifier further purified the tap water, which can absorb the newly generated impurity particles in the water transportation process. So the water is relatively clean at this time, and we can directly drink the water in the water purifier.

However, it should be noted that the water purifier can only purify tap water, but not the water in natural lakes. This is because natural lakes may contain too many heavy metals or other harmful substances, and household water purifiers generally cannot effectively absorb heavy metals, nor can they filter microorganisms in water (microorganisms are very small).

In addition, people should replace the filter element in time after using the water purifier for a period of time, so as not to affect the filtering effect.

But one more thing, although the water purifier can purify the impurities in the water, all this must be carried out under the condition that the water purifier has quality. At present, the quality of water purifiers on the market is mixed, which needs people to pay attention to distinguish.

Tap water, according to the national drinking water standard, is qualified, neither unclean nor clean. Most tap water comes from rivers and lakes. Where there is a river, there are tributaries. There will be water discharged from farmland and water flowing on the surface in the tributaries. There are fertilizers and pesticides in the water discharged from farmland. Water flowing on the surface contains various pollutants. Now all kinds of cancers are high, and it is inseparable from this drinking water. The water purifier must be reverse osmosis, otherwise it is deceptive. The filtration accuracy of reverse osmosis reaches 0.000 1 micron. It can effectively remove rust and sediment, large impurities and residual chlorine odor in water, and filter out invisible inorganic substances, heavy metals, bacteria and organic substances. Such as penicillin, dichlorvos, herbicides and fertilizers dissolved in water. These particles are all larger than 1‰ micron. Basically, it can be completely filtered. Some experts say that drinking tap water can supplement trace elements such as calcium and magnesium, and filtration will be gone. The content of these elements in food far exceeds a few glasses of water. Water in front of food, the content of trace elements is almost negligible. So don't worry about it at all. Reverse osmosis water purifier is definitely a necessity for your life. It doesn't matter what brand, it must be reverse osmosis.

I work in water treatment, and I know a lot about it. Let me say something.

Tap water goes through several processes such as flocculation, sedimentation, filtration and disinfection. The water with residual chlorine content is qualified, and there are routine water quality testing items in the normal PH range.

The water used by every household is terminal water, and the water in the water pipe has to walk a long way in the pipeline, and the residual chlorine content in the water will be gradually consumed.

At present, the urban water supply network will set up a return pipeline at a certain position. When the water consumption is low, the excess water in the pipeline will automatically return to the water plant for reprocessing and re-leaving the factory to ensure the water quality.

As long as the water keeps flowing, the water quality will be fine.

There are some cast iron pipes, some cement pipes and some PE pipes in the current water pipe network. Different materials are due to the different time to build the pipe network.

Turn on the faucet after stopping water for a period of time, and yellow water will appear because the water does not flow when stopping water, the iron pipe in the iron water pipe oxidizes to produce rust, and sludge accumulates in the pipeline after long-term operation. After the water is stopped, the impact of the water will wash out these sediments, so let the water out until it is clear.

Selling water purifiers is nothing more than reprocessing the tap water we usually use. If the filter element in the water purifier is clean, then the treated water is indeed cleaner than the tap water for direct drinking. However, if the filter element of the water purifier is not cleaned and replaced for a long time, the bacteria growing on the filter element will filter the water again and the water will be dirty.

The water purifier mainly filters out impurities in water. When using the water purifier, the filter element must be cleaned and replaced regularly.

Quite simply, there is no conflict of interest between the two, because the use of the water purifier will not affect the consumption of tap water. As for those who sell water purifiers, the tap water is not clean. This is the marketing routine of water purifier merchants. Don't be cheated!

No matter which water purifier company, it will advertise that the tap water is dirty while indicating the water level of its own water purifier. But in fact, tap water is still very clean. According to China's strict standards, tap water must be disinfected and purified by waterworks before we can use it. Must pass 100 tests before leaving the factory.

So in general, the quality of tap water can still be guaranteed, but with the gradual improvement of people's quality of life, everyone is pursuing higher standards. Although the tap water is clean, it still can't reach the level of direct drinking. Because of the disinfection process of tap water, tap water will contain a small amount of chlorine Chlorine is harmful to human body. Of course you can't use it directly. However, after the tap water is boiled, all chlorine can be evaporated. At the same time, some tap water can't be checked with the naked eye. Due to the aging of water supply pipes, tap water will also contain metal impurities such as iron and copper, which is also a serious problem to the environment.

Just say one thing I'm sure of. I manage the kitchen, which is bigger. Basically, there are many large steaming cabinets in the kitchen, which have been used to burn electricity and gas. The steamer is connected with a water pipe, and water enters the water tank at the bottom of the steamer, and then is heated by electricity or gas to generate steam. When the water evaporated by steam decreases, the water pipe will be automatically filled with water to maintain a fixed water value. I asked the chef to clean the water tank of the steamer once a week and the stones removed from the steamer once a week. It's the impurities left after water turns into steam and volatilizes, and the impurities agglomerate. Does this mean that there are many impurities in tap water?

In addition, the kitchen is equipped with filters and a lot of them are installed. The filter element is also replaced according to the instructions, even if the time is shorter than the instructions. In addition, it can be confirmed that the faucet with filter element uses far more water than the steamer, but it looks dirty every time the filter element is changed, but the amount of impurities is definitely much less than the stones formed by the steamer. I judge that the filter screen can filter impurities, but it can only filter a small part, which is of little use. I might as well get used to it.

I will elaborate on this question, because I have studied it as a consumer and asked relevant personnel.

Start with a lecture on selling water purifiers (MLM)

First, they stressed that tap water contains chlorine. This is true, because our tap water disinfection mainly uses chlorine gas, as well as chlorine dioxide and ozone, which are used less.

Chlorine gas dissolves in water to produce hypochlorous acid. Will something go wrong with this thing?

I don't want to say too many professional words, just two points:

1, hypochlorous acid photolysis.

2, hypochlorous acid is decomposed by heat.

Tap water has a little residual hypochlorous acid, but when it comes out of the water pipe and enters your mouth, is it illuminated and heated?

First of all, my grandparents drank well water, river water and tap water all their lives, and they all lived to 90+

Then, for example, you are not allowed, OK.

I specifically asked a friend of the water company, and they said that our tap water was drawn from the bottom of the drinking reservoir 30 meters away, and it has been tested countless times.

Testing and disinfection are strictly controlled by national standards. Do you dare to give it to the people if you can't meet the standard? How many years do you want to go in?

Second, they say the water pipes are not clean. Let me show you some photos of rusty iron pipes. Iron pipes do have the risk of pollution, which is true, but now they are all PB and PP pipes, big brother. Simply put, it is a plastic pipe.

If your community is still using iron water pipes from the 1980s and 1990s, then you really need a water purifier, which is really necessary, because it is likely to contain impurities such as rust.

As for the long-term use of plastic pipes, will they also be polluted?

If it takes too long, it will, so usually when the service life can't be cleaned, the upgraded pipeline will be replaced.

Third, they said that the reservoir in the community was polluted twice, and the property did not flush the reservoir. I believe there are still many normal people in this world. At least our property here stipulates that the water tank should be cleaned at least once every six months. Wash it 2-4 times a year later, and the water quality may be good for 2 times and poor for 3.4 times.

During this period, the high-rise water stopped for half a day, and the low-rise was fine.

However, it does not rule out that there is really a kind of black property company that does not wash the reservoir for three years. You should pay attention. If you live on a high floor and the property never announces that you want to wash the pool, it will be a bit troublesome.

But then again, if the property really doesn't wash the pool, there are dead mice in the pool and so on, which leads to the pollution of the water source. Is it useful for you to use the water purifier

This situation is not solved from the root cause, and it is not impossible to expect the water purifier to be safe.

Conclusion: In a word,

Is the water purifier useful?

There must be.

Do ordinary families have to buy it?

Definitely not.

What about the purchase? What kind do you want?

It's a long story here I can only tell you that there are many kinds of water purifiers, such as ultrafiltration and reverse osmosis. Check it before buying.

Don't be deceived by unscrupulous profiteers. Money is a trivial matter, and spending money without effect is the most irritating thing!

1, for the water supply company, under normal circumstances, the water quality of the water outlet plant can be guaranteed, but various pipes circulate in the middle until your faucet is unclear, which may be polluted by some impurities.

Tap water can guarantee trace elements in human body, but many trace elements are filtered out after purified water, which may not be good for the body. Will it be troublesome if people lack this trace element?

3, selling water purifiers will generally filter water more cleanly, so it will not affect the reputation of water companies, and both can survive. Why not?

The quality of water purifier is different for every family. Even if you pay the money, you may not be able to buy a good product.

Tap water has been filtered by water purifier. Why do many people still get sick? It shows that he did not play a filtering role, and the missing trace elements in the human body were filtered out. Isn't the cleaner the better? As the old saying goes, it doesn't matter if you eat unclean things. If the human body's resistance is low, it is natural to get sick.

6. If the water purifier company doesn't say that the tap water is unclean, can his water purifier be sold? This is just a marketing tool. Everyone influences each other and does not interfere with each other, right? What he means is that the tap water is not clean, so can you not drink tap water? This is a necessary consumption, there is no way. I can only say that I give some reasonable suggestions to the water company.

7, the water company thought, you say yours, you sell yours, it has nothing to do with me, you will definitely not make my water worse. At most, it may be that your faucet is unqualified, but it has nothing to do with the water company.

Hello, I'm Lao Yang, who is engaged in indoor environmental testing.

Your question is great. Answer from my experience in testing.

The joke is the same. The effluent from the waterworks is just needed. No matter how good the water purifier you bought is, it is also used to purify my water. Why should our waterworks be anxious?

This is a joke!

According to our actual testing experience, there is almost no problem with tap water in the household water quality we are testing at present. We are a testing organization serving the owners, so we don't have to worry about changing the data for some ulterior reasons.

All indicators of tap water fully meet the water quality standards and can be directly drunk. Pay attention to direct drinking! We think the smell is bad only because of the residual chlorine in the water, which is safe and very safe for human body. So far, global authorities have proved the safety of residual chlorine.

Interestingly, the water purifier, an artifact promoted by many businesses, often goes wrong. In our testing work, we often encounter some brands of water purifiers, and the water quality after purification is unqualified, and the water quality after purification becomes worse. We don't know whether it's a water purifier or a blowdown. Let's look at several groups of pictures.

Have you noticed? The problem of many water purifiers is that they will release pollutants, and some problems are that the purification technical indicators are not up to standard, resulting in bacteria exceeding the standard.

So I said that if there is a problem with water quality, it must be solved step by step.

1, worried about the change of water quality and taste, you can do the test.

2. If the turbidity is high, please contact the property and water supply company to clean the water tank.

3. If the heavy metal exceeds the standard, the copper tube used at home should be replaced first.

4. According to the water quality problem, choose the purification technology corresponding to the technology. Such as ion exchange resin, reverse osmosis, ultrafiltration, activated carbon, etc.

Water supply is a matter of people's livelihood. If the water supply is polluted, it is a very serious livelihood event.

One more question. In order to promote their products, many water purifier sales companies cheat owners by various means and vilify tap water in various ways. I believe that products sold by fraudulent means lack moral constraints, and their products must be not so good!