How can I tell if tap water is contaminated?

Some organic matter is colorless and odorless, and it is difficult to see it with the naked eye in the water body, but it is sticky. If you find that your water body has a certain stickiness, the specific performance is that there is a hanging wire when the faucet is closed (pay attention to distinguish the normal characteristics of water droplets), chopsticks can be drawn, and it feels smooth when you wash your hands.

Some families are located in the vicinity of factories that produce highly toxic substances or discharge highly toxic waste, and tap water or well water may be contaminated with highly toxic pollutants at any time. In order to monitor the safety of your own water body, you can use your own tap water or well water to raise some small fish, and look at the life status of the small fish to determine whether the water body is polluted by highly toxic substances. <>

Inorganic substances pollute water bodies and may be colorless and odorless, but often manifest as scale. Therefore, if you find that the scale of your household water is abnormal, it is likely that the water body has been polluted by inorganic substances. This scale anomaly manifests itself in several ways:

First, there has been scale for a long time, but the scale has been fast and large in recent years; The second is that there was no scale in the past, and scale has suddenly continued to appear in the near future; Third, there has been limescale in the past, but recently the scale suddenly disappears or decreases sharply, and the scale in the container disappears automatically (this situation occurs when the tap water is polluted by strong acids or alkalis).

At present, there are various serious pollution sources and potential safety hazards around the water sources and transmission pipelines of many residents' domestic water, and the situation of self-drilled wells is not optimistic. Many residents do not have detailed knowledge of water pollution, and ordinary households do not have various testing equipment and reagents, so it is necessary to know a little bit of knowledge about looking, smelling, tasting, and inspecting water pollution.

Many pollutants have a strong odor, so when these pollutants penetrate into the water body, the water body will also have a peculiar smell, for example, in the case of benzene pollution in tap water in Lanzhou, there were already signs before. If you smell a peculiar smell of water in your home, you should be vigilant, stop using it in time and find out the source of pollution.

Many pollutants have a color when dissolved in water, so when these pollutants pollute a water body, tap water or well water will have a color. Once the water in your home changes color, it proves that it is contaminated, and you need to take action. <>

Of course, it is necessary to pay attention to the difference between the water bodies polluted by the pipes themselves. Some pipes will rust, and the water will also be polluted after rusting, but the discoloration caused by this situation will generally appear for the first time every day, and the color will disappear after a while, and it will not change color for a long time. In some areas, oil and gas fields or shale gas mines are located, and the use of hydraulic fracturing and other technologies to exploit natural gas resources such as shale gas will lead to the contamination of groundwater, and combustible gases such as methane and chemical mud used in extraction will seep into the water body.

Therefore, when it is found that your tap water or well water can be ignited, it proves that the water body is polluted.

Sewage and other water seeping into groundwater may contaminate well water, and some sewage can seep into the water system, causing microbial contamination of domestic water. If you find small insects, algae, mosses and other organisms in your water body, it is a proof that you are polluted by sewage.

Explanation: The China Water Management Department stipulates that the TDS value range of domestic tap water should be less than 300ppm; The TDS value range of pure water should be less than 5ppm; The TDS value of mineral water should range between 100-200ppm. Therefore, the TDS value range of tap water quality should be below 300ppm to be considered qualified.

There are other ways to test water quality:

Method 1: Look.

Fill a glass of water with a clean and stainless porcelain bowl, look at a place with enough light to see if there are any fine substances in the suspended water, let it stand for about three hours, and then observe whether there is sediment at the bottom of the cup? If there is, it means that the suspended impurities in the water are seriously exceeded, and it is necessary to use a water purifier for terminal water purification treatment.

Method 2: Smell.

Pick up a glass of water as far away from the tap as possible, and then smell it to see if there is a strong smell of bleaching powder (chlorine)? If you can smell the smell of bleaching powder, it means that the residual chlorine in the tap water exceeds the standard, and the water purifier must also be used for terminal treatment.

Method 3: Taste.

If the taste of the water is not sweet, but there is a smell of bleached water, this is also the phenomenon of excessive bleaching powder.

Method 4: Looking.

Make tea with tap water, observe whether the tea turns black overnight, if the tea turns black, it is the tap water that contains iron and manganese seriously exceeds the standard, so the water quality should be selected with a water purifier with filter rust for terminal treatment.

Method 5: Product.

Taste boiled water, whether there is an astringent feeling in the taste, if there is, it means that the hardness of the water is too high, and the hardness is too high to have a very bad impact on itself, do you say to install a water purifier? RO reverse osmosis water purifier can be installed for treatment, and the treated water tastes better.

Method 6: Check.

Check the inner wall of the water heater and boiling kettle at home, whether there is a layer of scale, if the hardness of the water is too high, the calcium and magnesium content is too high, try to use a pure water machine to purify, pay attention to the water with too high hardness can easily make people get various stone diseases.

1. Detect with pH test strip.

The pH value is around (weakly alkaline water is good for the body.) (More than 8 is alkaline poisoning), the normal pH value of human body fluids is weakly alkaline), if the pH value of body fluids is acidified, then it is already cancer-prone constitution. If this progresses in the long run, there is a high chance of inducing cancer.

2. Tested with purple cabbage juice.

If the purple cabbage juice reagent turns red, the water is acidic; If it turns green, the water is alkaline; If it does not change, it means that the water is neutral.

3. Detect with silverware.

Take a silver needle and put it in the water, and after a while, if the water turns black, it means that the water is poisonous. This method was most frequently used in ancient times, and it can also be used to detect whether food is poisonous.

Extended Information: Contraindications to drinking water: Do not overdose.

Drinking less water is not good, but excessive drinking can also cause poisoning, people may be unfamiliar with this view, in fact, as early as the 30s of the 20th century, the United States has reported cases of water poisoning caused by large amounts of water.

Water makes up about 60 to 70 percent of the body's body weight and is relatively stable in the body. The cell membrane of human cells is a semi-permeable membrane, water can penetrate freely, if you drink too much water, the blood and interstitial fluid will be replenished and balanced, the osmotic pressure will be reduced, and the water will penetrate into the cell, causing the cell to swell and cause water poisoning.

Once the brain cells are edema, the pressure in the skull will increase, resulting in dizziness, brain swelling, headache, vomiting, fatigue, blurred vision, drowsiness, slowed breathing, deceleration of heart rhythm, and in severe cases, coma, convulsions and even life-threatening.

In the case of water intoxication, there is too much water in the blood, the concentration of sodium chloride in the blood decreases, and a balanced low blood sodium appears, and the patient experiences generalized muscle pain and cramps.

Summary. Hello dear, complain to the environmental protection department or water affairs department about tap water pollution.

Hello dear, complain to the environmental protection department or water affairs department about tap water pollution.

They will go to the scene with the water conservancy department to see the hall of Xiangxiang. Further information: Tap water pollution is also part of environmental pollution, and you can complain to the local environmental protection department or water affairs department.

Article 4 of the Water Pollution Prevention and Control Law of the People's Republic of China: The people at or above the county level shall incorporate the protection of the water environment into the national economic and social development plan. The local people at all levels are responsible for the quality of the water environment in their respective administrative areas, and shall take timely measures to prevent and control water pollution.

Hello dear, there is nothing polluting in the waterworks. The tap water produced by the waterworks should meet the national and local water quality standards and be safe to drink. However, the source of pollution in the waterworks is likely to come from the wastewater discharged into the sewers, as well as the possible problems of silver pollution in the water source, water treatment, water transmission and distribution, etc.

First of all, there may be a problem with the water source of the waterworks. Urban tap water sources generally come from rivers, Liangpei lakes or groundwater, and these water sources are likely to be polluted by Jingzu only chemical factories, domestic sewage, agricultural discharge, etc. As a result, water plants need to be strictly monitored and treated.

Secondly, there can also be contamination problems in the water treatment process. In order for tap water to meet safety standards, waterworks need to carry out multi-stage filtration, disinfection and other treatment processes on the water source, but chemicals may be used in these processes, which can contaminate the water quality if not treated properly. Finally, contamination can also occur during water transmission and distribution.

In the process of tap water transmission and distribution, the water quality may decline due to problems such as aging pipelines and pollutant adhesion. In general, tap water produced by waterworks is safe to drink, but we also need to pay attention to water safety issues, such as boiling and boiling before drinking. In addition, the water quality testing of waterworks varies from place to place, so it is recommended that you check the local water quality conditions to protect your health.

Hello, regarding whether there is a pollution problem in the waterworks, my opinion is that there may be a certain degree of pollution problems in the production process of the waterworks, but this does not mean that all waterworks have pollution problems. First of all, the main task of the waterworks is to purify the water source so that it meets the national health standards and then give it to the residents.

In this process, the waterworks will use some chemicals, such as chlorinated hand iron, polyaluminium chloride, etc., to remove suspended solids, organic matter and microorganisms from the water. These chemicals can pollute water quality if used incorrectly or in excess. Secondly, when the waterworks treat the water source, they will also produce some by-products such as sludge and wastewater.

If these by-products are not properly disposed of, they can pollute the environment. However, we also cannot generalize that all waterworks have pollution problems. Because the modern waterworks have the purification and treatment equipment and strict management system of the complete family, the pollution problem can be effectively controlled.

At the same time, ** will also supervise and test the water plant to ensure that the quality of the tap water meets the national health standards. In general, there may be a certain degree of pollution problem in the production process of the waterworks, but the modern waterworks can effectively control the pollution problems through perfect purification and treatment equipment and strict management systems. **The waterworks will also be supervised and tested to ensure that the quality of the tap water meets the national health standards.

Hello, how can I measure the quality of tap water by myself? 1. Observe that you can choose a glass with high transparency and put a cup of tap water in the cup. Then look at the composition of the cup water in a place where there is light, if there are floating substances in the water, it means that the water quality may not be particularly good.

If there is no floating substance, you can let it stand for a few hours to continue to observe, if you find that there is no sediment at the bottom of the cup after a few hours of precipitation, it means that your tap water is still relatively clean. 2. After boiling the tap water for drinking, you can taste whether there is the taste of chlorine, chlorine is the so-called bleaching powder, if there is, it means that the chlorine in the tap water is quietly exceeded. In addition, it is okay to use the way of tasting.

When the nose smells a pungent smell, it means that it contains more chlorine. If the tap water has an astringent taste when tasted, then it means that the water quality is relatively hard, and drinking hard water often is not good for the body. 3. It is also a good way to use tea to identify whether the tap water is qualified.

Tea water should be the original color even if it is left overnight, and it will not be harmful to the body. If the tea water suddenly turns black after an overnight stay, it may be a sign that natural water may not be healthy. It contains some iron and manganese that may exceed the standard, and everyone should try to avoid drinking it to prevent diseases in the body.

4. Check the water heater and boiling kettle at home, and usually need to use tap water. You can check the water heater in your home.

At present, there are three main reasons for the poor quality of drinking water: first, the source is polluted, factory sewage, automobile exhaust and excessive pesticides lead to many water problems, such as illegal sewage discharge and domestic sewage pollution in small and medium-sized factories; Second, in the process of transportation, most of the water pipes used in the early days are galvanized pipes or steel pipes, which are especially common in some old urban areas, and the water pipes are easy to rust after aging, resulting in high lead content, especially in welded places; The third is water pipe leakage: China's water pipeline network has 40%-50% leakage ratio, once the power and water outage, the water pipe will be opened into negative pressure, suction, then there is a damaged place will seep into the surface of the dirty water impurities, such as the place around the loss of the pipe there are hospitals, farms, garbage heaps, sewage pools, etc., 40%-50% of the leakage ratio is enough for us to have a chance to encounter, but you don't know, any harmful substances take advantage of the void is what you must bear. Fourth, the water storage is not clean, because the floor is higher, the tap water can not reach the high-rise, so the water tank has to be built on the roof, and then the booster pump is used to supply water to the water tank.