Tap water charging software Which is safer to share tap water or bottled water?

Water is the source of human life, and all physiological activities of the human body can not be separated from water. Today, Brother Chao answered a question that people are very concerned about. It is also a question that many people often ask me: do you drink tap water or bottled water.

Brother Chao didn't have bottled water when he was a child. He grew up drinking boiled tap water. The water in the north is hard, and there is a thick layer of scale at the bottom of the pot at home. Sometimes when I am thirsty when I run wild outdoors, I drink tap water directly with my friends. I can't remember whether I have trouble with my stomach. I only remember that I didn't care at that time.

With the improvement of residents' living standards and the increase of their health awareness, few urban people now drink tap water directly from the tap. What they worry about is impurities in the pipeline, residual chlorine in the water, and even microorganisms. Some families even use tap water only for washing clothes, drinking and cooking with bottled water. Is barreled water safe?

Let's talk about tap water first

Tap water is natural water processed according to the national standard [1] and produced and checked by local water plants. The waterworks has its own set of perfect treatment methods to ensure that the water to every household is safe and hygienic. One of the important disinfection methods is chlorination of water supply, also known as chlorination of water supply [2]. The main purpose is to prevent water-borne diseases. This method has been popularized for more than 100 years. Each urban water plant basically has relatively complete production technology and equipment. Chlorine used for disinfection of tap water has good disinfection effect and low cost.

Core question 1: Should we worry about the residual chlorine in the water?

As for the statement of containing chlorine, according to the national Sanitary Standard for Drinking Water, the content of residual chlorine in tap water should be less than 0.7 mg per liter of water, which is very low and has no impact on the body. Moreover, the residual chlorine will be further removed in the process of boiling water. When the residual chlorine contains 2 mg per liter of water, people's nose will smell it. So, do you smell the water at home now?

Core question 2: Will the nitrite in the boiled water exceed the standard?

Some people also heard that running water contains nitrate, which will be converted into nitrite by microorganisms. Burning water will lead to the increase of nitrite content, which is harmful to human health. Only half of this question is correct. Nitrate may be contained in tap water, but according to the national standard, it should also be controlled to less than 10 milligrams per liter, which is very low. Microbes can indeed transform nitrate into nitrite, but the possibility of transformation is extremely low with such low nitrate concentration and such low microbial content.

For tap water containing nitrite, some people suspect that part of the water evaporates, which increases the concentration of nitrite. This is also a groundless worry. As mentioned in the previous paragraph, there is very little nitrite in water. Besides, no one can boil water to dry the mouth after drinking it...... Really? You can leave a message.

Core question 3: Is tap water nutritious?

Water, two hydrogens and one oxygen, can not even make you fat. Not to mention the nutrition of tap water, we can also talk about the minerals contained. The water quality varies from place to place. If the local water source is good, the mineral content will be rich.

However, when it comes to minerals, it cannot be denied that the underground water source has excessive fluoride, arsenic, iron, manganese and other problems. However, these heavy metals are within the national standard monitoring range of urban tap water.

To sum up, the tap water that meets the national standards should not be worried, and the boiled tap water should not be worried. The boiled tap water not only retains the original minerals in the tap water, but also softens the water with too high hardness properly, and can kill some microorganisms. If you still have obsessive-compulsive disorder, you can buy filters. This article does not describe how to select filters in detail.