Never cook directly with tap water, be sure to read

When cooking food in a pot, be sure to use boiling water or filtered water. Because if you use tap water directly, tap water contains chlorine. After heating, the chlorine will be completely covered on the food because the pot lid is covered. Therefore, you must use boiled water or water that has been filtered to remove the chlorine to steam food. Because chlorine is carcinogenic. This is really important! Even if you are just steaming buns, cooking rice, etc., you should have this common sense!!

1. What is the main method of tap water disinfection and sterilization at present?

Answer: China’s current tap water purification method is: chlorine sterilization; the tap water purification method in developed countries and regions in the world is: ultraviolet and ozone technology sterilization.

2. What is chlorine?

Answer: Chlorine is a yellow-green gas with a strong suffocating odor and is poisonous. It is a very strong oxidant and can form phosgene when in contact with carbon dioxide. It can be liquefied into liquid chlorine under high pressure. Its density is 2.48kg/m3, its melting point is -102℃, its boiling point is -34.6℃, it appears as white smoke in the air, and it is easily soluble in water, alcohol and ether. Its aqueous solution is called hydrochloric acid.

3.Why is chlorine added to tap water?

Answer: Tap water should be a hygienic and safe drinking water, but due to environmental pollution, bacteria and other harmful substances in the water grow in large quantities. In order to inhibit and kill the bacteria in the water, chlorine is added during the water treatment process.

4.What harm does chlorine do to the human body?

Answer: Chlorine gas is seriously harmful to the human body. It can irritate the eyes, nose, throat and upper respiratory tract. It causes acute pulmonary edema and pneumonia; at high concentrations it can paralyze the respiratory center and cause "flash death". Long-term inhalation of low concentrations of chlorine can cause chronic poisoning, leading to the production of a large number of free radicals in the body and accelerating the aging of the body. The main diseases are rhinitis, chronic bronchitis, emphysema, cirrhosis, atherosclerosis, and even cancer.

When chlorine is added to water, it can cause your hair to become dry, broken, and split, and it can also cause your skin to bleach, peel off, and develop extremely itchy psoriasis allergies. When chlorine is heated, it reacts with organic matter in water to produce carcinogens such as chloroform.

5. What is the effect of water containing residual chlorine on washing vegetables, fruits, grains, etc.?

Answer: Chlorine will destroy the vitamins, minerals and other nutrients in vegetables, fruits and grains, seriously affecting the body's absorption of nutrients.

6.How does residual chlorine enter the human body?

Answer: Chlorine used in tap water is easily and quickly absorbed by any oxidized surface with pores such as skin, nostrils, mouth, lungs, hair, eyes, meat, fruits and vegetables.

Why is residual chlorine easily absorbed through human skin?

Answer: Because the surface of human skin is covered with pores and sweat glands, the moment it comes into contact with tap water, residual chlorine can easily enter through these tiny pores and be absorbed by the human skin.

7. What are the hazards of taking a bath with water containing residual chlorine for a long time?

Answer: When you take a shower with tap water containing residual chlorine, 40% of the total chlorine in the bathroom is inhaled through the respiratory tract, and 30% is absorbed by the skin, which is 6 to 8 times the chlorine that enters the human body through drinking. In mild cases, it will cause itching, and the cancer risk will increase by 30% by middle age.

What diseases can long-term drinking of water containing residual chlorine lead to?

A: Symptoms such as heart disease, coronary atherosclerosis, anemia, bladder cancer, liver cancer, colorectal cancer, hypertension and allergies.

8.What harm does residual chlorine do to children?

Answer: When bathing children with tap water, chlorine can cause dry, broken and split hair, bleach the skin, cause skin shedding and produce extremely itchy psoriasis allergies. When chlorine interacts with organic matter, such as sweat, it can easily cause nitrogen trichloride to form in the surrounding air, which can easily damage the eyes and throat. When chlorine is inhaled into the lungs through the respiratory tract, it can damage respiratory cells (Clara cells), leading to asthma and emphysema.

9.What harm does residual chlorine do to pregnant women?

Answer: If pregnant women drink tap water containing chlorine for a long time, it will affect the growth of the fetal heart and lungs, and may cause neonatal arrhythmia, heart failure, and lung functional disorders.

What harm does residual chlorine do to the elderly?

Answer: It can cause atherosclerosis, heart failure, arteriosclerosis, heart disease, bladder cancer, liver cancer, rectal cancer, and hypertension.

10.How to remove residual chlorine from tap water?

(If we do the following, our tap water is still very safe)

Answer: (1) The best and simplest way is to simply place the container in the water and let it sit for a while, especially in the sun, and the residual chlorine will evaporate. (2) Heat and boil. After the water boils, open the lid of the kettle and boil it for about one minute. The solubility of chlorine in water will decrease (the solubility of gas in water decreases with increasing temperature), making it easier for chlorine to escape. (3) Some commercially available drinking water filters also have a removal function.