The safety hazard of community water dispenser is advised to boil after drinking.
the Emperor Qianlong of Shun network has carried a small scale to weigh the weight of the water. It is concluded that the Yuquan spring water is the lightest water and the water quality is the best; the modern people measure the water hardness by measuring the unit value of calcium and magnesium ions to judge the water quality. 80% of human diseases and 50% of children's diseases are related to water pollution. Water is so important to our life. How can we ensure the safety of our drinking water? In November 18th, in the Forum on "drinking water safety and drinking water treatment technology" sponsored by the health drinking water Specialized Committee of China National Health Association, the water experts, officials and enterprises at the meeting discussed a lot of problems about the safety of drinking water.
dialogue
Ma Jin Ya: the water scale is not
the water quality of Beijing tap water is better
New Beijing newspaper (hereinafter referred to as "new"): I found that the water of the tap water in Beijing is more serious after the boiling water is boiling, can such water drink? What is the water quality of the tap water in Beijing?
Ma Jin Ya (China National Health Association health drinking water Specialized Committee standing vice director, secretary general, hereinafter referred to as "horse"): Beijing's water in the country is better water quality, most of the water is from the high quality water source, the protection of the water source is also in place. Of course, there are also some areas such as Fengtai and Fangshan, which lack serious water, and Daxing and Tongzhou belong to high fluorine areas. At present, the Beijing Municipal Health Bureau is planning to start drinking water health projects in 12th Five-Year, so that people can drink more water.
calcium and magnesium ions do not exceed 450 mg / L - NDT
New: have you mentioned that drinking water in some places is "safe and unhealthy", and is the scale of the tap water safe and healthy?
horse: there are many factors to form scale. In general, when the hardness of water (the value of calcium and magnesium ions) exceeds 280 mg / L, scaling will occur to 300 mg / L, the higher the hardness, the more scaling, and the increase from the white powder to the sheet.
most experts believe that scaling is not harmful to the human body. The water hardness of the national standard does not exceed 450 mg / L, which means that each person drinks 2 liters of hardness of 450 mg / L per day for 70 years, and the water is still safe for the human body. People's sense of ill feeling against scale is mainly psychological. They have an instinctive insecurity towards floating objects. Besides, they also have high mouthfeel requirements.
water vending machine has more security risks, and the water is recommended to boil and drink
New: many families in Beijing use the automatic water system in the community. Can the water hit in the automatic water vending machine be directly drinkable?
horse: there is no uniform management standard for automatic water dispenser in the community. Community automatic water dispenser is convenient for people, but there are also great security risks. Such as climate, environmental impact, flies, mosquitoes, and sabotage. In addition, because the water sale machine is divided into several levels of filter, each section of the filter core, membrane should be changed regularly, such as the general primary filter core needs to be replaced once in 3 months, if not in accordance with technical specifications and timely replacement, the water may be not as good as tap water, because the water is different from the tap water, it will filter the residual chlorine more easily. Breeding bacteria, microorganisms and other conditions, and can not be identified from the appearance. It is suggested that after the water is sold home, it will still be boiled.
the website of Beijing Quality Supervision Bureau can check the authenticity of barreled water
New: what about the bottled water? Is it a safety standard for drinking water? How do you know if it is qualified?
horse: the barreled water refers to the standard in the range of food and beverage. It is called the GB19298-2003, which is called the hygienic standard for the drinking water of the bottle. The limit standards of colony number and species number are all higher than drinking water safety standards.
New: who will supervise the health and safety of barreled water?
horse: the bottled water in Beijing is supervised by the Quality Supervision Bureau. The "killer" of identifying water quality is to see if the manufacturer has a certified mark and number. Log on to the website of Beijing Quality Supervision Bureau and input the code and manufacturer's name on the bucket to see if QS quality certification can be found. What can be found is true. Basically, we can guarantee water at rest. But remember to go to Beijing Quality Supervision Bureau to check, some manufacturers will be pseudo coding.
-
store a month of
,
one, see the new and old bucket, the big brand of bucket is made from imported raw materials, clear, transparent and clean, if the barrel color is dark and black, it can be judged by the manufacturer to choose the waste bucket and the package does not conform to the national standard. Quasi;
two, the sealing degree of the water bucket cover, the large manufacturer generally chooses the thermoplastic seal, the cover color is bright, the cover material color of the small manufacturer is dark;
three, observation from the printed standard of the package, that is to see the date of production, the date of the factory and the certificate, and try not to use the storage. Barreled water for more than 1 months. If the date of production is not found, the manufacturer is not standard enough;
four and water quality. Look at whether there are suspended solids in the water and see how the water is transparent. Compared with tap water, barreled water should be more transparent.