Summer is the peak of water consumption, and the competition in the drinking water market is also very fierce. At present, there are many kinds of bottled drinking water on the market, which can be summed up in four categories, namely mineral water, purified water, mineral water and mountain spring water. It is necessary for consumers to have an understanding of the concepts of the above types of drinking water when choosing what kind of water to drink is beneficial to their health.

There are two kinds of mineral water, one is the spring water flowing from the deep crust1000-3000m ancient ecological water, and the other is the mineral dissolved water flowing from the surface dissolved rock, both of which come from underground mineral water that is buried deep in the ground, circulated deeply, unpolluted and naturally formed. Under normal circumstances, the chemical composition, water level, water quantity and water temperature of mineral water are relatively stable. The hygienic standard for drinking natural mineral water in China requires that mineral water should contain a certain amount of minerals, trace elements or free carbon dioxide gas beneficial to human health to distinguish it from ordinary groundwater. Drinking mineral water for a long time does have obvious nutritional and health care effects on human body. Due to the limitation of the standard of mineral water in China, it is difficult to distinguish high-quality mineral water from ordinary mineral water. It is generally believed in the world that high-quality mineral water should meet the characteristics of low salinity, low sodium, low temperature and small water cluster. However, at present, there are scaling phenomena in bottled mineral water in the market from time to time, and algae are serious, especially in the southern region. However, these problems can be solved in the production process and safe operation.

Purified water is water that meets the sanitary standard of drinking water, and is made by electrodialysis, ion exchange, reverse osmosis, distillation and other appropriate processing methods. It is sealed in a container and can be directly drunk without additives. Its advantages are safety, non-toxic, pollution-free, sanitary, and beneficial to human body. The disadvantage is that all beneficial substances in water are removed during the production process. Drinking purified water for a long time is easy to accelerate the loss of nutrients in the body, especially calcium, which is harmful to children's dental health, especially for the elderly, children, pregnant women and athletes. Now some provinces and cities in China have banned pure water from entering primary schools. Of course, the elements lacking in pure water can be taken from food, so there is no need to worry about nutrition. If economic conditions permit, it is not bad to buy real pure water, which is mainly used to replenish human moisture. However, because the current production of pure water is very irregular, it is harmful to the health if you buy unqualified products.

Mineral water is a kind of product between pure water and mineral water. Some people call it imitation mineral water, that is, some trace elements are artificially added to pure water to make up for the shortage of pure water. The difference between it and natural mineral water lies in its unstable trace element content, which is greatly influenced by human factors and is not as good as pure natural high-quality mineral water. Some trace elements can't be used in small quantities, nor can they be used in large quantities. Both large and small quantities will produce precipitation in blood and cells. Therefore, it is difficult to grasp the boundary between beneficial and harmful concentrations by artificial addition. Selenium, for example, can prevent and resist cancer in a proper concentration range (0.0 1-0.05mg/L) and enhance human immunity, and it will cause selenium poisoning if it exceeds 0.05mg/L.. In addition, at present, the country has not formulated the standard of mineral water, only the enterprise standard set by the enterprise is used as the quality control standard, or it is implemented with reference to the national mineral water standard.

The real mountain spring water must be the water that naturally gushes out through the special stratum structure. In foreign countries, it is stipulated that mountain spring water must indicate the water source, stratum structure and the exact mineral content in the water. The essence of real mountain spring water and high-quality mineral water is the same, both of which contain pure natural minerals, and long-term drinking is beneficial to human body, which is also the reason why mountain spring water is gradually favored in the market at present. However, at present, the country has not formulated the corresponding sanitary standards for mountain spring water, and it can only rely on enterprise standards or refer to national mineral water standards as its quality control standards, which has certain limitations.

Consumers should pay attention to the following issues when purchasing and drinking bottled drinking water:

1, choose the brand of reliable merchants, and pay attention to relevant test reports.

2. Check whether the identification of bottled water is complete and detailed, whether the packaging barrel is sealed, uniform in color and uniform in thickness, and whether there are sundries in the water body.

3. Choose mineral water with good taste and reasonable mineral content ratio.

4, bottled water should be drunk as soon as possible after opening, and it is best to drink it within one week.

5. Turn off the power of the water dispenser before going to bed to avoid repeated heating of the water in the hot water tank.

6, the water dispenser should be cleaned and disinfected regularly.