Drinking water has always been a concern for humans. In summer, due to the hot weather and excessive sweating, most people do not drink enough water. Therefore, avoid drinking only when you feel thirsty in summer; you should drink water frequently. A normal adult gets about 2500 ml of water per day from food and drink, and the amount of water intake should generally be balanced with the amount of water excreted by the body each day. For example, adults excrete an average of about 1500 ml of urine per day, about 800 ml through the skin and respiratory tract, and 100-200 ml through feces, totaling about 2500 ml. Therefore, normal people need to drink about 1500 ml of water per day in addition to eating, about 6-8 glasses of water, to meet the body's metabolic needs. Since water is so important to humans, the quality of water that people consume every day is crucial, as it is directly related to human health.

Currently, experts disagree on whether it is better to drink purified water or tap water. Some experts believe that drinking water is just to replenish water, and there is no need to consider nutritional issues. Other experts believe that tap water contains many trace elements and inorganic salts, which are beneficial to the human body. So what nutrients are actually in tap water? The zinc and iron content in 1000 ml of water is less than 0.2 mg, and adults need to supplement 10 mg-15 mg of zinc and 12 mg-18 mg of iron per day. The trace elements taken from water every day are less than 1 mg, which is insignificant compared to the trace elements needed by the human body. However, water contains higher levels of calcium and magnesium, which are still beneficial to the human body. True purified water is generally free of impurities, trace elements, inorganic salts, and pathogenic bacteria due to multi-layer filtration. It is safe, non-toxic, pollution-free, and hygienic, which is beneficial to the human body, and the missing elements can be obtained from food. Therefore, if economic conditions permit and you are buying real purified water, this is human progress. However, because the production of purified water is currently very unregulated, with inferior products mixed in, buying unqualified products can be harmful to your health.

Bottled water such as purified water and mineral water is very popular among modern people because it is easy to drink. When bottled water brings people trouble again, many people start boiling water to drink. Liu Yumin, director of the Environmental Health Institute of the Beijing Center for Disease Prevention and Control, told reporters that as long as it is qualified tap water, it is safest to drink after boiling. Experts remind that bottled water should be drunk fresh. Bottled water such as distilled water, mineral water and other purified water sold on the market is usually disinfected with ozone before being bottled. Therefore, freshly bottled water will contain a high concentration of ozone, and the strong oxidizing properties of ozone are very harmful to human health. Therefore, it is best to let fresh bottled water stand for 1-2 days before drinking it after the ozone has dissipated. In addition, bottled water is best consumed within one week after opening. Drink different water every week. Nowadays, many health experts advocate a new way of drinking water, that is, drinking different water every week, and people with different family structures or different age groups drink water with different mineral content. Experts pointed out that long-term single drinking of one kind of water can lead to dizziness, physical weakness, and weakness, and the content of limited trace elements in a mineral water is not enough to provide the human body with balanced trace elements. Experts advocate drinking direct drinking water for health and worry-free. Because direct drinking water can see the purity of the water.