People drink water every day, but few people know what healthy and safe drinking water is. The irreplaceability of water resources directly affects the survival and development of mankind. Among them, drinking water is more related to the survival of human beings. Medical research shows that in extreme cases, deaths caused by lack of water are much higher than deaths caused by lack of food.
About 70% of the earth's surface area is covered by water. Water also exists on land that accounts for about 30% of the earth's surface area, but only 2.53% of the water is fresh water for human use. Due to technical and economic constraints, seawater, deep groundwater, and solid fresh water from ice and snow have rarely been used directly so far. Lakes, rivers and shallow underground freshwater resources that are easier to develop and utilize only account for 0.34% of the total freshwater reserves, which is less than one ten thousandth of the total global water reserves.
What is healthy and safe drinking water
At this World Water Conference, the complete scientific concept of "healthy water" put forward by the World Health Organization has attracted widespread attention. The concept is that drinking water should meet the following progressive requirements: 1. No pollution, free of pathogenic bacteria, heavy metals and harmful chemicals; 2. Contain natural minerals and trace elements required by the human body; 3. Vitality No degradation, weak alkaline, strong activity, etc.
Relevant experts believe that the drinking water standards currently adopted by China are formulated based on the situation more than 20 years ago, and are no longer in line with the status quo of drinking water in my country. The new national drinking water standard will be promulgated and implemented in the near future. The water quality inspection items of the new standard have been increased from the original 35 items to 107 items.
Healthy water must be natural and good water from the source, not tap water; the production process must be filled with water sources to ensure water quality, and generally obtain deep water with fairly stable water quality. Experts pointed out that in order to comply with the concept of healthy water, we must start with the protection of existing water sources, and to protect water sources, we must increase pollution control and strictly manage the drinking water production process to avoid secondary pollution.