At the World Water Congress, the complete scientific concept of "healthy water" put forward by the World Health Organization attracted wide attention. The idea is that drinking water should meet the following progressive requirements: ① No pollution, no pathogenic bacteria, heavy metals and harmful chemicals. ② It contains natural minerals and trace elements needed by human body. ③ The activity does not degenerate, showing weak alkalinity and strong activity.
China's "Hygienic Standard for Drinking Water" is a legal hygienic standard approved by the relevant state departments and issued in a certain form, aiming at protecting people's health and ensuring the quality of human life, and legally stipulating the values of various factors (physical, chemical and biological) related to people's health in drinking water, as well as the provisions of relevant codes of conduct to achieve this value. The new national standard for drinking water was implemented on July 1 2007. In the new standard, the number of water quality inspection projects increased from 35 to 107. The water quality standards and hygiene requirements of drinking water must meet three basic requirements:
1. In order to prevent the occurrence and spread of water-borne infectious diseases, drinking water is required to contain no pathogenic microorganisms.
2. The chemicals and radioactive substances contained in the water shall not be harmful to human health, and it is required that the chemicals and radioactive substances in the water shall not cause acute and chronic poisoning and potential long-term harm (carcinogenesis, teratogenicity and mutagenicity).
3. The sensory characteristics of water are people's intuitive feelings about drinking water and an important basis for evaluating water quality. Drinking water must ensure good senses and be enjoyed by the people.