2. Epidemiological safety: there are no pathogenic microorganisms and parasite eggs, and there is no possibility of water-borne infectious diseases;
3. The chemical composition is harmless to human body: the chemical substance contained does not exceed the maximum allowable concentration and does not affect human health;
4. Adequate water sources and convenient access.
Personnel directly engaged in water supply work must establish health records and conduct regular physical examination at least once a year. If patients with infectious diseases or healthy bacteria substitutes are found, their jobs should be adjusted immediately. 2.7 Decentralized water supply should strengthen health management, establish necessary health system, take practical measures, and do regular maintenance and management.
Extended data:
Good sensory characteristics: the quality of drinking water should be colorless, transparent, odorless and tasteless, and must not contain any substances visible to the naked eye; The drinker is happy to use it. Epidemiological safety: drinking water must not contain pathogenic microorganisms and parasitic eggs, so as to avoid the occurrence and prevalence of intestinal infectious diseases and parasitic diseases caused by unclean drinking water.
Chemical composition is harmless to human body: water should contain proper substances necessary for human health, and the content of chemicals harmful to human body should be controlled within the safety threshold. Sufficient water: sufficient water, easy to use.
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