饮用未经充分处理的水是发展中国家引起疾病和死亡的主要原因之一。为了向这些公众提供安全的饮用水,应该采用多屏障的方法来阻止病源微生物的传播。据估计每天大约有五万人由于水传播的疾病而死亡,而且被感染的人数更多。水源保护应该包括正确的卫生习惯,地面水的过滤和有效的消毒。在很多事例中,由于某些基本原理和要求被忽视的现实,水处理和消毒对于产生微 Drinking untreated water is one of the major causes of illness and death in developing countries. In order to provide these people with safe drinking water, multi-barrier methods should be used to stop the spread of pathogenic microorganisms. It is estimated that approximately 50,000 people die each day due to water-borne diseases, and more people are infected. Water protection should include proper hygiene practices, groundwater filtration and effective disinfection. In many instances, water treatment and disinfection are used to generate micro