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近廿余年来,某市集中式供水共发生21起饮用水污染事件。17起为生物型污染,均引起肠道传染病的暴发,发病人数9075人,患病率为9.78％。4起为工业有害物质对饮用水污染。饮用水污染主要原因,16起为供水管网、贮水设备设置不合理,管理不善,造成中途污染;4起为自备水源卫生防护差,卫生管理不好造成;有1起为工业废水直接进入地下水污染了自备水源。 肠道传染病的致病因子,伤寒、付伤寒、沙门氏菌和痢疾杆菌引起发病各6起,轮状病毒引起感染性腹泻3起,有2起在病人粪便中未检出肠道致病菌。
Nearly 20 years, a city centralized water supply a total of 21 drinking water pollution incidents. 17 biotypes of pollution, have caused an outbreak of intestinal infectious diseases, the incidence of 9075 people, the prevalence was 9.78%. 4 for industrial hazardous substances on drinking water pollution. Drinking water pollution is the main reason, 16 for the water supply network, water storage equipment set unreasonable, poor management, resulting in halfway pollution; 4 for poor self-protection of water supply and hygiene, health management is not good; 1 for industrial wastewater directly Entering groundwater pollutes its own source of water. Pathogenic factors of enteric infectious diseases, typhoid fever, typhoid fever, Salmonella and Shigella caused six cases each, rotavirus caused infectious diarrhea three cases, two cases of intestinal pathogens were not detected in the patient’s stool.