某住宅楼二次供水污染引发痢疾流行的调查

主要反映发生在广州某一住宅楼因二次供水受污染，引起痢疾流行，时间为１９９６年８月中旬至９月中旬，事件涉及６８户，共９６人发病，患病率为５９．６％，原因是由于二次供水系统的地下池（低位水池）溢流管设计不合理，与排污管相连接，引起污水倒流污染水体所致。此调查结果应引起有关方面重视，二次供水卫生管理是一个不可忽视的重要环节。

An Inverstigation and Report on Dysentery Epidemic Induced by Polluted Secondary Water Supply System in A High Dwelling in Guangzhou

This paper reported a dysentery epidemic induced by drinking water from polluted secondary water supply system in a high dwelling in Guangzhou during the period from the middle ten days of august to the middle ten days of september in 1996,which resulted in 68 infected families,96 cases and the prevalance of 59.6%.The investigation revealed the cause of pollution.In this secondary water supply system,overflow pipe of the under ground low cistern was unreasonablge designed and linked with sewage pipe,which resulted in the cistern water polluted by the backward flowing sewage.This accidence indicated that it was very important for the safty of drinking water among the residents to design scientifically and to strengthen the daily sanitory administration of secondary water supply system.