江苏省典型地区水源水及饮用水中隐孢子虫和贾第鞭毛虫污染现状及分析

Investigation on Cryptosporidium and Giardia Contamination in Source Water and Drinking Water in Jiangsu Province

目的了解江苏省典型地区水源及饮用水中隐孢子虫和贾第鞭毛虫污染现状,为饮用水水质安全、科学供水提供依据。方法对调查对象进行卫生学调查,按照《生活饮用水标准检验方法》（GB/T 5750-2006）检测集中式供水水厂水源水、出厂水、末梢水中贾第鞭毛虫孢囊和隐孢子虫卵囊含量。结果所有222份样本中有7份阳性样本,其中隐孢子虫的检出率为0.5%（0.2个/10 L）,贾第鞭毛虫的检出率为2.7%（范围：0.5-2.3个/10 L）。结论本次研究＂两虫＂总体的检出率较低,今后应重点加强对农村小型集中式供水水厂监测工作,开展对易感人群感染状态的调查及风险评估工作。

Objectives To investigate the contamination of Cryptosporidium and Giardia in source water and drinking-water in Jiangsu Province to provide scientific bases for the safety of water quality. Methods Fiha-Max Xprss method was used for detecting Giardia cysts and Cryptosporidium oocysts in water; and the general information of the source water, treated water and peripheral water of central water supplies were surveyed. Results Seven samples were positive in 222 samples detected for Cryptosporidium and Giardia in water, and the positive rate were 0. 5% and 2.7% respectively. Conclusions The positive rate of Cryptosporidium and Giardia in water in this study was low in comparison with other studies. Protecting water sources and monitoring the treatment process in central water supplies should be strengthened and improved, especially for small central water supplies.