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目的了解六安市集中式供水单位生活饮用水水质卫生质量的动态变化,为保证供水质量提供依据。方法2000~2004年对六安市集中式供水单位水源水、出厂水和管网末梢水进行连续监测,主要监测项目为:色度、浑浊度、细菌总数、总大肠菌群、粪大肠菌群、铁、锰、游离余氯8项,监测结果依据《生活饮用水水质卫生规范》进行评价。结果共监测水源水70份,合格22份,总合格率为31.1%,2000~2004年各年度的水源水监测合格率分别为49.4%、12.0%、50.1%、19.6%和12.3%;共监测出厂水70份,合格率为100%;共监测420份管网末梢水,合格率为99.8%。结论六安市水源水合格率较低,集中式供水单位的出厂水和管网末梢水合格率较高。
Objective To understand the dynamic changes of sanitary quality of drinking water in centralized water supply units in Lu’an City, and provide the basis for ensuring the quality of water supply. Methods From 2000 to 2004, continuous monitoring was carried out on the water source water, factory water and the peripheral water in the centralized water supply units of Lu’an City. The main monitoring items are: color, turbidity, total bacteria, total coliforms, fecal coliform , Iron, manganese, free residual chlorine 8, the monitoring results based on “drinking water quality health norms” for evaluation. Results A total of 70 water sources were monitored and 22 were qualified. The total qualified rate was 31.1%. The qualified rates of water source monitoring in each year from 2000 to 2004 were 49.4%, 12.0%, 50.1%, 19.6% and 12.3% respectively. Factory water 70, with a pass rate of 100%; a total of 420 pipe network monitoring of water, with a pass rate of 99.8%. Conclusion The qualified rate of water source water in Lu’an City is relatively low, and the qualified rate of outlet water of the factory water and pipe network of centralized water supply units is higher.