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目的探讨广州市城市生活饮用水水质卫生状况,为改善生活饮用水水质,保障城市居民用水安全提供科学依据。方法对2012年广州市所辖的10个区、2个县级市的集中式供水单位出厂水、管网末梢水、二次供水监测结果进行统计分析。结果出厂水、管网末梢水、二次供水的合格率分别为100%、92.58%和88.98%,主要不合格指标为游离余氯和浑浊度。全年中第二季度的管网末梢水合格率、样品总合格率较低(83.33%、84.21%)。以西江水为水源的I、II、IV水厂的管网末梢水合格率、样品总合格率最高(100%、100%);以东江水为水源的V、VI水厂的合格率最低(81.25%、83.33%)。结论 2012年广州市城市生活饮用水卫生质量总体较好。第二季度合格率及V、VI水厂的合格率较低可能与广州市的雨季变迁规律和东江水系的水质状况有关。
Objective To explore the sanitary status of drinking water in urban areas of Guangzhou and provide scientific basis for improving the quality of drinking water and ensuring the safety of urban residents. Methods Statistical analysis was conducted on the monitoring results of factory water, peripheral pipe network water and secondary water supply in the centralized water supply units of 10 districts and 2 county-level cities under the jurisdiction of Guangzhou Municipality in 2012. Results The pass rates of factory water, peripheral pipe network and secondary water supply were 100%, 92.58% and 88.98% respectively. The main unqualified indicators were free residual chlorine and turbidity. In the second quarter of the year, the passing rate of the pipe network at the end of the pipeline was lower (83.33%, 84.21%). The passing rate of the pipe network of I, II and IV water plants with Xijiang River as the water source was the highest (100% and 100%), while the passing rate of the waterworks with Dongjiang water as the water source was the lowest (81.25 %, 83.33%). Conclusion In 2012, the health quality of urban drinking water in Guangzhou is generally good. The second quarter pass rate and the lower pass rates of V and VI water plants may be related to the changing laws of rainy season in Guangzhou and the water quality of the Dongjiang River system.