周潇潇, 王金富, 方家阳, 梁鸿镖. 台州市2012年城乡居民生活饮用水监测结果分析[J]. 环境与职业医学, 2013, 30(12): 917-920.
引用本文: 周潇潇, 王金富, 方家阳, 梁鸿镖. 台州市2012年城乡居民生活饮用水监测结果分析[J]. 环境与职业医学, 2013, 30(12): 917-920.
ZHOU Xiao-xiao , WANG Jin-fu , FANG Jia-yang , LIANG Hong-biao . Analysis on Results of Urban and Rural Residential Drinking Water Monitoring in Taizhou City, 2012[J]. Journal of Environmental and Occupational Medicine, 2013, 30(12): 917-920.
Citation: ZHOU Xiao-xiao , WANG Jin-fu , FANG Jia-yang , LIANG Hong-biao . Analysis on Results of Urban and Rural Residential Drinking Water Monitoring in Taizhou City, 2012[J]. Journal of Environmental and Occupational Medicine, 2013, 30(12): 917-920.

台州市2012年城乡居民生活饮用水监测结果分析

Analysis on Results of Urban and Rural Residential Drinking Water Monitoring in Taizhou City, 2012

  • 摘要: 目的 了解台州市城乡居民生活饮用水卫生状况,为保障饮用水安全提供支持。

    方法 将该市所有县级及以上集中式供水单位列为调查监测对象,于2012年3月、5月、8月、10月各监测1次;随机抽取每个县(市、区)30%的村镇集中式供水单位列为调查监测对象,于2012年5月、8月(分别代表上、下半年)各监测1次;采样及样品检验按照国家标准《生活饮用水标准检验方法》 (GB/T 5750-2006)相关要求进行;监测结果按《生活饮用水卫生标准》(GB 5749-2006)进行评价。

    结果 台州市共抽取集中式供水单位201个,覆盖4175887人,占全市人口的71.2%。共监测水样1968份,合格1256份,总合格率为63.8%。其中大、小型供水单位水质合格率分别为89.4%和43.2%;县级及以上供水单位的水质合格率为95.9%,乡镇级为80.8%,村级为40.8%;县级及以上供水单位第一、二、三、四季度水质合格率分别为99.1%、99.2%、94.5%、91.9%;村镇集中式供水单位水质合格率上、下半年分别为61.0%、47.7%。从不同采样环节看,出厂水的合格率为41.7%,末梢水为75.4%;其中游离氯指标出厂水合格率为46.4%,末梢水为85.2%。合格率较低的指标主要集中在微生物和消毒剂两类。此外,采用完全处理方式的供水单位中,大型者占65.2%,小型者为7.7%;县级及以上占90.0%,乡镇级占56.8%,村级仅占7.8%。

    结论 本次监测结果具有较好代表性;台州市水质合格率总体偏低;村级、小型供水单位水质合格率较低,水处理方式需进一步完善。

     

    Abstract: Objective To understand urban and rural residential drinking water quality in Taizhou city, and provide supports for drinking water safety.

    Methods Water samples from all centralized water supply plants at county level and above were monitored in March, May, August, and October 2012, and 30% of the centralized water supply plants at village and town level were randomly selected to be monitored in May and August 2012. The water samples were collected and tested as well as evaluated following the related national standards (GB/T 5750-2006 & GB 5749-2006).

    Results A total of 201 centralized water supply plants were enrolled, covering 4 175 887 residents that accounted for 71.2% of the city population. Altogether 1968 water samples were tested, in which 1 256 samples were qualified, and the total qualified rate was 63.8%. The qualified rates of the large and small water supply plants were 89.4% and 43.2% respectively. The qualified rates were 95.9%, 80.8%, and 40.8% for county-level plants, town-level plants, and village-level plants, respectively. The quarterly qualified rate of the county-level plants were 99.1%, 99.2%, 94.5%, and 91.9% for consecutive four quarters in a year respectively. The qualified rates of the village-and town-level centralized water supply units were 61% in the first half of the year and 47.7% in the second half of the year. Regarding the water treatment procedures, the qualified rates were 41.7% for the finished water samples and 75.4% for the tap water samples. The indices with lower qualified rate were microbial and disinfectant. The categories of the water supply plants using complete treatment were 65.2% in large size, 7.7% in small size; 90.0% on county-level, 56.8% on town-level, and only 7.8% on village-level.

    Conclusion The representative results show that the qualified rates of drinking water in the selected city are on the low side in general. The treatment techniques applied by the small and village-level water supply plants require to be improved, which is suggested by low qualified rates of various drinking water indices.

     

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