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目的目的了解2014年佛山市顺德区二次供水的卫生状况,探索二次供水的卫生管理模式,确保二次供水的供水安全。方法按GB 5750-2006《生活饮用水标准检验方法》对顺德区各二次供水单位的水质进行随机抽样检测,并依据GB 17051-1997《二次供水设施卫生规范》进行评价。结果 2014年共抽检120份二次供水,均检测21个项目,合格率为90.83%。主要不合格项目为游离余氯、浑浊度、氨氮及细菌总数,合格率分别为96.67%、98.33%、95.00%、95.83%。城区二次供水水质合格率为98.08%(51/52),优于乡镇二次供水水质合格率85.29%(58/68)(P<0.05);酒店二次供水水质合格率为98.21%(55/56),优于居民小区二次供水85.29%(54/64)(P<0.05)。结论顺德区二次供水的总体卫生状况良好,但二次供水的卫生管理仍有待进一步落实和完善,尤其要加强对乡镇和居民小区二次供水的卫生监管。
Objective To understand the health status of secondary water supply in Shunde District of Foshan City in 2014 and to explore the health management mode of secondary water supply to ensure the water supply safety of secondary water supply. Methods According to GB 5750-2006 Standard Test Method of Domestic Drinking Water, the water quality of each secondary water supply unit in Shunde District was randomly sampled and tested, and evaluated according to GB 17051-1997 Hygienic Standard for Secondary Water Supply Facilities. Results A total of 120 secondary water supply tests were conducted in 2014, of which 21 projects were tested with a pass rate of 90.83%. The main unqualified items were free residual chlorine, turbidity, ammonia nitrogen and the total number of bacteria. The pass rates were 96.67%, 98.33%, 95.00% and 95.83% respectively. The passing rate of secondary water supply in urban area was 98.08% (51/52), which was better than that of township secondary water supply (85.29% (58/68)) (P <0.05). The passing rate of secondary water supply was 98.21% (55 / 56), which is better than 85.29% (54/64) of secondary water supply in residential areas (P <0.05). Conclusion The overall sanitary condition of secondary water supply in Shunde District is good, but the hygiene management of secondary water supply needs to be further implemented and perfected. In particular, it is necessary to strengthen the hygiene supervision on the secondary water supply in towns and residential areas.