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目的了解洛阳市城市饮用水的卫生状况,为加强饮用水卫生监督管理、保障饮水安全提供科学依据。方法分别于2016年枯水期和丰水期采集城市6区和9个县(市)城区的水样,市政供水丰水期出厂水进行水质指标全分析,其余水样进行水质常规指标和氨氮指标检测。结果共监测常规分析和氨氮水样208份,合格率为77.40%;主要不合格指标有11项,合格率低于99%的指标由低到高依次为菌落总数、总大肠菌群、消毒剂指标、硝酸盐氮和耐热大肠菌群、总硬度、溶解性总固体、浑浊度和硫酸盐;监测全分析水样3份,均为不合格,不合格指标六氯丁二烯均超过标准值3.58倍。结论洛阳市饮用水不合格指标主要是微生物、消毒剂、硝酸盐氮、一般化学指标和六氯丁二烯。
Objective To understand the sanitary status of urban drinking water in Luoyang and to provide a scientific basis for strengthening the sanitary supervision and management of drinking water and ensuring the safety of drinking water. Methods Water samples of urban area 6 and 9 counties (cities) were collected during the dry season and wet season of 2016 respectively. The water quality indicators of the factory were collected during the municipal water supply period, and the remaining water samples were collected for routine testing of water quality and ammonia nitrogen . Results A total of 208 samples were routinely analyzed and ammonia-nitrogen water was used, with a pass rate of 77.40%. There were 11 major failure criteria, and the indicators with the pass rate of less than 99% were colony counts, total coliforms and disinfectants Indicators, nitrate nitrogen and heat-resistant coliform bacteria, total hardness, total dissolved solids, turbidity and sulfate; monitoring 3 samples of the total analysis of water samples were unqualified, 3.58 times the value. Conclusion The indicators of unqualified drinking water in Luoyang City are mainly microorganisms, disinfectants, nitrate nitrogen, general chemical indicators and hexachlorobutadiene.