四川省市政末梢水水质监测

Municipal Tap Water in the Urban Drinking Water Monitoring Pilots in Sichuan

目的开展城市饮用水监测网络试点工作,掌握水质卫生状况,为提高饮水安全水平提供依据。方法 2009-07/2010-06对成都市、2个地级市、2个县级市的市政供水末梢水每月采样检测,对检测数据进行统计、评价和分析。结果2009-07/2010-06试点地区市政末梢水水质合格率为93.3%,各单项指标的合格率较高,多数指标合格率都在99%以上。一般化学指标的合格率高于感官性状指标、微生物指标、消毒剂指标;地级市水质合格率最高,省会城市次之,县级市水质合格率最低;2009年第3季度的水质合格率低于其余3个季度。差异均具有统计学意义。结论四川省监测点市政末梢水总体合格率较高,但多数监测项目均有不同程度的不合格情况,饮水安全仍存在一定程度的风险,应引起重视。

Objective To provide evidence for improving the safety of drinking water by carring out monitoring network pilot of urban drinking water and understanding the hygienic status of the water.Methods The samples of municipal tap water were collected in 5 different grade cities,the monitoring data of the samples were evaluated and analyzed.Results The qualified rate of municipal tap water in experimental areas was 93.3% from July,2009 to June,2010.The qualified rate of individual indices was high,most indices qualified rate was above 99%.The qualified rate of general chemical indices was higher than sensory characteristical indices,microbial indices and disinfectant indices.The tap water of prefectural-level city had the highest qualified rate,the provincial capital city was lower,the lowest qualified rate of tap water was in county-level cities.The qualified rate of tap water in the third quarter of 2009 was lower than other three quarters.All the differences had statistical significance.Conclusion The qualified rate of municipal tap water in experimental areas is high,but most of the indices have substandard conditions in different degree.There is a certain degree of risk in drinking water,that should be paid attention.