Abstract:
Objective To understand the quality of drinking water in Dalian by analyzing the monitoring results of drinking water from 2009 to 2011．
Methods Monitoring data of Dalian drinking water from 2009 to 2011 were obtained from Dalian Center for Disease Control and Prevention. According to the Standard Examination Methods for Drinking Water (GB 5750-2006) and the Standards for Drinking Water Quality (GB 5749-2006), the samples of drinking water were examined and evaluated.
Results Of the 1 839 drinking water samples tested, the qualified rate was 91.41% (1 681). The main unqualified items were turbidity, total coliforms, total bacterial count, heat-resistant coliforms, residual chlorine, iron, and nitrate. The qualified rates of the drinking water samples increased by years, those of municipal water supply were high, and those of selfprovided water and secondary water were low.
Conclusion The quality of drinking water in Dalian is generally at a high level, except for self-provided water and secondary water, which requires strengthened monitoring and supervision.
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