Current Situation and Influencing Factors of Drinking Water in Xinjiang in 2017

Objectives To investigate the current situation of drinking water in 2017 and analyze the influencing factors of water quality.

Methods A total of 6 160 water samples collected from monitoring stations in Xinjiang were analyzed according to the Standard Examination Method for Drinking Water (GB 5750-2006), detected and evaluated according to the Standard for Drinking Water Quality (GB 5749-2006). If any one of the indicators did not reach the standard, the water sample would be judged as unqualified. The test of χ² and Logistic regression were used for univariate and multivariate analysis.

Results The total qualified rate of drinking water samples was 62.4%. The result of Logistic regression analysis showed that the water samples collected from northern Xinjiang(OR=0.523, 95% CI:0.466~0.588) or eastern Xinjiang(OR=0.552, 95%CI:0.442~0.690), underground water(OR=0.445, 95% CI:0.393~0.505) and completely treated water(OR=0.763, 95%CI:0.679~0.859) were protective factors; but from rural area(OR=1.522, 95%CI:1.343~1.724) was a risk factor.

Conclusions The quality of drinking water was significantly better after implementing water improvement projects and disease prevention works, however the quality of drinking water was still low. The forms of water source, types of water supply and geographical environment are important factors affecting the quality of drinking water in Xinjiang.