Drinking Water Intake of Adult Residents in Chengguan District of Lanzhou

Objectives To acquire the drinking water intake of adult residents in Chengguan district, and to provide the scientific basis for health risk assessment on drinking water intake of residents in Chengguan district of Lanzhou.

Methods A total of 260 healthy permanent residents over 18 years old were selected by cluster random sampling from Chengguan district in Lanzhou in July and December of 2017. The information on drinking water intake of residents was investigated by using quantitative measurement and questionnaire survey. Wilcoxon rank sum test and Kruskal-Wallis rank sum test were used for statistical analysis of drinking water intake.

Results The median of total drinking water intake, direct drinking water intake, and indirect drinking water intake of residents in Chengguan district were 2 043, 1 600, and 395 mL/d, respectively. The total drinking water intake, direct drinking water intake, and indirect drinking water intake of males (2 277, 1 800, and 432 mL/d) were all higher than that of females (1 973, 1 500, and 354 mL/d) (P < 0.05); and the total drinking water intake and direct drinking water intake of males in summer and winter were all higher than that of females (P < 0.05). The total drinking water intake could be ranked from the highest to the lowest as 2 150 mL/d (18~44 years old), 2 042 mL/d (45~64 years old), and 1 878 mL/d (over 65 years old) (P < 0.05). However, there was no statistically significant difference for direct and indirect drinking water intake of different age groups.

Conclusions This investigation acquired information of drinking water intake of residents in Chengguan district of Lanzhou and provided basic reference for carrying out health risk assessment of drinking water in local areas.