Analysis on Quality of Drinking Water in Urumqi in 2011-2013

Objectives To understand the hygienic status of drinking water in Urumqi city.

Methods Drinking water samples were collected, detected and evaluated in 2011-2013 by the national standard method.

Results A total of 561 water samples were monitored, and 417 samples were qualified with an overall qualified rate of 74.3%.The qualified rate for finished water from municipal water plants was 60.4%, for terminal tap water was 80.1%, and for secondary supplied water was 93.3%.The qualified rate of water from smaller rural centralized water supply was 19.3%.The unqualified indexes were free residual chlorine, turbidity, the counts of total bacteria and total coliform.The qualified rate for residual chlorine was only 79.7%, the lowest among the tested indexes.

Conclusionds Part of indexes for drinking water in Urumqi city could not comply with the national standard.It is important to enhance the inspection and administration of drinking water to improve the quality of free residual chlorine and other indicators, so as to guarantee the safety of drinking water in the city.