Abstract:
Objectives Based on the result of an external quality control assessment to understand the actual detection ability and existing problems in the rural drinking water quality laboratory of the Center for Disease Control and Prevention in 39 districts and counties of Chongqing, and put forward improvement measures.
Methods Using a robust statistical method to evaluate the laboratory testing capability:using Z ≤ 2 as satisfactory; 2 < Z < 3 as questionable; Z ≥ 3 as dissatisfactory.
Results The participants from 27 district-level and 12 county-level Center for Disease Control and Prevention participated in the external quality control assessment on water quality. The satisfaction rate on the assessment of fluoride, chloride and lead were 97.4%, 92.3% and 84.8%, respectively.
Conclusions All the Center for Disease Control and Prevention of Chongqing, which participated in the evaluation of laboratory testing ability, had the ability to detect chlorides, fluorine and lead in water samples. The performance of instruments and the professional quality of inspectors are critical factors to ensure the detection ability of testing rural water quality.