Health inspection and monitoring results analysis on secondary water supply in Shanghai / 上海预防医学

ABSTRACT

[Objective] To investigate the quality of secondary water supply in Shanghai , in order to provide the basis for efficient management measures . [ Methods] Secondary water supply data were collected and analyzed from Shanghai drinking water health inspection and monitoring information system . [ Results] Cleaning and disinfection of secondary water supply facilities and water quality self -check and others were found to be low in pass rate .The drinking water quality of secondary water supply was lower . The main unqualified monitoring indexes were oxygen consumption , total number of bacteria and residual chlorine. [ Conclusion] Several problems exist in secondary water supply .By using Shanghai drinking water health inspection and monitoring information system , we can take effective measures to achieve sec-ondary water supply scientific supervision , then ensuring water safety .