Objective To master development trend of drinking-water-borne endemic arsenism in Shanxi Privince, and to provide a scientific basis for further prevention and control of the disease. Methods In accordance with the requirements of national Surveillance Scheme of Drinking-Water-Borne Endemic Arsenism and Shanxi Provincial Surveillance Scheme of Drinking-Water-Borne Endemic Arsenism, 14 villages in 5 epidemic counties were chosen as monitoring sites. Water improvement and operation of the engineering of water...