Drinking Water Quality and Intestinal Infectious Diseases in Urban and Rural Boarding Schools in Guangxi / 环境与健康杂志

ABSTRACT

Objective To know the drinking water safety for students and teachers in urban and rural boarding schools in Guangxi, further to prevent and control the water-borne diseases. Methods The random stratified cluster sampling method was used to select 100 schools in 10 counties of Nanning, Liuzhou and Guilin cities. The drinking water samples were collected and tested according to Sanitary Standard for Drinking Water Quality2001. The epidemic situation of intestinal infectious diseases was investigated. Results The total qualified rate of drinking water quality in 100 boarding schools of 10 counties cities was only 27.00%, as for the water supply provided for themselves with disinfection, the qualified rate was 47.37%, without disinfection, it was 16.95%. 24 outbreak events of intestinal infectious diseases occured in 100 boarding schools in 2000-2005, 2 339 of school teachers and students were attacked, including 13 outbreak events of typhoid and paratyphoid 54.17% with 1 280 cases 54.72%, 6 outbreak events of bacterial dysentery25.00% with 829 cases35.44%, 4 outbreak events of infectious diarrhea 16.67% with 225 cases 9.62%, 1 outbreak of hepatitis A 4.17% with 5 cases 0.21%. These 24 epidemic events were caused by drinking water, the morbidity was higher in the schools where there was no disinfection facility in water supply. Conclusion Some of water supply for some urban and rural boarding schools have been polluted with bacteria in Guangxi, so drinking water disinfection should be done to ensure water safety and prevent the related diseases in these schools.