1983年7月11日至8月31日,地建二队发生腹泻暴发流行,调查证实由于化粪池污水污染井水所致。 地建二队自备机井供全队职工、家属用水。距机井3.5米处违章建一化粪池。 全队职工287人,发病161人(56.1％)。饮用机井水者263人,发病161人(61.2％),不饮用机井水的24人,无一发病。 From July 11, 1983 to August 31, 1983, a diarrhea outbreak was reported in the second team from the construction of the second team. Investigation confirmed that the well water was contaminated by septic tank wastewater. Second team built to build wells for all team workers, their families water. 3.5 meters away from the well illegally built a septic tank. The team of 287 employees, the incidence of 161 people (56.1%). There were 263 drinking water wells, 161 people (61.2%), 24 people who did not drink machine water, none of them had any disease.