5·12汶川地震发生后,供水设施损毁严重无法使用,饮用水安全卫生问题同时面临生物、化学污染,化学物质泄漏等次生环境污染事件的威胁,直接关系到群众和救援人员身体健康,是确保大灾之后无大疫的关键。我们实地调查和详细了解、掌握即时资料,针对当地实际情况,根据不同阶段的卫 After the May 12 Wenchuan earthquake, the water supply facilities were seriously damaged and could not be used. The safety and health problems of drinking water are also threatened by secondary environmental pollution incidents such as biological, chemical and chemical leakage, which are directly related to the health of the masses and rescue workers. No major epidemic to ensure the aftermath of the disaster. Our field investigation and detailed understanding, grasp of real-time information, according to the local actual situation, according to different stages of Wei