Recently, extreme rainfall has occurred in North China, Northeast China, and other regions, causing floods and geological disasters. The National Bureau of Disease Control and Prevention has issued the "Guidelines for Environmental Sanitation Disposal and Preventive Disinfection in Flood stricken Areas (2023 Edition)", providing guidance for effective public health disaster prevention work in various regions. How to ensure the safety of drinking water for the people? How to clean your home environment after a flood? The National Bureau of Disease Control and Prevention recently organized experts to interview reporters from Xinhua Vision to interpret relevant requirements and standards. Drawing: Hu Ge, Lin Qiujin Water Use: Priority should be given to bottled water for household use. Water containers and pipelines should be thoroughly disinfected. According to information released by the China Center for Disease Control and Prevention's Health Emergency Center, the probability of public health disasters is likely to increase after floods occur. Floods will cause a large amount of human and animal feces, garbage, and animal carcasses to wash into the water, which may cause contamination of pathogenic microorganisms and increase the risk of outbreaks of water-borne and foodborne diseases. The guidelines are clear, and bottled water should be prioritized for household use. If there is no bottled water, it should be boiled before drinking. Water storage and intake containers, as well as water pipelines, should be thoroughly flushed and disinfected before use or re use. The reporter learned that the health departments and disease control institutions in areas severely damaged by floods have organized health supervision teams at all levels to carry out full coverage inspections of contaminated drinking water in the disaster areas. The water conservancy department will accelerate the repair of damaged water supply facilities, strengthen monitoring of key risk water quality indicators, and provide temporary emergency water supply support. As of the 5th, Hebei Province has dispatched a total of 111 health supervision teams of over 450 people to densely populated areas such as disaster relief sites, schools, and nursing homes, to check the hygiene status of drainage wells, toilets, and garbage sites one by one, to prevent water source pollution and ensure drinking water safety. People in disaster areas should pay attention not to drink raw water, water from unknown or contaminated sources, and not to rinse or wash vegetables with water from unknown or contaminated sources. "Pan Lijun, director of the Environmental Health Protection Department of the Environmental and Health Related Product Safety Institute of the China Center for Disease Control and Prevention, said that if conditions permit, it is recommended that people prioritize drinking bottled water. If bottled water is not available, it should be fully boiled before drinking. In terms of non direct drinking domestic water, Shen Jin, director of the Disinfection Center of the Environmental and Health Related Product Safety Institute of the China Center for Disease Control and Prevention, reminds that if households use tank (bucket) water or hand well water, they must disinfect the water properly. Shen Jin said that if the retrieved water is relatively clear, it can be directly disinfected and used. If it is very cloudy, it can be naturally clarified or coagulated and precipitated with alum before disinfection. The commonly used disinfectants are bleach tablets or chlorine containing effervescent tablets, administered at a chlorine dosage of 4-8 milligrams per liter. Cleaning up: Timely clean up sludge and garbage and feces, do not consume food soaked in floods, and formulate targeted work plans based on the disaster situation and the risk of local infectious diseases. Timely carry out environmental sanitation cleaning and disinfection work. Mud, animal carcasses, garbage, and feces should be cleaned up in a timely manner, and harmless treatment should be carried out. The large amount of garbage generated during cleaning should be promptly cleared and transported, and dumping into the river is strictly prohibited. Pan Lijun stated that the sludge and accumulated water left after floods can easily lead to the breeding of vector organisms. Affected people should promptly remove mud and water from their courtyards and homes. If there is a large accumulation of water in the basement,