在水质污染较严重的区域，必须针对实际情况，采取污水截留，严格控制污染源

在水质污染较严重的区域，必须针对实际情况，采取污水截留，严格控制污染源，减少对附近水质的污染。对于生活污水，要保障生活污水收集管网的功能完善，若生活污水收集管网损坏，应加紧修复，确保排放的污水能及时纳入污水管线内；对于生活垃圾，应提高居民的整体素质，加强环境保护意识，规范生活垃圾集中处理，整改人们将垃圾直接倾倒河内的陋习。通过控制排污、水面保洁等措施，削减污染物纳入河道的总量，有效改善水质恶化现象，从根本上提高水资源的承载能力全面改善水体质量。

In areas with serious water pollution, sewage interception must be adopted according to the actual situation to strictly control the pollution source and reduce the pollution to the nearby water quality. For domestic sewage, the function of domestic sewage collection pipe network shall be guaranteed to be perfect. If the domestic sewage collection pipe network is damaged, repair shall be stepped up to ensure that the discharged sewage can be incorporated into the sewage pipeline in time; For domestic waste, we should improve the overall quality of residents, strengthen the awareness of environmental protection, standardize the centralized treatment of domestic waste, and rectify people's bad habit of dumping waste directly into Hanoi. Through measures such as pollution control and water surface cleaning, reduce the total amount of pollutants into the river, effectively improve the deterioration of water quality, fundamentally improve the carrying capacity of water resources and comprehensively improve the water quality.

In areas with serious water pollution, sewage interception must be taken according to the actual situation, pollution sources should be strictly controlled, and pollution to nearby water quality should be reduced. For domestic sewage, it is necessary to ensure the perfect function of the domestic sewage collection pipe network. If the domestic sewage collection pipe network is damaged, it should be repaired urgently to ensure that the discharged sewage can be included in the sewage pipeline in time; For domestic garbage, we should improve the overall quality of residents, strengthen the awareness of environmental protection, standardize the centralized treatment of domestic garbage, and rectify the bad habit of people dumping garbage directly into Hanoi. By controlling sewage discharge, cleaning water surface and other measures, we can reduce the total amount of pollutants into rivers, effectively improve the deterioration of water quality, fundamentally improve the carrying capacity of water resources and comprehensively improve water quality.