Decision No. 725/QD-TTg approving Hanoi Capital's water drainage master plan through 2030 with a vision toward 2050.

This Decision approves Hanoi Capital's water drainage master plan through 2030 with a vision toward 2050, with the following research areas: The whole water drainage system within the administrative boundary of Hanoi Capital and the expanded areas belonging to the provinces of Hoa Binh, Ha Nam, Bae Ninh and Hung Yen in the same river basin. Scope of planning for rainwater: The entire administrative land area of Hanoi city's urban center and suburban areas with direct impacts on the rainwater drainage system. For wastewater: Hanoi city's urban center and satellite towns. To conform with the other related master plans of Hanoi Capital through 2030 with a vision toward 2050; To take into account the impacts of climate change, directing toward stable and sustainable development, based on the building of synchronous rainwater and wastewater drainage systems from collection to treatment for every urban basin to suit socio-economic development conditions. For rainwater drainage planning, to apply the technical model of sustainable water drainage, enhancing the rainwater absorption and storage capability, contributing to the minimization and incremental elimination of urban flooding in the central Hanoi Capital and other urban centers within the scope of planning. To concentrate on the concentrated wastewater drainage and treatment systems for urban centers (especially the central one); to orientate the water drainage for small urban centers, outlying and suburban areas, industrial parks and hospitals, with a view to improving hygiene and protecting the environment, meeting the socio-economic development requirements. To encourage various economic sectors to invest in the construction of Hanoi Capital's water drainage systems.