The coastal area of the Red River Delta is located downstream of the Red River - Thai Binh system, due to its downstream location, the surface water source is often in short supply, especially in the drought years. Population growth, the process of urbanization and industrialization in recent years have strongly impacted the need for large water use, leading to a decline in surface water resources. The main reason is due to the increase of industrial parks, leading to an increase in wastewater; overuse of fertilizers and chemicals in agricultural production ... causing pollution to the water environment. Moreover, the phenomenon of saline intrusion in recent years has become more severe due to the influence of various causes and increasingly affecting the socio-economic development process in the region, especially the coastal provinces. The content of the article is to assess the evolution of surface water in the main river system and propose solutions to reduce surface water pollution in the coastal areas of the Red River Delta. Thereby, it is the basis for proposing solutions to manage and protect surface water sources on the main rivers of coastal provinces in the Red River Delta.