Thai Binh is a coastal province belongs to Red River Delta, which is considered potential and advantages areas for production, especially agriculture. However, due to the close location to beach so groundwater in Thai Binh has complicated hydro-geochemical
which creates difficulties for exploration and water usage of citizens within province. In recent years, although the development of economy has brought advantages to the province, the environmental pressures have arisen, including groundwater environment. Salinity and contamination phenomena in different water layer have been worsen by the time
also the reduction of water level in borehole has been spread within the province. In various places within the province, the groundwater has been contaminated due to organic chemistry elements (COD
NH4
PO4
Fe and Mn). In particular, the water exploitation and aquaculture activities have caused the salinity problem.