Hydrogeochemical investigation of groundwater in shallow coastal aquifer of Khulna District, Bangladesh

Abstract

Groundwater acts as a lifeline in the coastal regions to meet out the domestic, drinking, irrigational and industrial needs. To investigate the hydrogeochemical characteristics of groundwater and its suitability, twenty samples were collected from the shallow tubewells of study area having screen depth 21-54 m. The water quality assessment has been carried out by evaluating the physicochemical parameters such as temperature, pH, EC, TDS and major ions i.e., Na ? , K ? , Ca 2? , Mg 2? , Cl -, SO 4 2-, NO 3 -, HCO 3 -. Results found that, the water is slightly alkaline and brackish in nature. The trends of cations and anions are Na ? [ Ca 2? [ Mg 2? [ K ? and Cl -[ HCO 3