Groundwater from different stations of Satkhira Municipality has been analyzed for assessing the chemistry, source rock evolution and quality. The parameter analyzed are pH, TDS, EC, Na+, K+, Ca2+, Mg2+, Cl-, HCO3-, SO42-, PO43-, H4SiO42-, F-, I- and NO2-N. The Na+/ (Na++Ca2+) weight ratio against TDS shows that the waters are derived from Rock weathering however few samples suggests dominance of Evaporation crystallization process. Source rock deduction suggests that the aquifer is mostly carbonate weathering where also cation exchange occurred; Piper diagram suggests that...