摘要：Hydrogeochemical investigation was attempted to find the dominant processes in influencing the groundwater quality. This was evaluated for its suitability for drinking and irrigation purposes by estimating pH, EC, TDS, hardness and alkalinity besides major cations Na+, K+, Ca2+, Mg2+ and anions HCO3', CO32', Cl', SO42' and F_. Based on the analytical results, chemical indices like, SAR, cation ratio of structural stability (CROSS), percent Na, Permeability index, residual sodium carbonate (RSC), Kelly’s ratio, magnesium adsorption ratio and non carbonate hardness (NCH) were calculated. Permeability indices suggest suitability of groundwater for irrigation. This study indicates that the groundwater in Gudur area is fairly suitable for irrigation and drinking purposes.
