Hydrochemical characteristics and nitrate health risk assessment of groundwater through seasonal variations from an intensive agricultural region of upper Krishna River basin, Telangana, India.

Seasonal variations in hydrogeochemical characteristics of groundwater were assessed from an intensive agricultural region to identify contaminants of concern that are a potential risk to human health. A total of 116 groundwater samples were collected grid-wise from an intensive agricultural region of confined Wanaparthy watershed to evaluate seasonal variations in hydrogeochemical processes of dissolved ions, nitrate health risk assessment and water quality during pre-monsoon (PRM) and post-monsoon (POM) seasons. The major ions concentration found in ascending order as PRM: F < NO< SO< HCO< Cl and K< Mg< Ca< Na while POM: F < NO< SO< Cl< HCO and K< Ca< Mg< Na respectively Piper diagram for water-types shows PRM; Na-Cl type (70.

Water quality index and GIS-based technique for assessment of groundwater quality in Wanaparthy watershed, Telangana, India.

A comprehensive study of 58 groundwater samples collected in the virgin area of Wanaparthy watershed (1600 km), Telangana, India, to assess the hydrochemistry, quality, water types and potability using hydrogeochemical characterization, WQI and GIS technique. Major ions concentration of Na, K, Ca, Mg, Cl, F, NO and SO in groundwater were analysed using ion chromatography (IC). Physicochemical values of the potential of hydrogen (pH), total dissolved solids (TDS) and electrical conductivity (EC) were determined using Hanna portable meters, while total hardness (TH), alkalinity and bicarbonates are estimated by titrimetric methods.