Hydrogeochemistry and Water Quality Assessment in the Thamirabarani River Stretch by Applying GIS and PCA Techniques

The primary objective of this research is to assess the hydrogeochemical features and water quality Thamirabarani river stretch, located in southern India. Thirty-five samples from stretch were obtained districts Tirunelveli Thoothukudi. Twelve parameters measured during pre-monsoon post-monsoon periods 2020 2021. analytical results verified with BIS WHO standards evaluate for drinking purposes. A Geographic Information system (GIS) was applied know spatial variation properties over area. Moreover, Water Quality Index calculated it revealed that 15% used are outstanding, 35% fit potable use, 25% poor, very 10% unfit consumption. Principal Component analysis (PCA) performed find out dominant factors their variance coverage overall quality. PCA indicate a sample Zone 1 known its alkalinity. qualities 2 3 affected by anthropogenic industry wastes. More sea intrusion observed 4 basin.