Geospatial approach for assessment of groundwater quality

The increasing population, erratic distribution of rainfall, and their rising demand for water in domestic irrigation are fulfilled by groundwater resources. Due to overexploitation, there is the deterioration quality, hence evaluate a study was undertaken understand suitability drinking as well purposes. For this study, five villages, namely Kumulur, Tachankurunchi, Pudurutamanur, Pandaravadai Poovalur, were selected from Trichy District, Tamil Nadu, India, with an aerial extent 45.1 km2. quality assessment, samples drawn 53 locations sources like open wells, bore wells hand pumps, etc. Parameters pH, EC, TDS, Anions— $${\text{CO}}_{3}^{-2 }$$ , CO3 2−, HCO3−, Cl−, $${\text{SO}}_{4}^{2 - Cations—Ca2+, Mg2+, B3+, Na+ potassium (K+) estimated using standard analytical procedure three different seasons, viz., S-I (September 2019), S-II (December 2019) S-III (March 2020). WQI computed found that 25% S-I, 80% 83% above permissible limit Indices Sodium Percentage, Adsorption Ratio, Permeability Index, Kelly’s Magnesium Hazard Potential Salinity, USSL Diagram, Wilcox Plot, Piper Diagram Gibbs plot evaluated examining quality. results revealed 90% area, suitable purposes few (10%) wherein salt content relatively higher than entire area.