Hydrochemistry appraisal, quality assessment and health risk evaluation of shallow groundwater in the Mianyang area of Sichuan Basin, southwestern China

Sixty groundwater samples were collected from the Mianyang area in Sichuan Basin for hydrogeochemical analysis, quality assessment, and human health risk evaluation. Principal component analysis (PCA), ratios of major ions and geochemical modelling were used to investigate the factors regulating the hydrogeochemical compositions. Groundwater samples were of Ca-HCO3 type and the average cation and anion concentrations were in the order of...