Groundwater quality data on physico-chemical, bacteriological and heavy metal concentrations in three cities (Faridabad, Allahabad and Varanasi) in Ganga-Yamuna basin was subjected to multivariate analysis using SPSS. The factors extracted showed high loading (>0.3) of various parameters, such Cl, conductivity, TDS, hardness, Na, Mg and SO4 indicating contamination due to leaching of pollutants.