Spatial correlation of groundwater pollutants with the vulnerability index in Kano Metropolis, North-western Nigeria

Abstract This study performed a correlation analysis between groundwater quality parameters with organic and inorganic pollutants using the area under curve (AUC) of receiver operating characteristics (ROC) map in Kano Metropolis, North-western Nigeria. The aim is to present spatial relationship existing vulnerability condition resources view developing risk map. Eight water (Ca, Al, Cl, NO3, TH, Mg, TDS which include potassium sodium) pH were used develop index represent general overview pollutants. Vulnerability (depth water, net recharge, aquifer media conferment on sensitivity analysis) as reference points for preparing ROC. Inorganic hydrocarbons representing integrated into process identifying their influence pollution level area. measured AUC ROC revealed positive (63.7%) (65.6%). mapping based hydrocarbon concentration high risk, especially core centre metropolitan Kano. HIGHLIGHT Groundwater studies are one key issues management, areas such (Kano Metropolis inclusive) rising population.