Interactions Evaluation between the Jouamaa Hakama Groundwater and Ouljat Echatt River in the North of Morocco, Using Hydrochemical Modeling, Multivariate Statistics and GIS

The processed discharges from Tangier Automotive City’s (TAC) Chrafate Wastewater Treatment Plant (WWTP) contaminate the Jouamaa Hakama groundwater and Ouljat Echatt river. We aimed to study unknown interactions between surface water (SW) (GW). A total of nine GW samples eleven SW were taken analyzed in 2021 2022 determine 16 physical chemical parameters (pH, temperature (T), electrical conductivity (EC), dissolved oxygen (DO), hardness (TH), turbidity (TURB), solids (TDS), cations: Na+, K+, Mg2+ Ca2+, anions: Cl−, CO32−, HCO3−, NO3−, SO42−). For exploitation data, we used a methodology based on hydrochemical modeling (HM), principal component analysis (PCA), Water Quality Index (WQI), Irrigation (IWQI), inverse distance weighted interpolation (IDW) using Geographic Information Systems (GIS), regression (RA). studied interaction river (contaminated by WWTP) with shallow strip 100 m either side understand transverse longitudinal dispersion this pollution investigations indicated that major ions found characterized different order anion list Cl− > CO32− NO3− HCO3− SO42− respectively, while concentrations cations showed same for both: Na+ Ca2+ K+. As result, Piper diagram type sodium chloride magnesium carbonate, belongs sulfate type. WQI waters are all unsuitable use (WQI 100), is poor quality 76). Moreover, results GW–SW along revealed significant relationship (R2 = 0.85), which means strong circulation infiltration contaminated into occur area. approaches followed have been proven effective evaluating human animal uses. These can help decision-makers region take suitable management measures mitigate environmental problem.