The present work contribute to the study of the impact of the use of wastewater in irrigation of agricultural soils. The main objective is to diagnose the state of metal pollution of soils. The obtained results from the physic-chemical analysis on samples selected along the wadi Boumoussa (natural drain wastewater from the city of Settat) emphasize that these soils are sandy loam with a slightly basic pH, the electrical conductivity parameter expressing the ionic charge, varies between 1100μS/cm 1500μS/cm which refer these soils in class 0 (unsalted ground) and the organics values are between 2% and 3.5%. These values classify our soil as organic matter moyennent provided. While their cation exchange capacity (CEC) is very high. The studied soils are rich in phosphorus (P2O5> 5) and nitrate (NO3-> 30ppm). Assessed values of exchangeable cations is; calcium (CaO <2991.1 ppm), magnesium (MgO <2995.1 ppm), and potassium (K2O> 500 ppm). The analysis of heavy metals showed remarkable concentrations of Pb (26.37 ppm) and Zn (22.37 ppm) with a high pollution index (PLI> 2).