Abstract The Spatio-temporal variations of certain physicochemical parameters were studied, in fact the sampling was carried out during the year 2014. Two samples were taken per well, and per season. The analysis results obtained show that high mineralization of the well water as indicated by the high values of the electrical conductivity and the major ions, chlorides, sodium and sulphates. A higher hardness accompanied by an evolutionary nutritive contamination. It is clear from this study that the water table in the oulja zone is contaminated and has water of degraded quality.