Soil aquifer treatment system (SAT) is a well-known technique for improving partially treated wastewater quality through soil percolation and increasing groundwater resources. This study aims to evaluate SAT system in removing some contaminants from partially treated wastewater, and reuse the treated wastewater in agriculture according to Egyptian Code of Practice (ECP) and Food and Agriculture Organization (FAO). Results indicated that vadose zone acts as an effective filter in removing contaminants from wastewater. The farther recovery wells from the infiltration basin, the lower level of wastewater contaminants. In this study, the suitable distance for extracting water with acceptable quality was found to be 1500 m from the infiltration basins for reusing in irrigation. pH value was found to be ranged from 7.53 to 7.71. Dissolved oxygen (DO) concentration was highly increased with distance. The efficiency of the system in removing biochemical oxygen demand (BOD5), and chemical oxygen demand (COD), was 98.3%, and 91 %, respectively. Heterotrophic bacteria (HB) were almost removed at 1500 m. Phosphate (PO4‾), organic nitrogen (ON), ammonia (NH3), nitrite (NO2‾), and total Kjeldahl nitrogen were completely removed. According to FAO and ECP the reclaimed water by SAT at a distance of 1500 m from the recharge zone is suitable for irrigation.