Abstract: Soil Aquifer Treatment (SAT) systems can be used for upgrading partially treated wastewater by infiltrate into the soil for tertiary treatment for reuse. In this study, a pilot plant of three columns of 2 m height and 25 cm diameter were designed and fabricated to study the quality improvement of the conventional effluent treated wastewater using three types of soil. The pilot was operated under three operational phases; first worked as 4 days wetting followed by 3 days drying cycle, the second worked as 3 days wetting followed by 4 days drying and the third phase worked as 5 days wetting and 2 days drying. The pilot plant of columns was fed using the effluent of Qaha secondary wastewater treatment plant. The results indicated that, the medium sandy soil operating with 3 days wetting/4 days drying cycles had the highest removal performance for BOD, COD and TSS (64%, 38 % and 86%) respectively