The selection of ultraviolet energy depends on the absorption capacity of the molecules of the contaminant in the sample water. The ultraviolet (UV) energy not only advances the oxidation process but sterilizes the wastewater by destroying five major group of micro-organism. Previous research (Alkdasi et al., 2004) has indicated that UV light at wavelength 200–678 nm, and 50–150 W is adequate for pretreated composite water with an irradiation time of 1–4 h. Hence is the reason for selecting of the parameters for this study.