As a result of poor human activities, storm water is now contaminated, notably in the Middle East. The filtering process is a physical separation with no chemical reactions occurring throughout the operation. The goal of this research is to use three distinct types of filters to improve the quality of storm water: sand, sand with granular activated carbon (GAC), and sand with cotton. Before and after treatment, the pH, turbidity, electric conductivity, TDS, and temperature of storm water are all monitored. In addition, the water quality index (WQI) was computed. The parameters of treated storm water varied depending on the filter media used, such as sand (turbidity = 83NTU, TDS= 585mg/L, conductivity = 1190 S/cm, pH = 7.1 and temperature =17.8 c), sand with GAC (turbidity = 12NTU, TDS = 540mg/L, conductivity = 910 S/cm, pH = 7 and temperature =18 c) and sand with cotton (turbidity = 6.4NTU, TDS = 490mg/L, conductivity = 1090 µS /cm, pH = 7.2 and temperature =17.6 ˚c). Sand has a treatment efficiency of 63.6 percent, sand with GAC has an efficiency of 84.9 percent, and sand with cotton has an efficiency of 84.2 percent at a flow rate of 0.66 L/min, when WQI is clean. With GAC, it is clear that the dual media filter is the finest special sand.