Stormwater originates during ice melts and precipitation events. It can run off or be held on the surface eventually getting evaporated or soak into the soil (called infiltration). Stormwater treatment means the removal of toxins and pollutants from the water. Running stormwater is a major source of pollution. The increased flow of stormwater can encourage weed incursion, stream erosion and also impact natural flow regimes. In certain developed areas, the polluted water runoff from roads which is again accelerated by storm water, can be a cause of water pollution when this water joins the main water bodies like lakes and oceans, which will have adverse effects on the flora and fauna and also on the lives of human beings living near the water bodies. Studies show that main reason for water pollution is especially due to growing industrialisation. Chemical companies release harmful chemicals in liquid as well as gaseous form. When these gases mix with stormwater, they get carried away a...