The four types of water:Surface water: These include streams, rivers, lakes, reservoirs, and wetlands.Ground water: This constitutes to around 22% of the water we use.  This is the water which is beneath the earth’s surface filling cracks and other openings in beds of rock and sand.Wastewater: The affected water due to the involvement of human results in wastewater. This can be formed from agricultural activities, urban water use, and sewer inflow and stormwater runoff.Stormwater: The water which is generated when precipitation from rainfall and snowmelt occurs above the land surface without penetrating into the ground is known as stormwater. This runs over surfaces like asphalt containing pollutants like engine oil, fertilizer, and radiator fluid.