Impurities in water generally refer to any substances, particles or elements known to be present in the water source that is not part of its natural composition. These impurities can come from various sources, including industrial activities, agricultural practices, wastewater and natural processes such as erosion and weathering. Examples of impurities in water can include sediments, chemicals, minerals, microorganisms and organic matter. These impurities in the water at high levels can have adverse effects on human health, aquatic life and the environment. Therefore, it is essential to remove these impurities before it is consumed or used for any other purpose.