Water is an important resource for the people and the environment. It is the basis of life. Pollution of water affects drinking water, river and oceans all over the world. Water pollutants affect all living species and the complete functioning of the ecosystem that lives in the water. The major water pollutants are sewage, metals, lead, cadmium, arsenic, agrochemicals like DDT, microorganisms, plastics, detergents, oil and gasoline, inorganic chemicals, radioactive waste, sediments, plant nutrients, animal manure and plant residues, thermal pollution etc. Detergent is the waste from household, industries and firms that trigger organic pollution.
So, the correct answer is option C.