water is polluted beyond nature’s capacity for a self cleaning process in a given time and accumulation of polluted water creates a problem for the present and pose a bigger threat to the future generation and the environment. Moreover, our water resources are getting scarce and there is an immediate demand to conserve the reserves and resource. Population growth and urbanisation is happening at alarming rates and Governments and local bodies are unable to provide the services of sewers and treatment of wastewater that is otherwise provided in a planned city. Thus, the responsibility is passed on to the individuals, small communities, industries to treat their wastewater to meet the stipulated norms. There are industries and commercial buildings that produce wastewater that have special characteristics and need special treatment. Thus the polluter cleans principle is applied to commercial buildings and industries.