Instead of having separate indices for soil, water and air, Comprehensive Environmental Pollution Index (CEPI) combines all of them in a single index, to assign a numerical value to the extent of pollution in an industrial cluster.
In a thermal power plant (TPP), water is used for various purposes such as in the boiler, cooling system, and coal and ash handling systems, with the bulk of the quantity being used in the cooling system. As per Environment (Protection) Amendment Rules, 2017, notified by the Ministry of Environment Forest and Climate Change (MoEF&CC), all new plants installed after January 1, 2017, should not consume more than 3m3/MWh power produced.