The Central Pollution Control Board (CPCB) has directed state pollution control boards to adopt a revised classification of industries with a new category, blue.
They are the so-called “essential environmental services” such as those engaged in maintaining landfills or biomining.
The “Blue Category sector” is an incentive for the essential services an additional two years validity for consent to operate.
As per the revised methodology, the category of the sector is decided based on the following ranges of Pollution Index: Red: PI> 80; Orange: 55≤PI<80; Green: 25.
White category industries are defined as those with minimal pollution potential.
The CPCB introduced this classification in 2016 to reclassify industries based on their pollution potential.