In April 2025, the Central Pollution Control Board (CPCB) introduced which colour category for industries providing Essential Environmental Services (EES), such as waste-to-energy plants, biomining, and compressed biogas (CBG) plants?

Blue Category

The correct answer is Option 4: Blue Category

The Central Pollution Control Board (CPCB) has introduced a Blue Category for industries providing Essential Environmental Services (EES), such as waste-to-energy plants, biomining, and compressed biogas (CBG) plants. The Pollution Index (PI) categorizes industries into Red, Orange, Green, and now Blue, with waste-to-energy plants and agro-residue-based CBG plants moved to the Blue Category due to their environmental benefits.