India, Dec. 2 -- The Central Pollution Control Board (CPCB) has identified a total of 4,493 Grossly Polluting Industries (GPIs) across the country in its report this year, of which 3,633 were operational, and 860 had shut down on their own, the Rajya Sabha was informed on Monday.

Among the operational units, 3,031 were found complying with environmental norms, while 572 industries were issued show-cause notices, 29 received closure directions and one unit was issued specific directions. In a written response to a question in the Rajya Sabha, Minister of State for Jal Shakti Raj Bhushan Choudhary said that according to the CPCB, there are a total of 4,493 industries under GPIs.

"Out of which, 3,633 industries were operational, and 860 in...