The Supreme Court has directed the Central Pollution Control Board, CPCB to file a comprehensive affidavit on the character and content of reported contamination of ground water in Bhopal's Arifnagar area due to the 1984 Union Carbide gas tragedy.

A bench of the apex court also asked the Board to recommend measures to overcome the contamination and the action to be taken in this regard.

The bench passed the order while dealing with a PIL filed by an NGO on various pollution related issues in the country.