The West Bengal pollution control board will prepare a pollution map of the city in collaboration with the science and technology department.
Scientists and engineers of the two departments will use satellite images to locate the most polluted pockets of Calcutta. The board has already identified certain areas that will be photographed.
The government has in its possession a satellite map of water bodies in Calcutta and its adjoining areas that helped it detect the filling up of a huge water body off the EM Bypass.
The pollution map will help the board, the state administration and the Calcutta Municipal Corporation to have a clear idea about the extent of pollution and initiate measures to rid the city of the poison.
Shyamal Sarkar, the member-secretary of the state pollution control board, said the move is aimed at mapping industrial units, which will help in preparing an action plan to combat pollution.
A science and technology department official said preliminary work on the project has already begun. He added that a complete database would be prepared on the basis of information and complaints received by the pollution board.