Bhopal: People’s preference for eco-friendly clay idols of Ganesh has ensured that the lakes in the city are much less polluted than earlier after the immersion of the idols. A study by the MP State Pollution Control Board (PCCB) shows that while the Oxygen levels at different points in the city’s lakes had gone down by 1.0 mg per litre after the immersion of the Ganesh idols last year, this time the drop has been less than 0.3 mg per litre.
The Board had taken samples of water on September 23 and compared them with the samples taken on Sunday after the immersion of Ganesh idols. The quantity of total dissolved Oxygen in water fell from 6.8 to 6.5 at Khatlapura, 7.1 to 7.0 at Bairagarh, 6.2 to 6.0 at Shahpura and 7.0 to 6.7 at Kaliasot dam.
PCCB chief chemist Sangeeta Dani said that the Board is yet to analyse the samples for the presence of chromium, zinc and copper.