What is it about?
Over 70% of Delhi’s drinking water supply comes from the Yamuna River. An estimated 57 million people depend on the water of the Yamuna River. The capital region, Delhi, generates about 76% of the total pollutants in Yamuna. 95% of the Yamuna pollution in Delhi is resulted due to discharge of wastewater through seven major drains, viz., Najafgarh, Yamunapur, Sen Nursing Home, Barathpula, Maharani Bagh, Kalkaji and Tuglakabad. The major outfall is the Najafgarh drain which contributes nearly 70% of the total pollution load to Yamuna in Delhi. The Najafgarh Drain is the capital’s most polluted body of water due to the direct inflow of untreated sewage and submergence for various small drains.
Why is it important?
This study would help to identify the main sources of sub-drains which are polluting Najafgarh Drain and eventually the river Yamuna which is major source of drinking water for Delhi. In this study we analysed the wastewater samples collected by sub-drains and STP’s to predict the pollutant transportation in river Yamuna from Najafgarh Drain. The study focusses on the only pollutant, i.e., Biochemical Oxygen Demand from the starting point to after the confluence of Najafgarh Drain into river Yamuna