New Delhi, Sept. 18 -- An assessment by the Delhi government found that Shahdara drain, which is responsible for one of the largest pollutant inflows into the Yamuna, is receiving a substantial amount of untreated effluents from Loni and Ghaziabad in neighbouring Uttar Pradesh, officials of the Delhi government said. A senior government functionary said the pollution load on the Yamuna and its sources are being assessed to prepare a comprehensive action plan. "Shahdara drain is the second biggest pollution contributor to the Yamuna after the Najafgarh drain. Just like Najafgarh drain is getting untreated wastewater from Haryana, the Shahdara drain has also been found to have substantial industrial and domestic untreated wastewater from Ghaz...