A general view of the Yamuna river, which is filled toxic foams caused by industrial and domestic wastes on the World Water Day in New Delhi, India on March 22, 2023. The national capital is a major culprit in the pollution of the Yamuna, accounting for about 79 per cent of the total waste water that is poured into the river by the major towns along its banks. The world marks World Water Day on March 22 every year..