What is the main reason behind the water pollution of the Yamuna river?

The Yamuna river is one of the most polluted rivers in India. There are a lot of industries situated near the bank of Yamuna near Agra, which is the cause of industrial effluents in the water of the Yamuna river. Due to the high population of Delhi, a very high amount of domestic waste is also dumped in the Yamuna river.

Hence, Industrial waste and domestic waste is the major cause of water pollution in Yamuna.