Question

what are the main reason for the river water pollution?​

Answer 1

Answer:

The largest source of water pollution in India is untreated sewage. Other sources of pollution include agricultural runoff and unregulated small-scale industry. Most rivers, lakes and surface water in India are polluted due to industries, untreated sewage and solid wastes.

Hope this helps u

Answer 2

Explanation:

• chemical pollution from industries, mines, etc.; inadequate sewage collection and treatment; increase in fertilisers to grow more food. This results in an increase in nutrients (nitrates and phosphates) in the water which causes enhanced plant growth (algal blooms).