Question

do you know of any activity which may be polluting this water source?

Answer 1

The growing population and industrial activities directly pollute the water
The environment department initiated a program for reduction of poppulation such as Ganga Action Plan

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Answer 2

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$\tiny \bold{YOUR \: ANSWER : }$

The discharge of waste water from homes, industries, hospitals, etc. into the river pollutes this fresh water source.

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