Answer:
(i) The growing domestic, municipal
industrial and agricultural demand for water from rivers naturally affects the
quality of water.
(ii) As a result, more and more water is being drained out
of the rivers, reducing their volume.
(iii) On the other hand, a heavy load of untreated sewage
and industrial effluents are emptied into the rivers.
(iv) This affects not only the quality of water but also
the self-cleansing capacity of the rivers.
(v)
But the increasing urbanisation and industrialisation do not allow it to happen
and the pollution level of many rivers has been rising.
How
to prevent pollution:
(i) The effluents of the industries should be treated
before they enter the river waters.
(ii)
People of the urban areas living on the banks of the rivers should be
sensitised about the pollution levels of the rivers and the difficulty in
cleaning it.
(iii)
Since Indians are religious-minded and most of their festivals are associated
with pure water of rivers, the immersing of deities, and of religious goods and
even the dead are associated with these holy rivers, resulting into pollution,
which needs to be checked and controlled.
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