Answer:
The
figure on the right shows a typical method of rooftop rainwater harvesting
being practiced in India. The rainwater falling on the roof is collected by a
PVC pipe and filtered using sand and bricks, before being taken underground to
a sump for immediate use. Excess water from the sump is transferred to a well,
which recharges the groundwater. Any further requirement of water can be taken
from the well.
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