'Rain water harvesting' speech in 60 to 80 words
Answers
Speech on Rain Water Harvesting!
Current technologies of rainwater harvesting require that all roof and terrace water passes down into a covered tank where it can be stored for use after the monsoon.
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This is most advantageous in constructing large storage tanks which are expensive. Another way of using rooftop rainwater harvesting is to collect it so that it percolates into the ground to recharge wells instead of flowing over the ground into rivers. Thus, by recharging the groundwater by water harvesting from rooftops, the table rises and the surrounding wells retain water throughout the year.
For centuries, people have relied on rainwater harvesting to supply water for household, landscape, livestock, and agricultural uses. Before large centralized water supply systems were developed, rainwater was collected from roofs and stored on site in tanks known as cisterns.
With the development of large, reliable water treatment and distribution systems and more affordable well drilling equipment, rain harvesting systems have been all but forgotten, even though they offer a source of pure, soft water.
A renewed interest in this time-honoured technique/ approach emerged in recent decades due to following reasons:
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a. The problem of water shortage in arid and semi-arid regions
b. The escalating environmental and economic costs of providing water by centralized water systems or by well drilling
c. Health benefits of rainwater
d. Potential cost
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Answer:
Explanation: Rain water harvesting means saving rain water for our domestic uses. We should not allow rain water to flow through the roads. At some area waters are easily provided but at some area it can't. Some of people drink by cleaning dirt as a drain water water can't be clean purely so,many disease can catch them. We should make a tank and rain water. And joint with our houses pipe.
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