This document discusses water facts and rainwater harvesting. It notes that 75% of the Earth's surface is covered in water, but only 3% is freshwater and just 0.33% is accessible for human use. Rainwater harvesting is introduced as collecting and conserving rainwater, which farmers can use for irrigation instead of relying solely on rainfall. To emphasize water conservation, the document provides an example calculating how much water could be saved in a month if 100 houses reduced daily water waste by 5 liters each.

1. WATER
- HIMANSHU BODHANKAR
- ROLL NO- 7126
- CLASS- 7TH A.

2. • 75% of the earth’s surface consists
of water in the form of oceans.
• Out of which 3% is not saline.
• 2.67% of this water is in the form
of glaciers, icecaps, etc.
• Hence only 0.33% out of the total
water on earth is potable.

3. RAINWATER HARVESTING
Collection and
conservation of rain water
is known as rainwater
harvesting.

4. This process is extremely easy and farmers can
employ this process for irrigation instead of solely
depending on rainfall.

5. CONSUMPTION OF WATER

6. Lets take a quick survey!
• Suppose a house wastes 5 litres of water in 1
day.
• Therefore, 100 houses in a locality =
5x100=500 litres.
• No. of days in a month= 500x30=15000
litres.
NOW THINK ABOUT THE NUMBER OF LIVES WE
COULD HAVE SAVED IN A MONTH HADN’T WE
WASTED SO MUCH WATER!

7. THANK
YOU ! 