Water Supply & Demand

5. to use water for cooking, cleaning and drinking.
7. collecting rainfall and storing it in a tank.
10. using water that is waste e.g. washing up water.
11. they use most of their water in agriculture and little in industry or domestic use.
12. using chemicals to create clouds.
13. are deep, narrow hole made in the ground, especially to extract groundwater. To extract the water, a pump is used.
14. is the process of removing salt from water.
15. they use significantly more of their water for domestic reasons and industrial use.

1. to use water for arable farming.
2. transfer water from areas of surplus to areas of deficits.
3. is a barrier placed across a river made from concrete.
4. are a shaft sunk into the ground to obtain water from groundwater. They can be open or covered.
6. to use water in industrial processes and cooling.
8. have been the main water source for thousands of years from rivers and lakes.
9. is an artificial lake that develops behind a dam.