Why the need to conserve water?
Most water (97%) is in the oceans, which cover 71% of the Earth's surface. Three per cent is freshwater, two-thirds of which is tied up as ice in glaciers and at the poles. This leaves approximately 1% as freshwater in rivers, lakes, the atmosphere and in groundwater.
However, with demand rising rapidly due to a growing global population with expectations of higher living standards and resource-intensive farming, that 1% is under threat. Climate change is adding to the...
