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| Comparative Global Usage Of Water By Three Sectors |
Depicted
graph illustrates changes in water consumption by farming, industry and
household sectors in last century, i.e. from 1900 to 2000.
In
1900 water consumption in agriculture was under 1000 cu.kms while demand in
industry and household sectors was much less than agriculture sector.
From
1900 to 1940 negligible changes were observed in demand for water in all three
sectors. In next 3 decades (1940-1970) consumption in agriculture rose steeply,
while demand in manufacturing and domestic sectors rose steadily. Between1970
to 2000 demand in farming further rose significantly while consumption doubled
in manufacturing sector though domestic usage registered steady rise.
Similarly,
table compares per-capita water consumption of Brazil and Congo in year 2000 in
relation to population and area of arable land. The figures highlight that
Brazil has much higher per-individual water consumption than Congo because of
higher population and large parcel of arable land.
To
conclude, farming sector has remained largest user of water with consumption rose
three folds in a matter of century as illustrated by example of Brazil and Congo.
