The graph shows how the amount of water used worldwide changed between
1900 and 2000.
Throughout the century, the largest quantity of water was used for agricultural
Purposes, and this increased dramatically from about 500 km³ to around
3, 000 km³ in the year 2000. Water used in the industrial and domestic sectors
also increased, but consumption was minimal until mid-century. From 1950
onwards, industrial use grew steadily to just over 1, 000 km³, while domestic
use rose more slowly to only 300 km³, both far below the levels of consumption
by agriculture.
The table illustrates the differences in agriculture consumption in some areas
of the world by contrasting the amount of irrigated land in Brazil (26, 500 km³)
with that in the D. R. C. (100 km²). This means that a huge amount of water is
used in agriculture in Brazil, and this is reflected in the figures for water
consumption per person: 359 m³ compared with only 8 m³ in the Congo. With a
population of 176 million, the figures for Brazil indicate how high agriculture
water consumption can be in some countries.
The graph
shows
how the amount of
water
used
worldwide
changed
between
1900 and 2000.
Throughout the century, the largest quantity of
water
was
used
for agricultural
Purposes, and this increased
dramatically
from about 500 km³ to around
3, 000 km³ in the year 2000.
Water
used
in the industrial and domestic sectors
also
increased,
but
consumption was minimal until mid-century. From 1950
onwards, industrial
use
grew
steadily
to
just
over 1, 000 km³, while domestic
use
rose more
slowly
to
only
300 km³, both far below the levels of consumption
by agriculture.
The table illustrates the differences in agriculture consumption in
some
areas
of the world by contrasting the amount of irrigated land in Brazil (26, 500 km³)
with that in the D. R. C. (100 km²). This means that a huge amount of
water
is
used
in agriculture in Brazil, and this
is reflected
in the figures for water
consumption per person: 359 m³ compared with
only
8 m³ in the Congo. With a
population of 176 million, the figures for Brazil indicate how high agriculture
water consumption can be in
some
countries.