Just a
reduction in the amount of rainfall that news soon reached: It´s going to lake
water in your city. In March after a long dry season, the levels of the
reservoir Sistema Cantareira, which supplies the metropolitan
region of São Paulo, reached 15%, the lower level since the system was built in
1974. The normal level for this period is like 60%.
In the last 45 years, the water volume desalinated in
the world rose basically zero to 60 billion liters per day. The solution, which
started in 1970 in the Middle East, today is already present in 150 countries.
The reason of this rose it´s simple: the fresh water is becoming increasingly
scarce, mainly because of population growth and the expansion of industrial
activities and the agricultural system.
In Brazil, the hydroelectric power plants are
responsible for more than two thirds of the electricity. So the lack of
rainfall and the water shortage affect the supply of electricity, causing
blackouts, rationing, etc.
With population and cities growth and the economic
development increases the demand for water resources and the fresh water begins
to be insufficient for all. The
possibility of the water scarcity in the future warns Brazil of the necessary
to reducing their dependence of the hydroelectric plants. In a not very distant
future, the scenario is drawing to countries fighting for more water and less
for oil.
Group: Bruno
Sperini, Júlia Neves e Maria Eduarda.
Grade: 3ºC
References:
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