SS4.08 Global Freshwater Quality: Issues, needs and solutions
Date: Wednesday, June 12, 2002
Time: 11:00:00 AM
Location: Carson A
 
MartinelliLA, CENA - University of São Paulo, Piracicaba, Brazil, zebu@cena.usp.br
Silva, A, M, CENA - University of São Paulo, Piracicaba, Brazil, amsilva@cena.usp.br
Ballester, M, V, CENA - University of São Paulo, Piracicaba, Brazil, vicky@cena.usp.br
 
POINT SOURCES POLLUTION IN BRAZIL AND FRESHWATER QUALITY
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In developing countries, like Brazil, the major sources of pollution to aquatic systems is partially treated or untreated domestic sewage and industrial effluents. The São Paulo State, located in the southeast region of Brazil, is the most developed region of the country. Based on population size and on the volume of treated domestic sewage we estimated the amount of carbon discharged into rivers and streams in each one of the 645 counties of the São Paulo State. With these estimates we produced maps of the State locating critical areas in terms of threatning to the aquatic systems. In addition, we will also discuss the effects of this extra organic matter load to aquatic systems in seven watersheds of the State, varying in size from 5,000 to 20,000 km2.