Qualidade das águas fluviais: estudo de caso da bacia hidrográfica de Jacarepaguá - RJ.

Abstract

The process of land use of the Jacarepaguá low-lands hydrographic region from the 1970s promoted numerous environmental impacts, specifically in water bodies, that affect, in a non-uniform, different social groups that inhabit the region. The rapid and intense urban occupation in the region, driven by the sprawl estate, created many environmental problems, mainly due to the precarious services sanitation. Various effects are conducted currently in the drainage of Jacarepaguá basin, which adversely compromise the quality of life people living in the region. This work evaluated the water quality of the main streams of the Jacarepagua basin, characterizing the current state of degradation of water bodies of the region from the analysis of data on water quality parameters obtained from the Rio de Janeiro Council Environmental, during the period between 2003 and 2008. The statistical variables of the parameters were determined, the results were presented by means of boxplots and the discussion was held and compared with the CONAMA 357/2005 Resolution. The streams of the Jacarepagua basin highlighted those used in this work express the degradation from which she has suffered as a result of human interventions that are projected in the basin. It is noted from the results for the parameters of water quality evaluated the pollution in streams of the lowlands Jacarepaguá that possibly the main aspect of water pollution is due to the dumping of domestic sewage in rivers without treatment.