HISTORICAL SERIES (2001-2012) OF MICROBIOLOGICAL CONDITIONS OF THE CAPIVARI RIVER (RS), CONCERNING TO THE ESCHERICHIA COLI PARAMETER

ABSTRACT: The aim of this study was to analyze the microbiological quality in function of Escherichia coli of Capivari River, near the municipality of Capivari do Sul (RS), during the years of 2001 to 2012, apart from its influence on primary contact recreation. This study performed of documentary nature combined with quality quantitative properties, which provided the scope of the proposed objective. The results revealed that the parameter involved in this study was within the standard recommended by the CONAMA resolution 357/05, every year under study. There was no water resource degradation as a function of the parameter analyzed, being the years that showed major averages were 2003, 2007 and 2008, being lightly near the limit. These values can be explained by the region's rainfall, which led to the load of organic matter and animal feces to the riverbed, not being recorded releases of sewage and industrial effluents. In this way, the waters showed good microbiological quality in function of E. coli, with the absence of risk to the population as the primary contact recreation, being given to the promotion of activities foreseen for class 2 rivers, as animal watering, irrigation of vegetables and fruit