Análise da qualidade das águas do Rio da Prata

Abstract

The assessment of spatial and seasonal changes in surface water quality is an important aspect to reveal the conditions of a water resource, and yet determine whether a variable should be attributed to anthropogenic use or natural changes, from point or diffuse sources. In order to characterize the quality of the water in Pratariver, the most important socioeconomic resource for the municipality of Jardim – MS, three collection stations were used along the course of the river. The analyzed variables include the physical-chemical parameters: temperature, pH, electrical conductivity, dissolved oxygen, organic material (oxygen consumed), total acidity, total alkalinity, chlorides, hardness, turbidity and total components. The results revealed that the main agent influenced the water quality in Prata River or the pluviometric index, since, in the first month, it evaluated a great variation in the verified tests that were observed after an isolated rain. The parameters of turbidity, complete totals and acidity were the ones that most influenced the rain volume. The average concentrations for the physical-chemical variables did not exceed the limits recommended by CONAMA resolution 357/05 in all points, therefore, there is no restriction on use regarding these requirements.