Qualidade da água em quatro córregos urbanos de São Gabriel/RS

Abstract

The degradation of water resources has been shown to be the main impact of recent times worldwide and studies on water quality are necessary for the proper management of these resources. The present study aimed to evaluate the water quality of four urban streams of São Gabriel/RS, compared to the current legislation and literature. The bibliography review sought to chain ideas such as the history of urban development, water resources, urban waters, irregular occupations, urban soil, quality and parameters for the evaluation of the waters and legislation. The study took place between September and November in 2016, five points were chosen along each stream with three samples for each one. The parameters used for assessing water quality were pH, electrical conductivity, color, turbidity, phosphorus, ammonium and nitrate, for the soil were analyzed the ammonium and nitrate parameters. The concentrations of the evaluated parameters showed that where there is irregular drainage of sewage and disposal of solid residues there are sources of pollution, mainly referring to phosphorus, ammonium and nitrate that presented at some high values, considering these are the main nutrients causing eutrophication in water.