AVALIAÇÃO DA QUALIDADE DA ÁGUA DO CÓRREGO DO SAPO NO MUNICÍPIO DE RIO VERDE – GOIÁS, UTILIZANDO ANÁLISES FÍSICO-QUÍMICAS E MICROBIOLÓGICAS

Abstract

The water is a first-need resource. No community can live or evolve without an adequate water supply, which allows their inhabitants live in a healthy way and contribute to the economy development. The sustainable development notion cannot be conceived without ensure the human consumption water quality. Therefore, it is, undoubtedly, a precious resource. The human consumption water must attend quality parameters, because it may contain physical, chemical or bacteriological impurities. The water potability standard consists in organoleptics (taste and odor), microbiologicals and physico-chemicals parameters which confers adequate human consumption quality. In this sense, this work aimed to assess the Córrego do Sapo water quality, located in Rio Verde - GO municipality, in four different collection points in order to minimize the risks to human health arising from the contaminated water consumption. To do this, were evaluated physical, chemical and microbiological parameters such as temperature (T), hydrogen potential (pH), total dissolved solids (STD), electrical conductivity (CE), nitrate (NO3- ), dissolved oxygen (OD), turbidity (TUR), chemical oxygen demand (DQO), total phosphorus (FT), total coliforms (CT) and thermotolerant coliforms (CTT) and all the used procedures followed the Standard Methods for examination of Water and Wastewater of AWWA (America Water Works Association). The obtained results showed that some parameters are within the limits established by CONAMA Resolution n◦357 from 2005 for fresh waters Class 2. However, other parameters denote a great anthropic action influence on this water course, demonstrating that the evaluated creek is fairly affected and its water presents no appropriate consumption quality.