Avaliação da qualidade da água de poços escavados em áreas circunvizinhas ao aterro controlado do município de Itumbiara-GO

Abstract

Most of the population living in rural areas are served by underground water source, which is called individual alternative solution water supply. Typically, the water from these sources is extracted through dug wells and is not submitted to any treatment before being consumed, so this water can be important vehicle of transmission of a lot of diseases. This study aimed to analyze the quality of water from dug wells on farms located in the area near the landfill in the municipality of Itumbiara-GO. The dug wells from four farms in this area were selected for participation in this study, by assessing their physical and structural conditions and collecting samples of their water. Three water samples were collected from each well at different time points and analyzed in the Water Analysis Laboratory of SANEAGO S.A. and in the Chemistry Laboratory of IFG-Campus Itumbiara, according to the methods described by "Standard Methods for the Examination of Water and Wastewater", from American Public Health Association. The parameters pH, alkalinity, conductivity, turbidity, total dissolved solids and total hardness were analyzed. The results obtained by these analyzes did not show significant changes in the parameters evaluated, so the water from three wells analyzed has good physicochemical quality, which is consistent with the specifications indicated by specific legislation. But the water of one well presented results slightly changed, especially with regard to turbidity, demonstrating that the absence of well cover and its proximity to the landfill may impair the quality of its water. However, we cannot ensure the quality of that water for human consumption because the parameters analyzed were few and insufficient to determine its suitability for human consumption.