Avaliação da qualidade da água em área de influência do lixão do município de Lábrea/Am

Abstract

Landfills are a conducive environment of soil, groundwater, surface water and surrounding contamination areas. The objective of this study was to evaluate water quality in the area of influence of the landfill in the municipality of Lábrea/AM. The campaigns were carried out in the months of June and November 2023, in the dry and rainy seasons, respectively. A study was carried out to recognize the collection points (upstream and downstream), which were mapped and georeferenced. To determine the water quality index (IQA-Índice de qualidade da água), the parameters were analyzed: Fecal coliforms, pH, Biochemical Oxygen Demand, Total Nitrogen, Total Phosphorus, Temperature, Turbidity, Total Residue and Dissolved Oxygen. After collection and analysis, the data was organized in spreadsheets, according to CETESB guidelines (2013), and compared with the guiding values of CONAMA Resolution nº 357/05, class 2, where changes could be observed mainly in fecal coliform values and dissolved oxygen. After comparing the results the CETESB (2013), methodology is used again to calculate the IQA. However, observing and monitoring these results is important to understand the anthropogenic impacts on the environment, especially in surface water, being water such an important asset for maintaining life on the planet. With the results of the campaigns, the calculation for the IQA in the flood period presented an index considered bad both downstream and upstream, while in the dry period it presents good indexes downstream and excellet upstream.