Diagnosis of Water Quality in an Urban Wetland

Abstract

Purpose: The objective was to evaluate the water quality based on physical and chemical parameters in different quadrants of an urban wetland and correlate variables that may show possible natural and anthropogenic polluting sources.   Theoretical framework: Wetlands are essential ecosystems for the maintenance of ecological balance, biodiversity of organisms, and water reserves. Studies on water quality in urban wetlands are important for understanding their preservation level, elucidating the need for possible conservationist actions.   Method/design/approach: The wetland area was divided into four quadrants; water samples were collected for analysis of physical and chemical. When possible, the results were compared with the limits established by the CONAMA Resolution 357/2005 (class 1), which deals with surface waters, and with the literature.   Results and conclusion: The Quadrant 3, which presented riparian forest, invasive species, and high deposition of solid waste, showed a greater degree of environmental impact. Changes in several physical and chemical parameters indicate that the impairment of water quality in the evaluated wetland is mainly due to the anthropogenic action of the surrounding population.   Research implications: The analysis of wetland water quality as an indicator of socio-environmental actions can be implemented and stimulate public power actions, ensuring its preservation. Originality/value: Studies in urban wetlands are rare. The irregular occupation on the banks denotes a socio-environmental issue. Wetlands are a valuable resource for environmental education practices in schools.