ANÁLISE DA QUALIDADE DA ÁGUA DO RIO CORUMBÁ NO MUNICÍPIO DE URUTAÍ - GO

Abstract

This study aimed to perform analysis of the water quality of the Corumbá River, in the municipality of Urutaí (GO), highlighting its environmental, social, and economic importance to the region. The Corumbá River is part of the Paranaiba River basin and plays a strategic role in human supply, agricultural irrigation, recreation, and hydroelectric power generation, constituting an essential resource for local and regional development. In this context, understanding its environmental quality is fundamental for the sustainable management of water resources. The study investigated the influence of seasonality on physicochemical and microbiological parameters, comparing data collected during the rainy season of 2024 with new samples obtained in the dry season of 2025. Samples were collected at two strategic points along the river: Point 1, located downstream under possible anthropogenic influence, and Point 2, situated upstream in an area with lower direct interference. Parameters analyzed included pH, electrical conductivity, turbidity, dissolved oxygen (DO), biochemical oxygen demand (BOD), total solids, nitrate, total phosphorus, and coliforms. In 2024, Point 1 presented a more critical scenario, characterized by high turbidity, acidity, and elevated fecal contamination, resulting in a Water Quality Index (WQI) classified as “Poor.” In 2025, significant improvement in physical parameters was observed; however, increases in nitrate, phosphorus, and BOD concentrations were detected, suggesting higher organic load and possible pollutant concentration due to reduced river flow during the dry season.