Monitoramento do índice de qualidade da água da Sanga da Riveira localizada em São Gabriel/RS

Abstract

The progress in the construction of sewage collection networks and Sewage Treatment Stations has been accelerated after the creation of the Basic Sanitation Framework determined by Law No. 14,026 of July 15, 2020, which in one of its topics provides for the collection and treatment of domestic effluents. In the municipality of São Gabriel, the expansion of the sewage network has been carried out since 2019, however, even after being available for 60% of the municipality and almost the entire study area, it can be observed that the inhabitants maintain their effluent discharge into the network pluvial. Thus, the present study aimed to evaluate, through the Water Quality Index (IQA) of Sanga da Riveira, the environmental conditions, in addition to observing if there is an improvement in the water quality of the water body through the eviction and proper treatment of domestic effluents in the municipality. The work was carried out during the months of June to December 2022 and January 2023, in three points of Sanga da Riveira, beginning (coordinates: -30.343789, -54.330566), middle (coordinates -30.334316, -54.326027) and end (coordinates : -30.320142, -54.317420), all belonging to the urban area, with sample collections carried out monthly. The results allowed the determination of the IQA of each point, varying between 16.2 and 33.7, which classified Sanga da Riveira as very bad and bad, respectively. In addition to this study, other bibliographies were found that describe pollution in this water body due to the release of domestic effluents, therefore, it is necessary that environmental awareness interventions are carried out, with the objective of causing positive changes in the quality of the water of the Sanga da Riveira and in the life of the inhabitants of the municipality of São Gabriel/RS.