2025-12-122025-12-122024https://repositorio.ifal.edu.br/handle/123456789/1354Baronesa (Echornia sp) is an aquatic macrophyte that serves as a bioindicator and natural shelter for various organisms, playing a crucial role in maintaining the natural balance of aquatic ecosystems. Its rapid proliferation can be a relevant indicator of water quality, especially in areas impacted by sewage discharge. This study aimed to investigate the main causes of water hyacinth proliferation along the banks of the São Francisco River, in Penedo, Alagoas, Brazil. The research was conducted through the analysis of scientific articles, field observations, and rainfall data. The findings indicated that the aquatic plant tends to proliferate more during flood periods, particularly in areas with sewage discharge, highlighting the lack of effective measures by the authorities. The study proposes actions such as the construction of sewage collection systems, proper waste treatment, and manual maintenance of the plants, involving riverside communities to mitigate negative impacts. These actions are aimed at improving the quality of life of the region’s inhabitants, promoting environmental conservation and sustainability.ptEutrofização. Bioindicador. Qualidade de água. Resíduos. Monitoramento.Trabalho de Conclusão de CursoCIENCIAS BIOLOGICAS::ECOLOGIA