Avaliação da qualidade da água dos poços na Comunidade da Ilha de Lençóis, Cururupu/MA

Abstract

Water is essential for life and human health, being used in various daily activities. However, the quality of this water resource has been deteriorating due to pollution and lack of sanitation infrastructure, increasing the risk of Waterborne Diseases (WD). Thus, this study aimed to carry out physical-chemical and microbiological analyzes of water from wells supplying the community of Ilha dos Lençóis, located in the municipality of Cururupu/MA. A methodology with qualitative and quantitative analyzes was adopted, where microbiological analyzes revealed widespread contamination, with 100% of the samples showing total coliforms and Escherichia coli, confirmed by chromogenic and fluorogenic tests using COLItest®. Regarding the physicochemical configurations, temperature values were observed varying between 29.4 °C and 30.1 °C, pH between 6.4 and 7.0, electrical conductivity from 61.9 μS/cm to 219 μS/ cm, salinity 0.07 to 0.32 ppt, dissolved oxygen 2.6 to 5.2 mg/L, total solids distributed (TDS) from 74.9 to 309 ppm and a total hardness between 16 and 92 mg/L. Although these results meet the limits established by the current ordinance, they generally indicate potential risks to public health and the environment, especially due to microbiological contamination and oxygen levels below recommended values in some samples. These results highlight the need for actions to guarantee access to drinking water and ensure improvements in life and health in the community.