Potabilidade das águas subterrâneas e análise geofísica do entorno do cemitério São José em Capanema-PA

Abstract

This research aimed to analyze the quality of the groundwater used for human consumption in the surroundings of the São José municipal cemetery located in Capanema-PA. Firstly, a questionnaire was applied to the inhabitants of the vicinity of the cemetery to identify the residences that were supplied by artesian wells. The results showed that several residences around the cemetery have artesian wells and consume their water. In the physical-chemical analyzes of the groundwater, high values of electrical conductivity were observed, indicating a possible necrochorume contamination. Regarding the microbiological analyzes, the presence of total coliforms and Escherichia coli were detected in two of the four wells monitored, which makes the water unfit for human consumption. The Ground Penetration Radar (GPR) method was used to verify the hydrostatic level (NH) of the cemetery, as well as possible plumes of contamination by necrochorume, being verified that the NH is around 4 m deep, being which in the lower regions was around 3.5 m. It was also verified the presence of several attenuated reflectors, indicating areas of probable contamination.