Prospection of riverbank filtration feasible areas by electrical resistivity tomography

Abstract The riverbank filtration (RBF) is a very economic technique, as it utilizes the bank's soil as a filtration media, dismissing the use of chemicals and large constructions in the treatment process. Depending on the quality of the water source RBF is able to produce good quality water, or it can be utilized as pre-treatment for springs with lower quality. This technique's deployment depends on the natural conditions of each place, requiring an area prospection study, to assess the riverbank's hydrogeological conditions and the river's morphological data. Aiming to promote alternative solutions to water scarcity at Salto-SP, the prospection Jundiaí river bank filtration, through the use of a geophysical technique, tomography by electroresistivity, in order to find a feasible area. The method turned out to be efficient for its purpose, as it allowed a detailed investigation of the desired spots, providing data about the hydraulic connection and the aquifer's width.