In 2017 our company carried out a geophysical survey in Leksadrowa, Lesser Poland Voivodeship. Our team had a task to determine location of new well for groundwater exploitation for Nowy Wisnicz municipality. An Elecrical Resistivity Tomography method (ERT) was used to prosecute this kind of survey. ERT tomography allows to measure and to provide interpretation in the 2D geometry. This method is used to diagnose geological structures and geo-engineering issues.