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Electromagnetic surveys EM (Electromagnetic Methods) in the form of dipole induction profiling rely on the research the electrical conductivity of the medium. The principle is based on the induction of the primary electromagnetic field by transmitter. It generates a secondary electromagnetic field in the analyzed medium, which is proportional to its conductivity. Even the smallest differences are recorded according to the change in lithology, groundwater or pollution. Metal objects produce a strong secondary electromagnetic field, because the differential measurement of the primary and secondary allows for the precise location of buried metal objects (tanks, unexploded ordnance and others). Similarly, in the case of leachate from landfills, waste water containing salts or acids of high electrical conductivity. For this reason, the electrical conductivity is significantly increased groundwater contaminated by the waste, which allows their detection by this method.