The electromagnetic measurement system MTA Pipe Electroscan is used to locate and qualify damage in non-conductive sewage pipes. Already in the 90s of the last century there were attempts to detect leaks in sewers by means of Electroscan. Today, more than 20 years later, state-of-the-art technology enables translating the principle envisaged at that time into a reliable measuring system for determining and evaluation the condition of a pipeline.