Detecting Underground facilities and discovering their characteristics and their precise landfill are one of the challenges facility engineers always face. The development of cities and the need for developing new facility and welfare systems, as well as the need for maintaining older networks, has made it very important to determine their exact locations. Regarding this, many non-destructive methods have been considered by many engineers in order to save time and money and to reduce the disruption caused by unplanned excavations in urban areas as well. One of the nearsurface geophysical methods, which has been successful in recent years, is the GPR method. The purpose of this investigation is to identify subsurface installations along the wastewater pipeline, where various anomalies, such as covered channels, water or gas pipes, and electrical cables are identified and illustrated.