A Sewer Scope Inspection should always be performed on older homes and homes with large vegetation, such as trees and bushes. Over the years the “Grade” or ground surrounding the property shifts and changes. In addition, trees, shrubs and the roots of vegetation crack, break and even destroy an underground sewer line. A Sewer Scope Inspection will find those damaged sections within your sewer line. it will also reveal mistakes in the installation. One should also be performed whenever you see signs of a slow drain or water backing up into a basement or foundation, to reveal the possible causes of blockage.