This occurs frequently on sites where the drainage system has been altered and been added to over the years. The Diagram shows that by using a specific digital locator we can detect and trace the drain precisely. The sound which emits the frequency can also be used tandem with a video camera to enable visual inspection.
:: Dye Testing
Dye testing is a method for detecting and confirming drain lines.
A dye test can be performed simply by releasing a dye (either pellet or powder), into the drainage system.