How do you locate underground utilities and sewer lines?

To locate underground utilities and sewer lines, you can use several methods, including utility mapping services, ground-penetrating radar (GPR), and electromagnetic locating devices. Utility mapping services can provide existing maps and records of underground infrastructure. GPR uses radar pulses to image the subsurface, while electromagnetic devices detect the electromagnetic fields generated by buried utilities. Additionally, contacting local utility companies for assistance and marking services is essential before any excavation work.