EM Utility Locating Service

Service Description

Electromagnetic (EM) locating is a utility locating method used to trace conductive underground utilities, such as metal pipes, tracer-wire equipped plastic lines, and energized electrical or communication cables. Twin City Locating provides professional EM locating services throughout Southwest Washington for homeowners, contractors, and property owners who need accurate utility locations before excavation or construction. EM locating works by inducing the target line with a radio frequency from a transmitter and detecting that  signal on a conductive line using a locator wand or receiver, allowing the path and approximate depth of the utility to be traced across a property. This method is commonly used for locating electrical conduits, communication lines, and plastic water services or sewer laterals equipped with tracer wire. EM locating is especially useful when the approximate location of a utility is known and the goal is to follow its path with greater accuracy. It is often used prior to trenching, fence installation, utility repairs, or site development where avoiding utility strikes is critical.