Subsurface Utilities are the

utility As a topic of economics, utility is used to model worth or value. Its usage has evolved significantly over time. The term was introduced initially as a measure of pleasure or happiness as part of the theory of utilitarianism by moral philosoph ...

networks generally laid under the ground surface. These utilities include pipeline networks for water supply,

sewage Sewage (or domestic sewage, domestic wastewater, municipal wastewater) is a type of wastewater that is produced by a community of people. It is typically transported through a sewer system. Sewage consists of wastewater discharged from residenc ...

disposal, petrochemical liquid transmission, petrochemical gas transmission or cable networks for power transmission, telecom data transmission, any other data or signal transmission. In North America alone, there are an estimated 35 million miles of subsurface infrastructure that deliver critical services to homes and businesses.

References

The field of engineering dealing with the locating and mapping subsurface utilities is termed as Subsurface Utility Engineering (SUE). Building engineering {{Engineering-stub