What’s in a color?


Did you ever park on the street or walk on the sidewalk and noticed different colour markings on the concrete and wondered what that’s all about?

Well, let’s start by understanding first what each color stands for as for the reason behind it all….

Companies with underground networks have agreed to a color code to identify the type of network buried. Each member company marks the precise location of its network using color as shown:

Red- Electricity

Blue- Aqueduct

Yellow- Natural gas and oil

Pink- Survey

Orange- Telecommunications & Cable

White – pre-labelling


Purple- Irrigation

street paint

Scan Plus uses Ground Penetrating Radar AND Radio Detection to locate the underground utilities. Scan Plus use of both technologies allows for an extremely thorough investigation. The Radio Detection can only detect metal utilities or plastic with a tracer wire, and GPR can detect anything in the soil within the electromagnetic frequency parameters which are for every foot of soil penetration the target must be an inch in diameter. Therefore both technologies used together provide the most thorough investigation available.

The nationally recognized colour code system for utility locating provides a universally accepted system for engineers, facility managers and construction workers to be able to understand the type of utility that may he hidden under the ground, in walls or behind concrete. When working in a mark-out area proceed with caution. Flags and different color paint markings are placed with the use of sophisticated utility locating equipment. Utility Survey uses advanced Ground Penetrating Radar, Radio Frequency location equipment and other devices in an effort to determine the type and depth of hidden obstacles.

ligne de peintureDo let us know what you thought about the colour markings on the ground? Did this Blog post help you to understand the importance in such markings on the ground? Even more so, the importance in the nationally recognized colour code system for utility locating in concrete. We’d love to hear from you…….