The Essential Guide to Underground Utility Locating

26 August 2025

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What Is Underground Utility Locating?

Before any concrete is cut, any trench is dug, or any foundation is poured, there's one critical step that needs to happen: underground utility locating. It’s the unsung hero of construction prep work—preventing disasters, protecting workers, and keeping projects on track. Whether you’re installing a new drainage system, cutting into a concrete slab, or setting up major infrastructure, knowing what’s below is essential.


In this guide, we break down what underground utility locating is, why it’s so important, how it works, and why you should trust Cobra Southeast to get it done right.

Contractors locating underground utilities.

Underground utility locating is the process of identifying and mapping out utility lines and infrastructure buried beneath the surface before excavation or construction begins. These utilities can include:


  • Water and sewer pipes
  • Gas lines
  • Electrical and communication conduits
  • Fiber optic cables
  • Storm drains and irrigation systems


Using advanced technology like Ground Penetrating Radar (GPR), electromagnetic detection, and utility mapping tools—professionals can
pinpoint the location and depth of these lines to avoid accidental strikes.


At Cobra Southeast, we specialize in advanced GPR scanning and utility locating across Georgia and the Southeast, giving contractors and municipalities confidence in every cut and dig.

The Hidden Dangers Beneath the Surface

You can’t avoid what you can’t see and what’s underground can be costly, dangerous, and even deadly if struck. Every year, thousands of utility strikes occur on job sites, leading to injuries, project delays, environmental hazards, and fines.


Risks of striking underground utilities:

Gas Lines

A nicked gas line can lead to leaks, explosions, and serious safety threats for workers and nearby buildings.

Electrical Conduits

Severing a live power line can cause outages and electrocution hazards.

Water Pipes

Damaged water lines can flood job sites and halt progress for days.

Fiber Optic Cables

Interrupting communication networks can affect everything from hospitals to 911 systems—and come with steep repair costs.

The truth is, there’s no such thing as “just digging a little.” One bad move can cost thousands and compromise your entire project.

How Underground Utility Locating Works

So how do we know what’s underground without digging? That’s where Cobra Southeast’s expertise comes in.

Step 1: Site Evaluation

We begin by thoroughly reviewing site plans, detailed blueprints, and any available utility records to understand what might be below.

Step 2: Surface Scanning

Using Ground Penetrating Radar (GPR), we send radar pulses underground. When waves return, we interpret data to detect lines, voids, anomalies, and even some non-metallic ones.

Step 3: Electromagnetic Detection

We use electromagnetic equipment to detect and trace conductive lines like electric or copper water lines. This helps confirm the presence and path of utilities identified via GPR.

Step 4: Marking & Reporting

We mark out utility locations on-site with paint, flags, or chalk, and provide detailed maps and digital reports so your team can plan accordingly.

Our technicians are trained to read complex signals, filter out interference, and deliver accurate, dependable results, even in high-density or urban environments.

Key Benefits of Professional Utility Locating

Here’s what you get when you partner with a pro, especially one with over 50 years of concrete and construction experience.

1. Safety First

Protect your crew, your equipment, and your job site from accidents caused by unexpected utility strikes.

2. Fewer Delays

Avoid costly interruptions and emergency repairs that derail your project timeline.

3. Regulatory Compliance

Meet local and federal requirements for pre-excavation locating and documentation.

4. Cost Savings

Paying for professional locating now costs far less than dealing with repairs, lawsuits, or rerouting work later.

5. Accurate Data

Gain peace of mind with precise, detailed locating and mapping, especially for complex or layered sites.

When Do You Need Utility Locating Services?

If you're asking, “Do I need utility locating for this project?” the answer is almost always yes. You need it when:


  • Cutting or coring concrete slabs
  • Digging foundations, trenches, or post holes
  • Installing plumbing, electrical, or HVAC systems
  • Performing concrete demolition or excavation
  • Replacing or repairing underground infrastructure
  • Working near roadways, sidewalks, or utility easements


Whether you're on a new construction job, a hospital retrofit, or an infrastructure upgrade, knowing what's below is critical—and mandatory in most jurisdictions.

Why Choose Cobra Southeast for Utility Locating?

Not all utility locating services are created equal, and when your project’s success and safety are on the line, you need a partner with experience, precision, and reliability. Contractors across Georgia turn to Cobra Southeast because we bring over 50 years of hands-on construction and concrete expertise to every job. We don’t just locate utilities; we understand the full scope of the project around them.


Our team uses advanced Ground Penetrating Radar (GPR) and electromagnetic locating equipment to deliver fast, accurate results you can trust. Our technicians are highly trained, fully certified, and pride themselves on getting it right the first time. When it comes to buried utilities, there are no second chances.


With 24/7 service availability and rapid response times, we’re always ready when you need us. Our strong partnerships with general contractors, municipalities, and industrial clients mean we’re familiar with a wide range of project types and job site demands. We work confidently in hospitals, schools, malls, infrastructure projects, and other complex environments where precision matters most.


At Cobra Southeast, utility locating is more than just a box to check. It’s a critical step in protecting your crew, your timeline, and your bottom line.

Protect Your Project with Expert Utility Locating

Underground utility locating on a sidewalk.

Underground utility locating is the foundation of a safe, efficient job site. Every successful concrete cut, core drill, or excavation starts with knowledge and that knowledge starts with Cobra Southeast.


If you’re breaking ground in Atlanta, Savannah, Macon, or anywhere in the Southeast, we’re here to help you see beneath the surface and stay ahead of the game.


Don’t take chances.
Contact Cobra Southeast today to schedule your utility locating services and keep your project moving forward confidently.

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