Washington's preferred Private Utility Locators

Rapid Response - Nationwide Service

With over 300 Project Managers, strategically stationed in every major market and city across the United States, GPRS has an unmatched nationwide service network that makes it quick and easy to find an expert Project Manager in any potential customer’s area. GPRS ensures they can reach your location within 24 to 48 hours of contact to solve all and any of your utility locating needs. Contact GPRS for information, pricing and scheduling needs.





Private Utility Locating in Washington

GPRS’ private utility locating services are meant to give your excavation team a detailed picture of what utility lines lie beneath the surface of your job site. To ensure the overall timely success of the job, utility detection is critical to any construction project where subsurface excavation is planned. If ignored, budget overruns multiply, your schedule turns chaotic and there’s risk of injuries taking place on your job site. The standard is one-call (811) utility locating, a state-sponsored public service that is required for every project. However, the scope of this service is limited to areas that only serve the public’s interest.

To achieve the complete success you're looking for, you’ll want to connect with an expert private service provider like GPRS.

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Video Pipe Inspection Services

Washington’s Best Private Utility Locators

Before you start a construction project or any other project that requires subsurface excavation, you need some information first. Calling 811 to mark public utilities is a necessary first step, but it's not the end of the job. You'll need to know about any private utilities on your job site as well.

That's where GPRS comes in. We are the nation's largest underground utility locating company, specializing in underground utility detection, video pipe inspection, and concrete scanning. Our nationwide network of professionals allows us to serve major markets in all 50 states, providing extremely accurate data and top-notch customer service.

About GPRS: A Natural Locator in Pursuit of 100% Subsurface Damage Prevention

GPRS was founded in 2001 as one of the first companies in the country to specialize in utility detection and concrete scanning. We've spent the past two decades honing our skills and keeping up-to-date with the latest technology in order to deliver the best private utility locating services in Washington, along with the other 49 states. We’ve also expanded our services to include video pipe inspection and 3D laser scanning.

We have a network of over 300 experienced, professional project managers located in every major market and city in the United States. When you call GPRS, you'll be connected with a GPRS project manager providing private utility locating services near you. Our large service network allows us to send someone to your location quickly, typically within 24-48 hours.


  • Water Lines
  • Gas Lines
  • Sanitary Sewers
  • Storm Sewers
  • Electrical Lines
  • Communication Lines
  • Irrigation Lines
  • Unknown Or Abandoned Pipes
  • Underground Storage Tanks

Subsurface Private Utility Locating Services: A Necessary Step Before You Dig

The first step before starting any project involving digging is to call the national “call before you dig” number, 811. 811 will take your information, including the exact location of your project, then contact local utility companies that may have subsurface infrastructure in that area. The utility companies themselves will send a representative out to mark those lines.

The potential problem lies in the fact that the utility companies mark where they know their lines to be, rather than scanning to see what’s underground. As such, they will not be able to provide any information on private utilities that may be under the surface in your project location. This is where a private utility locating company near you can help.

What Happens if I Don’t Locate Private Utilities?: Injuries, Delays, and Budget Overruns

It's never a good idea to go into a subsurface excavation project without a clear and comprehensive understanding of what to expect when you break ground. Most line strikes occur due to a lack of proper ground disturbance policies and dig permits or failure to locate all underground utilities, such as water, storm, sewer, and electric lines before beginning. Locating gas lines, water lines, underground storage tanks, cables, and more is crucial to the safety of your crew. Line strikes have a wide range of potential consequences, from severe injuries to costly project delays. Damage prevention and safety should always be the top priority on a dig site.

GPRS: The Best Private Utility Locating Company in Washington

When you're looking for the best professional private utility locators near you, look no further than GPRS. We were one of the first companies in the country to specialize in concrete scanning and underground utility detection, and we’ve been ahead of the curve ever since. We’ve become leaders in leak detection, 3D laser scanning, and video pipe inspection along the way. Since 2001, we've been leading the industry with excellent customer service, an ever-expanding network of service professionals, and pinpoint accuracy. We're always keeping an eye out for new methods and the latest equipment to help us continuously improve on the results we deliver.

One of those improvements in recent years has been the implementation of the Subsurface Investigation Methodology, or SIM. We performed over 72,000 jobs using SIM in 2019 and were able to achieve a 99.8% accuracy rate in part thanks to its implementation.

We keep our standards high. Every GPRS project manager must complete an extensive training program through our very own training center, with a full-time training and safety director on staff. After the completion of this program, project managers work on an average of 300 jobs per year. We have worked on some of the largest and most significant construction projects in the country and are committed to accuracy and safety at all times.

Contact us today to speak with a project manager about the private utility locating services near you in Washington.




GPRS of Washington

Ground Penetrating Radar Systems LLC, is the nation’s largest company specializing in the detection of underground utilities, video pipe inspection, and the scanning of concrete structures. GPRS has an extensive nationwide network of highly trained and experienced project managers in every major U.S. market.

When clients hire GPRS, they have the peace of mind of knowing that they have the most reliable scanning technology on their job site and they'll receive the assistance of a project manager who can provide them with the most accurate data. For over a decade, GPRS has been the industry leader by providing outstanding service and cutting edge technology, keeping projects on time, reducing safety risks, and putting our relationships with our clients before profit.



Subsurface Investigation in Washington

It goes without saying that the construction industry can improve in damage prevention. The main culprit of line strikes is the lack of proper ground disturbance policies and dig permits. Here at GPRS, we believe that the construction industry can get closer to achieving 100% subsurface damage prevention by implementing the Subsurface Investigation Methodology Specification or SIM. In 2019, GPRS saw an accuracy rate of over 99.8% on 72,000 concrete scanning and utility locating projects while using the SIM process. While this leads the locating industry, we are still not satisfied with these amazing results.

We will continue to pursue all avenues of technology, training and methodology in order to deliver this goal of safety for our clients. GPRS is in pursuit of 100% subsurface damage prevention, will you join us?


When deciding who to hire for utility location, concrete scanning, 3D laser scanning and video pipe inspection, why not hire the top rated and best? Unlike countless companies that offer multiple services, at Ground Penetrating Radar Systems, we focus on a single task. That is our sole focus! We specialize in utility locating and our experience and expertise is second to none!

Safety and quality is our main focus, so much so, that we built our own training center where every GPRS project manager is required to complete an extensive training program before they can perform field services on your job site. Our staff includes a full time training and safety director to make sure all of our project managers are skilled in operating our equipment with high levels of competence and confidence, while always being diligent about performing our duties safely.

GPRS was one of the first companies in the country to focus on concrete scanning and utility locating, primarily using ground penetrating radar (GPR). Since we started in September, 2001, we have built a nationwide network of offices with staff strategically placed in every major metropolitan area in the United States. Since our founding, we have worked on some of the largest and most significant construction projects in the country. We stay busy: On average, each of our project managers perform 300 jobs per year.

We are the best at what we do because it is all we do. When you are faced with the need to know what lies below the surface.

Contact the nation’s best utility and concrete scanning company. Your project’s success could depend on it!


GPRS provides private utility locating, leak detection, CCTV video pipe inspection, and concrete scanning throughout the state of Pennsylvania. GPRS provides subsurface obstruction location and analysis to keep construction and excavation projects on time, on budget, and safe. Prevent subsurface damage and avoid striking gas communication, water, sewer, or electrical lines. Schedule a project with us today!

Concrete Imaging Technology Utilized To Locate Reinforcing Steel And Conduit Prior To Core Drilling – Washington

A large construction company had a project in West Seattle building a new apartment and retail complex. There was a need to install new floor outlets throughout the building, which meant concrete sawing and coring was needed. Prior to beginning the sawing and drilling processes, the contractor contacted Ground Penetrating Radar Systems of Washington (Portland) to scan the floors to locate the reinforcing steel and any conduit present.

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GPRS Allowed Contractors To Avoid Damaging Structural Reinforcement

A General Contractor had a project within a parking garage. The scope of the project was to perform core drillings in multiple locations for placement of conduits. The drillers did not want to hit any rebar/reinforcement in accordance with the project’s requirements. Tensioned cables were present within slab so it was imperative for drillers to avoid the mentioned reinforcement.

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CCTV Robotic Crawler System Waste Water

A valued customer was having flow issues within their waste pipes and was not sure exactly where the issue was occurring. The customer hired our CCTV camera inspection services department to use the robotic crawler camera system to determine where the issue was. The NASCCO certified project manager was able to access both ends of the pipe and determine at what linear footage there was an issue.

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