EM and GPR locating in King of Prussia, West Point, Collegeville, Horsham and across Montgomery County.
Trinity Subsurface locates private underground utilities for contractors, engineers and facility owners across Montgomery County, from King of Prussia and Plymouth Meeting to Collegeville, Lansdale, Horsham and Pottstown. Our technicians find the electric, water, gas, storm, sewer and communication lines that PA One Call does not mark, using electromagnetic (EM) equipment and ground penetrating radar (GPR), mark them in paint and flags, and deliver a field sketch within 24 hours.
PA One Call (811) notifies utility owners, but they mark only their own lines, usually up to the meter or property line. Montgomery County's pharmaceutical and life-science campuses, corporate parks along the Route 202 and Turnpike corridors, and expanding hospital and school sites are full of private infrastructure beyond that point: process and fire lines, site lighting, duct banks between buildings and decades of abandoned services. They are private, and only a private locator will mark them.
Our team relies on a variety of technologies and methods to fully examine your site. We use electromagnetic scanning, ground penetrating radar and more to get the best info on subsurface utilities and underground infrastructure.
Our team offers multiple services to support your projects on top of utility locating and concrete scanning. Ask us about additional utility investigation services we can offer for further support beyond GPR locating and scanning.
We aim to provide ongoing support for your current and upcoming projects. Whether you're just starting design or running into unexpected utilities during construction, we'll investigate and assist with any step of your project.
No. Utility owners mark their own facilities, usually up to the meter or property line. Lines past that point, which are common on campuses and business parks, belong to the property owner and need a private locator.
Most requests are on site within three business days, often sooner. Call (610) 492-6262 and the scheduling team will tell you what is possible.
All of Montgomery County, including King of Prussia, West Point, Collegeville, Lansdale, Horsham, Plymouth Meeting, Conshohocken, Blue Bell and Pottstown, plus neighboring Chester, Bucks and Delaware counties.
Rated 4.9 out of 5 from 223 Google reviews.
“Their quote was provided promptly, and the technician was punctual, professional, and well-prepared. The work was clearly explained throughout the process.”
Frank B., Google review
“Trinity crew did a thorough job. Great field guys.”
John O., Google review
“Third time working with Trinity. Expertise, determination to find the problem and solution, resulting project summaries all outstanding. Highly recommend Trinity!”
Nancy T., Google review
