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Penhall Technologies provides utility locating, employing both electromagnetic induction (EMI) and ground penetrating radar (GPR) for privately owned property. We can identify and locate subsurface hazards and obstructions existing in the ground. Reduce the risk and help ensure the safety of your next project by contacting Penhall Technologies for your private utility locating needs.

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I can confirm this is a private locate. For all public locates please contact 811.

Other Service

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What are we scanning? Slab on grade, suspended slab, etc.

What are we scanning for? Ex. rebar, tension cables, conduits, etc.

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What is the surface that we are performing the locate on? Ex. Ground/Dirt, asphalt, concrete, indoor/outdoor, etc.

What are we locating? Water, gas, electrical, sewer, etc.

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Once you submit this form, a Penhall Company representative will contact you within 24 hours. Thank you for the opportunity to earn your business!

Houston Utility Locating Projects that Penhall Worked On

Locate underground electrical lines

Houston utility locatingPenhall Technologies performed a utility locate for a plumbing company. The plumbing company wanted our analyst to show exactly where the electrical lines run relative to the property lines. Our analyst marked out two private power lines running from the building to the transformer. Also, he located the power running from a windmill to the transformer and from the generator to the transformer. The analyst used the RD 7100 to trace out all the private power lines on the property. To complete the project, our client flew a drone over the marks to get an aerial view.

Ground penetrating radar locates private utility lines

An elementary school in Downey, California looked to Penhall Technologies to perform a private utility locate in preparation for utility upgrades.  The customer was going to excavate an area next to the school to reroute sewer, power, and water lines. The client had public utility locating done previously. But, they needed one more area scanned to ensure there weren’t any  lines running through the proposed area of excavation. The client knew of a major water line running right through the middle of the excavation area. The analyst was able to find it and traced the line directly back to the water valve itself. Other objects were also found with GPR and were marked accordingly.


Locate underground septic tank for private residential property

Locate underground septic tank At a private residence in League City, TX, a homeowner needed to locate the septic tank in the property’s pool house. Penhall Technologies was able to find the tank so the customer could repair it and complete everything in time to use their pool for the summer.

Ground penetrating radar used to locate underground water pipes

Use GPR to locate underground PVC pipesA non-profit youth facility called Penhall Technologies to help locate and mark subsurface PVC water lines on their property. Our GPR analysts scanned a of 150 x 100 foot area to locate the lines and help determine if any leaks existed.

Find all utilities underneath concrete slab before saw cutting and trenching

Find all utilities under concrete slab prior to saw cutting and trenchingA chemical plant in Channelview, TX needed to locate and mark all utilities under a concrete slab in preparation for our saw cutting and trenching a 10′ x 10′ x 6″ area. Our analyst used ground penetrating radar to scan a 25′ x 25′ foot area area to ensure that there no utilities would be damaged.

Identify where existing utilities lie before installing a new sprinkler system

locate utilities before installing sprinkler lineA sprinkler system company in Texas asked Penhall Technologies to locate and mark utilities before installing sprinkler lines for a private residence in Pearland. We used GPR to scan approximately 5,000 square feet to help avoid damaging any underground utilities.