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National Underground Group Employee Directory

ConstructionCalifornia, United States51-200 Employees

National Underground Group is a construction-focused company dedicated to underground infrastructure. With roots dating back to 1947, it provides a full spectrum of services to maintain and upgrade underground networks and operates through a family of specialized brands including Pro-Pipe, Tri-State Utilities, Accumark, Pipe Vision, and Benchmark. Based in Irvine, California, the company serves municipalities, utilities, government agencies, construction firms, and engineering practices across the United States. It positions itself as an integrated solutions provider for planning, installation, maintenance, and modernization of underground systems. These activities place the company within the broader underground construction sector, serving a diverse set of public and private sector clients.

Find National Underground Group employees' phone numbers or email addresses

National Underground Group Global Highlights

Location
Employees

North America
62

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  • United States Of America
    62

Europe
3

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  • United Kingdom Of Great Britain And Northern Ireland
    2
  • Germany
    1

National Underground Group's Leadership

  • Vice President And General Manager at National Underground Group
    Z. L.
    Vice President And General Manager
    Mobile Phone
  • Small Business Owner at National Underground Group
    C. M.
    Small Business Owner
    Mobile Phone
  • Owner-Operator at National Underground Group
    N. M.
    Owner-Operator
    Mobile Phone
  • Branch Manager, Proffesional Pipe Services at National Underground Group
    K. B.
    Branch Manager, Proffesional Pipe Services
    Mobile Phone
  • Branch Manager, Proffesional Pipe Services at National Underground Group
    J. F.
    Branch Manager, Proffesional Pipe Services
    Mobile Phone
  • Branch Manager at National Underground Group
    T. O.
    Branch Manager
    Mobile Phone
  • Human Resources Coordinator at National Underground Group
    A. R.
    Human Resources Coordinator
    Mobile Phone
  • Dispatch Supervisor at National Underground Group
    D. C.
    Dispatch Supervisor
    Mobile Phone

National Underground Group Employee Metrics

100%
50%
0%
2026
2025
  • Program & Project Management
  • Administrative
  • Civil Engineering & Construction
  • Consultant
  • Healthcare Services
  • Other
  • Human Resources
  • Business Development
  • Business

Contact profiles from National Underground Group

Name
Title
Contact
Location
Last Update
  • Customer Service Call Center at National Underground Group
    M. T.
    Customer Service Call Center
    Mobile Phone
    Oct 17, 2024
  • Utilitiy Locator at National Underground Group
    J. I.
    Utilitiy Locator
    Mobile Phone
    May 12, 2026

Frequently Asked Questions

What is National Underground Group known for?

Minus sign iconPlus sign iconNational Underground Group operates in the Construction industry. You can contact National Underground Group's main corporate office by phone at
+1-949-380-****
. Explore National Underground Group's company overview page for more information.

What is National Underground Group's most common email format?

Minus sign iconPlus sign iconNational Underground Group employees' email format typically follows the pattern of First.Last@hswcorp.com. Trying to find reliable and up-to-date employee contact data? Find more National Underground Group email formats with LeadIQ.

How many employees does National Underground Group have currently?

Minus sign iconPlus sign iconNational Underground Group has approximately 52 employees as of August 2026. These team members are located across 2 continents, including North America and Europe.

Who are National Underground Group's key employees and leadership?

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As of August 2026, National Underground Group's key employees include:

  • Vice President And General Manager: Z. L.
  • Small Business Owner: C. M.
  • Owner-Operator: N. M.
  • Branch Manager, Proffesional Pipe Services: K. B.
  • Branch Manager, Proffesional Pipe Services: J. F.

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