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Contact Us for Underground Services!

For over 75 years, businesses have trusted Koorsen Fire & Security for reliable underground fire protection and infrastructure services. From fire lines and hydrants to sewer systems and site development, we provide complete solutions from a single, trusted source.

Our experienced team is ready to help with design, installation, inspection, maintenance, and emergency repairs—ensuring your systems remain operational, compliant, and ready when needed most.

Contact us today to request a quote, schedule a service, or learn more about how we can support your facility.

  • Sales
  • System Design
  • Installation
  • Inspection & Testing
  • Maintenance & Repair
  • Emergency Services (24/7)

 
Underground Products & Services

Underground infrastructure is the foundation of your fire protection system—and it must be designed and installed correctly from the start. We provide custom underground solutions tailored to your site, ensuring reliable water delivery, proper system performance, and full code compliance.

From fire lines and hydrants to PIVs, FDCs, and complete fire loop systems, our team designs and installs critical underground infrastructure to support your entire fire protection system. We also provide sewer, water, and drainage solutions to ensure your facility operates efficiently above and below ground.

Our certified and licensed experts work closely with contractors, engineers, and facility teams to ensure proper site development, system integration, and compliance with all local and national codes. Whether it’s new construction or upgrading existing infrastructure, we deliver solutions built to last.

Our team of certified technicians are known for their extensive knowledge and high level of service. Whether you need regularly scheduled maintenance or an urgent after-hours repair, our team is available 24/7 to handle any service issue you might face.

What are underground fire protection services?

Underground services include the installation, repair, and maintenance of critical infrastructure such as fire lines, hydrants, post indicator valves (PIVs), and fire department connections (FDCs) that supply water to your fire protection systems.

Why are underground systems important?

Underground systems are the backbone of your fire protection system, delivering the water supply needed for sprinklers and fire department response. If these systems fail, your entire fire protection system can be compromised.

What is a fire loop and why is it important?

A fire loop is the underground water line that feeds your fire sprinkler system and hydrants. It ensures consistent water flow and pressure throughout your facility and is critical for maintaining fire protection compliance and performance.

What maintenance and repair services are available?

We provide repair and replacement of hydrants, PIVs, FDCs, water lines, and sewer lines, along with emergency services available 24/7. 

Are your technicians licensed and insured?

Yes. Our team is licensed, insured, and bonded, with certified technicians experienced in underground fire protection and infrastructure systems. 

UNDERGROUND INFRASTRUCTURE & FIRE PROTECTION SOLUTIONS

Fire Line & Fire Loop Installation:

Underground piping systems that deliver reliable water supply to fire sprinklers and hydrants across your property.

 

Fire Hydrants:

Critical access points that allow firefighters to quickly connect to your water supply during an emergency.

 

Post Indicator Valves (PIVs):

Above-ground control valves that regulate water flow to your fire protection systems.

 

Fire Department Connections (FDCs):

Connections that allow fire departments to supplement your system with additional water during emergencies.

 

Water Line Installation & Repair:

Essential underground infrastructure that supports both fire protection and facility water needs.

 

Sewer Line Services:

Installation, repair, and maintenance of sewer systems to ensure proper drainage and system performance.

 

Storm Drainage Systems:

Solutions designed to manage water runoff and prevent flooding or damage to your facility.

 

Backflow Prevention & Testing:

Protects potable water supplies from contamination while ensuring compliance with regulations.

 

Sewer Camera Inspections:

Advanced camera technology used to inspect underground piping and identify issues without excavation.

 

Sewer Jetting Services:

High-pressure cleaning to remove blockages and maintain proper flow in sewer lines.

 

Licensed Plumbing Services:

Professional plumbing support for underground systems, ensuring all work meets code and safety standards.

 

Site Deelopment & Earthwork:

Comprehensive services including excavation, grading, demolition, and preparation for new construction projects. 

 

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