services detail

Vacuum Excavation

At Windsor Underground, we deliver professional dry utility construction services tailored to meet the demands of Arizona’s growing infrastructure. Whether it’s trenching, boring, locating, or street lighting, each service is performed with safety, precision, and strict compliance to utility and municipal standards. With decades of combined experience, our team is trusted by general contractors, developers, and municipalities to execute underground utility work on time and without compromise.

Precision Excavation Without The Risk

Hydro vacuum excavation—also referred to as potholing, daylighting, or soft digging—is a non-destructive method that uses pressurized water to loosen soil while a high-powered vacuum removes the slurry from the excavation site. This controlled process allows for the precise exposure of underground utilities such as gas lines, electric conduits, telecommunications cables, and fiber optics without the risk of accidental strikes that often accompany traditional mechanical digging. It is especially useful in congested utility corridors, urban environments, and locations where as-built drawings may be outdated or incomplete. By reducing the chance of utility damage and injury, hydro vac excavation improves jobsite safety and regulatory compliance while keeping projects on schedule.

At Windsor Underground, we incorporate hydro vacuum excavation into both pre-construction assessments and active jobsite operations to support safe, accurate, and efficient utility work. Our trained field crews perform potholing to verify utility depths and locations prior to trenching, horizontal directional drilling (HDD), or conduit installation, significantly reducing the likelihood of costly service disruptions or construction delays. We work closely with utility companies, general contractors, and municipalities to ensure each excavation complies with Arizona 811 standards and all applicable codes. Whether you’re preparing for large-scale infrastructure work or need to safely expose utilities for inspection, our hydro vac services provide the assurance needed to proceed confidently and responsibly.

Why Hydro Vac Matters In Dry Utility Construction

Traditional excavation methods can inadvertently damage critical infrastructure. With hydro excavation, we eliminate that risk. The process is non-invasive, accurate, and fully compliant with Arizona 811 regulations and utility provider requirements—making it ideal for urban projects, tight access areas, and sensitive utility zones.

Safe exposure of gas, power, and telecom lines
Vacuum debris removal for clear visibility
Ideal for congested utility corridors
Non-invasive and compliant with Arizona 811
Supports trenching and HDD operations
Real-time verification of utility maps

Real Results, Safer Projects

Hydro vacuum excavation has become an industry standard for utility verification and protection. Windsor Underground delivers clean, safe potholes that eliminate the guesswork and reduce risk across all job types. Our approach ensures that contractors can move forward with trenching, boring, or construction activities with full confidence in what lies beneath. This not only improves safety outcomes but also enhances project efficiency by minimizing unexpected delays and utility conflicts.

Pre-Bore Potholing Gas Main Exposure for Tie-In Municipal Potholing

Before performing horizontal directional drilling (HDD), Windsor Underground exposed critical fiber and electric lines using hydro vacuum excavation. This process allowed for precise identification of utility locations in a tight-access area, ensuring telecom infrastructure was not compromised during bore operations. Our team established clearly marked verification zones, reducing the risk of line strikes and keeping the project compliant and on schedule.

  • Telecom risk mitigation

  • Safe verification zones

  • Tight access excavation

To prepare for a gas line connection, our crew executed a non-destructive hydro vac trench around an existing Southwest Gas main. The excavation ensured full visibility of the line while adhering to utility compliance standards. Spot checks were conducted to confirm connection accuracy, and the use of water excavation with vacuum support minimized ground disturbance and safety risks.

  • Southwest Gas compliance

  • Water excavation with vacuum support

  • Spot checks for connection accuracy

In support of a city infrastructure project, Windsor Underground conducted hydro vacuum potholing to expose existing utilities for permitting documentation. This was a requirement for Department of Transportation (DOT) review and approval. Our team performed the work with minimal traffic disruption, utilizing a vacuum truck and water trailer setup to efficiently expose and document utility depths and alignment.

  • Documentation for DOT permitting

  • Minimal traffic disruption

  • Vacuum truck and water trailer mobilized

What We Deliver In Hydro Excavation

Pressurized water and vacuum excavation
Clean, precise potholes for utility checks
Safe trenching support in active utility corridors
Real-time service with documentation
Compliance with local permitting & codes
Ideal for daylighting, verification & sensitive zones

Our Process For Potholing & Hydro Vac

Our soft digging services are built around safety, speed, and utility preservation. We assess jobsite needs, select proper excavation locations, and deliver documentation ready for utility inspections or DOT permitting. Each potholing task is carefully planned in coordination with utility maps and field markings to ensure precision. By minimizing surface disruption and eliminating unnecessary excavation, our process keeps your site clean, compliant, and ready for the next phase of construction.

Locate & Mark Utilities

Soft Dig & Vacuum

Document & Verify

No surprises. No strikes. Just verified safe digging zones.

Hydro Excavation FAQ

What is hydro vacuum excavation?
It’s a non-destructive method that uses pressurized water and suction to expose underground utilities safely.
When is potholing required?
Often before trenching, boring, or heavy digging in areas with existing utilities. It’s a critical step in urban and public projects.
How deep can you excavate with hydro vac?
We can safely reach depths of 10+ feet depending on soil type and project needs.
Is this approved by utility providers?
Yes. Hydro vac is widely accepted by APS, SRP, Southwest Gas, and municipalities as the preferred method for safe utility exposure.

why choose us

Turnkey Dry Utility Solutions
Trusted by Top Contractors in AZ
Licensed & ROC-Certified
Responsive & On-Time Execution
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839 W. Happy Valley Rd.
Phoenix, AZ 85085

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5:00AM – 5:00PM