Site Utilities
Underground Infrastructure You Can Build On.
At SWI Excavating, we don’t just install utilities—we power the systems that make modern communities function. From commercial water and sewer mains to storm drainage and detention systems, our Site Utilities services are built on precision, safety, and long-term performance.
Backed by cutting-edge technology and a deeply experienced team, we help general contractors and developers complete complex underground infrastructure projects—on time, on budget, and to the highest standards.
Services that we offer include
but are not limited to:
Water Infrastructure Installation & Repair
- Commercial water mains
- Fire hydrants and fire lines
- Domestic water service lines
- Backflow prevention and vaults
We ensure every water system we install is code-compliant, pressure-tested, and built to last, delivering reliable access and flow to commercial, industrial, and multi-use developments.
Stormwater Infrastructure
- Storm mains and drain lines
- Manholes and inlets
- Underground detention systems
- Water quality and filtration components
Our storm system work is designed to protect properties, manage runoff, and prevent flooding—with precise grading and planning that supports both performance and regulatory compliance.
Sanitary Sewer Systems
- Sewer mains and lateral lines
- Manholes and access points
- Connection to municipal systems
- Emergency sewer repair and upgrades
We install and repair sewer infrastructure with a sharp eye on flow efficiency, safety, and long-term maintenance access—supporting everything from new builds to major utility upgrades.
Some of Our Projects
Below is a photo gallery showcasing the various excavation projects that we have done recently. Even if you have a job that isn't shown in the projects gallery below don't hesitate to call us.
Technology-Forward Utility Installation
SWI Excavating integrates GPS technology, digital modeling, and drone-based site analysis to deliver more accurate, efficient, and traceable utility installations. This allows us to:
- Minimize conflicts with other site systems
- Ensure correct pipe grades and alignments
- Reduce inspection issues and rework
- Keep your schedule moving with fewer surprises
Our data-driven approach makes us a trusted partner for tight-timeline, high-stakes commercial projects.
Why Companies Choose SWI
Over 25 Years Of Experience In site Work and Underground Utilities
Experience Working With Many Tier 1 Building Companies
Fully Licensed And Compliant With Govt. Regulations
Why Choose SWI for Site Utilities?
- Full-service capabilities to manage all phases of your underground utility scope
- Experienced crews trained to handle challenging terrain, depths, and site constraints
- Strict safety protocols and compliance with all local, state, and federal regulations
- Responsive communication with GC teams, inspectors, and municipalities
- Smart scheduling and execution that keeps your project on track
We’ve been building Colorado’s underground infrastructure since 1997—and we bring that experience to every trench, connection, and cross.
Testimonials From
Our Satisfied Clients
‘’SWI is a quality company to be in a trade partnership with. Alex and his crew are great to work with on a day to day basis. With over 20+ years in the industry, I can say they are worth every minute of knowing SWI.’’
Vincent L
February 28, 2023
‘’I highly recommend working with SWI Excavating. This business is ran very professionally and they take great pride in the work that they do.’’
Connor Dugan
February 28, 2023
‘’Bedrock, LLC and On-Demand Concrete, LLC have been doing business with SWI Excavating for a few years now and it has always been a pleasant experience through and through!’’
Bedrock Slingers
February 28, 2023
‘’I have nothing but the best to say about SWI! Quickness to respond, attention to detail, and quality of service are unmatched. You can also tell the owner carries a lot of pride in the business and it’s employees. Their ability shows in their work and their work is excellent! 10/10 recommend.’’
Sydney
February 28, 2022
"SWI is a quality company to be in a trade partnership with. Alex and his crew are great to work with on a day to day basis. With over 20+ years in the industry, I can say they are worth every minute of knowing SWI."
Vincent L
February 28, 2023
"Extremely professional. Was able to keep constant communication with us while keep a faster pace than expected"
Blake Strickland
February 28, 2023
Let’s Get Your Project Connected
From new commercial developments to infrastructure rehabs, SWI Excavating delivers professional-grade utility solutions for builders who demand results.
Serving Colorado since 1997
Call us today: 303-XCAVATE
Get in touch: info@swiexcavating.com