Beneath the surface. Above the rest.
Wet Utilities Infrastructure Contractor for Residential, Commercial & Municipal Projects
Available for Properties of Any Size
Apex Underground is a Denver-based premier wet utility firm. Founded in 1985, we’ve grown into an employee-owned (ESOP) leader in sewer, water, storm, and fire suppression projects. Backed by decades of expertise, advanced technology, and unmatched resources, including a five-acre site with its own concrete batch plant, we deliver turnkey solutions with quality, reliability, and innovation. Guided by our core values, we’re shaping Colorado’s infrastructure, one project at a time.
100% EMPLOYEE OWNED
100% COMMITTED TO YOU
Denver's premier underground wet utility infrastructure firm
Our Core Competencies
PROJECT CONTROLS
Apex employs robust scheduling and cost management systems that track daily progress, resource allocation, and budget performance. These tools allow us to maintain alignment with project goals.
QUALITY ASSURANCE
We execute a comprehensive QA/QC program. This program includes pre-construction planning, meticulous inspection and testing protocols, and post-construction evaluations to ensure compliance with regulatory and client standards.
SAFETY EXCELLENCE
Our OSHA-certified team fosters a culture of safety rooted in rigorous training, and proactive hazard identification. We implement comprehensive safety protocols tailored to each project, ensuring a secure environment for workers and the public.
ADVANCED TECHNOLOGY
Our cutting-edge trenchless methods, including Horizontal Directional Drilling (HDD) and pipebursting, minimize surface disruption and require minimal restoration. These technologies preserve existing landscapes and infrastructure while delivering efficient, cost-effective installations.
Projects
Where We Work
Don’t see your city listed? Call us at (303) 215-1348 and we’ll quickly let you know if we service your area.
Turnkey Solutions for any Project
Apex delivers comprehensive, turnkey wet utility solutions from initial design through final completion. Our expertise in managing complex infrastructure projects positions us as the single-source provider for water/wastewater districts, commercial pad site development, and critical emergency repairs—ensuring seamless project delivery and reliable results.