Trusted Underground Utility Contractor
Monona Underground, a division of Monona Plumbing and Fire Protection, is a trusted underground utility contractor with over 30 years of proven experience. We specialize in the estimation, installation, and repair of underground utility systems of all sizes and complexities, including sanitary sewer, storm sewer, and watermain infrastructure.
Our experienced project managers, estimators, and field crews deliver precise, code-compliant solutions tailored to each project's scope and site conditions. From preconstruction planning through final installation, Monona Underground provides reliable, efficient, and cost-effective utility construction services for municipal, commercial, industrial, and residential clients throughout Wisconsin.
We maintain a comprehensive fleet of light- and heavy-duty equipment—including excavators, dozers, loaders, and skid steers—allowing us to self-perform critical work, maintain tight schedules, and control quality on every job.
OUR SERVICES
Comprehensive Underground Utility Solutions
Municipal Reconstruction
Reconstruct, replace, and upgrade aging underground utility systems for municipalities and public agencies.
New Developments
Complete underground utility installation for new developments and subdivisions with full system integration.
Site Utilities
Installation of sanitary sewer, storm sewer, water main systems, and aggregate grading for infrastructure.
Private Repairs
Fast, reliable repairs for residential and commercial underground utility failures and structural damage.
Public Repairs
Municipal-level repairs for collapsed lines, leaking services, and storm sewer pipe failures.
Emergency Services
24/7 emergency response team for critical underground utility situations requiring immediate attention.
Full-Spectrum Underground Utility Capabilities
From municipal reconstruction projects to emergency repairs, Monona Underground delivers complete underground utility solutions. Our comprehensive service offerings cover all aspects of sanitary sewer, storm sewer, and watermain infrastructure.
Storm sewer system installation and repair
Water main infrastructure installation and repair
Comprehensive Fleet for Every Project
Monona Underground maintains a comprehensive fleet of light- and heavy-duty equipment, allowing us to self-perform critical work, maintain tight schedules, and control quality on every job. Our equipment capabilities ensure we can handle projects of any size and complexity.
From preconstruction planning through final installation, our experienced team leverages modern equipment and proven construction methods to deliver efficient, cost-effective solutions tailored to your project's specific requirements.