Tri-State Utilities

Supporting the Maintenance Needs of Municipalities

About This Brand

Founded in 1990, National Underground Group’s Tri-State Utilities division provides pipeline rehabilitation of sewers and storm drains using trenchless pipelining technologies, including the cured-in-place-pipe (CIPP) process and other industry-leading technologies.

Tri-State clients include municipalities, federal agencies and their partner engineers, and general contractors. Additional Tri-State services include pipe cleaning, CCTV inspection, smoke and dye testing, grouting and HDPE sliplining. Tri-State Utilities is located in Chesapeake, VA with a branch office outside of Charlotte in Denver, NC.

The company’s field workers bring years of experience and industry knowledge to each job, allowing Tri-State to deliver high-quality results to customers each day. Maintaining quality control from planning through wet-out and field installation is Tri-State’s goal.


Our Services

CIPP Lining — The trenchless cured-in-place-pipe (CIPP) lining method provides long-term solutions for rehabilitation of aging sanitary sewers, storm sewers and culverts, and water and industrial pipes. CIPP is a jointless material that molds to the host pipe, prevents infiltration and exfiltration, and restores structural integrity.

No-Dig Point Repair Systems — Sectional liner repairs provide a structural repair by lining only the areas that require repairs — without excavating the existing pipe or lining the entire pipe. Repairs are performed quickly; multiple liners can be installed in a single day.

Glass Reinforced Pipe — This method uses a thermosetting, resin-impregnated flexible tube that is inflated and cured with hot water or steam to completely reline sanitary sewer and stormwater pipes and culverts.

High-Performance Cleaning — Tri-State employs state-of-the-art Vactor combination sewer cleaners that use high-pressure water to scour the pipes and a powerful vacuum to remove the debris.

Mechanical Spot Repair — Tri-State Utilities offers municipalities an economical way to maintain sewer systems by re-lining rather than replacing entire sections of pipe.

CCTV Sewer Inspection — Tri-State utilizes the latest technology  during all CCTV inspections to provide an accurate assessment of the pipe or storm drain condition.

Continuous Fused Sliplining — Traditional HDPE sliplining can be the most cost-effective and efficient rehabilitation method available for large-diameter pipe, depending on the requirements.

Sectional Liners — The PipePatch® point repair system lines only the areas that require repairs. Without digging the pipe or lining the entire pipe, this method saves on material costs and man-hours vs. excavation.

SSES Field Services — Tri-State Utilities offers the following Sanitary Sewer Evaluation Survey (SSES) field services to engineering firms and municipalities: pipe cleaning and CCTV inspection; mainline, manhole and lateral inspection; laser profiling and digital scanning; and smoke and dye testing. Services are PACP/MACP/LACP-certified by the National Association of Sewer Service Companies (NASSCO).

Our Location
2111 Smith Avenue
Chesapeake, VA 23320
Phone: 757-366-9505

3547 Denver Drive
Denver, NC 28037