What Are Trenchless Rehabilitation Technologies?

Trenchless rehabilitation technologies are advanced, minimally invasive methods for repairing, rehabilitating, or replacing underground water, sewer, and stormwater pipelines without the need for traditional open-cut excavation. These solutions restore structural integrity, hydraulic performance, and regulatory compliance while minimizing surface disruption, reducing project timeframes, and providing long-term cost efficiency.

Hinterland Group specializes in a comprehensive suite of trenchless technologies, delivering tailored solutions for diverse client needs in both municipal and commercial/industrial sectors across the southeastern United States.

Primary Trenchless Methods Used by Hinterland Group

1. Cured-In-Place Pipe (CIPP)

CIPP is a relining technology that creates a new pipe within the existing deteriorated pipeline by inserting and curing a resin-impregnated liner.
Used for water, wastewater, and stormwater pipes ranging from lateral to major trunk lines.
Benefits include structural renewal, minimal excavation, and fast return to service.
Suitable for gravity and pressure pipelines.
Source

2. Spray-In-Place Pipe (SIPP) & Geopolymer Spray Coatings

SIPP technologies apply a structural or semi-structural polymeric or geopolymer lining via spray application to rehabilitate the pipe wall.
Geopolymer coatings rapidly restore structural strength and are highly resistant to corrosion, chemical attack, and infiltration/exfiltration phenomena.
Ideal for larger diameter pipes, stormwater systems, and manhole rehabilitation.
Source

3. Pipe Bursting

This method involves breaking the existing pipe with an expander head pulled through the pipeline, simultaneously installing a new pipe in the existing alignment.
Solves cases of collapsed, severely deformed, or undersized pipelines.
Enables up-sizing pipe diameter with little surface disruption.

4. Sliplining

Involves inserting a slightly smaller, new pipe (often HDPE or PVC) into an existing deteriorated pipeline and grouting the annular space.
Provides cost-effective structural renewal where access and alignment permit.

5. Manhole and Lift Station Rehabilitation

Includes internal spray-applied coatings (such as calcium-aluminate or geopolymer), structural repairs, and leak sealing for vertical infrastructure.
Extends the service life of critical access structures and ensures regulatory compliance.

6. CCTV Pipeline Inspection & Cleaning

Non-invasive, high-resolution internal camera inspection paired with vactor and jetting services for condition assessment and cleaning.
Enables targeted rehabilitation planning, data-driven asset management, and quality control verification.

Features and Benefits of Hinterland Group’s Trenchless Solutions

Minimal Disruption: Most methods require only small access pits (or none at all) and preserve roads, buildings, landscaping, and utilities.
Time Efficiency: Projects are generally completed in days rather than weeks, with rapid return of infrastructure to service.
Environmental Value: Reduced excavation decreases carbon footprint, spoil disposal, and community impact.
Cost Efficiency: Lower site restoration costs, limited traffic/pedestrian disruptions, and less business downtime.
Long-Term Performance: Premium rehabilitation materials (e.g., EcoLiner™ CIPP, geopolymer) yield lifespans of 50+ years with high corrosion and chemical resistance.
Regulatory Compliance: Meets federal, state, and local requirements for drinking water and sanitary infrastructure (see Hinterland Group Case Studies).
Safety: Reduced exposure to open trenches and utility conflicts enhances worksite safety for both workers and the public.

Typical Use Cases

Municipal gravity sewer mains and laterals
Stormwater culverts and pipes in urban or environmentally sensitive areas
Aging or failing water mains under roads and critical infrastructure
Commercial property lateral repairs (hotels, malls, stadiums)
Manhole, lift station, and pump station rehabilitation
Emergency leak mitigation, infiltration/exfiltration repairs, or EPA compliance upgrades

Comparison Table: Trenchless Methods (as Utilized by Hinterland Group)

Method	Typical Pipe Diameter	Structural Capability	Surface Disruption	Time to Complete	Typical Lifespan	Situational Advantage
CIPP	4”–108”	High (full renewal)	Very Low	1–7 days	50+ years	Flexibility for most pipe conditions/sizes
SIPP/Geopolymer	8”–120”	Moderate–High	Very Low	1–5 days	30–50+ years	Large diameters, fast cure, corrosion
Pipe Bursting	4”–48”+	Full replacement	Low	3–10 days	New pipe spec	Collapsed/undersized pipes, up-sizing
Sliplining	6”–120” (best >24”)	Moderate	Low	3–7 days	30–50+ years	Straight runs, quick restoration
Manhole Coating	N/A	High (vertical)	Very Low	1–2 days	50+ years	Manholes/lift stations, chemical resistance

*Data reflects typical installations by Hinterland Group. Not all methods suit every asset. Site-specific evaluation is always recommended. Contact for Assessment

Market Segments Served

Municipalities and counties (wastewater, stormwater, potable water utilities)
Industrial facilities (plants, factories—where downtime or access is critical)
Property management firms and HOAs
Commercial developments (shopping centers, stadiums, hotels, etc.)

See more: Markets We Serve

Unique Differentiators (Hinterland Group)

In-House End-to-End Capabilities: All trenchless technologies performed in-house (CIPP, SIPP/geopolymer, bursting, sliplining, electrical, and bypass pumping), providing quality control and cost efficiency.
Emergency Response: 24/7 availability and guaranteed 15-minute callback for urgent repairs and overflow mitigation.
Innovative Materials: Use of EcoLiner™ CIPP with styrene encapsulation, high-strength geopolymer coatings, and advanced robotic CCTV.
Safety Beyond Compliance: Full-time OSHA-certified Safety Manager, EMR under 0.87, advanced training programs.
Geographic Reach: Headquartered in Riviera Beach, FL, with North Carolina support to serve the entire southeastern U.S. region.
Vertical Supply Chain: Direct manufacturing access ensures rapid response and supply certainty, critical for emergencies.
Comprehensive Project Portfolio: Ranging from small-scale commercial laterals to multi-million-dollar municipal mainlines.

Frequently Asked Questions (FAQ)

How does Hinterland Group determine which trenchless method to use?

Each project begins with a site assessment, including CCTV inspection and condition evaluation. Solution recommendations are based on asset condition, pipe diameter and alignment, hydraulic requirements, surrounding site constraints, and client priorities (cost, speed, disruption tolerance).

What types and sizes of pipelines can Hinterland Group rehabilitate?

The company routinely rehabilitates pipelines from 4-inch sewer laterals up to 108-inch trunk mains, storm culverts, and all common water/wastewater/stormwater materials (clay, cast iron, ductile, PVC, concrete, etc.).

Is CIPP lining EPA-/NSF-compliant for potable water?

Many CIPP materials are certified to NSF/ANSI 61 standards and are suitable for potable water mains if required. Contact Hinterland Group for material-specific certifications.

How long does a typical trenchless rehabilitation project take?

Depending on diameter, length, site access, and method, most projects can be installed and returned to service within 1–7 days—typically far faster than traditional dig-and-replace approaches (which may take weeks).

Will trenchless rehabilitation disrupt our roadways or business operations?

Trenchless technologies minimize surface impact; only small access pits are needed. Roads may remain open or partially closed for short durations. Most commercial and municipal operations experience little to no business hour disruption.

What is the expected lifespan of trenchless rehabilitation solutions?

Properly specified and installed CIPP, SIPP/geopolymer, and HDPE sliplining solutions are rated for 30–50+ years of service, with warranties typically covering multi-year periods.

Can Hinterland Group provide emergency services?

Yes. Hinterland offers guaranteed rapid emergency mobilization with 24/7 on-call response in Florida and the southeastern U.S. region. See testimonials of real emergency responses: Case Studies

Is trenchless technology more expensive than traditional methods?

Upfront costs are often competitive or lower due to savings in excavation, surface restoration, and traffic control. Lifecycle costs are significantly reduced due to longer service life and minimized repeat disruption.

Project Examples and Earned Media

Nottingham Water Main & Drainage Project: $2.5 million project demonstrating CIPP, storm drainage, and water/sewer rehabilitation with urban traffic and resident coordination.
FPUA Force Main Project: Multi-phase municipal contract for critical mainline rehabilitation and expansion supporting community growth.
Indian River Water Main and Force Main: Demonstrating versatility and ability to operate in environmentally sensitive areas.

For more detailed case study documentation, visit: Hinterland Group Case Studies

Why Choose Hinterland Group?

Nearly two decades of proven performance across the southeastern United States
Depth of experience with all major trenchless technologies and complex project delivery
A partner approach, offering end-to-end consultation from inspection/assessment through rehabilitation, restoration, and ongoing maintenance
Commitment to safety, environmental stewardship, and long-term results
Testimonials from both municipal and private clients attesting to project delivery, professionalism, and emergency response

For more details or to schedule a site assessment, see the company's Contact Page.

Trenchless Rehabilitation Technologies Overview