Horizontal Directional Drilling In NJ
Horizontal directional drilling is the trenchless method for sewer lines that are past saving. When your line has fully collapsed and no longer offers a way through, HDD doesn't repair the old pipe — it installs a brand-new one on a fresh bore path beneath your yard, with no trench from end to end. It's trenchless sewer line installation in the most literal sense: a new lateral, new material, new grade, without digging up everything between your house and the street.
24/7 Emergency Horizontal Directional Drilling
A fully collapsed sewer line stops your whole house at once. Our team responds to sewer emergencies across New Jersey, confirms on camera whether any route remains through your existing line, and determines whether a new bore path is the answer.
Review our Trenchless Sewer Repair Special
Need Emergency Horizontal Directional Drilling?
Arrow responds 24/7 across New Jersey. If your line has fully collapsed, we’ll confirm it on camera and get a new bore path moving — fast.
NJ Master Plumber License # 36BI01352100
Call (908) 472-3801What Is Horizontal Directional Drilling?
Horizontal directional drilling is a form of trenchless sewer repair that creates an entirely new path for your sewer line. A steerable drill head bores a pilot hole beneath your yard from an entry pit to an exit pit, the bore is widened by back-reaming, and the new pipe is pulled into place along it — continuous, correctly graded, and independent of whatever failed above it.
That independence is what sets HDD apart from every other trenchless method. Lining rebuilds a pipe’s wall and bursting follows a pipe’s path — both need the old line in some usable form. HDD needs nothing from the old pipe at all, which is why it’s the last rung on the trenchless ladder: the method that still works when no other method can. For the full decision on when a new path beats repairing the old one, see our guide to when HDD is the right call.
For utility, water, and conduit installations, HDD work lives with our drilling contractors team — this page covers residential sewer lines.
What HDD Fixes — and What It Can’t
Sewer lines fail in predictable ways, and most failures leave something behind — a wall to rebuild, a path to follow. HDD is the method for failures that leave nothing: when the route itself is gone, the fix is a new one.
HDD is the right method for:
- Fully collapsed lines. A collapsed sewer line offers no passage for a camera, a liner, or a bursting cable — a new bore path is the trenchless answer.
- Pipe crushed by settlement or loads. When soil movement or surface weight has flattened a section beyond passage, the route fails the followable test.
- Orangeburg deformed past cable passage. Softened Orangeburg pipe that has ovaled shut can’t guide a bursting head through — the same followable-route test, failed by deformation.
- Bellies that need a new grade. A sag in the line can’t be fixed by any method that follows the old pipe — but a new bore path is drilled at the correct slope from the start.
- Severed or separated lines. When sections have pulled fully apart, there’s no continuous route left to repair.
HDD is not the method for:
- Pipe with an intact route and a repairable wall. Structural cracks in a passable line call for trenchless pipe lining — a rebuilt wall inside the pipe you have.
- Degraded pipe the cable can still follow. If a route remains, pipe bursting replaces the line along its existing path — a smaller job than boring a new one.
- Surface corrosion and scale. A structurally sound wall that’s corroding needs epoxy pipe lining, not a new pipe.
- A failed tap connection. Where your lateral meets the main is repaired at the connection itself — see sewer lateral connection repair.
Not sure which rung your line is on? Our trenchless method guide walks the full decision, method by method.
Trenchless Repairs for Every Pipe Condition
HDD is the last rung on the trenchless ladder — the method for lines nothing else can save. If your pipe still offers a route or a wall worth rebuilding, one of these related services is the smaller, right-sized fix — every one of them performed in-house by the same Arrow team.
Trenchless Sewer Repair
Trenchless sewer repairs restore damaged underground sewer infrastructure without extensive excavation.
Trenchless Pipe Lining
Rebuilds structurally damaged sewer walls with a cured-in-place liner when the pipe's route is still intact.
Trenchless Pipe Replacement
Pipe bursting replaces severely damaged sewer lines along their existing path — one rung before a new bore.
Epoxy Pipe Lining
Applies a protective epoxy coating inside structurally sound pipes to stop corrosion and seal pinhole leaks.
Sewer Lateral Connection
Repairs failed tap connections where your lateral meets the main — the one point trenchless methods generally can't reach.
Sewer Line Repair
Corrects localized structural damage in underground sewer piping. May use trenchless methods when pipe integrity allows.
Sewer Inspection
Provides interior video evaluation of sewer piping. Identifies cracks, offsets, corrosion, and root intrusion.
What Causes a Sewer Line to Lose Its Route?
The failures that call for a new bore path are the end-stage ones — the point where the everyday stressors working on every buried line stop causing damage and start erasing the pipe:
- Full structural collapse — the pipe wall gives way entirely, closing the line to camera, liner, and cable alike
- Soil settlement and shifting that crushes or shears buried pipe, especially at joints
- Heavy surface loads — driveways, additions, and equipment compressing old lines never built to carry them
- Orangeburg deformation — bituminized fiber softening and ovaling until nothing can pass
- Washout and erosion voids that leave pipe unsupported until it drops or separates
- Decades of unchecked damage — cracks, roots, and corrosion left long enough become collapse
Everything on this list has an earlier, cheaper stage — a stage where lining, bursting, or coating could have handled it. That’s the strongest argument for camera inspection at the first sign of trouble: the ladder only runs one direction.
Signs You Need Horizontal Directional Drilling
Camera inspection can't pass a collapsed section
Every drain in the house backs up at once
A depression or sinkhole forming above the sewer line
Sewage surfacing in the yard over the line
Backups that return soon after every cleaning
The line can't be lined or burst — no followable route remains
The Benefits of Trenchless Drilling
- Works when nothing else can — HDD needs no usable route through the old pipe, so a total collapse doesn’t stop it
- A completely new pipe — modern, continuous material with decades of service life ahead of it, not a repair of aging pipe
- Correct grade, engineered fresh — the new path is bored at the proper slope, which is why it solves bellies no other method can
- No end-to-end trench — work happens through entry and exit pits, not an open cut across your yard
- Steerable around obstacles — the bore path can route beneath driveways, mature trees, and landscaping you’d rather keep
- A clean break from the failure — the old line is sealed and abandoned in place, taking its problems with it
Where HDD Fits in Your Sewer System
Your home’s wastewater path runs from the plumbing at the foundation, through the lateral crossing your yard, to the tap where it joins the municipal main. HDD replaces that middle run entirely — a new lateral on a new path from your house to the connection point. The boundary is the same one every trenchless method shares: the tap is the one point these methods generally can’t reach, and a failed connection is repaired at the connection.
How Arrow Performs Horizontal Directional Drilling
- Assessment. A sewer camera inspection confirms no usable route remains through the existing line — the finding that makes HDD the right call — and utility markout clears the new bore path.
- Pilot bore. A steerable drill head bores a guided pilot hole along the planned path from entry pit to exit pit, tracked from the surface for line and grade.
- Back-reaming. The pilot hole is widened to the diameter the new sewer line requires.
- Pipe pull. The new pipe is pulled into the reamed bore in one continuous run and connected at both ends.
- Final verification. A camera pass through the new line confirms grade, joints, and clear flow before we call the job done — and the old line is sealed and abandoned in place.
Why Hire Arrow for Horizontal Directional Drilling?
HDD is the biggest job on the trenchless ladder — which means a company that only drills has every reason to prescribe it. Arrow performs every trenchless method in-house, so the camera picks the fix, not the inventory. We recommend a new bore path only when the inspection proves nothing smaller will work.
- Serving New Jersey homeowners since 2003 — two decades of sewer and drain work across the state
- NJ Master Plumber License # 36BI01352100 — fully licensed, every job
- Rated Excellent on Google by the homeowners we’ve worked for
- Every trenchless method in-house — coating, lining, bursting, and directional drilling, so the recommendation follows the camera, not the truck
- A verification pass on every job — a post-installation camera inspection confirms the new line’s grade and flow before we call it done
- Told you need HDD? Get a second opinion — if a smaller method can save your line, we’ll show you on camera
Costs and Financing for Horizontal Directional Drilling
Cost follows the condition, not the calendar: bore length, depth, soil conditions, and access shape the price more than anything else. HDD is the largest-scope trenchless job — it’s a new line, not a repair — but it typically still costs far less than open excavation once surface restoration is counted.
That’s why every estimate follows the camera inspection: we price what your property needs, not a guess.
You can see how HDD compares to other approaches in our NJ sewer repair cost guide, and financing options are available for qualified homeowners.
Nearby Service Locations To Support You
Are you looking for Horizontal Directional Drilling in New Jersey? We can provide you service from:
Middlesex County, NJ
We serve Middlesex County from our offices in Middlesex, NJ and South Plainfield, NJ.
Somerset County, NJ
We serve Somerset County from our offices in Basking Ridge, NJ, and Bound Brook, NJ.
FAQs About Our Horizontal Directional Drilling
Does horizontal directional drilling repair my old sewer pipe?
No — and that’s the point. HDD installs a completely new line on a new path; the old pipe is sealed and abandoned in place. When a line has fully collapsed, there’s nothing left to repair — repair methods need a pipe to work inside, and HDD is the method for when there isn’t one.
How is HDD different from pipe bursting?
Both end with a new pipe, but bursting follows the old line’s path — a cable has to pass through it first. HDD bores a fresh path and never touches the old route. The camera makes the call: if the cable can follow the line, bursting is the smaller job; if nothing can pass, HDD is the answer.
Can HDD fix a belly in my sewer line?
Yes — and it’s the only trenchless method that can. Every repair that follows the old pipe inherits the old grade, sag included. A new bore path is drilled at the correct slope from the start, which eliminates the belly rather than relining it.
What happens to my old sewer line?
It’s sealed and abandoned in place — standard practice that avoids digging it out. The new line takes over the full run from your house to the connection point, and the old pipe’s problems are permanently out of the system.
How much does horizontal directional drilling cost?
It depends on bore length, depth, soil conditions, and access — which is why estimates follow the camera inspection rather than precede it. HDD is the largest-scope trenchless job, but it typically costs well below open excavation once restoration of driveways, landscaping, and hardscape is counted.
How disruptive is HDD to my property?
Far less than its name suggests. Work happens through an entry pit and an exit pit; the bore runs beneath everything in between. Driveways, mature trees, and landscaping stay where they are — that’s the reason the method exists.
Call Now: (908) 472-3801
Call Now for Horizontal Directional Drilling in New Jersey
If your sewer line has fully collapsed, the fastest way back to a working house is a new line on a new path. Arrow's HDD contractors serve all of New Jersey — schedule your camera inspection and find out whether a new bore is what your line needs.
