Trenchless Sewer Repair vs. Excavation: Which Is Right for You?
A straightforward look at both repair methods, so you can weigh your options before a crew shows up.
- Free camera inspection with any drain line cleaning
- Free estimate on every job
- Licensed in GA & SC
A Torn-Up Yard Isn't Always Necessary
When a sewer line fails, most homeowners assume the fix means a torn-up yard. That used to be true -- but it isn't anymore, at least not always. Trenchless methods like CIPP (cured-in-place pipe) lining can often repair a damaged pipe through a small access point instead of a trench running the full length of the line. That doesn't mean trenchless is always the right call, though. Traditional excavation still has situations where it's the more practical -- or only -- option. This guide walks through both methods honestly: what each one actually involves, what it costs, and how to think about which one fits your pipe.
What "Trenchless" Actually Means
Trenchless sewer repair is an umbrella term covering a few different methods that avoid digging up the entire pipe run. The two most common are CIPP pipe lining, where a resin-saturated liner is inserted into the existing pipe and cured in place to form a new pipe within the old one, and epoxy pipe coating, which applies a protective epoxy layer to the interior of a pipe that's still structurally sound but deteriorating. A related but separate service, pipe descaling, mechanically removes scale buildup (common in older cast iron lines) so a pipe can be inspected or coated in the first place -- it's often a prerequisite step rather than a repair on its own. All of these typically require only a small access point or two, rather than a continuous trench.
What Excavation Means
Traditional excavation repair means digging down to physically expose the damaged section of pipe -- or the full line, if the whole run needs to be replaced -- so it can be repaired or swapped out directly. It's the older, more familiar method, and for certain pipe conditions it's still the more direct and reliable fix, particularly when a line has collapsed, shifted, or has damage that a liner can't span.
Side-by-Side Comparison
On pricing specifically: CIPP lining runs $75-$200 per linear foot for 4-inch pipe and $100-$300 per linear foot for 6-inch pipe. Epoxy coating runs $125-$175 per linear foot for 4-6 inch pipe. Sewer line excavation repair starts at $60 per linear foot, and water line excavation repair starts at $15 per linear foot. Every job starts with a free estimate, and a firm quote is provided before any work begins -- the ranges above reflect the fact that pipe diameter, depth, access, and site conditions all factor into the final number.
| Factor | Trenchless (CIPP/Epoxy) | Excavation |
|---|---|---|
| Yard disruption | Limited to small access point(s) | Trench along the full repair length |
| Best for | Cracks, root intrusion, deteriorating but intact pipe | Collapsed, severely offset, or crushed pipe |
| Landscaping/driveway impact | Minimal | Restoration often needed after backfill |
| Workmanship warranty | 10 years (CIPP) / 10 years (epoxy coating) | 1 year |
| Typical price basis | Per linear foot of pipe lined | Per linear foot of trench (sewer or water line) |
- Trenchless (CIPP/Epoxy)
- Limited to small access point(s)
- Excavation
- Trench along the full repair length
- Trenchless (CIPP/Epoxy)
- Cracks, root intrusion, deteriorating but intact pipe
- Excavation
- Collapsed, severely offset, or crushed pipe
- Trenchless (CIPP/Epoxy)
- Minimal
- Excavation
- Restoration often needed after backfill
- Trenchless (CIPP/Epoxy)
- 10 years (CIPP) / 10 years (epoxy coating)
- Excavation
- 1 year
- Trenchless (CIPP/Epoxy)
- Per linear foot of pipe lined
- Excavation
- Per linear foot of trench (sewer or water line)
When Trenchless Is Usually the Better Fit
- The pipe is cracked, has root intrusion, or is deteriorating from the inside, but hasn't structurally collapsed
- You want to avoid tearing up an established yard, driveway, or hardscaping above the line
- The line is under a structure, patio, or mature landscaping that would be costly or impractical to excavate
- A camera inspection shows the pipe is a good candidate for lining or coating rather than replacement
When Excavation Is Usually the Right Call
- The pipe has collapsed, is severely crushed, or has shifted out of alignment -- a liner needs a mostly intact host pipe to work with
- The damage is too extensive or too localized in a way that access, not lining, solves the problem faster
- Multiple sections of the line need full replacement rather than rehabilitation
- Site access genuinely doesn't support trenchless equipment or a small access pit
The honest answer for most homeowners is that you can't know which category your pipe falls into without a look inside it. That's why a sewer camera inspection is usually the first real step -- it's starting at $250 standalone, or free when bundled with any drain line cleaning. What the camera shows determines whether CIPP lining, epoxy coating, descaling, or excavation is the appropriate next move. We won't recommend trenchless just because it's less disruptive if the pipe condition calls for excavation, and we won't send a crew to dig if a liner will do the job.
How Long Do the Repairs Last?
Every trenchless and excavation repair we perform is backed by a workmanship warranty: 10 years on CIPP pipe lining, 10 years on epoxy pipe coating, and 1 year on traditional excavation repairs. Beyond the warranty period, the expected service life of a CIPP liner depends on the specific resin system and installation conditions. Ask us for the manufacturer-rated figure directly when you're weighing the two methods for your situation.
A Note on Cost Over Time
Trenchless methods often carry a higher per-foot price than excavation on paper, but that comparison misses the restoration costs that excavation can add -- landscaping repair, driveway or walkway patching, and the labor of digging and backfilling a trench. Excavation's lower per-foot rate applies to the trench work itself; it doesn't include restoring what sits above the pipe. When you're comparing quotes, ask what's included in each number, not just what the per-foot rate says.
Making the Call for Your Property
TDS Trenchless, a division of The Drain Surgeon Inc., has served Augusta and the surrounding area since The Drain Surgeon opened in 2005, with trenchless-specific service since 2011. We work within 60 miles of Augusta for trenchless jobs and cover Augusta GA, North Augusta SC, Evans GA, Martinez GA, Grovetown GA, and Aiken SC. Kevin Coleman, the company's owner, holds a Georgia Master Plumber license (Cert. #MP209430) and a MaxLiner Certified Installer credential, and the company carries a South Carolina Mechanical Contractor license as well. If you're trying to decide between trenchless and excavation for your own line, the fastest way to get a real answer is a camera inspection and a free, no-obligation estimate -- not a guess based on a comparison chart.
Not Sure Which Method Fits Your Pipe?
Start with a camera inspection — free with any drain line cleaning — so the quote you get is based on what is actually in your pipe.
Frequently Asked Questions
Is trenchless sewer repair always cheaper than excavation?
How do I know if my pipe qualifies for trenchless repair instead of excavation?
How long does a CIPP liner last?
Does trenchless repair work on older cast iron or clay pipe?
Will excavation damage my yard or driveway?
Get a straight answer on which repair method fits your situation. Schedule a free estimate and we'll walk the options with you.
Every job starts with a free estimate. Licensed in Georgia and South Carolina.
- Free estimate on every job
- Licensed in GA & SC
- 10-year workmanship warranty on CIPP