Sewer Repair Method Comparison and Cost Guide
An independent, licensed plumbing contractor. Not affiliated with Denver Water or the City and County of Denver.
Twelve methods, one decision. This guide explains what each sewer and water line method does, when it is the right call, what rules it out, and what actually drives its cost, so you can read a quote and know whether the method matches the pipe.
- Every method we run, compared in one place.
- Direct answers on when each method fits.
- The conditions that disqualify each one.
- What genuinely drives underground cost.
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How the Method Gets Chosen
Method selection is decided by four things: the condition of the existing pipe, whether grade is correct, what sits on the surface above the line, and where access points can be placed. Nothing else should decide it.
If the pipe is continuous and correctly graded, lining is usually on the table. If the whole line needs replacing but the path is right, bursting is. If grade is wrong, the line is collapsed, or the route has to change, excavation or boring is the answer and no amount of preference changes that.
Anyone quoting a method before running a camera down the line is picking the method they prefer to sell rather than the one your pipe requires.
(720) 935-6221The Four Questions That Decide the Method
- Is the pipe continuous, or is it collapsed or separated?
- Is the grade correct, or is there a belly to fix?
- What is on the surface, and what does restoring it cost?
- Where can access pits realistically be placed?
- Does the line need to stay on its path or move to a new one?
- Does the diameter need to stay the same, grow, or can it shrink slightly?
How We Diagnose It
Which Method Is Right for Which Situation
Use CIPP lining when the host pipe is round, continuous, and correctly graded but has cracks, root intrusion at joints, or corrosion. Use pull-in-place lining when that damage covers a defined shorter segment with access at both ends. Use sectional spot repair when the camera proves one isolated defect in an otherwise sound line.
Use pipe bursting when the entire line needs replacing, the path and grade are right, and you want to keep the driveway or the trees, or you need to upsize. Use open cut excavation when grade has to be corrected, the line has collapsed, or a new connection or reroute is required. Use directional boring when a new line has to be installed on a new path under something you cannot open.
Use hydro excavation to expose lines safely near live utilities and to pothole before larger work. Use pipe reaming to restore lost diameter and prepare a host pipe for lining. Use hydro jetting and descaling to remove grease, sludge, roots, and scale from sound pipe. Use camera inspection and line locating first, always, because they are what make every choice above defensible.
The Fastest Disqualifiers to Check
- Belly or back-pitch: rules out all lining. Requires excavation.
- Collapse: rules out lining, bursting, and jetting. Requires excavation.
- Multiple defects along the run: rules out spot repair.
- Line already undersized: rules out lining due to diameter loss.
- Utilities inside the displacement zone: rules out bursting.
- Rock or cobble: rules out or complicates directional boring.
- Fragile or corroded pipe wall: rules out jetting and reaming.
- Reroute required: rules out every method that follows the old path.
How to Read an Underground Quote
- 1
Ask What the Camera Showed
A defensible quote references defect type, distance from access, and depth. If none of that appears, the method was not chosen from evidence.
- 2
Check the Method Against the Defect
Lining quoted on a bellied line, or a spot repair quoted on a line with defects throughout, is the wrong method regardless of price.
- 3
Look at Depth and Access
Depth is the largest cost multiplier in excavation and the reason two quotes on the same footage can differ by thousands.
- 4
Confirm Restoration Is Included
Surface restoration, backfill compaction, permits, and inspection either appear in the quote or appear later as a surprise.
Talk Through the Method Before Work Starts
What Actually Drives Cost Across Every Method
Depth first. A line at four feet and a line at twelve feet are different projects, because depth drives shoring, spoil handling, pit size, and time. It affects trenchless work too, since access pits still have to reach the pipe.
Then length, diameter, and pipe material. Then access: whether a cleanout exists, whether the rig can get close, whether the pits land in lawn or concrete. Then preparation, since a host pipe needing heavy reaming before lining adds a step before the method even begins.
Then jurisdiction. Work in the public right of way brings permits, inspection, and traffic control. Then restoration, which is where trenchless earns its premium: the method costs more per foot and saves the driveway, patio, or mature trees that the trench would have cost you.
We do not publish flat prices for underground work, because a fixed number quoted before inspection is either padded to cover the unknown or destined to change. You get a scoped quote once we know what is in the ground.
Trenchless repair rebuilds or replaces a sewer line through small access pits, while open cut excavation opens a trench along the line. The table below compares the two across the factors that decide which one a property needs.
| Factor | Trenchless (lining or bursting) | Open cut excavation |
|---|---|---|
| Surface disruption | Access pits at each end of the run, so driveways, patios, and mature trees usually stay in place. | A continuous trench along the line, so everything above the pipe is removed. |
| Restoration cost | Limited to the pits, which is where the method earns back its higher per foot price. | Covers the full trench footprint, including concrete, asphalt, and landscaping. |
| Time on site | Typically shorter, because the excavation volume is small. | Typically longer, because the trench has to be dug, shored, backfilled, and compacted. |
| Pipe condition required | Lining needs a continuous, close to round host pipe with correct grade. Bursting needs the existing path and grade to be correct. | None. Open cut is the method that works on collapsed pipe, lost grade, and reroutes. |
| Typical lifespan of the result | A new jointless pipe wall or a new pipe in the old corridor, so the result is a new line rather than a patch. | A new pipe on new bedding at corrected grade, which is the most complete rebuild available. |
| Grade correction | Not possible. A liner follows the existing fall, including a belly. | Yes. Re-bedding at correct fall is the reason to dig. |
Lifespan on either method depends on the pipe material installed and the bedding it sits in, so we state the result rather than a year count we cannot source.
Four trenchless methods solve four different problems, and picking the wrong one is the most common way an underground project goes sideways. This table shows when each is used, what access it needs, and what rules it out.
| Method | When to use it | Pipe diameter range | Access required | What disqualifies it |
|---|---|---|---|---|
| CIPP lining | Cracks, root intrusion at joints, or corrosion along a continuous, correctly graded line. | Standard residential and commercial laterals. Confirm the range against the liner system for your line. | One access point, plus a cleanout or a pit at the far end for larger runs. | A belly, a collapse, severe offsets, missing pipe wall, or a line already undersized. |
| Pipe bursting | The whole line is due for replacement, the path and grade are right, and the surface should stay intact. | Same size or upsized replacement, sized to the new pipe rather than the old. | An entry pit and a receiving pit, one at each end of the run. | Utilities inside the displacement zone, a collapse that blocks the pull, or a required reroute. |
| Sectional spot repair | The camera proves one isolated defect in a line that is otherwise sound. | Matched to the host pipe at the defect. | One access point that reaches the defect. | Multiple defects along the run, or a host pipe at end of life. |
| Pipe reaming | Lost diameter from scale or intrusion needs restoring, often as preparation before lining. | Restores the host pipe back toward its original bore. | One access point with a straight enough path for the cutting head. | A fragile or corroded pipe wall that will not survive cutting, or a collapsed section. |
Frequently Asked Questions
Related Methods and Services
Trenchless Sewer Repair
The umbrella page covering every no-dig and low-dig repair method we run.
Explore Trenchless Sewer RepairPipe Bursting
Full line replacement pulled through the old pipe path without a long trench.
Explore Pipe BurstingCIPP Cured-In-Place Lining
A resin liner cured inside the host pipe to form a new jointless pipe wall.
Explore CIPP Cured-In-Place LiningPull-In-Place Lining
A liner pulled into position from one access point for shorter defined runs.
Explore Pull-In-Place LiningSectional Spot Repair
A short liner or replacement section targeting one isolated defect.
Explore Sectional Spot RepairOpen Cut Excavation
Traditional trenching when the line has to be exposed and physically replaced.
Explore Open Cut ExcavationHydro Excavation
Water and vacuum digging for safe exposure around live utilities.
Explore Hydro ExcavationDirectional Boring
A steered bore that installs a new line on a new path under obstacles.
Explore Directional BoringPipe Reaming
Cutting the interior of a pipe back to full diameter before lining or cleaning.
Explore Pipe ReamingHydro Jetting and Descaling
High pressure water and cutting heads that strip grease, roots, and scale.
Explore Hydro Jetting and DescalingSewer Camera Inspection
Video inspection that identifies the defect, its depth, and its location.
Explore Sewer Camera InspectionLine Locating and Marking
Electronic locating that puts the line path and depth on the ground surface.
Explore Line Locating and MarkingFrom Our Guides
Guides on Sewer Repair Methods and Trenchless
- 01Sewer Line Repair vs Replacement in Denver: Which One Makes More Sense?The right sewer decision in Denver is not automatically repair and it is not automatically replacement. Repair makes more sense when the damage is limited and the rest of the line is still worth saving.
- 02Trenchless Sewer Line Repair Cost in Denver: What Changes the Price?Trenchless sewer line repair cost in Denver can vary more than most homeowners expect because the price is not only about the pipe.
- 03Pipe Lining vs Sewer Line Replacement in Denver: Which Costs Less and When Is It Worth It?Pipe lining and sewer line replacement both solve sewer problems, but they do not solve the same kind of problem in the same way.
Get the Method Matched to Your Pipe
Camera inspection, honest assessment, scoped quote. Call (720) 935-6221 or request a free quote.