
Trenchless Sewer Line Replacement in Denver, CO
Trenchless replacement pulls a new pipe through the old lateral's path using pipe bursting, replacing the full line through small entry and exit pits instead of a continuous trench. It is the right method when the lateral has failed structurally along its length but the site allows a trenchless approach.
- Full lateral replacement through small access pits, not a continuous trench
- Camera-confirmed scope and site evaluation before we quote it
- Colorado Master Plumber MP-18927 and Contractor License 2110
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How does trenchless pipe bursting replace a sewer lateral?
Pipe bursting pulls a bursting head through the existing pipe, fracturing it outward while simultaneously pulling a new pipe into its place. The new pipe follows the old one's path, which is why it works best when that alignment is still usable. It requires an entry pit at one end of the run and an exit pit at the other, but nothing in between, which is the main advantage over open cut replacement on a long run.
- The new pipe follows the existing lateral's alignment
- Only entry and exit pits are needed, not a full-length trench
- Works on most residential lateral lengths where the existing path is usable
- Not viable when utility conflicts or a badly shifted alignment block the path
When trenchless replacement is the right fit
- Camera confirms the pipe is failed enough to need full replacement
- The existing lateral's alignment is usable, without major utility conflicts
- You want to protect landscaping, driveway, or hardscape above the pipe's path
- Soil conditions at the site support pipe bursting

What trenchless sewer line replacement includes
- Camera diagnosis confirming full replacement is the right scope
- Site evaluation to confirm the existing alignment supports pipe bursting
- Entry and exit pit excavation, not a full trench
- Pipe bursting and new pipe installation along the existing path
- Reconnection to the city main or septic tie-in
- Permit filing and city inspection coordination
How trenchless sewer replacement works
- 1
Confirm the scope
Camera footage across the full lateral confirms replacement is warranted.
- 2
Evaluate the site
We check that the existing alignment and soil conditions support pipe bursting.
- 3
Dig entry and exit pits
Small pits are opened at each end of the run instead of a continuous trench.
- 4
Burst and pull the new pipe
The bursting head fractures the old pipe outward while pulling the new pipe into place.
- 5
Connect, inspect, and restore
The new lateral is connected to the main or tie-in, inspected, and the pits are backfilled.
Is your pipe material a replacement candidate?
Which old pipe materials should be replaced
Four pipe materials found in older Denver properties are replacement candidates rather than repair candidates: galvanized steel supply pipe, polybutylene supply pipe, cast iron drain pipe, and lead service lines.
| Material | Typical install era | How it fails | Health concern | Urgency |
|---|---|---|---|---|
| Galvanized steel supply | Common in homes built before the 1960s. | Rust and mineral scale build up inside the pipe until the opening closes down and pressure drops. | Rust flakes discolor water. The scale itself is a water quality nuisance rather than a toxic exposure. | Plan the replacement. Pressure and discolored water get worse steadily, not suddenly. |
| Polybutylene supply | Used from the late 1970s into the mid 1990s. | The pipe and its fittings become brittle and split, often with no warning and often at a fitting. | No direct health concern. The concern is sudden water damage. | Replace ahead of failure. Insurers and buyers routinely flag it. |
| Cast iron drain stack | Standard drain material in homes built before the 1970s. | Corrodes from the inside, scales, cracks, and eventually loses the bottom of the pipe. | Sewer gas and sewage escaping inside the structure once the wall is breached. | Replace once a camera shows scaling, channeling, or cracking. Repeated backups are the warning. |
| Lead service line | Found on some of the oldest Denver service connections, before lead was banned for potable use in 1986. | Soft metal that deforms and leaches into the water it carries. | Lead exposure in drinking water. This is the one on the list with a real health concern. | Highest urgency of the four. Replace rather than repair, and check the Denver Water lead program for your address. |
Trenchless replacement backed by a licensed contractor
- Colorado Master Plumber MP-18927A licensed master plumber reads every camera inspection before we recommend repair, lining, or replacement of a lateral.
- Plumbing Contractor license 2110Licensed as a Colorado State Plumbing Contractor to pull sewer line permits and carry the work through city inspection.
- Denver clay and root intrusion experienceYears of camera work on Denver's older clay, Orangeburg, and cast iron laterals, including the root patterns from mature cottonwoods and elms.
- 24/7 emergency sewer responseBackups at the lowest fixture in the house are answered around the clock across the Denver metro.
Ready when you are
Tell us what is happening and your Denver neighborhood. We will route it fast.
What changes the cost of trenchless replacement
Length, depth, and whether the site conditions fully support pipe bursting are the main cost drivers. Call for a quote once we have confirmed the scope on camera.
Need help right now? 24/7 emergency plumbing service. Planning a larger repair? See financing options.
- Length and depth of the lateral being replaced
- Site access for entry and exit pit excavation
- Whether the existing alignment is usable without utility conflicts
- Permit and inspection fees for your municipality
- Restoration of any disturbed landscaping or hardscape at the pits
Trenchless sewer line replacement questions
Related sewer line services
Sewer line scope and inspection
Confirms replacement is the right scope.
View sewer line scope and inspection servicesTrenchless sewer line repair
A smaller trenchless fix for a located defect.
View trenchless sewer line repair servicesSewer line replacement and installation
Open cut replacement when trenchless is not a fit.
View sewer line replacement and installation servicesSewer pipe locator and line locating
Confirms the existing alignment before bursting.
View sewer pipe locator and line locating servicesOur family of companies
Licenses, credentials, and company proof
- Colorado Master PlumberLicense MP-18927
- Colorado State Plumbing ContractorLicense 2110
- Family Owned & OperatedServing Denver since 2006, 20 years
- Better Business BureauAccredited Business, A+ rating
- Angie's List Super Service Award2012 through 2017
- Serving Denver since 2006Residential and commercial properties across the metro
More sewer line services
- Commercial Sewer Line ServicesA commercial sewer lateral carries heavier and more frequent flow than a house line, and a backup during business hours costs more than the repair itself.View page
- Sewer LinesThe sewer lateral is the pipe that carries wastewater from your house to the city main or septic tie-in, and it fails differently than a clogged drain.View page
- Emergency Sewer Line RepairSewage rising into a tub, floor drain, or the lowest toilet in the house is an active health hazard, not something to wait out until morning.View page
- Residential Sewer Line ServicesA house sewer lateral carries wastewater to the city main, and when it fails the symptoms show up as repeated backups rather than one slow drain.View page
- Sewer Line RepairSpot repair fixes the part of the lateral that actually failed, a cracked joint, a root-damaged length, or a belly, without replacing the whole line.View page
- Sewer Line Replacement & InstallationFull lateral replacement makes sense when the pipe has failed structurally along most of its length, whether that is a deteriorated clay or Orangeburg line.View page
Problems this work solves
Replace the failed lateral without a full trench.
Free quote after we confirm site conditions support it.