Sewer line replacement in Knoxville, TN renews the lateral from your house to the city main, a pipe usually 2 to 6 feet deep. It is done by open trench, by bursting new pipe through the old path, or by lining, and a camera inspection decides which method your line can take.
Updated October 2026
When a Sewer Line Needs Replacing, Not Repairing
A single root intrusion or one cracked joint is a spot repair. Replacement is for a line failing along its length: Orangeburg gone oval, clay tile rooted at every joint, cast iron scaled and cracked, or a belly that holds water however often it is cleared.
We decide from the camera, not from the backups. A sewer camera runs from the cleanout to the tap, depth and location are marked from the surface, and you watch the footage. If most of the run is sound, you get a repair price instead.
What Sets the Price of a Sewer Replacement
Sewer replacement is priced by the line, not from a menu. Length, depth and what sits on top of it drive most of the number.
A long, deep lateral takes more digging or more bursting cable.
Bursting avoids a full trench but needs a route it can follow.
Driveways, patios, mature trees and fences change the route or the restoration.
Work at the city connection can need coordination with the sewer utility.
A plumbing permit typically runs $100 to $250, and we pull it.
Open Trench, Pipe Bursting or Lining
Each method suits a different line, and the camera footage usually makes the choice.
| Method | How it works | Yard impact | Best for |
|---|---|---|---|
| Open trench | Old pipe dug out, new pipe laid and bedded | A trench along the route | Sagged lines, rerouting, total collapse |
| Pipe bursting | New pipe pulled through, old one split outward | Pits at each end | Orangeburg or cracked clay on a good path |
| Lining | Resin liner cured inside the old pipe | One or two access points | Round, mostly intact clay or cast iron |
Full Lateral Replacement
A full lateral replacement renews the pipe from the foundation to the tap on the city main. Open-cut means a trench along the route, new PVC bedded on stone at a steady fall, and the trench backfilled and compacted. It is the right method when the line has sagged, when the route needs to change, or when the old pipe is too collapsed to pull anything through. We add a two-way cleanout near the house so the next camera run or clearing never needs a toilet pulled.
Orangeburg Pipe Replacement
Orangeburg is tar-impregnated wood fiber, and it was never meant to last. Under soil load it slowly flattens into an oval and blisters inside, and roots and cables finish it off. It can't be lined, because a liner needs a pipe that still holds its shape. It can often be replaced by pipe bursting, where a bursting head pulls new HDPE through the old path and splits the Orangeburg outward, with pits dug only at each end. Badly collapsed stretches go open-cut.
Clay Tile Sewer Replacement
Clay tile resists corrosion well; its weakness is the joints. There is a joint every few feet, and roots find each one. Once the camera shows roots at joint after joint, offset sections and cracked bells, clearing becomes a subscription. Replacing clay with continuous PVC or HDPE removes the joints roots exploit, and the smooth wall carries paper and grease through instead of snagging it at every offset. Where the clay is still round and mostly intact, trenchless lining is an alternative worth pricing alongside replacement.
What a Sewer Replacement Includes
- Camera inspection with depth and location marked
- Permit pulled before digging
- Utility locates before any excavation
- New PVC or HDPE from foundation to tap
- Two-way cleanout near the house
- Final camera run through the new line
- Trench backfilled and compacted
Why So Many Knoxville Laterals Are Due at Once
Backups coming back every few weeks? Get the line on camera.
(865) 344-9122From Camera Footage to a New Line
- 1
Camera and locate
Line scoped end to end, problem spots and depth marked.
- 2
Choose the method
Trench, bursting or lining priced side by side.
- 3
Permit and locates
Permit pulled and buried utilities marked before digging.
- 4
Replace
New pipe laid at a steady fall, cleanout added.
- 5
Inspect and restore
New line camera-checked, inspected, backfilled.
Sewer Line Replacement Questions From Knoxville Homeowners
How long does a sewer replacement take?
Most laterals are replaced in days, not weeks. Bursting is usually quicker than a full trench, and inspection timing sets the finish.
Can I use my plumbing during the work?
Not while the line is open. We plan the cutover so the house is without a drain for as short a stretch as possible.
Does homeowners insurance cover Orangeburg failure?
Wear and deterioration are usually excluded, but policies differ and some carriers offer a service line rider. Check yours first.
Who owns the line between my house and the street?
The homeowner usually owns the lateral up to the main or the property line, depending on the utility's rules. We confirm where yours ends.
Will you tear up my driveway?
Only if the line runs under it and bursting cannot follow the path. The camera and locate show the route before anyone digs.
Should I check the sewer before selling?
Buyers increasingly ask for a sewer scope. A pre-listing plumbing inspection tells you what they will find first.
Other Drains & Sewer Jobs We Handle
Sewer Cleanout Installation
Two-way outdoor cleanout and indoor cleanout access.
More on sewer cleanout installationSewer Camera Inspection
Pre-purchase sewer scope and locate and depth marking.
More on sewer camera inspectionTired of the same backup coming back?
Call for a camera inspection and a straight answer on repair or replacement.