Sewer Line Repair & Replacement in Knoxville, TN
Cast iron, clay, and PVC sewer laterals — inspected carefully, camera-evaluated when appropriate, and repaired or replaced based on actual condition.
Symptoms Knoxville homeowners call us about
- Multiple drains back up at once, or sewage comes up at the lowest fixture
- Yard has a sunken trench or a persistent sewage smell
- Toilet gurgles or bubbles when the washing machine drains
- Tree roots keep returning after every snaking
- An older home with original cast iron or clay sewer line
A main-line restriction often affects more than one fixture, and the lowest drain in the home may show symptoms first. A sunken area, wet spot, or sewage odor outdoors can also point toward a sewer issue, but those signs are not conclusive by themselves. We use the pattern of symptoms, clearing results, camera findings, and locating information to determine whether the problem is a blockage, damaged section, sag, root intrusion, or something else.
Still not sure what's going on?
Our AI Plumber can help you narrow it down — describe what you're seeing and it'll walk you through likely causes, safe checks, and whether it's a DIY job or time to call a professional.
What's usually behind these problems
- —Tree root intrusion at joints and cracks
- —Cast iron line corroded and scaled from the inside
- —Sag or belly in the line collecting debris
- —Collapsed or broken pipe
- —Offset or separated joints
- —Heavy grease and debris buildup over decades
We camera before we dig
Sewer repairs are expensive, so we identify the problem before recommending excavation or replacement. When conditions allow, a sewer camera inspection tells us what's happening, where it's happening, and whether repair is actually warranted — so you don't dig up your yard on a guess.
We show you the footage and explain what we see: roots, a belly, an offset joint, a collapse, scale, or other defects. An isolated problem may be a good candidate for a spot repair, while widespread structural deterioration can make replacement the better long-term option. Camera findings are one part of that decision.
How we diagnose and fix it
- 01Clear the line if needed
If the line is backed up, we clear it first so the camera can travel the full length.
- 02Run the camera
We feed a camera through the line and inspect the pipe conditions on screen.
- 03Locate the problem
When conditions allow, camera and locating equipment help estimate the position and depth of visible defects before excavation.
- 04Review findings
We show you the footage and explain whether a spot repair or full replacement is warranted.
- 05Repair or replace
We use the inspection and site findings to target the work as closely as practical, then repair or replace the affected scope and verify drainage.
Know What You're Repairing Before You Dig
- A camera and locator can often narrow down the location and nature of a sewer problem before excavation, helping reduce unnecessary digging. Some conditions can limit visibility or locating accuracy, so findings are interpreted together with access and site conditions.
- An isolated defect may be a good candidate for spot repair; widespread deterioration, severe scale, repeated root intrusion, or multiple defects may make replacement the better long-term option.
- Older cast iron or clay should be judged by condition, not age alone. Repeated clearing may restore flow, but if the pipe is structurally deteriorated, repair or replacement may be needed to address the underlying problem.
- We show you the footage so you understand the recommendation before you commit.
- If roots repeatedly enter through damaged joints or a pipe is structurally failed, clearing may restore temporary flow while repair or replacement addresses the underlying defect.
What Knoxville homeowners say about this service
Genuine reviews from real service calls — not fabricated.
Camera inspection found tree roots in our sewer line that two other companies missed. Showed me the video, explained the options honestly, and the repair has held perfectly.
Jennifer T.
Hardin Valley · Sewer Camera Inspection
Sewer Problems We Find in Older Knoxville Homes
Many older Knoxville homes still have cast iron or clay sewer laterals. Cast iron can develop internal scale, corrosion, cracks, or missing sections over time, while clay can develop cracked, offset, or separated joints that may allow root intrusion. The important question is the line's present condition, not its age by itself.
Mature trees in established Knoxville neighborhoods can contribute to root intrusion where pipe joints or cracks provide an entry point. Sags, offsets, scale, and other defects can also contribute to recurring problems. A camera helps distinguish between these conditions when the line is clear enough to inspect.
Real questions, straight answers
Tank, tankless, gas, electric, and point-of-use water heaters — from no-hot-water problems and leaks to planned replacement and installation.
ToiletsRunning, leaking, weak-flushing, or won't flush at all — we fix every common toilet problem and replace units when repair no longer makes sense.
FaucetsDrips, low pressure, hard-to-shut-off handles, and cartridge failures — repaired or replaced for Moen, Delta, Kohler, American Standard, Pfister and more.
Drain CleaningClogged sinks, showers, tubs, floor drains, branch lines, and main sewer lines — diagnosed first, cleared with the right method, and evaluated further when the problem keeps coming back.
Financing may be available for this type of project
Larger plumbing projects can be an unexpected expense. Financing options may be available for qualifying customers.
Learn about financingProperty manager? We handle plumbing for rentals and portfolios.
Tenant coordination, documentation, approval workflows, and turnover repairs — built for property management.
Rather have us handle it?
Request service from The Classic Plumber — Knoxville's plumbing expert.