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Plumbing service guide

Sewer Line Repair

Sewer line repair fixes damage to the building sewer or lateral, the pipe that carries wastewater from a house to the public sewer main or septic system.

Call (866) 417-0220Check the symptoms
Utility crew excavating a street to reach a broken water line
Quick answerA damaged sewer line usually announces itself slowly: a main line clog that keeps returning, a sewage smell outside, or a patch of lawn that stays greener than the rest. The repair can range from replacing a single cracked section to replacing the full lateral, and the right answer depends almost entirely on what a camera inspection shows.

This page covers the warning signs, how sewer lines fail, and how the main repair methods compare so you can understand a plumber's recommendation.

What this service solves

  • Broken, cracked or collapsed sewer pipe
  • Root intrusion at joints
  • Sagging sections (bellies) that hold waste
  • Offset or separated joints
  • Deteriorated Orangeburg, clay or cast iron pipe
New blue water main pipe and valves exposed in an excavated trench
Stock photo: Rose Galloway Green / Unsplash

Common symptoms

  • Main line clogs that return after cleaning
  • Sewage odor in the yard or near the foundation
  • Soggy, sunken or unusually green strips of lawn
  • Gurgling toilets and slow drains throughout the house
  • Rodent or insect problems near drains

Most likely causes

Root intrusion

Tree roots seek moisture and enter through joints and hairline cracks, then grow until they block the pipe or split it.

Pipe material age

Clay pipe joints loosen, cast iron corrodes from the inside, and Orangeburg pipe (used in some mid-20th-century homes) deforms and collapses.

Ground movement

Settling, expansive soils and freeze-thaw cycles can shift pipe sections out of alignment or create sags.

Construction damage

Digging for utilities, fences or landscaping can crack or crush a shallow lateral.

How the problem is diagnosed

  1. Sewer camera inspection from a cleanout to record the condition and distance of each defect.
  2. Locating the camera head from above ground to mark the depth and position of the problem.
  3. Checking for property-line and city-main responsibility before planning a repair.

Repair and replacement options

OptionBest forWhat to know
Spot repairOne isolated break in otherwise good pipeExcavating at the defect and replacing a short section.
Trenchless lining (CIPP)Cracks and root-prone joints in pipe that still holds its shapeA resin-saturated liner is cured inside the old pipe to form a new pipe within it.
Pipe burstingFull replacement with minimal diggingA new pipe is pulled through while a bursting head breaks the old one apart.
Open-trench replacementCollapsed lines, severe sags or very shallow linesTraditional excavation along the pipe path. Allows grade correction.

What a plumber normally does

  1. Clean the line enough for a clear inspection.
  2. Record and locate every defect with the camera.
  3. Choose a method based on pipe shape, grade and access.
  4. Obtain permits where required and arrange utility locates before digging.
  5. Complete the repair and verify with a final camera inspection.

Emergency warning signs

  • Sewage backing up into the home
  • Sewage surfacing in the yard
  • A sudden sinkhole along the sewer path

If you see any of these, shut off water first. See emergency plumbing steps.

What affects the cost

We don’t publish national price figures because real quotes vary too much by region, access and the condition of your system. These are the factors that move the price:

  • Depth and length of the line
  • Repair method and pipe material
  • What sits on top: lawn, driveway, landscaping or trees
  • Permits and municipal inspection requirements
  • Whether the connection at the city main is affected
  • Restoration of concrete or landscaping

Ask for a written quote that names the method, materials and any permit or restoration work before work begins.

DIY vs. calling a professional

Reasonable for homeowners

  • Watching for early signs
  • Keeping wipes and grease out of the system
  • Knowing where trees are planted relative to the sewer path

Call a professional for

  • All excavation and pipe work
  • Camera inspection and locating
  • Permitted connections to the public sewer

Prevention and maintenance

  • Plant trees away from the sewer path.
  • Have older laterals inspected before buying a home.
  • Schedule cleaning for lines with known root intrusion before they block.
  • Install a cleanout if the home does not have accessible one.

Specific sewer line repair services

Sewer Camera Inspection

People who want to see inside their sewer line, for recurring clogs or before buying a home.

Learn more →

Trenchless Sewer Repair

Homeowners evaluating no-dig sewer repair methods (lining and pipe bursting) versus traditional excavation.

Learn more →

Sewer Line Replacement

Full replacement of a failed lateral when spot repair or lining is not viable.

Learn more →

Sewer Line Repair: common questions

How do I know if my sewer line is broken?

Repeated main line clogs, sewage odors outdoors, wet or sunken areas in the yard, and gurgling throughout the house are common signs. A camera inspection is the only way to confirm a break and locate it.

Can a sewer line be repaired without digging up the yard?

Often, yes. Trenchless lining and pipe bursting need only one or two small access pits. They are not suitable for every pipe, particularly fully collapsed lines or severe sags.

How long do sewer pipes last?

It varies by material and conditions. Clay and cast iron can last many decades, while Orangeburg pipe often fails much sooner. Roots, soil movement and installation quality matter as much as the material.

What is a sewer belly?

A belly is a section of pipe that has sunk below the correct slope, so waste and water collect there. Bellies cause recurring clogs and usually need excavation to correct the grade.

Does homeowners insurance cover sewer line repair?

Standard policies often exclude sewer line wear and root damage. Some insurers and utilities offer separate service-line coverage. Check your policy before assuming coverage.

Why does my yard smell like sewage?

A sewer smell outdoors can come from a damaged lateral, a loose cleanout cap, a plumbing vent on the roof, or a septic system problem. If odors persist near the sewer path, an inspection is worthwhile.

Do I need a permit to repair a sewer line?

Many municipalities require a permit and inspection for sewer repairs and replacements, especially work at the public connection. Requirements vary, so the plumber should confirm local rules.

Sewer Line Repair in specific cities

Local conditions change how this problem shows up. These city guides cover local factors in depth:

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