How to check for cracked sewer pipe?

Author: Prof. Daren Monahan  |  Last update: Friday, May 1, 2026

How to identify if you have a broken sewer pipe
  1. Soggy or sunken ground above where your sewer pipe is buried.
  2. Sudden low water pressure.
  3. Persistent clogging in your drains and slow drainage.
  4. Mouldy areas on the walls, floors, and ceilings.
  5. Cracks in your foundations.
  6. An infestation of rats or insects.

How do I know if I have a cracked sewer pipe?

Fortunately, a broken sewer line gives off several telltale signs, including:
  1. A sewer gas odor.
  2. Slow drains.
  3. Clogs and backups.
  4. A soggy or lush green lawn area.
  5. Insect and rodent infestation.

How to find a broken sewer pipe?

HOW DO YOU TELL IF YOUR SEWER PIPE IS BROKEN?
  1. Sewage Back-up. If your toilets/sinks are not getting rid of the water or backing up. ...
  2. Green and Lushes Grass. ...
  3. Sewage Water Pooling in Yard. ...
  4. Sewer Gas Odors. ...
  5. Slow Drains. ...
  6. Rodent Problem. ...
  7. Insect Infestation. ...
  8. Mold & Mildew.

Does homeowners insurance cover broken sewer pipes?

Does homeowners insurance cover your sewer line if it's damaged? Damage to your sewer line may be covered by your policy if it is caused by perils such as hail or windstorms, explosions, lightning or fire, damages caused by vehicles, vandalism or falling objects.

How do you test a sewer pipe?

To test for leaks, we take a rubber, inflatable test ball that is connected to an air hose and insert it into the sewer pipe at the main line cleanout. Once it is in place at the perimeter of your home, we inflate the ball to artificially plug the sewer line so that no water flows past it.

How to Determine if you Have a Broken Sewer Pipe

How do I check my sewer line?

Go to the city office directly or call them to see if they can tell you where the sewer line is located. Usually, they can show you where the line goes from your home to the city's main line. If you are unable to reach the city, see if there is an interactive underground utility map of your area online.

How do you diagnose a broken pipe?

6 Sure Signs You Have Broken Pipes
  1. Your Water Bill is Very High. It's already frustrating when you get a high water bill. ...
  2. Unpleasant Odors. ...
  3. Damp Walls and Carpet. ...
  4. You Can Hear Water Moving. ...
  5. Lessened Water Pressure or Quality. ...
  6. Mold Is Growing.

How many years does a sewer line last?

Generally speaking, you're going to find that most main sewer lines will only last somewhere between 50 and 100 years before you need to do a main sewer line replacement. You could very well have a broken sewer line on your hands right now and not even realize it.

How much does sewer line insurance cost?

Sewer line coverage varies in cost but can generally be obtained for $5 to $15 per month, depending on your property size and the area in which you live. Because sewer line incidents often cost upwards of $10,000 to repair, many homeowners consider sewer line coverage a good investment.

Are local governments responsible for paying for sewer line repairs?

Sewer laterals are the underground pipes that connect your home wastewater to the main sewer line in the street. Homeowners are responsible for their sewer laterals, while problems with the public sewer main line are managed by the city or municipality.

How serious is a crack in a sewer line?

A crack in your sewer pipe may slow down your plumbing and cause minor annoyances initially, but the problems will inevitably escalate if ignored. When it does, your pipes and bank account are in for an unpleasant surprise as more costly, destructive damage occurs.

How do you know if you have a busted pipe underground?

Signs of a Broken Underground Water Pipe
  1. Signs of Underground Water Leaks. If your lawn is irrigated and you notice areas that aren't getting enough water, check the sprinkler heads to make sure they aren't damaged. ...
  2. Standing Water in Your Yard. ...
  3. Moldy or Mossy Areas. ...
  4. Drop in Water Pressure. ...
  5. Other Signs of Water Problems.

What does a broken sewer line look like?

One of the most evident signs of a broken sewer or drain line is large visible cracking in the foundation. If a sewer or drain line leak goes untreated for an extended time, it may cause foundation cracks and sinkholes in the yard.

Can you fix a cracked sewer pipe?

Pipe relining has emerged as the preferred method for fixing underground PVC sewer or stormwater pipes due to its cost-effectiveness, minimal disruption, time efficiency, long-term durability, environmental friendliness, versatility, preventative maintenance benefits, improved flow, and the peace of mind provided by ...

How do plumbers find burst pipes?

Another way to inspect leaks from hidden pipes is by checking for heat from an area beneath the surface. The heat is produced when pressurized water hits a surface for a long period at high velocity. A professional plumbing company can also use modern technology to detect the sounds of water leaking underground.

How long does it take to fix a cracked sewer pipe?

Sewer repair times vary, but patching a minor crack or clearing a clog may only take a few hours. Trenchless sewer line replacement can take around two business days, while traditional replacement can take three or more.

Does homeowners insurance cover sewer pipes?

In most cases, home insurance will cover sewer line damage from specific events. This includes extreme weather (excluding earthquakes and floods), vandalism, fire, and damage from vehicles or falling objects.

How much does it cost to dig a sewer line?

Contractors typically charge per linear foot for both the removal and installation of the new sewer line. In California, that cost can equal anywhere between $50-$250 per linear foot, with an average of around $150.

Does a sewer line belly need to be replaced?

Whether a bellied sewer line needs to be replaced depends on the extent of the sag and the problems it causes. Minor bellies that don't impede the flow significantly may not require replacement.

How can I tell if my sewer line is broken?

The Top 10 Most Common Signs of Broken Sewer Lines
  1. Sewer Smell. Usually, one of the first signs of a sewer line is a bad odor. ...
  2. Gurgling Toilet. ...
  3. Pests in Your Home. ...
  4. Slow Drains. ...
  5. Sewage Backup in Your Toilet or Tub. ...
  6. Mold or Mildew On Your Ceilings or Walls. ...
  7. Cracks in Your Walls. ...
  8. Unusually Green Patches on Your Lawn.

Can you fix a sewer line yourself?

While it's certainly possible for a homeowner to replace the sewer line from the house to the street, it's not going to be an easy job. It's going to require both knowledge and manpower because it needs to be done right, or it won't work properly.

How often should you flush your sewer line?

Expert Recommendations for Sewer Line Cleaning

We recommend homeowners schedule sewer line cleaning every 18 to 24 months to prevent buildup and clogs. Regular cleanings help avoid costly repairs and extend the life of your plumbing system.

How to find a cracked pipe?

A plumbing camera is an excellent tool for locating a broken water or sewer pipe. It is a small camera attached to a long, flexible cable that can be inserted into your pipes. The camera will send real-time images of your pipes to a monitor, allowing you to see any cracks, blockages, or other issues.

Is a broken pipe covered by homeowners insurance?

Accidental water damage that occurs as a result of a sudden, unexpected occurrence like a burst pipe is often covered by a homeowners insurance policy. In addition, cleaning, repair or replacement of wood flooring, drywall and even furniture due to water damage as a result of a burst pipe typically is covered.

How do you detect cracks in pipes?

The most important methods used to detect the pipes cracks, which can fit to a mobile robot for external pipe inspection are: computer vision systems (camera), magnetic field measurements and acoustic detection (microphone).

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