Does my sewer line need to be replaced?

Author: Jocelyn Dooley DDS  |  Last update: Tuesday, December 23, 2025

Bad Smells In The Yard, In-Home, Or Coming From Drains If you notice unpleasant odors coming from your drains, yard, or inside your home, it could be a sign that your sewer line needs replacement. Sewage leaks, often caused by a broken sewer line or sewer line backup, can cause these smells.

How do you know if a sewer line needs to be replaced?

7 Warning Signs Your Sewer Line Needs to Be Replaced
  1. There's a Spike in Your Water Bill. ...
  2. You Hear Gurgling Coming from the Pipes. ...
  3. The Water Is Slowly Draining. ...
  4. Your Yard is Soggy. ...
  5. The Smell of Sewage Lingers. ...
  6. Pests Are Attracted to Your Yard. ...
  7. The Toilet Bowl Water Level Is Up and Down.

How often does a sewer line need to be replaced?

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.

Should you repair or replace your sewer line?

Sewer line repair is recommended when there are cracks or holes in your sewer line. If damage is severe, replacement of the line is recommended. A pipe leak test must be performed, then there are two ways to proceed. The first is with trenchless repair.

What is the life expectancy of a sewer pipe?

Life Expectancy of a Sewer Pipe

Old homes, or homes built prior to 1980, will most likely have clay sewer pipes. Clay sewer pipe life expectancy is approximately 50 years. PVC pipe, which became more prominent after 1980, typically lasts longer – approximately 100 years.

How do I know when my sewer line needs to be replaced?

How do you know if pipes need to be replaced?

How to Tell You Need to Replace the Pipes
  1. Discolored water.
  2. Leaks.
  3. Slow drainage.
  4. Frequent plumbing backups.
  5. Mold in your home.
  6. Sewer gas odor.
  7. Very green lawn (sewage backups)
  8. Dramatic fluctuations in water temperature.

How long do exterior sewer lines last?

This pipe, which lies buried under the soil of your yard, can last anywhere from 50-100 years or more, depending on the material from which the pipe is made and the conditions under which it is used.

How much does it cost to replace a sewer line in a house?

Cost Estimates

As we mentioned earlier, in the state of California, the cost of sewer line replacement can amount to anywhere between $50-$250 per linear foot, with an average of around $150.

How do you know if your sewer line has collapsed?

Signs of a Collapsed Sewer Line
  • Toilet Backup. ...
  • Gurgling Sounds. ...
  • Universally Malfunctioning or Slow Drains. ...
  • Standing Water. ...
  • Foul Odors. ...
  • Tree Root Infiltration. ...
  • Sinkholes in Your Yard. ...
  • Mold and Mildew Growth.

Can you replace main sewer line yourself?

As we mentioned above, it's certainly possible for a homeowner to perform sewer line replacement or sewer line repair. However, it's definitely not an easy job. When you replace the sewer line yourself you run the risk of causing even more damage.

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.

Does replacing sewer line increase home value?

If your sewer line is damaged, it could delay or even halt a possible sale. Even if you do sell the property, you could have to accept a lower price or make concessions. However, getting trenchless sewer line repair done can improve the value of your place.

How long does it take to replace a sewer line under a concrete slab?

There are many benefits to the trenchless method, most notably that it takes just 1 – 3 days to complete the job. You won't have a plumbing crew invading your home for weeks. Call Before You Dig Up That Concrete Slab!

How do you replace a sewer line without digging?

4 Types of Trenchless Sewer Repairs
  1. CIPP. Cured-in-place pipe (CIPP) technology relines damaged pipes by inserting a fiberglass tube coated with epoxy resin into the damaged pipe and then blowing it up like a balloon. ...
  2. Pipe Bursting. ...
  3. Spray Lining/Brush Coating. ...
  4. Slip Lining.

Do plumbers check sewer lines?

Professional plumbers can use various camera styles to inspect the sewer line, such as: Remote-controlled crawler cameras. Pole or fixed zoom cameras. Push rod cameras.

How long does it take to replace a main sewer line?

Typically, to replace a sewer line it can take anywhere from 1 to 2 days, to 3 to 5 days. In some rare cases, it may even be as quick as one day. Generally, the estimated time frame will depend on the layout of your property, your home's piping system, and the depth required to excavate.

How do I know if I need a new sewer line?

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

Does homeowners insurance cover collapsed sewer lines?

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.

What is the life of a sewer line?

A sewer line should last a lifetime – Normal sewer line life is 50 to 100 years. Sewer line integrity depends on how the pipe was originally installed, what's happened to the ground over time, and what surrounds the sewer.

Can sewer line be repaired?

Sewer Line Repair and Replacement

If your sewer line springs a leak or breaks and needs to be repaired, you have two options: Dig a trench around the sewer pipe or use trenchless sewer line repairs. A trenchless sewer repair is time and cost-effective, requiring little to no digging.

How do you know if your sewer line is broken in your house?

12 Signs and Symptoms of a Broken Sewer Line
  • Is Your Sewer Line Broken? A home's sewer line is a crucial yet often overlooked aspect of the plumbing system. ...
  • Foul Odors. ...
  • Backups and Blockages. ...
  • Mold Growth. ...
  • Slow Drains. ...
  • Gurgling Toilets. ...
  • Yard Waste. ...
  • Foundation Cracks.

How deep are sewer lines?

For instance, residential sewer line depth ranges from 18 to 30 inches. However, city sewer line depths are different. Your city's sewer lines must always be deeper than the deepest residential pipe to allow waste to flow downhill. As such, these lines can go as deep as needed.

How often should home sewer lines be cleaned?

Most people should have their sewer lines cleaned every 18 to 22 months or every year and a half to two years.

Why is sewer line replacement so expensive?

Sewer work is expensive because of the labor-intensive process involved, which includes excavation, pipe removal, and installation of a new one. It requires significant manual labor and expertise, driving up the overall cost.

What is the life expectancy of a concrete sewer pipe?

Occasionally the question arises as to how long concrete pipe will last. It is a generally accepted fact that concrete pipe will last at least 100 years and probably several centuries.

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