How can I tell if my main sewer line is clogged?

Author: Romaine Batz  |  Last update: Tuesday, February 11, 2025

Watch Out for These Four Signs of a Clogged Sewer Line?
  1. All Your Drains Reek. It's not uncommon to have a single drain that emits a foul odor. ...
  2. Your Drains Are Blocked or Slow-Moving. ...
  3. You Hear Loud Gurgling Sounds Coming From Your Pipes Throughout Your Home. ...
  4. You Have an Unnaturally Lush Landscape or a Smelly, Sunken Lawn.

What are the symptoms of a clogged sewer line?

Signs of a Clogged Sewer Line
  • Gurgling Sounds in Different Drains. A toilet may gurgle when you turn the washing machine on, or a sink or shower drain gurgles when the toilet is flushed. ...
  • Plunging Becomes a Common Chore. ...
  • Water Backs Up the Sewer Line Cleanout. ...
  • Your Drains Are Starting to Smell. ...
  • Your Yard Is a Mess.

How do I unclog a main sewer line?

Boiling Water, Baking Soda, and Vinegar: Sometimes, a combination of boiling water, baking soda, and vinegar can help dissolve and dislodge minor blockages. Pour half a cup of baking soda down the drain, followed by half a cup of vinegar. Let it sit for a few minutes, then flush it with boiling water.

How to tell if the main sewer line is backed up?

One of the most common signs of a sewer backup is slow drains. If you notice that your sinks, showers, or tubs are draining slowly, it could be a sign that something is blocking the line and causing the backup. You can also try pouring a pot of boiling water down the drain to clear it out.

How much does it cost to unclog a main sewer line?

You will likely pay around $350 to $650 to have a plumber unclog a main sewer line unless you have complications like serious damage to the line.

Signs of a Clogged Sewer Line and What to Do About It

Is a clogged sewer line covered by insurance?

Homeowners insurance may cover sewer line damage if it stems from something already included in your policy, like a fire or windstorm. Sewer line damage that is the result of wear and tear is excluded from home insurance coverage.

Who is responsible for blocked sewers?

Repairs to sewers

Sewers and lateral drains connected to the public network used to be the responsibility of the property owner. However, most are now maintained by local water companies. If you have any problems with your sewer or lateral drain, for example if it's blocked, contact your local water company.

How do I test my main sewer line?

Test Balls for Drainage Lines

To start the process, make sure your main line sewer cleanout is clear of debris and liquid. Next, insert the test ball and inflate it so that it blocks the main line. Fill the sewer system with water and observe the water level for 15-20 minutes.

How do I know if my sewer is blocked?

Smelly, noisy or slowly moving drains

Again, if there's an issue with the main sewage line, all the drains will be affected. So if all the drains in your house smell bad, produce gurgling noises, or they are draining slowly - the main sewage line could be blocked.

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.

Is a clogged main sewer line an emergency?

Once there is a blockage, you might quickly smell the foul odor or see water leaking. You certainly will know there is a problem. A sewer line clog is a very serious problem that can be considered a plumbing emergency.

How much to replace a main sewer line?

Sewer line replacement costs stem from labor, permits, materials, excavation, and landscaping restoration, potentially running from $4,000 to $25,000. Trenchless sewer replacement methods can save long-term costs by minimizing disruption and avoiding extensive excavation, despite higher initial charges.

What is the best way to unblock main drain?

#1: Use baking soda and vinegar

Simply mix one-third of a cup of vinegar with one-third of a cup of baking soda and when it starts to fizz, quickly pour it down your clogged drain. Let it sit for an hour or more (or overnight if you suspect the blockage is really bad) and then flush with hot water.

Is Roto Rooter expensive?

Roto-Rooter is a national service available in every U.S. state, including Alaska and Hawaii. Flat-rate pricing might be slightly higher in states with a higher cost of living, such as California or New York, but most plumbers charge between $45 and $200 per hour.

What is the easiest way to clear a blockage in the sewer line?

Start by removing any visible and solid obstructions from the drain, like hair or food particles. Pour 1 cup of baking soda down the drain. Slowly pour the 2 cups of white vinegar down the drain over the baking soda. The mixture will create a fizzing reaction, which can help break down the gunk in the drain.

How do I know if my main sewer line is frozen?

Read on to learn the signs of a frozen sewer pipe so that you can catch the problem before it gets worse.
  1. No Running Water. ...
  2. Visibly Frosty Pipe. ...
  3. Strange Sounds. ...
  4. Sewage Smells. ...
  5. Leaks.

How to tell if the main sewer line is clogged?

When the sewer line that carries waste away from the house is blocked, you'll notice the four signs that follow.
  1. All Your Drains Reek. ...
  2. Your Drains Are Blocked or Slow-Moving. ...
  3. You Hear Loud Gurgling Sounds Coming From Your Pipes Throughout Your Home. ...
  4. You Have an Unnaturally Lush Landscape or a Smelly, Sunken Lawn.

How much does it cost to fix a blocked drain?

Labour Costs and Timescales

The minimum labour cost for unclogging and cleaning drains is around £50 to £75. However, this is usually the rate for smaller jobs such as unclogging the toilet, bath or sink, which generally take about half an hour to complete.

Who is responsible for a clogged sewer line?

The city is responsible for any sewer problem starting from the main sewer line. This line carries waste from your home and surrounding homes to places like the city's treatment plant. The pipe usually sits outside your property line on public property.

How do I fix my main sewer line?

Your step-by-step guide: How to clear a main sewer line clog
  1. Loosen the cap on the drain pipe. ...
  2. Allow any sewer buildup to come out of the drain. ...
  3. Gently feed the auger cable into the main line drain. ...
  4. Run the auger until the clog is broken up. ...
  5. Hose out leftover debris. ...
  6. Pull the auger cable back out of the main line drain.

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 to tell if an outside drain is blocked?

This blog will point out the key signs to look out for before discussing the steps to take when you think your drainage system is clogged.
  1. Slow Drainage. ...
  2. Unpleasant Smells and Odours. ...
  3. Gurgling Sounds Coming from Drains and Plug Holes. ...
  4. Raised Water Levels.

Is a broken sewer line covered by insurance?

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 to fix blocked sewage pipe?

Use Chemical Solutions

You can make your solution out of household supplies, using vinegar, baking soda, and hot water. It can loosen up any build-up that blocks the pipes—considering that this mixture is an eco-friendly method of clearing a sewage blockage.

Will United utilities unblock drains for free?

When we come out to look at the blockage, we'll confirm if the blocked pipework belongs to us. If it does, we'll clear it for free and try to investigate the cause of the blockage.

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