How to Find Problems With Your Home’s Main Line

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Most homeowners don’t spend tons of time thinking about the sewer main line under their house. However, this component is the primary connector that joins the city’s sewer main to your home. Not only that, but homeowners are the primary ones responsible for the care and maintenance of this main line.

Your main line is a crucial component of the sewer system in your house. Without this part working correctly, you will soon see – and smell – the damage that can occur in the bones of your house. The sooner you can detect problems with your home’s main line, the sooner you can fix these issues before they turn into expensive home repairs.

If you are not sure whether or not the issue you are facing is the result of the sewer system in your house, there are various signs this is the culprit. However, dealing with the common signs of a damaged main line in the sewer system can be challenging if you have no idea where and how to start. Unless you are a plumbing expert, you probably need the assistance of an experienced plumber in your area to help you.

Given their expertise and skills, plumbers know exactly how to find problems with your home’s main line. They have high-quality equipment and tools to ensure plumbing issues are spotted seamlessly. Aside from their spotting skills, they’re also skilled in repairing any problems with the main line to avoid more costly repairs and replacements. But to know more about how a sewer plumbing professional can help you, you can check out the following tips.

4 Signs of a Damaged Main Line In Your Sewer System

When there is a problem with your sewer’s main line, it will quickly get your attention. As is the case with many plumbing concerns, recognizing these problems early can save you major repair costs, expenses, replacements, and a lot of mess.

A localized drain or fixture problem can cause issues in that specific area – however, problems with your main line will cause functional problems all over your home. So – how can you recognize problems with your home’s main line?

Below are the common signs of a damaged main line in your sewer system:

Clogged Drains

Clogged drains can occur from knotted hair, debris, grime, and dirt build-up in the main line. These clogs happen all over the house simultaneously, causing frequent instances of water coming back out of the drain.

Toilet Problems

If the toilets in your home are having trouble flushing, and plunging the toilet doesn’t solve the problem, you may have an issue with your main line. If the problem is not isolated to one toilet, the cause of concern often focuses on the main line being clogged.

Low Water Pressure

When low water pressure happens unexpectedly and involuntarily, it can signal that your home’s main line has a problem. Low water pressure can be due to a drain clog or water leaks which can significantly affect your entire home plumbing.

Basement Flooding

Basement flooding is another common sign of sewer main line problems caused by a hole or crack in the pipe or a loose connection. If flooding persists for a long time, the basement is more likely to be contaminated with bacteria, mold, and viruses, causing some serious health effects.

Water Backup

If you find the shower drains begin to bubble and make noises while you use your toilet, this is a clear symptom that something is wrong with the sewer system and main line in your home. If one pipe is clogged, water will try to come out of the wrong pipe, causing gurgling, backup, and loud noises.

If you are not sure whether this is happening, you can check your toilet and shower pipes by following these steps:

  • Turn on the tap of your bathroom sink and see if toilet water begins to bubble
  • Turn on your washing machine and check for overflow in a sink or toilet
  • Flush the toilet to see if water gurgles in the shower durian

Sewage Water in Floor Drains

Another sign you have a clogged main line is a malfunctioning floor drain. If the main line sewer becomes blocked with debris, dirt, and grime, sewage water will still try to escape the system. If the other ways of water to exit have been blocked, the water from your sewage system will attempt to exit via the secondary drain.


Homeowners need to recognize the most common symptoms of a damaged main line in the sewer system to prevent expensive repairs and irreversible damage. Keeping an eye out for sewage water in the floor drains, gurgling water from the shower, clogged drains, unexpected low water pressure, basement flooding, and toilet problems can help keep repair costs as low as possible.

Lauren Author

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