5 Common Causes Why You Have A Clogged Sewer Line

By: | November 24th, 2021

Image Credit: Pixabay

Every home has a plumbing system, which carries waste from the dishwashers, toilets, sinks, and showers to the main sewer located beneath the street. It is known as a sewer line. Just like any other plumbing system, pipe, or fixture, the sewer line of your home may become clogged or damaged. The biggest challenge is that these clogs are difficult to detect. 

When a clog occurs in your sewer line, it results in dirty sewage backing up from your drains to your home. The situation causes extensive damage to your walls, flooring, and appliances. Not only this, bacteria, molds, and other elements can infiltrate your interior and impact your health. If that happens, you will need a professional contractor like Mackin & Sons Plumbing to do the inspection and repairs in case.

You must prevent this disaster by identifying the sewer line clogs before they become a serious issue. Whether it is a home sewer pipe repair or a commercial pipe clog, it would be best to get in touch with a sewer line repair service for the needful repairs. At the same time, it is essential to find out the reasons behind such blockage or clogging. 

Here are the top causes that lead to clogging of your sewer line: 

Clog in the home 

If the mainline or sewer line has developed a clog, there are higher odds that it has come from somewhere inside your home. These blockages can develop slowly or even suddenly, thereby blocking the flow of water in the line and damaging the backups. 

The most common clogging hazards are food and kitchen debris, bathroom waste, and excessive grease collected in the drain.

Shrubs and Tree Roots 

If you have large trees and shrubs in your yard, beware because they may be one of the reasons why your sewer lines are clogging again and again. Large trees and plants always look for water sources to survive during the dry seasons. 

It’s possible that the nearest water source to these greens is a sewer line located closeby. Gradually, the roots penetrate the sewer line and lead to severe damage or blockage. Many old-style homes with obsolete pipes often face this issue. 

Damaged Lines 

Damaged, cracked, or collapsed sewer lines begin to show the same symptoms as blocked sewer lines. The situation is alarming because if action isn’t taken on time, it may even flood your yard, garage, or basement. 

The damage is caused by the ground shifting because of poor ground support, natural wear and tear, or a calamity like an earthquake. 

Sanitary Blockage 

If your sanitary has clogged by any chance, it will also clog your sewer lines. Sanitary blockages lead to the same consequences as a clog in your line, such as flooding, draining excessively, and so on. 

If you notice any main sanitary blockage in your home, you must take immediate action and get in touch with a professional plumbing service to fix the problem. 

Excessive Flooding or Rainfall 

If you live in an area prone to rains, floods, and other calamities, clogging of sewer lines may be a common problem. The sewer line can withstand only a certain amount of flooding or rain before the water goes elsewhere. 

If the water pours down excessively, it makes its way into the residential sewer lines, thereby leading to clogs and sewage backup that must be addressed at the right time. 


The cost associated with sewer line repair can be expensive, particularly when the problem is severe. Apart from calling a professional service, you must also prevent these instances from happening. Pay attention to the plumbing maintenance of your house and take immediate action by hiring a sewage repair service. Taking timely action will save you a lot of money.


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