Causes and Prevention of Basement Sewer Line Backup

Do you want to prevent sewage backup? Here is what you can do.

Your sewage system is primarily designed to ensure an outward flow of water from your home. It comprises several features that prevent the wastewater from leaving your drains and flowing in the wrong direction. However, some faults can cause the system to fail, resulting in sewage backups. Let’s have a look at some of the common causes of sewage backups:

Causes of Sewage Backups


Floods, especially when they occur after a drought, are the most common cause of sewage backups. During floods, the outdoor drains or sanitary mains on your property are often clogged up by debris. If that happens, any type of floor drain will flood the basement, causing a serious basement sewage backup. Even if no flood occurs, poor drainage surrounding the foundation may also cause basement flooding.

Flushing Items Down the Toilet

You’re probably already aware of this common cause. Sewage backups occur when certain items are flushed down the toilet. These may include excessive toilet papers, diapers, baby wipes, paper towels, feminine products and other personal care products. These items can easily block the sewage lines and clog your main sewer line, resulting in backups.


The natural landscape is a common reason for sewage line backups, but it’s not easily traceable. Over time, the tree roots that burrow in the ground pierce through the sewer lateral. The roots continue to grow until the line is completely blocked. Restoration can be a big challenge if the tree stands along a street sidewalk. This is because you will have to remove the pavement to repair the damaged pipe.

Sewer Backup Prevention Tips

Clear Sewage Lines

One great strategy is to have your sewer lines cleared every 3 to 5 years. Reach out to your local municipal water department to get the service. They should clean out your sewage line using a large, powerful vacuum. Any solids from the line should then be removed, reducing the chances of future clogs.

Route Sump Pumps, Downspouts, and Route Gutters Properly

Instead of connecting sump pumps or downspouts with your regular sewer lines, link them with storm sewers. This should help prevent rainwater from overwhelming your municipal sewers. You can also release them on the ground, but make sure they are 6 feet away from your basement.

Ensure Correct Use of Drains

The best way to prevent a sewage backup is to use your drains correctly. Limit the amount of food you put down the drain and more importantly, avoid pouring oils, coffee grounds, fats, etc., down the drain.

Sewage backups can cause water damage. For this purpose, contact S.T.O.P, a water damage restoration company that serves in North Las Vegas, Whitney Ranch, Sky Canyon, Centennial Hills, and many other areas.

To restore your home from water damages, dial now on (702) 803-3094.