Back Pitched Sewer Line: What Is It And How Can Your Contractors Fix It?

If you face the possibility of paying excessive fines for your damaged sewer line, take steps to solve your problem right away. Sometimes, a main sewer line loses its position or pitch inside the ground. When it does, the sewer line back pitches. Here's what you should know about a back pitched sewer line, how it affects your home and what your contractors can do to remedy the situation.

What Does Pitch Mean?

Pitch describes the downward angle or slope of a sewer line after it's installed in the ground. The slope helps liquid and solid waste flow properly, which prevents the contaminants from flowing back toward the home.

The slope of a sewer line depends on the size of the pipe used to transfer raw sewage from your home to the city's sewer line in the street. The size of sewer pipe also influences the flow rate of waste as it travels out to the street. For example, a 2 1/2-inch sewer line may have a slope of 1/4 inch per foot of property. If the slope is too steep, solid waste can't move down the sewer line, which creates a back pitch.

The contents of a back pitched sewer line flow the opposite way. Instead of flowing toward the street, the solid and liquid wastes backflow to your home and property. 

The wastes create cesspools of raw sewage in your yard, or they back up in your toilet, kitchen and laundry facilities and flood the inside of the house. In worst cases, the backed up sewage spreads to your neighbors' yards. If your neighbors complain to the city about your backed up sewer line, the city can place fines on your water bill.

What Causes a Back Pitched Sewer Line?

A number of things affect the pitch of a sewer line. One of the biggest issues is poor construction. If the home's original building contractors failed to use the right pitch for your sewer line during construction and planning, the line will eventually dip lower into the ground near the house.

Improperly pitched sewer lines can crack from the pressure and leak water into the soil or pavement surrounding or covering it. Over time, the leaking water saturates the soil around the damaged sewer line until depressions or holes form. 

You should understand that depressions don't always develop or form at the source of the leak. For instance, if the soil around the sewer line contains rocks and other hard sediments, the leaking liquid waste will spread out to other areas of your property that contains softer soil.

You want to hire a contractor to inspect your sewer line and fix it immediately.

What Can Your Sewer Replacement Contractors Do for You?

Your sewer repair contractors do several things when they come out to your home, including use cameras to look inside the sewer line. The cameras are small enough to travel through the pipe without damaging it even further.

The camera produces a detailed image of the sewer line's position in the ground, as well as what the line looks like from the inside. Your contractors examine the images on a special screen, which helps them decide on the best way to repair the line. If the line has multiple cracks, repair it immediately to avoid other issues, such as flooding and city street damage. 

Depending on the condition of the soil or pavement surrounding the sewer line, your contractors can repair it with an advanced technique called trenchless sewer line repair. This technique doesn't require the contractors to dig up your property or damage the rest of your landscape, which saves you money and time. 

But if the sewer line is too old to repair, you should replace it. Even if your contractors repair the cracks and properly pitch the line, it can eventually return to its original state and cause future problems you don't want to experience. 

If you have concerns about your damaged sewer line, contact your contractors for more details and solutions. You can also look online at sites like to find a contractor who can replace your damaged sewer lines.