Pipe Lining

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Pipe Lining



We all want to keep Lake Superior clean. But did you know that your private sewer service line, the one going from your house to the street, could be contributing to the lake’s pollution?

Over time, many private sewer service lines have cracked or have collapsed. When storms and snow melt inundate Duluth, the clear water gets into the private service lines, which overwhelms the sanitary sewer system, and sewer water leaks into the ground. As a result, sewage can back up onto the street and end up in the lake. You may not realize that your home’s service line no longer functions properly and causing these problems.

HERE’S THE GOOD NEWS: Your sewer service line can be upgraded in simple way, and The City of Duluth’s residential grant program can help with the replacement costs. Property owners must be approved for the grant before the work begins. Contact City of Duluth Utility Operations at 218-730-4064 regarding any funding or grants available.

Please call Carlson Duluth Company today for your free Pipe-lining estimate! 218-727-0063

Carlson Duluth Plumbing

When it’s time to repair your old sewer lines — CARLSON DULUTH Plumbing will discuss your options


Our excavating services are designed to meet our client’s needs with solutions for install and repair of sewer and water pipes. Our staff handles light commercial and residential sewer and water installation, replacement, and repair.

Hammerhead Trenchless

Trenchless Solutions for Underground Infrastructure

Protecting our Families and Environment


Most communities around Lake Superior have two different sewer systems. Sanitary sewers were designed to carry waste water (containing sewage) from homes and businesses directly to a treatment facility where it can be cleaned before being released back into natural bodies of water. Storm sewers were designed to handle rain and snow melt that runs off the land and roads. This system drains directly to area streams, rivers and Lake Superior and is not cleaned. During heavy rainstorms, I&I may cause the sanitary sewers to quickly fill with clear rainwater that should have been directed to the storm sewer. When too much of this clear water mixes with untreated sewage, the volume flowing through the sewer pipes may exceed the capacity of the sanitary sewer system pipes.

The result is that water cannot reach the treatment plant to be cleaned because the system becomes pressurized and essentially “blows” – with diluted sewage backing up into basements or overflowing onto streets. This dirty water then flows into area streams, rivers and lakes. These overflows can lead to exposure to untreated waste water.

What causes I&I?

Old or cracked pipes may allow clear water to seep into the system through infiltration. Private service lines from homes and businesses may leak because of age, poor design or poor maintenance. Fifty five percent of Duluth’s sewer system is over 50 years old. Another large source of water is inflow from roofs, foundation drains and improperly drained sump pumps in area homes. Most homes built before 1970 were designed with roof drains or foundation footing drains that unfortunately direct rainwater into the sanitary sewer system.

What are the solutions to I&I?

The City of Duluth’s I&I program seeks to remove clear water through the installation of sump pumps and the disconnection of footing drains from the sanitary sewer system. The program designates an area of the city each year for mandatory inspection and disconnection. In some areas, grant funding is available to help complete the necessary sump pump installations. Courtesy of lakesuperiorstreams.org

Get the Lead Out

When we discuss the age of our home’s plumbing we also need to consider if the water pipes still contain lead. Lead is a common metal found in many consumer products that if ingested can be harmful to your families health. Drinking water is not our only source of lead exposure. However, combined with other sources, lead in water can increase the build-up of lead in our bodies resulting in health related issues. Although lead pipes are no longer installed in household plumbing, some homes especially older home, may have significant amounts of lead in their plumbing. This is just one more reason to have your water lines inspected and replaced to ‘Get the Lead Out.