There are a few different ways to fix a broken sewer line.
Conventional trenching is used when a sewer line is highly damaged. When replacing a sewer line, contractors need to ensure that the right end of the pipe is slanted towards the city’s connection, or else the sewage will flow back towards your home. This method is invasive but may be the correct solution to your sewer problem.
Pipe Lining is another method if you have a more minimal sewer problem. Pipe lining uses an inflatable tube covered in epoxy placed into your sewer line. While the tube is inflated, the epoxy can cure repairing the leak. The inflatable tube will then be removed.
Pipe Bursting is used when a sewer line is too damaged to use pipelining. A technician will feed a cone-shaped bit through your already existing line to be able to destroy and replace it immediately without extensive excavation.