The answer to 'sewer line making gurgling noise' is that a gurgling noise in the sewer line is typically a sign of a blockage or clog in the plumbing system. This can be caused by a buildup of debris, tree roots, or other obstructions in the sewer line. Gurgling noises often occur when water or air is forced through the blockage, creating a bubbling or gurgling sound.
If you hear a gurgling noise coming from your sewer line, it's important to address the issue promptly to prevent further problems, such as sewage backups or flooding. In some cases, the issue can be resolved through DIY methods, such as using a plunger or a drain snake to clear the blockage. However, if the problem persists or the blockage is severe, it's best to call a professional plumber to inspect the sewer line and determine the best course of action.