The answer to 'sewer line maintenance' is to regularly inspect and maintain your home's sewer line to prevent costly clogs, backups, and damage. Sewer line maintenance should be done at least once a year, or more frequently if you have older pipes or notice any issues.
Start by visually inspecting the cleanout (the access point for your sewer line) for any signs of leaks or blockages. You can also use a sewer line camera to inspect the interior of the pipe for roots, debris, or damage. If you notice any problems, it's best to call a professional plumber to properly diagnose and repair the issue.