The answer to 'how to maintain sewer line' is to regularly inspect, clean, and monitor your home's sewer line. This helps prevent clogs, backups, and costly repairs down the line. Start by visually inspecting the sewer line access point for any signs of damage or blockages. You can also use a sewer camera to inspect the interior of the line.
If the line appears clear, consider having it professionally cleaned every 18-24 months to remove built-up debris and grease. Avoid pouring grease, oil, or harsh chemicals down drains, as these can damage the sewer line over time. If you notice slow drains, gurgling sounds, or sewage backups, call a professional plumber right away to diagnose and fix the issue before it gets worse.