A few things out there can cause sewer damage. You can avoid some of these things with proper care and maintenance of your sewer line. However, here are the key factors that can cause damage to sewer lines:

• Roots of trees are one of the most common factors that can damage sewer lines.
• If your sewer pipe lining is of metal, it may get rusted or corroded over time, ultimately impacting its efficiency.

• Recurring Drain Blockages: Frequent reliance on a plunger or simultaneous clogging of sink and tub drains could indicate a blockage in the main sewer line. Fortunately, a plumber can swiftly clear the obstruction and restore smooth drainage.
• Yard Swelling or Standing Water: Pooled water or irregular ground swells in your yard might signal a sewage leak. If accompanied by a foul odor, it's crucial to address the issue promptly to prevent further damage.
• Sewage Backup: Sewage backing up through sinks indicates a probable blockage in the sewer line. Immediate intervention by a plumber can prevent a more severe issue from developing.
• Unpleasant Odors: Damaged sewer lines may result in sewage leakage, leading to foul smells emanating from drains or pipes. Addressing such issues promptly is essential to prevent further complications.
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• Debris can also build up in sewer lines over time. It may eventually get significant to block the water flow or cause the sewer pipes to leak or break.

Blocked drains, swell in the yard, Bad odor, and backed up sewer are the key signs that your sewer drain is broken or malfunctioned. Hiring a local sewer line repair company is the only thing you must consider here.