A sewer line blockage can affect your entire home, causing multiple slow drains, gurgling toilets, and water backing up into tubs or floor drains.
Unlike a simple drain clog, a sewer line blockage affects multiple fixtures and can quickly turn into a messy and expensive problem.
Quick Answer
A sewer line blockage occurs when debris, roots, or damage restricts the main drain line, causing backups or slow drains and gurgling in fixtures.
Symptoms
- Multiple drains are slow
- Toilet gurgles
- Water backs up in tub or shower
- Sewer odors
Confirm here: Main Drain Clog Symptoms
Causes
- Tree roots: penetrate pipes and expand
- Grease buildup: hardens inside pipes
- Debris: wipes, paper products
- Pipe damage: collapse, cracks, breaks, or misalignment
What to Check First
- Run multiple fixtures to test for blockages
- Check the lowest drains (bathtub, shower, floor drains)
- Look for outdoor signs (wet soil, odor)
What to Do
- Stop using water (faucets, toilet, washing machine, dishwasher)
- Try clearing with an drain auger
- Schedule a camera inspection
Prevention
- Avoid grease
- Do not flush wipes or feminine hygiene products
- Inspect older lines
FAQs
What is the most common cause?
Tree roots and grease buildup are the biggest culprits that cause sewer line blockages.
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