Sewer Backup: What Homeowners Need to Know
A sewer backup is a health hazard, not a DIY project. Here's what to do, what to avoid, and when to call for help.
This is NOT a DIY situation
Sewage contains harmful bacteria and pathogens. Do not attempt to clear a sewer backup yourself. Call a licensed plumber.
What to Do Immediately
1. Stop Using Water
Every flush, every drain adds to the problem. Stop all water use in the home until the issue is resolved.
2. Evacuate the Affected Area
Keep people and pets away from sewage. This is a health hazard — bacteria like E. coli and other pathogens are present.
3. Ventilate If Safe
Open windows in affected areas if you can do so without walking through sewage. Don't use fans that could spread contamination.
4. Call a Licensed Plumber
This requires professional equipment (cameras, hydro-jetting) and expertise. Call for emergency service.
5. Document for Insurance
Take photos from a safe distance. Note the time it started and any recent plumbing work or events.
What NOT to Do
✕ Don't use drain chemicals
They won't help a sewer backup and can make the situation more dangerous.
✕ Don't try to snake the main line yourself
Main sewer lines require professional equipment and expertise.
✕ Don't walk through sewage
If you must, wear rubber boots and gloves. Dispose of or thoroughly disinfect afterward.
✕ Don't turn on HVAC systems
This can spread contamination through your home.
✕ Don't clean up until cleared
Wait until the plumber confirms the line is clear and no more backup will occur.
Common Causes
Tree Root Intrusion
Roots seek moisture and can crack or enter sewer lines. Common in older Vancouver neighborhoods with mature trees.
Line Collapse or Break
Older clay or cast iron pipes can collapse over time, especially in areas with ground movement.
Grease Buildup
Grease poured down drains accumulates in the line over time, eventually causing blockages.
Flushed Items
"Flushable" wipes, feminine products, and other items that don't break down properly.
What to Expect from a Professional
Camera inspection: A plumber will likely run a camera through the line to identify the cause and location of the blockage.
Line clearing: Depending on the cause, this might involve mechanical snaking, hydro-jetting, or in severe cases, excavation.
Recommendations: You'll get an assessment of your sewer line's condition and recommendations for repair or replacement if needed.
Cost Ranges (Vancouver)
- • Camera inspection: $150-$400
- • Line clearing (snaking/jetting): $200-$600
- • Emergency service premium: 1.5x to 2x
- • Line repair/replacement: $3,000-$15,000+ (depends on access)
Rough estimates only. Get quotes from licensed plumbers for your specific situation.