What should I do if my sewer backs up?
Short answer
Stop using all water immediately, keep people and pets out of the affected area, avoid drain chemicals, report it to your sewer utility, and request a plumbing professional with camera and drain-clearing equipment.
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Immediate actions
- Stop flushing and running water anywhere in the building.
- Block off the area; treat the water as contaminated.
- Call the sewer utility to check for a main-side problem.
- Request a plumber and mention how many fixtures are affected.
- Document damage before cleanup for insurance.
Preventing repeat backups
After the line is cleared, a camera inspection identifies roots, bellies, or breaks. Where backups recur during storms, a backwater valve is a common preventive measure.
Related questions
Can I use a plunger on a sewer backup?
A plunger addresses fixture-level clogs. When several fixtures back up at once, the blockage is in the main line and plunging will not help.
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