Main drain and main sewer line cleaning
When several fixtures back up at once, or the lowest drain overflows when you flush, the clog is in the main drain or sewer lateral. It's cleared from a cleanout with a large cable or hydro jetting, and a repeat clog calls for a camera inspection.
The main drain collects every fixture in the house and carries it to the sewer lateral and the public main. A blockage there backs up the whole system, starting at the lowest drain.
Main-line clogs come from roots in older pipe, buildup of grease and paper, wipes, and sags where waste collects. Cleaning restores flow; finding the reason prevents the next backup.
Signs you need main drain cleaning
- Several drains slow at once
- Water rising in the tub when the toilet flushes
- Overflow at a floor drain or ground-floor shower
- Gurgling from multiple fixtures
How main drain cleaning is done
- 1
Access the line
Use an outdoor or basement cleanout, or a toilet drain if there's no cleanout.
- 2
Clear it
Run a large cable or hydro jet through the main line.
- 3
Inspect
A camera shows roots, breaks or sags that cleaning can't fix.
What affects the cost of main drain cleaning
- Cleanout access
- Line length and depth
- Cabling vs. jetting
- Camera inspection
- After-hours timing
Ask for the trip fee and the total price before work starts.
Need main drain cleaning? Call now
SteadWell is a free referral service, not a plumbing company. Calling (833) 753-0180 connects you with an independent, licensed plumber who serves your ZIP code; the plumber quotes and performs the work. Calls may be recorded.
Main drain cleaning: common questions
How often should a main sewer line be cleaned?
Only when needed, unless roots are present; a line with known roots is sometimes cleaned on a schedule until it's repaired.
Where is the sewer cleanout?
Often a capped pipe outside near the foundation, in the crawl space or basement, or near the street.
Is a main line clog an emergency?
If sewage is coming up, yes. Stop using water and call.