How Much Does It Cost to Unclog a Main Sewer Line?
What drives the number: a single fixture clog costs less than a mainline clog, tree roots that need cutting, or hydro jetting for grease and scale. You get an exact price in writing before we start, after a camera confirms what's actually going on — a flat rate, not an hourly meter, so if the job runs long that's on us, not you.
Signs It's the Main Line, Not One Fixture
- Multiple drains back up around the same time.
- Drains gurgle together when one is used.
- A floor drain backs up when the washing machine runs.
Any of these points to the main line rather than a single fixture, and it's worth running a camera down the line instead of snaking the same drain over and over.
What Drives the Price
- Severity — a simple blockage clears faster than roots or a bellied section.
- Method — a standard cable auger costs less than hydro jetting, which is needed for grease, scale, or heavier root growth.
- Camera inspection — included to verify the line is actually clear, and to catch a structural problem (a crack, a break) before it becomes a bigger repair.
- What the camera finds. If the mainline issue turns out to be structural rather than just a clog, that's a sewer line repair conversation, not a drain-cleaning one — we'll tell you which situation you're in before doing any work.
Timeline
Most mainline unclogging jobs are handled same-day — call and a real person answers, days, nights, weekends, and holidays.
Idaho Cities We Serve
See our dedicated drain cleaning pages for Boise, Caldwell, Nampa, and Meridian, the full drain cleaning service page, drain cleaning cost breakdown, or hydro jetting for grease- and root-heavy lines. If the camera finds a structural problem, see sewer line repair.
Call (208) 366-5771 — we run a camera first and give you a flat price in writing before we start.
Frequently asked questions
How much does it cost to unclog a main sewer line?
It depends on what the camera finds: a mainline clog, tree roots that need cutting, or the need for hydro jetting all cost more than a routine single-fixture clog. You get an exact price in writing before we start — a flat rate, not an hourly meter.
How do I know if it's a main line clog and not just one fixture?
If multiple drains back up around the same time, gurgle together, or a floor drain backs up when the washing machine runs, that points to the main line rather than one fixture — it's worth running a camera down the line instead of snaking the same drain repeatedly.
Do you need to run a camera to unclog a main sewer line?
Yes — a camera inspection is part of the job to confirm the line is actually clear afterward, and to catch a structural problem like a crack or a bellied section before it becomes a bigger repair.
Is hydro jetting needed to unclog a main sewer line?
Not always — a standard cable auger clears most mainline clogs. Hydro jetting is used when the camera shows grease, scale, or heavier root growth that a cable alone won't fully clear.
What if the main line clog turns out to be a bigger problem?
If the camera finds a structural issue — a crack, a break, a bellied section — that's a sewer line repair conversation rather than a drain-cleaning one. We'll tell you which situation you're in and give you a price in writing before doing any work.
