A homeowner in Coeur d’Alene called us after noticing something no one wants to see, their toilet was backing up into the bathtub. That’s a strong sign of a main sewer line blockage. Our Drain Service team arrived promptly, diagnosed the issue, and performed a professional mainline drain cleaning. By the end of the visit, wastewater was flowing properly again and the bathroom was fully functional.
Job Overview
- Location: Coeur d’Alene, ID
- Client Type: Residential
- Scope: Diagnose and clear main sewer line blockage causing toilet and tub backup
- Equipment Installed: None
- Additional Work (if any): Pipe thawing service
Why It Mattered
When a mainline backs up, it affects more than one drain at a time. It can quickly turn into a messy and stressful situation for a homeowner. Restoring proper drainage protects the home from water damage and keeps the plumbing system working safely.
What We Found
When we arrived, the toilet was backing up into the bathtub, a common sign that the clog is deep in the main sewer line rather than in a single fixture. Given the time of year and conditions, frozen sections of pipe were also contributing to the blockage. The buildup in the line was preventing wastewater from leaving the home, forcing it to come back up through the lowest drain.
The Solution
Our technician performed a mainline drain cleaning to break up and remove the obstruction. We also completed pipe thawing to address frozen sections restricting flow. Once the blockage was cleared, we tested the system by running water through multiple fixtures to confirm everything drained properly. Before leaving, we performed a final check to ensure the line was fully open and flowing as it should.
Photo Highlights
A mainline blockage caused wastewater to back up into the bathtub, affecting multiple fixtures in the home.
Drain cleaning equipment set up to clear the main sewer line
The Results
After service, the toilet flushed normally and the bathtub drained without any signs of backup. The homeowner regained full use of the bathroom the same day. Most importantly, the risk of further overflow or water damage was eliminated.
Your Mainline Drain Cleaning Experts in Coeur d’Alene
When you need fast, reliable mainline drain cleaning in Coeur d’Alene, Mainstream is ready to help. Our experienced drain service team understands how stressful sewer backups can be and works quickly to restore safe, reliable drainage. If you’re noticing slow drains, gurgling sounds, or water backing up, schedule a quote with Mainstream and let our local experts take care of it.

