Heise's Plumbing recently resolved a severe sewer backup for a residence in the Miraloma Park neighborhood of San Francisco, California.
The Problem
The homeowner reported that the main sewer line was backing up.
Our Inspection
The technician performed a detailed diagnosis, attempting to clear the block from the house trap.
Our Solution
When that proved unsuccessful, the team removed a brass cap from the sewer cleanout and snaked the line using a heavy-duty sewer machine. This cleared the root intrusion and restored full flow through the house trap in compliance with guidelines from the San Francisco Water, Power and Sewer agency. To complete the repair, the technician purchased and installed a new three-inch ABS cap on the cleanout in accordance with local plumbing regulations.
Final Results
All drain cleaning services and plumbing connections were thoroughly tested, running multiple upstairs fixtures to verify safe, reliable, and free-flowing operation.
When is Professional Drain Snaking Required?
Consider professional snaking and cleaning if you experience:
- Isolated Blockages: Single toilets, kitchen sinks, or shower drains that do not clear with a plunger.
- Foreign Object Clogs: Hair, soap scum, or small objects lodged inside the trap.
- Slow Running Drains: Sluggish drains that indicate a partial constriction in the line.
Preventing Household Drain Clogs
To prevent future clogs, install hair catchers in showers, scrape plates clean before rinsing, and avoid flushing paper towels or personal wipes.
Plumbing Considerations in Miraloma Park
Miraloma Park features mature landscaping and mature trees, which can increase the potential for root intrusion into underground sewer lines.


