basement drain clogged

Because the basement floor drain sits at the lowest point of your plumbing system, it acts as the path of least resistance. When you turn on any tap, flush a toilet, or run an appliance upstairs, wastewater travels down and has nowhere to go because the main line is obstructed. As a result, it backs up and overflows out of the basement drain. Why Your Snake/Auger Didn't Work If you were using a standard hand snake or a small DIY auger through a sink, tub, or the basement drain itself, it likely failed for a few reasons: Distance: The blockage is likely further down the line—potentially many feet out toward the property line, past where a short cable can reach.  Cable Size and Rigidity: Main sewer lines typically require heavy-duty, motorized augers (drum or sectional machines) with thick cables and proper cutting heads to punch through tough obstructions like tree roots, heavy grease, or collapsed sections. A light hand snake will often just twist, coil up inside the pipe, or slip past the obstruction without clearing it.  The Wrong Entry Point: Clearing a main line effectively usually requires accessing the main sewer cleanout (typically located in the basement utility area, garage, or outside near the foundation) rather than a secondary drain.