Is the slow drain problem due to indoor plumbing or the septic system?
A simple initial step must be taken to distinguish between an in-building plumbing problem and an (outside) on-site waste disposal system problem. Simply put, if a single building fixture is sluggish or clogged, but if other building fixtures drain properly, you should suspect a local clog or vent problem at the individual fixture. If all building drains are slow or clogged, or if waste is backing up into the building from the lowest plumbing fixture, you would suspect the onsite waste disposal system. Our client (left) is pointing to a leaky clamp patch on a building drain line. Odd and excessive slope, a mix of materials, and this patch were evidence of amateur workmanship that presaged problems with this drain system.
