After we purchased our home, our sewer line backed up. Upon further investigation, we discovered the majority of our sewer line, which had been recently replaced, had been installed flat including the majority of the visible sewer line found in our 5 foot high crawlspace underneath our home. Underneath the home there is 12 feet of visible sewer line. 7 feet of that visible sewer line is flat or actually slopes back toward the house. The remaining 5 feet of visible sewer line slopes slighty toward the sewer main in the street as it leaves the house. The sewer line is flat well into the front yard, but this section is not visible. After our plumbing issues arose we had the line camera'd which found standing sewage in the sewer line underneath the entire home and into the front yard. It also disclosed there were roots near the street. (Note that at the time the line was camera'd the root problem had been cleared so that the standing sewage in the line was solely caused by the flat sewer line.)
Our inspector did not note any plumbing problems in the plumbing section of his report. We told our inspector about the problem and he contends the flat sewer line does not contribute to our sewer problem. We contend that had the inspector identified the flat sewer line we could have then hired a plumber to determine whether it actually was a significant problem. Instead, we purchased the home relying on the inspector's report unaware of any sewer problems. We are now faced with a very expensive proposition of having to replace our entire sewer line.
I have two questions: 1) should the inspector have identified the visible flat sewer line underneath our home and, if so, 2) how do we proceed against the inspector (i.e. is there an agency we can go through to resolve this issue or do we have to hire an attorney).