I have a 90 year old house that is located on a flat lot. To drain water from my crawl space I have trenched around the inside of the crawl space. Since my house lot is flat and sectioned off where it was added to over the years, I had to install 3 sump pumps located around my trench. I have installed tarp, and a de humidifier and things are dry most of the time.
My problem: On one side of my house the trench is obstructed by my cast iron sewer line exiting the house. It cause the trench not to flow down to my sump pump. I do not want to raise the level of the trench above the sewer line. Adding another sump pump would correct this but cost $300 and a days work for me.
Would a two foot section of water hose or PVC pipe going underneath sewer line work? The water would flow down in the hose but would have to rise up several inches after the sewer line to regain the trench on other side.