1.   All the drains into the main sewer line are gravity-fed.

2.   Connected to one end wall of the tank and near its top is the main sewer line which delivers wastewater from the house to the tank.

3.   Q. I discovered some decayed boards attached to the foundation around the opening in the foundation where the main sewer line goes through the foundation.

4.   Q. The main sewer pipe inside our basement runs along the bottom of the basement wall and is made of PVC plastic pipe.

5.   Pressure from the river caused a sewer main to break in East Dubuque on Friday, sending sewage in two neighborhoods.

6.   The organisation said three of its members, wearing gas masks, entered the main sewer early Thursday and blocked off the outlets.