How do sewage systems go bad?
The main type of failure is caused by the leaching device. In this type of failure the sewage may surface to the ground or back up into the house. This occurs due to the soil being unable to disperse the water at the rate water is coming into the trench or device. Over time, the spaces in-between the soil particles, which the water moves through clogs up. This is called a clogging mat. Other problems may be caused by water tables, crushed pipes, improper installation, etc.
