What causes sewer clogs / backups?
There are several causes of clogged sewers. In our area, one of the main causes is roots from trees that may enter at the joints of pipes or cracks in older pipe. (Roots seek water and they often force their way right through the cracks in the pipe.) Also, broken pipe may allow soil to enter and cause a problem. Grease is also a main cause of clogged sewers. Introduced into the sewer lines by occupants, it can harden or collect resulting in stoppages and backups.