Tree roots are usually the prime suspect when it comes to sewer-line damage, with thousands of feet of roots constantly seeking moisture and often finding it in your sewer line. Older, clay tile pipes are most susceptible to invasion, but these roots can penetrate even concrete and PVC pipes.

In addition to root damage, a broken or clogged sewer line can happen in a number of ways. Objects can find their way into the line and become lodged. Extreme temperature changes and general deterioration can cause sewer problems, such as lines buckling or breaking. Ground shifting or improper installation can also lead to misalignment.