Tree root intrusion, clay soil movement, aging pipe materials (clay and Orangeburg are still in the ground in many older DFW neighborhoods), and grease buildup are the four leading causes of sewer line damage across Plano, Garland, Dallas, and the surrounding area.
DFW sewer lines face a specific set of challenges that make this market harder on underground pipe than most of the country. Understanding the causes helps homeowners prioritize prevention and recognize early symptoms.
nnTree Root Intrusion
nTree roots seek moisture. Sewer lines, which carry moisture and nutrients, are exactly what roots are looking for underground. A single hairline crack at a pipe joint is enough for roots to enter; once inside, they grow and eventually fill the pipe. Mature oaks, elms, and other large trees common in established DFW neighborhoods are the primary culprits. Annual camera inspection catches root growth before it causes a backup.
nnClay Soil Movement
nDFW's expansive clay shifts several inches seasonally. Pipe joints buried in that clay move with the soil; over decades, that cyclic movement cracks joints and creates bellies — low spots where sewage pools rather than draining. Bellies accumulate grease and solids and eventually cause chronic backups even without root intrusion.
nnAging Pipe Materials
nMany DFW homes built before 1970 have clay tile sewer pipe, which is durable but prone to joint failure and root intrusion. Some homes from that era have Orangeburg pipe — a pressed-paper composite that was supposed to last 50 years but begins delaminating in 20–30. By 2026, Orangeburg in the ground is decades past its design life. If your home was built before 1965 and the sewer hasn't been inspected, a camera run is worthwhile. Call 682-284-0966.
