- Broken, cracked, offset or collapsed pipes – damaged sewer lines due to shifting soil, frozen ground, settling, etc.
- Blockage – grease buildup or a foreign object is restricting or prohibiting proper flow and/or cleaning of the sewer line.
- Corrosion – the sewer pipe has deteriorated and/or broken, causing sections of the pipe to collapse and restrict flow.
- Leaking joints – the seals between pipes have broken, allowing water to escape into the area surrounding the pipe.
- Bellied pipe – a section of the sewer pipe has sunk due to ground or soil conditions, creating a valley that collects paper and waste.
- Roots in sewer line- tree or shrub roots have invaded the sewer pipe, preventing normal cleaning and/or roots have damaged the pipe.
- Off-grade pipe – existing pipes are constructed of substandard or outdated material that may have deteriorated or corroded.