The lateral is the private sewer pipe that carries everything from your house to the public main. Ownership rules vary by city. In many places the owner is responsible for the whole lateral, including the part under the sidewalk or street and the tap into the main. Other cities split responsibility at the property line or the curb. A lateral inspection follows the pipe its full length so you know the condition of what you are responsible for.
Points the camera checks
- The cleanout and any transition fittings near the foundation
- Material changes along the run, for example cast iron to clay
- Grade, shown by standing water or a dry pipe floor
- Joints, and any offsets, cracks or roots at them
- The connection at the main, where the lateral enters the public pipe
Why the connection matters
The tap is a frequent trouble spot. An old lateral may simply be pushed into a hole in the main, and roots or soil can work into that gap. If the camera can reach the main, the footage shows whether the joint is sealed or broken.
Questions to ask your city
Before you approve repair work, ask the public works office serving Cotati, CA where your responsibility ends, whether a permit is needed and whether work in the street requires a city-approved contractor. Some cities also run programs that help with lateral repair costs, so it is worth asking.
