Sewer Lateral Responsibility

Worker creating a space for a sewer lateral on the side of a house.

Los Altos residents are responsible for the maintenance of sewer laterals from their home to the main sewer line, which is typically in the street.

The property owner is responsible for re-construction of the sewer lateral from the first joint after the property line to the home. The City is responsible for re-construction from the first joint after the property line to the main sewer line. 

For a detailed diagram depicting these responsibilities, please click on the link below:

If you have questions about your sewer lateral responsibilities, contact the Maintenance Division at (650) 947-2785.