Who Owns the Sewer Pipe Under Your Torrance Yard?
Updated 2026-10 · Torrance, CA
The short answer: you do
The City of Torrance defines the sewer lateral as the pipe that connects your property to the city sewer, starting about 12 inches outside your building and running to the public main. Property owners are responsible for operating and maintaining it, including the point where it connects to the main. That can mean pipe under the parkway or the street, not just under your lawn.
Why that matters in Torrance
A lot of Torrance laterals are vitrified clay laid in the 1950s and 60s, in short sections with a joint every few feet. Roots find those joints. Ground movement and age crack them. And because the owner's responsibility runs to the main, a break at the connection is the owner's bill.
In Old Torrance the 1912 plan ran utilities through the alleys, so the lateral on many of those lots heads out the back rather than to the street. Find your cleanout and look at which way it points.
What the city suggests you do
- Hire a licensed plumber who also holds a City of Torrance business licence
- Ask for a camera inspection of the lateral
- Repair any damage or blockage the camera finds
- Get the permits before work starts
The two permits
Work on private property needs a plumbing permit, listed by the city as "Alter Building Sewer". Work in the public right-of-way, between your property line and the sewer main, needs a construction and excavation permit. If the repair crosses the property line, both are required. The city's Community Development Department handles the applications; the company doing the work normally pulls them.
Backup in the shower, or roots on the camera? Call before anyone starts digging, and ask what the camera footage shows.
When a city tree is involved
Torrance has a separate policy for laterals damaged by roots from city trees. If the camera shows roots and a parkway tree stands near the line, contact Torrance Public Works and ask how the tree-related lateral policy applies before paying for the repair yourself.
Keeping it working
Grease down the kitchen sink, wipes of any kind, and roots are the three causes of most Torrance lateral backups. If the camera shows roots at the joints and you are not ready to replace, scheduled clearing, often once a year, keeps the line open until you are.
Where to go next
Common questions
Does homeowners insurance cover a broken sewer lateral?
Often not as standard; some insurers sell a service-line endorsement. Read the policy or ask.
Who do I call if sewage is coming from the street?
Torrance Public Works, if the problem is in the city main. If it is coming up inside your house, it is almost always the lateral.
Is trenchless replacement allowed in Torrance?
Lining and pipe bursting are common in the South Bay. The method still needs the permits above; confirm details with the city.