Hillside lots and sewer lines

On flat tract lots, a sewer lateral runs a short, gently sloped path to the street. On hillside lots the picture can be different. The house may sit above or below the street, the lateral may run farther or deeper, and retaining walls, terraced planting and hardscape often sit over the line.

Homes in this part of La Habra generally date from later than the city's earliest post-war tracts, so many laterals may be newer materials than the clay common in older neighborhoods. That is not guaranteed; the year built, any later repairs and a camera inspection tell you what is down there.

Conditions to keep in mind

Terrain
Sloped and terraced lots
Lateral runs
May be longer or deeper than on flat lots
Above the line
Retaining walls, steps, patios and planting are common
Pipe material
Varies by year built and past repairs; confirm on camera
Community layout
Ask whether any sewer lines are association-maintained

How slope affects sewer problems

SituationWhat can happenWhat to ask
House above the streetSteep runs drain fast; joints may shift with soil movementAre joints offset or separated on camera?
House below the streetGravity flow to the main can be challengingHow does this house's waste reach the main?
Line under a retaining wallRepairs near the wall need careCan this section be lined instead of dug?
Terraced landscapingRestoration after digging is complexWhat restoration is included?

Planning a repair on a hillside lot

  1. Confirm responsibility

    Check with the association, if any, and the city about the boundary.

  2. Camera and locate

    Map the path and depth, especially near walls and terraces.

  3. Favor less disruptive methods where they fit

    Lining can avoid disturbing walls and slopes if the pipe is a candidate.

  4. Plan for stability

    Any excavation on a slope needs attention to soil and wall stability.

  5. Get it in writing

    Method, restoration, permit and a final camera run should all be in the contract.

Who to contact

  1. Your homeowners association, if your street has one, about shared lines
  2. The city of La Habra about permits and public sewer questions
  3. The city of La Habra water utility about meter and service questions
  4. A licensed plumber, checked at cslb.ca.gov, for private lateral work
Map of Westridge. It shows an area, not an office or a job site.

Common questions

Are Westridge laterals newer than in other parts of La Habra?

Often newer than the earliest tracts, but not always. Confirm the material with a camera inspection.

Can roots still be a problem here?

Yes. Landscaped slopes often have shrubs and trees near the line, and roots find any open joint.

Who fixes a shared line?

It depends on how the community is set up. Ask your association and the city.

General information for La Habra, not a quote or professional advice. In an emergency, call 911.