Few homeowners know exactly where their sewer lateral runs. Yet nearly every repair decision depends on it: whether a trench would cross the driveway, how close a tree's roots are, where a new cleanout could go. A rough map, drawn once and updated after each inspection, answers those questions before anyone arrives.
Draw the lot from above on graph paper or a printout of a property outline. It does not need to be to scale; it needs to show the order of things from house to street.
How to draw it
Outline the house and lot
Mark the street, sidewalk and driveway. Label which side faces the street.
Mark the bathrooms and kitchen
Drains generally run toward where the line leaves the house, often near the bathrooms.
Find exit points
Mark the cleanout and any vent pipes on the outside walls near grade.
Draw the likely path
Sketch a dashed line from the cleanout toward the street. Make it solid once a camera locator confirms it.
Add what sits on top
Trees, shrubs, patios, walkways, planters and the driveway along that path.
Add other utilities
Water meter, gas meter, irrigation lines and any known electrical runs. Have utilities marked professionally before digging.
Symbols to use
| Symbol | Meaning |
|---|---|
| CO | Sewer cleanout |
| Dashed line | Estimated sewer path |
| Solid line | Path confirmed by camera locator |
| X with distance | Defect found on camera, with feet from cleanout |
| Circle | Tree, with rough trunk size |
| WM / GM | Water meter / gas meter |
| Hatched area | Concrete or pavers over the line |
Update the map when
- A camera inspection locates the line or a defect
- A cleanout is added or moved
- A tree is planted or removed near the path
- A patio, driveway or planter is built over the line
- Any section of the lateral is repaired or replaced
Questions your map helps answer
- Would a trench cross the driveway or a patio?
- Is there room for an access pit near the street for bursting?
- Which tree is most likely sending roots into the line?
Common questions
How do I know where my line runs?
A camera with a locator transmitter can be traced from the surface. Ask for the path to be marked during your next inspection.
Does the city have a map of my lateral?
City records may show the public main and sometimes connection points. Check with the city of La Habra about what records exist for your address.
Should I give the map to a plumber?
Yes. It saves time and helps them spot access issues before quoting.
General information for La Habra, not a quote or professional advice. In an emergency, call 911.