What Counts as an Underground Leak
Underground water leaks happen in buried pipe — most often the water service line running from the street meter to your house, but also irrigation lines, or in some cases a sewer lateral (though that’s a distinct issue with its own dedicated page). These leaks are entirely out of sight by nature, which is exactly why detection matters here more than almost anywhere else — there’s no wall to open and look behind.
This page covers the general underground leak scenario. If you already know it’s specifically your main service line, see our water line leak detection page for more detail on that specific process.
How We Locate a Buried Leak
- Pressure test to confirm a leak exists and roughly which section of pipe it’s in
- Electronic line tracing to map the buried pipe’s exact path and depth — especially useful when there’s no plumbing diagram for the property
- Acoustic listening along the traced path to pinpoint the specific leak location
- Minimal excavation at the confirmed spot only, not the whole trench
To detect water leakage underground reliably, equipment alone isn’t enough — it takes experience reading what that equipment is actually telling you. We detect leakage of every buried-line type throughout Torrance, every week.
Frequently Asked Questions
How deep are underground water lines typically buried?
Residential water service lines are typically buried 12 to 24 inches deep, though this varies by property and original installation. Electronic line tracing tells us the exact depth on your property before any digging starts.
Can an underground leak affect my foundation?
Yes, if it runs long enough. Sustained water saturation from a leaking underground line near the house can affect soil conditions supporting the foundation, similar to how a long-running slab leak can contribute to foundation movement.
How long can an underground leak run before I notice it?
This varies widely. A small leak in a low-traffic part of the yard can run for months before creating a visible wet spot, which is why a rising water bill is often the first real sign, not something you can see.
Do I need to dig up my whole yard to find an underground leak?
No. Pressure testing and electronic line tracing narrow the leak’s location to a small, specific area before any excavation. We dig only at the confirmed spot.
What’s the difference between an underground leak and a sewer lateral leak?
An underground water leak is in a pressurized supply line carrying clean water to your house. A sewer lateral leak is in the drain line carrying wastewater away, and in Torrance carries its own specific liability rules – see our dedicated sewer lateral page for details.
Soggy Yard or Rising Water Bill?
Let’s trace it and confirm exactly what’s happening underground.
Underground Water Leak Detection • Torrance, CA
Underground Water Leak Detection in Torrance, CA
Soggy patch of lawn, sinkhole, or a leak somewhere between the street and your house? We trace and pinpoint buried line leaks before any digging starts.
What Counts as an Underground Leak
Underground water leaks happen in buried pipe — most often the water service line running from the street meter to your house, but also irrigation lines, or in some cases a sewer lateral (though that’s a distinct issue with its own dedicated page). These leaks are entirely out of sight by nature, which is exactly why detection matters here more than almost anywhere else — there’s no wall to open and look behind.
This page covers the general underground leak scenario. If you already know it’s specifically your main service line, see our water line leak detection page for more detail on that specific process.
How We Locate a Buried Leak
- Pressure test to confirm a leak exists and roughly which section of pipe it’s in
- Electronic line tracing to map the buried pipe’s exact path and depth — especially useful when there’s no plumbing diagram for the property
- Acoustic listening along the traced path to pinpoint the specific leak location
- Minimal excavation at the confirmed spot only, not the whole trench
Frequently Asked Questions
How deep are underground water lines typically buried?
Residential water service lines are typically buried 12 to 24 inches deep, though this varies by property and original installation. Electronic line tracing tells us the exact depth on your property before any digging starts.
Can an underground leak affect my foundation?
Yes, if it runs long enough. Sustained water saturation from a leaking underground line near the house can affect soil conditions supporting the foundation, similar to how a long-running slab leak can contribute to foundation movement.
How long can an underground leak run before I notice it?
This varies widely. A small leak in a low-traffic part of the yard can run for months before creating a visible wet spot, which is why a rising water bill is often the first real sign, not something you can see.
Do I need to dig up my whole yard to find an underground leak?
No. Pressure testing and electronic line tracing narrow the leak’s location to a small, specific area before any excavation. We dig only at the confirmed spot.
What’s the difference between an underground leak and a sewer lateral leak?
An underground water leak is in a pressurized supply line carrying clean water to your house. A sewer lateral leak is in the drain line carrying wastewater away, and in Torrance carries its own specific liability rules – see our dedicated sewer lateral page for details.
Soggy Yard or Rising Water Bill?
Let’s trace it and confirm exactly what’s happening underground.