Acoustic Leak Detection
Electronic listening equipment picks up the sound of pressurised water escaping a pipe, so the leak can be pinpointed through floors and walls.
Leak Location Services · Alhambra, CA
Slab Leak Detection in Alhambra, CA
A slab leak is a leak in a pressurised water line running under the concrete foundation. It rarely announces itself with a flood; instead it shows up as a rising bill, a warm patch of floor, or the faint sound of running water. Slab leak detection confirms the loss, isolates the line, and pinpoints the leak so any repair opening can be as small and well-placed as possible.
Open 24 hours, 7 days a week · Serving Alhambra & the San Gabriel Valley
Signs you may need this service
- Warm or hot spots on the floor
- A water bill rising month after month
- The sound of running water with everything off
- Damp flooring, lifting tiles or a musty smell at floor level
- Cracks or moisture appearing along a floor line
Individual symptoms do not always prove a leak — they justify a proper investigation, which is what this service provides.
What this service investigates
Hot and cold supply lines embedded in or beneath the concrete slab, including the manifolds and the points where lines rise into walls.
Who it is for
- Homes with warm floors or unexplained bill increases
- Older Alhambra homes with original copper lines under the slab
- Anyone quoted a repair who wants the location verified first
How the process works
1
Confirm the loss with a meter test and rule out toilets and fixtures.
2
Isolate hot and cold lines to identify which one is leaking.
3
Trace the line's route, then pinpoint with acoustic listening, thermal imaging (especially for hot lines) or tracer gas.
4
Mark the location, explain the confidence level, and discuss repair routes — detection itself does not include the repair.
Equipment & methods
Meter testing, line isolation, acoustic listening, thermal imaging for hot-water lines, and tracer gas for quiet or deep leaks.
What affects the diagnosis
Post-tension slabs, very deep lines, heavy floor coverings and high background noise can reduce precision. Locating a leak and repairing it are different jobs: repair options (spot opening, reroute or relining where suitable) are explained separately, with their own scope.
What you receive
The marked leak location, which line is affected, how the conclusion was reached, and the repair options that follow from it.
Read more: our guide related to slab leak detection · All services · Service areas
Slab Leak Detection FAQs
What are the first signs of a slab leak?
A warm spot on the floor, a rising water bill, hearing water when nothing is running, and a meter that moves with all water off are the most common early signs. Any one of them justifies a meter check.
Will the floor have to be torn up to find it?
No. Detection is non-invasive and done from the surface. Floor opening is only needed for certain repair options, and then only at the located point.
Is a slab leak an emergency?
It is wasting water and can undermine flooring and promote mould growth, so it should not be left. If water is actively surfacing, shut off the supply and call — see our emergency guidance.
Can you also repair it?
Detection comes first so the repair is based on evidence. Repair routes depend on the line and location; they are quoted separately and honestly, including when a reroute is smarter than opening the slab.
Related services
Thermal Imaging Leak Detection
Infrared cameras reveal temperature patterns on walls, floors and ceilings that can point to hidden moisture and hot-water leaks.
Tracer Gas Leak Detection
A safe tracer gas introduced into a drained line escapes at the leak point and is detected at the surface — ideal for tiny or silent leaks.
Think you have a hidden leak?
The sooner a leak is confirmed and located, the less water is wasted and the less damage spreads. Call now, or send a short request and describe what you are seeing.
Open 24 hours, 7 days a week · 1065 Westminster Ave, Alhambra, CA 91803