Slab Leak Detection
Investigate the signs of a possible leak beneath your concrete slab and find out where the problem is most likely located.
Listening for the leak
Acoustic Leak Detection
Water forced through a break in a pressurized pipe makes a sound. Acoustic leak detection uses sensitive ground microphones and amplifiers to follow that sound through flooring and concrete and find where it is strongest.
- Non-Invasive Detection Options
- Acoustic & Electronic Equipment
- Focused Leak Location
- Residential & Commercial Properties
When acoustic detection is a good fit
Acoustic methods are widely used for pressurized supply-line leaks, particularly when:
- Water loss has been confirmed and the affected line identified
- The leak is on a metal line, which carries sound well
- You or the technician can hear faint running water in a quiet house
- The floor area above the line can be accessed and surveyed
- Results from other methods need to be confirmed
Acoustic detection is not the right tool for every leak. Plastic pipe and very noisy environments can limit it, so we combine methods when needed.
How acoustic leak detection works
When pressurized water escapes through a crack or pinhole, it creates vibration in the pipe and the surrounding material. As the Southwest Florida Water Management District explains in describing utility leak detection, pressure forces water through a breach and sends vibrations along the pipe, and listening devices convert those vibrations into sound.
In a home, a technician places a ground microphone or contact sensor at intervals along the suspected pipe route and listens through headphones, often with an amplifier and filters. The leak area is typically where the sound is loudest and has the right character.
Pipe material matters. Dense metals such as copper transmit leak sound farther than plastic, which absorbs vibration more quickly. Flooring, depth, and background noise also play a role. That is why acoustic detection is usually part of a broader diagnostic assessment and is often paired with electronic leak detection.
What you can expect
- Confirmation of water loss and identification of the affected line
- A quiet environment — we may ask to pause appliances or HVAC
- Listening at intervals along the likely pipe route
- Comparison of signals to locate the loudest area
- A marked leak area and explanation of findings
Honest about limitations. Acoustic detection depends on hearing the leak. Plastic pipes, deep lines, thick padding, very small leaks, and background noise can all make that harder. We will let you know if conditions limit what acoustic methods can tell us.
Why Locating the Leak First Matters
Accurate detection gives you better information before any repair decision.
Non-invasive
Listening happens from the floor surface — no opening up concrete to search.
Pinpoint the strongest signal
Comparing sound at multiple points helps narrow the leak area.
Cross-check results
Acoustic findings can confirm or refine what other methods suggest.
How the Process Works
A step-by-step approach from your first call to clear findings.
Describe the concern
Tell us what you are noticing, where, and when it started.
Initial assessment
We review the symptoms and check fixtures, the water heater, and the meter.
Locate the leak
We isolate lines and use suitable equipment to narrow down the leak area.
Findings & next steps
We explain what we found, how confident we are, and your options.
Frequently Asked Questions
Common questions about acoustic leak detection.
It often sounds like a faint hiss, rush, or steady running-water noise. It can be hard to hear without equipment, especially through carpet and padding or in a noisy home.
It helps. We may ask you to pause appliances, fans, or the HVAC system for short periods so faint leak sounds are easier to hear.
Generally, yes, though each floor type transmits sound differently. Carpet and thick padding can dampen sound. We adjust our approach to the flooring in your home.
Very small leaks produce less sound and can be harder to locate. Combining acoustic listening with other methods improves the chances of narrowing them down.
It can be very effective in suitable conditions, but no method guarantees a precise location in every home. We explain our confidence level and any factors that could affect the result.
Other Detection Services
Related services that may be relevant to your situation.
Under-Slab Water Leak Detection
Targeted investigation of pressurized water lines that run below the foundation, to narrow down the leak area before any access work.
Electronic Leak Detection
Electronic detection equipment that helps amplify and interpret leak signals that are hard to pick up without specialized tools.
Leak Location & Diagnostic Assessment
A structured assessment that brings the symptoms, plumbing layout, and test results together into clear findings and next steps.
Learn More Before You Call
Practical guides to help you understand what you are seeing and what comes next.
Detection
How Professional Slab Leak Detection Works
What actually happens during professional leak detection — the common methods, what each one can and cannot tell you, and why the approach varies from home to home.
Detection
What to Expect During a Slab Leak Inspection
A walk-through of a typical slab leak inspection, what you will be asked, how to prepare your home, and what you should have in hand when it is done.
Warning Signs
10 Warning Signs of a Slab Leak in Your Home
The ten symptoms most often linked to slab leaks, what each one can (and can't) tell you, and a simple way to decide when it's time for a professional assessment.
Concerned About a Hidden Slab Leak?
Tell us what you have noticed. We will talk through the symptoms, explain how an assessment works, and help you decide on the right next step.