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.
Alhambra, CA · San Gabriel Valley
Leak Detection in Alhambra, CA
Alhambra Leak Pros identifies hidden water leaks using the diagnostic method that fits your property — acoustic listening, thermal imaging, tracer gas and camera inspection — so water loss is confirmed and located before any repair work begins, reducing unnecessary exploratory damage.
Open 24 hours, 7 days a week · 1065 Westminster Ave, Alhambra, CA 91803
Why homeowners choose a specialist
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Specialist diagnosis
Leak detection is the whole job here — not a side service. The visit is structured around proving and pinpointing the loss.
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Non-invasive methods
Acoustic, thermal, tracer-gas and camera methods locate leaks from the surface, reducing unnecessary opening of floors and walls.
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Findings explained
You hear what was tested, what the readings mean, and how confident the conclusion is — including when a result is uncertain.
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Located & documented
Confirmed leak locations are marked, and moisture or commercial surveys are documented for repairs, owners or insurers.
Four diagnostic methods
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.
Video Camera Pipe Inspection
A push-camera travels inside accessible drain and sewer lines, showing roots, cracks, offsets and blockages on screen in real time.
All leak detection services
Fifteen services, from detection methods to location services, pool and sewer inspection, commercial surveys and — where a pipe genuinely qualifies — repair options. Each service page explains what it investigates, its limits, and what you receive.
Detection Methods
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.
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.
Video Camera Pipe Inspection
A push-camera travels inside accessible drain and sewer lines, showing roots, cracks, offsets and blockages on screen in real time.
Pipeline Pressure Testing
Isolating a line and monitoring its pressure confirms whether it leaks, and which section — hot or cold, inside or outside — is responsible.
Leak Location Services
Slab Leak Detection
Locating leaks in supply lines under a concrete slab — using meter confirmation, line isolation and acoustic, thermal or tracer-gas pinpointing.
Wall and Ceiling Leak Detection
Tracing stains, bubbling paint and damp plaster back to their true source — which is often not directly behind the visible damage.
Underground Main Line Leak Detection
Pinpointing leaks in the buried service line between the water meter and your home — without digging up the yard to search.
Emergency Water Shut-Off & Isolation
Calm, practical help for active leaks: stopping the water safely, isolating the affected line, and locating the failure.
Pool, Sewer & Pipe Inspection
Pool and Spa Leak Detection
Separating normal evaporation from real water loss, then testing shell, fittings, equipment and plumbing to find where pool water is going.
Sewer and Drain Line Tracking
Camera inspection plus surface locating: know exactly where your sewer line runs, how deep it is, and where each defect sits.
Commercial Investigations
Commercial Water Loss Surveys
A systematic investigation of unexplained water loss in commercial buildings, HOAs and multi-unit properties — zone by zone, documented.
Structural Moisture Mapping
Measuring and documenting exactly where building materials are wet, how wet they are, and how far the moisture has spread.
Pipe Repair & Rehabilitation
Trenchless Pipe Relining
Renewing a damaged drain or sewer line from the inside with a cured-in-place liner — when the pipe is a suitable candidate.
Targeted Spot Pipe Repair
Repairing one identified defect — a cracked joint, a root entry point, a single damaged section — instead of replacing the whole line.
Signs you may have a hidden water leak
- Unexplained increase in your water bill
- Water meter moving when no water is being used
- Warm spots on flooring
- Damp walls, ceilings or baseboards
- Running-water sounds with everything off
- Persistent wet areas outdoors
- Reduced water pressure
Individual symptoms do not always prove a leak. A proper investigation — starting with a meter test — is what separates a leak from its many imitators.
Start with these guides
7 signs of a hidden water leak in your Alhambra home
Water bill suddenly high? How to check for a hidden leak
How to identify a possible underground water line leak
How the process works
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Explain the symptoms — tell us what you have noticed.
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Confirm the loss — meter and isolation testing prove whether water is being lost, and where in the system.
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Pinpoint it — the diagnostic method is selected for your pipe, property and evidence.
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Explain & document — findings, marked locations and next steps, in plain language.
Residential & commercial applications
Residential leak detection
Hidden supply, slab and wall leaks in Alhambra homes — confirmed and located non-invasively.
Underground service lines
Meter-to-house lines traced and pinpointed from the surface, with irrigation ruled out by isolation.
Pool & spa water loss
Evaporation separated from leakage with the bucket test, then shell, fittings and plumbing tested.
Sewer & drain inspection
Camera inspection and line tracking show roots, cracks and offsets — with positions marked on the ground.
Commercial water loss
Zone-by-zone surveys for commercial buildings, HOAs and multi-unit properties, fully documented.
Moisture documentation
Structural moisture mapping records exactly how far water has spread through building materials.
Serving Alhambra & the San Gabriel Valley
Our primary city is Alhambra — including Downtown Alhambra, Emery Park, Midwick Tract, Alhambra Hills, Bean Tract, Airport Tract and Mayfair Tract — and we serve surrounding communities including San Gabriel, Monterey Park, South Pasadena, San Marino, El Sereno, Rosemead and Pasadena.
Helpful guides
7 Signs of a Hidden Water Leak in Your Alhambra Home
A hidden leak rarely announces itself with a puddle. It shows up as a pattern of small clues — a bill, a sound, a warm patch of fl…
Water Bill Suddenly High? Is a Hidden Leak the Cause?
A suddenly high water bill is one of the most common reasons people call us — and a hidden leak is only one of several possible ca…
Pool Losing Water? Leak vs Evaporation: The Bucket Test Guide
Every pool loses water to evaporation, and on a hot, windy Alhambra week the loss can look alarming. Before paying for leak detect…
Frequently asked questions
What are the most common signs of a hidden water leak?
A rising water bill, a meter that moves with all water off, warm spots on flooring, damp walls or ceilings, running-water sounds, wet areas outdoors and reduced pressure. One sign alone does not prove a leak — a meter test confirms whether water is being lost.
What is the difference between leak detection and leak repair?
Detection proves whether a leak exists and pinpoints where it is, non-invasively. Repair is the separate step that fixes the pipe. Locating first means any repair opening is small and in the right place.
Which detection method will be used at my property?
The method follows the evidence: acoustic listening for pressurised lines, thermal imaging for hot-water lines and moisture patterns, tracer gas for quiet or deep leaks, and camera inspection inside drain and sewer lines. Sometimes two methods are combined.
What should I do before a visit?
If you can, note your recent water bills, avoid using water before a meter test, and clear access to the meter, water heater and any suspect area. For an active leak, shut off the water first — see our emergency guide.
Do you serve areas outside Alhambra?
Yes — Alhambra is our primary city, and we serve surrounding San Gabriel Valley communities listed on our Service Areas page, including San Gabriel, Monterey Park, South Pasadena, San Marino, Rosemead and Pasadena.
Water is actively leaking right now — what should I do?
Shut off the water at the fixture valve or the house main, keep clear of water near electrics, and call +1 626-898-6221. Our emergency shut-off guidance walks through the steps calmly.
Request leak detection service
Prefer to write it down? Send a short request with what you are seeing — a rising bill, a warm floor, a stain, a wet patch — and we will respond. For anything active or urgent, calling is faster.