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Gilbert Plumbing

Home/Leak Detection

Leak Detection — Gilbert, AZ & the East Valley

Find the leak before it becomes real damage

Non-invasive detection methods locate hidden leaks — including slab leaks tied to Gilbert's shifting caliche soil — so repairs stay targeted instead of exploratory.

Plumber performing leak detection inspection in a Gilbert, AZ home

What's Included

Non-invasive methods that pinpoint the source

We layer detection methods together to confirm a leak's exact location before recommending any repair — especially important for under-slab leaks.

Acoustic leak detection

Specialized listening equipment picks up the sound of water escaping under pressure, even through concrete, drywall, or soil — pinpointing a leak's location without guesswork.

Pressure testing & isolation

Isolating sections of your plumbing system and monitoring pressure drop tells us definitively whether a leak exists and roughly where it lives before any digging or opening walls.

Video camera inspection

A camera scoped through accessible lines confirms pipe condition, corrosion, and joint failures visually, backing up acoustic and pressure findings with a direct look.

Slab leak detection

Specialized methods for leaks beneath the concrete foundation slab — the most Arizona-specific leak scenario — locating the exact point of failure before we recommend any demolition.

Warning Signs

Signs of a hidden leak

Hidden leaks rarely announce themselves loudly. Watch for these signs, especially in combination:

  • An unexplained spike in your water bill with no obvious change in usage.
  • The sound of running water when every fixture in the house is off.
  • A warm or unusually damp spot on the flooring — often a sign of a leaking hot water line under the slab.
  • Damp carpet, baseboards, or drywall with no visible source nearby.
  • A musty or mildew smell that won't go away, especially near flooring or interior walls.
  • New cracks in flooring, walls, or the foundation, or noticeably low water pressure throughout the house.

Gilbert's caliche soil problem

Much of Gilbert and the East Valley sits on caliche — a dense, calcium-cemented soil layer — combined with expansive clay that swells and contracts with moisture. Summer heat dries and shrinks the soil; monsoon rain rehydrates and expands it. That cycle puts real, repeated stress on water lines running beneath the slab, and over years it's a leading cause of the pinhole leaks that show up as warm spots or unexplained water bill spikes.

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Suspect a hidden leak? Let's find it.

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Common Questions

Leak detection FAQ

How much does leak detection cost?

Cost depends on the suspected leak location and which detection methods are needed — a straightforward accessible-pipe leak is quicker to isolate than a suspected slab leak. We give you a flat, upfront price for the detection visit before we start, and if repair work follows, that's quoted separately and clearly.

Can you really find a leak without tearing into my walls or slab?

In most cases, yes. Acoustic listening equipment, pressure isolation testing, and camera inspection let us narrow a leak down to a specific location without opening anything up first. We only recommend cutting into drywall or the slab once we're confident about where the leak actually is, which keeps repair work targeted instead of exploratory.

Why are slab leaks common in Gilbert specifically?

Much of Gilbert sits on caliche and expansive clay soils that shift seasonally as they absorb and lose moisture — expanding after monsoon rain and contracting during Arizona's extreme summer heat. That movement puts ongoing stress on copper and PEX water lines running beneath the foundation slab, and over years it can lead to pinhole leaks at stress points or pipe penetrations.

Does insurance cover slab leak repair?

It varies by policy and by whether the damage is considered sudden versus gradual, so we'd recommend confirming directly with your homeowners insurance provider. What we can do is document the leak location, cause, and extent of any related damage to support a claim.

How long does a leak detection visit take?

A typical accessible-pipe leak can often be isolated within an hour or two. A suspected slab leak investigation, which may involve multiple detection methods across the home, usually takes longer — we'll give you a realistic estimate once we understand the symptoms you're seeing.

Don't let a small drip become a big repair

Call now or request a quote and we'll get a technician out to find exactly what's leaking and where.