Liberty Plumbing
Painted illustration of a plumber listening for a hidden leak with acoustic equipment on a tiled floor
Plumbing Service

Electronic Leak Detection

A hidden leak in an Arizona slab or wall wastes water and feeds mold long before you ever see a sign of it. We find leaks without tearing your house apart. Acoustic sensors, thermal imaging, line pressure tests. That way we open the wall or slab at one spot, not five. We find the real problem first, then we fix it.

Book onlineOr call, 24/7(623) 473-0555

Same-day on most calls. Upfront pricing before any work.

What it costs: Flat-rate detection fee, credited toward the repair if you have us fix what we find. You pay once for locating the leak, not twice.

Signs you need leak detection

  • Water bill climbing with no change in use
  • The meter dial moving with every fixture off
  • Musty smell, warm floor spots, or unexplained damp drywall

How we handle it

  1. Confirm there's a leak

    A meter test verifies an active leak before we hunt for it.

  2. Pinpoint it

    Acoustic and thermal tools narrow it to a precise location.

  3. Hand off to repair

    We give you the exact spot and a repair quote, slab, supply line, or fixture.

What to know about leak detection in Arizona

Leak detection is the skill that keeps you from tearing up your house for no reason. The whole point is to find the leak's exact spot before anybody opens a wall, slab, or yard. The tools are specific. Electronic acoustic gear amplifies the sound of water escaping under pressure. Pressure testing isolates a line and watches whether it holds. Thermal imaging shows the temperature difference from hot-water leaks behind a surface. Tracer gas slips through the smallest opening and gets sniffed out up top. Each one fits a different job, and good detection means picking the right one instead of guessing.

The hardest leaks are the silent ones, and Arizona's slab homes hide them well. A leak under the slab, inside a wall, or in an irrigation line can run for months, padding your bill with no water in sight. The clues come at you sideways: a water meter that creeps when every fixture is off, a bill that jumps for no reason, a warm spot or musty smell that won't quit, paint or baseboards that buckle, or a patch of foundation that stays damp. The sooner you chase these down, the smaller the repair and the less mold and structural risk you're carrying.

There's a simple test every homeowner can do that narrows things down fast. Turn off every water fixture and appliance in the house, then watch the water meter. If the flow indicator (often a small red triangle or dial) is still moving, water is escaping somewhere on your side of the meter. To split indoor from outdoor, shut the valve where the supply enters the house and check again. If the meter keeps moving, the leak's between the meter and the house, often in irrigation or a hose line. If it stops, it's inside.

Pool and irrigation leaks are an Arizona category of their own. With pools in a huge share of Valley yards and extensive drip systems fighting the heat, a lot of 'mystery' high bills trace back to outdoor lines, a leaking pool, or a stuck irrigation valve rather than the house plumbing. Detection isolates the system at fault before you spend a dollar fixing the wrong thing. There's no sense opening a slab when a cracked drip line in the yard is the real culprit. Pinpointing the source first is what makes the repair cheap and correct.

Leak Detection across Arizona

We provide leak detection throughout the Phoenix metro and Northern Arizona high country:

AnthemAvondaleBellemontCarefreeCave CreekChino ValleyDesert HillsDewey-HumboldtFlagstaffFountain HillsGlendaleGoodyearKachina VillageMayerMountainaireMunds ParkNew RiverNorth PhoenixParadise ValleyPaysonPeoriaPhoenixPonderosa PinesPrescottPrescott ValleyScottsdaleSilverleafSun CitySun City WestSurpriseTempeTroonWickenburgWilliams

Leak Detection, frequently asked

Can you find a leak without breaking anything?
Yes, that's the whole point of electronic detection. We find it first, then open exactly one spot.
My bill doubled, is it always a slab leak?
Not always. Could be an irrigation line, a running toilet, or a pool. We check the whole system.
How do you find a leak without tearing things apart?
We use acoustic listening equipment, pressure isolation testing, thermal imaging, and sometimes tracer gas to pin down the exact spot first. The whole point is to open one small, correct spot instead of tearing into walls or slab while we hunt.
How can I tell if I have a hidden leak?
Watch for a water bill that jumps with no change in how you're using it, a meter that moves when everything's off, a warm spot on the floor, a musty smell, or buckling paint and baseboards. Those indirect signs are how slab and in-wall leaks give themselves away.
Is there a leak test I can do myself?
Yes. Shut off every fixture and appliance, then look at whether the water meter's flow indicator is still moving. If it is, you've got a leak. Shut the valve where water comes into the house and check again, and that tells you whether it's inside the home or outside in the irrigation.
Could my high water bill be the pool or sprinklers, not the house?
Very possibly. In the Valley, pools and big drip irrigation setups are common sources of mystery high bills and water loss. Detection isolates which system is leaking first, so you're not opening a slab when a cracked irrigation line out in the yard is the real problem.
How urgent is chasing down a hidden leak?
Don't wait. A silent leak under a slab or in a wall wastes water around the clock, runs up your bill, and can grow mold or undermine the foundation. The sooner we find it, the smaller and cheaper the repair and the less collateral damage you're left with.

Same-day serviceUpfront pricing before any work

(623) 473-0555Book a visit