We locate hidden leaks without unnecessary demolition — then give you options.
Turn off every fixture and appliance in your home, then watch your water meter for 10–15 minutes. If the dial keeps moving, water is escaping somewhere in your system — even if you can't see or hear it.
A 15–20% jump in your bill without any change in how much water you're actually using is one of the most reliable early warning signs. Slab leaks and pressurized supply line leaks are common culprits here.
If a section of your tile or concrete feels noticeably warmer than the surrounding area — especially in an area where you don't expect heat — it often means a hot water line underneath is losing water.
Hearing water running inside walls or under the floor when no fixture is in use is a clear signal. It's most obvious at night when the house is quiet — a faint hiss or trickling sound that shouldn't be there.
Drywall that feels spongy to the touch, shows visible water staining, or is starting to bubble and peel is a direct indicator of moisture behind the wall. This could be a slow supply line leak or a failed connection at a fixture.
Mold needs consistent moisture to grow. A musty smell localized to one wall, cabinet, or room corner — especially when the rest of the house doesn't smell that way — points to a leak that has been ongoing long enough for mold to establish itself.
We start at the meter and work inward. By isolating the main shutoff and watching the meter behavior, we can confirm water loss is actively occurring and approximately how much. We then isolate hot and cold lines separately using isolation valves to determine which system is losing pressure — narrowing the search significantly before any equipment comes out.
Once we know which line is losing pressure, we use electronic listening equipment to trace the sound signature of water escaping under pressure. Leaks under concrete or behind walls have a distinct acoustic profile — trained equipment picks it up even when the leak is completely invisible from the surface. For hot water line leaks, thermal readings can corroborate the acoustic finding.
Before anything is opened, we mark the exact location of the leak on the floor or wall surface. You know precisely where the work will happen and how much access is needed. We walk you through what we found, what repair options look like, and what each approach will cost — all before a single tile gets touched or a wall gets cut.
Diagnosis before demolition — that's our rule. We don't open walls or jackhammer slabs on a hunch. Every repair we do starts with a confirmed, pinpointed location. That keeps the work targeted, keeps costs predictable, and keeps your home intact wherever it doesn't need to be touched.
Pressurized lines running to fixtures, appliances, and hose bibs. These can fail at joints, at the line itself (pinhole corrosion is common with Maricopa County's hard water), or at shutoff valve connections. Small leaks often go unnoticed until there's visible damage.
Leaks in lines running beneath your home's concrete foundation. These are among the most serious — water erodes the soil underneath over time and can cause structural settlement. Older copper lines under Arizona slabs are especially susceptible due to soil movement and hard water chemistry. See our full Slab Leak page for details on repair methods.
Pinhole leaks, failed joints, or corroded sections inside wall cavities. Acoustic detection localizes the leak to a precise spot, so access is limited to the minimum area needed — not exploratory cutting across entire walls. We make the access, repair the line, and give you a clean patch-ready opening.
Underground irrigation lines and hose bib supply lines can leak steadily without any sign of it reaching the surface — especially in Arizona's dry soil. A consistently soft patch of yard, unusually green areas, or a wet concrete pad are all worth investigating before the water bill tells you the hard way.
Supply lines to toilets, sinks, and appliances — flex connectors, angle stops, and compression fittings — all have a finite lifespan and fail quietly. These are often found under vanities and inside cabinets where they've been dripping for months before anyone opens the door and checks.
The most reliable test you can do yourself: turn off everything in the house that uses water, then watch your water meter for 10–15 minutes. If the dial or digital display shows any movement, water is going somewhere it shouldn't be. A spike in your monthly water bill — especially if it appeared suddenly — is another strong indicator. Warm spots on the floor, running water sounds in the walls, and musty odors in a contained area are all worth calling about. If any of these match what you're seeing, we can confirm it and locate it quickly.
Not until we've located the leak precisely. Our process is detection first, access second. We use acoustic listening equipment to identify the leak's location before any wall or floor is opened. When access is needed, it's surgical — a targeted opening at the confirmed location, not exploratory cutting across a large area. The goal is always minimum disturbance to get to the problem. We'll tell you exactly where access will happen and how large an opening is needed before any work begins.
For pressurized supply lines, electronic acoustic detection is highly accurate — typically within a few inches on accessible lines and within 6–12 inches on lines under concrete. Accuracy depends on the depth of the line, background noise conditions, and the severity of the leak. A larger, more active leak is easier to pinpoint than a slow seep. We'll be upfront about confidence level before any access is made — if there's uncertainty, we tell you, and we adjust the approach accordingly. We don't jackhammer based on a guess.
Slab leaks are a specialized situation and we handle them differently than standard leak repairs. The detection process is similar — pressure testing and acoustic equipment — but the repair decision is more involved. Depending on the line condition, location, and age of your plumbing, the right answer might be direct access through the slab, rerouting the line above grade, or full repipe. We walk through all options with cost ranges before you decide anything. See our Slab Leak Detection page for the full breakdown on methods, pricing, and what to expect.
The longer a leak goes undetected, the more damage it causes. Call us — we'll find it and tell you exactly what it'll take to fix it.
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