Slab Leak Detection in Phoenix — Find It Before It Finds You
A warm spot on the floor. A water bill that jumped $80. The sound of water running when everything is off. These are slab leak symptoms. We find it without tearing up your floor.
Slab leaks are the kind of problem that whispers before it screams. A warm spot on the floor. A water bill that jumped $80 for no reason. The sound of water running when everything is off.
By the time you see wet floors or wall damage, the leak has usually been running for weeks. The longer it runs, the more it costs to fix.
Brian McQuistion Plumbing & Drain uses electronic detection equipment to find slab leaks without tearing up your floor. We locate the leak first — then we talk about the repair.
Why Slab Leaks Are Common in Phoenix
Phoenix soil expands and contracts with temperature and moisture — dramatically. The desert climate means dry soil for months, then monsoon saturation, then back to dry. That constant movement puts stress on the copper pipes embedded in your concrete slab. Combine that with Phoenix's hard water corroding pipes from the inside and you have two forces working against your plumbing at once.
Homes built between 1970 and 1995 are particularly susceptible — they have older copper pipe that's been taking that abuse for decades.
Signs You Might Have a Slab Leak
- Hot spot on your floor (warm to the touch for no reason)
- Sound of running water when nothing is on
- Water bill spiked without a change in usage
- Wet or damp flooring with no visible source
- Mold or mildew smell near floor level
- Cracks appearing in walls or flooring
How We Find It
We use electronic leak detection equipment — acoustic sensors, pressure testing, and thermal imaging — to locate the leak without opening your floor. Once we know exactly where it is and how bad it is, we walk you through the repair options: direct access repair, rerouting the line above the slab, or whole-house repiping if the system is broadly compromised.
Frequently Asked Questions
The detection inspection itself runs $200 to $400. Repair costs depend on the location, depth, and severity — direct repairs start around $500 to $800. If the pipe needs to be rerouted or the situation calls for repiping, we'll scope that separately with full pricing before any work begins.
No. A slab leak running under your foundation erodes soil, cracks concrete, and can cause structural damage that costs far more to fix than the leak itself. It also creates moisture conditions that breed mold. Call us as soon as you suspect one.
It depends on your policy. Most homeowners insurance covers sudden and accidental water damage — meaning the damage caused by the leak. The repair to the pipe itself is typically not covered. We'll document everything thoroughly so you have what you need for your insurance claim.
It could be. Other causes include a running toilet, a dripping outdoor hose bib, or an irrigation system leak. But a slab leak is worth ruling out — especially if you also hear running water when nothing is on. We can inspect and confirm either way.
Yes. Homes built with copper pipe in that era have been subject to 40 years of Phoenix soil movement and hard water corrosion. It doesn't mean you have a slab leak, but it means the pipes are at the age when they start to fail. If you've never had an inspection, it's worth a look.