Emergency Leak Detection & Slab Leak Repair in Chandler, AZ
Most Chandler homes are built on slab foundations. That means a leaking supply line usually isn't visible - it's under a few inches of concrete. A slab leak in Chandler often traces back to polybutylene pipe. That pipe was installed during the city's big building boom of the 1980s and 90s. It degrades from the inside as chlorine in the municipal water breaks down the plastic over decades. We use electronic leak detection to find the leak's location before any concrete is opened, instead of guessing.
Signs You Might Have a Slab Leak
You don't need to see water to have a slab leak. Watch for a warm spot on an otherwise cool floor. A hissing sound near the slab when no fixtures are running is another sign. So is an unexplained jump in the water bill. Flooring that stays damp or develops a musty smell for no obvious reason is worth noting too. Any one of these signs is worth a professional leak detection call before the damage spreads.
A Quick Way to Confirm It Before You Call
If your water bill jumped or you suspect a hidden leak, check your water meter. Turn off every fixture and appliance in the house, including the ice maker and any irrigation timer, then watch the meter's small leak indicator dial. If it's still turning, or the meter is still running with everything off, that points to a leak somewhere in the system rather than normal usage. It doesn't tell you where the leak is, but it confirms there is one worth a professional detection visit.
What to Do While You're Waiting
If the leak is significant or you aren't sure how bad it is, shut off the main water valve until a technician arrives. That stops the loss without guessing at the source. Keep kids and pets away from any wet or warm flooring, since a slab leak can heat the surface above it. If you can, note when you first noticed the warm spot, sound, or bill increase, since that timeline helps narrow down the cause. There's no need to pull up flooring or dig into the slab yourself. That's exactly what the detection visit is for.
How We Find a Leak Without Opening the Slab
Electronic leak detection listens for the acoustic signature of water escaping under pressure. It cross-references that signature with the home's actual plumbing layout. This narrows the leak to a specific location before any concrete is touched. We combine that with pressure testing to isolate which line is losing water, hot or cold, and which run. Guessing wrong means opening the wrong section of floor.
The same approach works whether the leak is under an interior room, under a driveway, or under a side yard. Access takes a bit longer where the slab sits under a vehicle-rated driveway rather than carpet or tile, but the detection method doesn't change. We mark the pinpointed location clearly once it's confirmed, so there's no ambiguity about where the access point needs to go.
It's common for us to be called in after a different plumber already tried and couldn't pin down the location. A missed leak usually means the first visit relied on visual inspection alone, or didn't isolate hot and cold lines separately during testing. We start that kind of call with a fresh pressure test rather than assuming the earlier diagnosis was on the right track.
Once we've confirmed the location, there are generally two paths. One is a targeted slab penetration to access and repair that exact section of pipe, since we handle the repair ourselves rather than only locating the leak and sending you elsewhere. The other is a reroute that runs a new line through the attic or walls instead of back through the slab. Which one makes sense depends on the pipe's age and material, and on how many other sections are likely to fail next. We'll walk through both options with you before you decide. A home that old may have a polybutylene run nearing the end of its life. In that case, a reroute often makes more sense than repeat repairs.
Polybutylene Pipe and Chandler's Building Boom
Chandler's population grew dramatically during the 1980s and 90s as tech employers like Intel expanded in the area. Polybutylene resin pipe was standard supply-line material industry-wide during much of that window. It was inexpensive and easy to install, but it wasn't built to last indefinitely. Chlorine in municipal water slowly breaks the material down from the inside. Pipes installed during that era are now well past the point where failure becomes more likely than not. When one section fails, it's often a sign the rest of the run isn't far behind. That's part of why we talk homeowners through rerouting instead of patching just the one leak we found.
What It Typically Involves
| Situation | Typical Approach | Usual Timeframe |
|---|---|---|
| Warm spot or hissing sound, no visible water | Electronic leak detection, pressure test | Same visit for diagnosis |
| Confirmed single-point slab leak | Targeted slab access and repair | 1 to 2 days depending on access |
| Older polybutylene home, recurring leaks | Reroute discussion (attic/wall bypass) | Scheduled, multi-day project |
| Unexplained water bill increase | Full-system pressure test | Same visit |
Questions Chandler Homeowners Ask
Electronic leak detection equipment listens for the sound signature of escaping water. Combined with pressure testing, it narrows the leak to a specific section, usually a few feet, not the whole slab. That happens before any concrete is opened.
It isn't illegal to have in your home. It's no longer installed in new construction, though, because of its known failure pattern over time. If your Chandler home was built in the 1980s or 90s, it's worth having the supply lines checked.
Coverage varies by policy and carrier. Some cover the cost to access and repair the leak but not the underlying pipe replacement. Check your specific policy, since we can't speak for what your insurer covers.
It depends on the pipe's age and material. If it's polybutylene from the same era as the leak we just found, a full reroute is often cheaper. That's true in the long run compared with repairing recurring leaks one at a time. We'll lay out both options with real numbers before you decide.
It depends on how accessible the suspected area is and whether detection turns into a same-visit repair. We give a clear price before any work begins, once we've seen the home and talked through what you're noticing.
Often, yes, if the access point is straightforward and the repair doesn't need a reroute. We'll tell you at the time of diagnosis whether the fix can happen that same visit or needs to be scheduled as its own project.
Electronic detection itself doesn't disturb concrete or landscaping. Once we've pinpointed the leak, access to a driveway or yard location is more involved than carpet or tile, but we keep the opening as small as the repair allows.
Yes. A missed leak is usually a sign the first visit didn't isolate hot and cold lines separately or relied on visual inspection instead of acoustic and pressure testing together. We start fresh rather than assuming the earlier diagnosis was correct.
Yes. We coordinate directly with tenants, property managers, or landlords on scheduling and access, and we can discuss findings and next steps with whoever is authorized to make the call on repairs.
Related: When a Clog Looks Like a Leak
Occasionally what looks like a slab leak turns out to be condensation or a slow drain leak instead of a supply-line failure. If you're not sure which you're dealing with, check our drain cleaning page. It covers the more common drain-side causes of unexplained moisture.
Emergency Leak Detection & Slab Leak Repair in Chandler, AZ
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