Can you find a leak under a concrete slab?

Yes. Slab leaks are among the most common calls we take, and acoustic detection combined with pressure isolation is specifically how they are located without breaking concrete to look.

Do you have to cut into walls to find the leak?

Detection itself is non-invasive — that is the entire point of doing it before any demolition. Access is only opened at the confirmed leak location, which keeps both the repair and the restoration as small as possible.

Leak Detection

Water Leak Detection

Find the leak before you open the wall, not after.

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A hidden water leak is expensive in two directions at once: the water you are paying for, and the damage it is quietly doing behind a wall, under a slab or beneath the yard. The costly mistake is opening up finished surfaces to hunt for it. Locating the leak precisely first is what keeps a repair small.

We use acoustic listening equipment to hear pressurised water escaping a line, along with pressure testing to isolate which line is losing water and thermal and moisture readings to narrow the position. On underground and slab leaks that combination usually gets us to a specific location rather than a general area — which is the difference between opening one section of floor and opening a room.

The most common trigger for a call is a water bill that jumped without a change in usage. If your meter is still moving with every fixture in the house shut off, you have a leak on the pressurised side, and the sooner it is located the smaller the repair.

Licensed plumber using a wrench to repair a fixture in a Maryland home

Signs you need this

A water bill that rose sharply with no change in household usage
The water meter continues moving with every fixture turned off
Warm spots on a floor slab, or the sound of running water with nothing on
Damp patches, staining or a musty smell on walls, ceilings or floors
Persistently soggy ground in the yard during dry weather

How we do it

01
Confirm
Meter test and pressure isolation to prove there is a leak and narrow the line.
02
Listen
Acoustic equipment tracks the escaping water to a specific position.
03
Pinpoint
Cross-check with thermal and moisture readings, then mark the spot.
04
Repair
Targeted access to the leak only — the smallest opening that does the job.

Water Leak Detection — common questions

The simplest test costs nothing. Shut off every fixture and water-using appliance in the house, then watch the water meter. If it is still creeping, water is going somewhere it should not be. A sharp unexplained bill increase is the other classic signal.