How Leak Detection Works for Hidden Plumbing Leaks

Step 1: Confirm There's Actually a Leak

The classic test: shut off every fixture and appliance, then check your water meter. If it's still moving, water is leaving the system somewhere. Reviewing recent water bills also helps establish a baseline.

Step 2: Narrow Down the Area

Visual clues — warm spots on the floor, water stains on ceilings, mold smells, or wet exterior siding — help narrow the search before any tools come out.

Step 3: Acoustic Listening

Sensitive ground microphones and pipe-contact mics can hear the hiss and rush of water escaping a pressurized pipe — even through concrete or under flooring.

Step 4: Pressure Testing

Isolating sections of plumbing and pressurizing them helps confirm exactly which segment is leaking, before any access work begins.

Step 5: Thermal Imaging

For hot-water leaks, infrared cameras show heat trails through walls and slabs that the eye can't see.

Step 6: Pinpoint, Then Repair

The whole point is to localize the leak so the repair opening is as small as possible. From there, the plumbing provider can repair the affected section or recommend a partial repipe if the line is failing in multiple spots.

Frequently Asked Questions

Related Articles