Plumbing Leak Detection Services

A rising water bill or a damp patch on the wall often means water is escaping somewhere you can't see. California Plumbing Pros provides plumbing leak detection services that pinpoint hidden leaks in walls, floors, slabs, and underground lines—before they cause serious damage.

Fast Scheduling

Find the leak before damage spreads.

Pinpoint Accuracy

We locate the source, not just the symptom.

Minimal Disruption

Targeted access means less damage to repair.

Clear Next Steps

We explain repair options after detection.

Leak Detection Services That Save Water and Damage

A hidden leak doesn't announce itself. Water quietly seeps behind drywall, under flooring, or beneath a concrete slab, damaging materials and driving up your bill for weeks before you notice. By the time you see visible signs, the repair is often larger than it needed to be.

Our plumbing leak detection services use non-invasive tools to locate the source precisely. That means targeted repairs instead of opening walls and floors to hunt for the problem.

  • Leaks inside walls and ceilings
  • Slab leaks beneath concrete floors
  • Underground and main water line leaks
  • Fixture and supply line leaks
Plumber using leak detection equipment to locate a hidden leak

Signs You Have a Hidden Leak

One sign alone can be a coincidence. Several together usually mean water is escaping somewhere.

Higher Water Bills

A jump with no change in habits is one of the clearest clues.

Meter Keeps Moving

If the meter runs with all fixtures off, water is leaking somewhere.

Damp Walls or Ceilings

Discoloration, bubbling paint, or soft spots point to water behind the surface.

Musty Odors

A persistent damp smell can indicate hidden moisture and possible mold.

Warped Flooring

Cupping, buckling, or warm spots on the floor can signal a slab leak.

Sound of Running Water

Hearing water move when nothing is on is a strong indicator of a leak.

How Our Leak Detection Process Works

We narrow down the location step by step, so repairs can be precise.

1

Assess the Symptoms

We review your signs and history, then test the water meter and system pressure.

2

Locate the Leak

Acoustic listening, thermal imaging, and other tools pinpoint the source without guesswork.

3

Recommend Repair

We explain what we found and the best repair options, including targeted access if needed.

Leak detection tools being used to find a plumbing leak

What Our Leak Detection Covers

We detect leaks across the systems that most often fail silently, and we document the location for the repair that follows.

  • Water meter and pressure testing
  • Acoustic listening for hidden line leaks
  • Thermal imaging to spot moisture differences
  • Slab leak and underground line location
  • Clear findings to guide the repair

Once we locate the leak, we can move straight into water leak repair, slab leak repair, or water line repair as needed.

Related Plumbing Services

Leak detection is usually the first step. These services handle the repair.

Plumber repairing a water leak

Water Leak Repair

Repair for leaking pipes, fixtures, and fittings once the leak is located.

Learn more
Slab leak repair beneath a home floor

Slab Leak Repair

Repair for leaks beneath your home's foundation slab.

Learn more
Water line repair outside a home

Water Line Repair

Repair for broken main or supply lines outside the home.

Learn more

Leak Detection Across California

California Plumbing Pros provides leak detection services for homeowners statewide.

Leak Detection FAQs

Common questions about finding and fixing hidden water leaks.

How do I know if I have a hidden water leak?

Common signs include an unexplained rise in your water bill, a water meter that keeps moving when nothing is running, damp or discolored walls and ceilings, musty odors, warped flooring, and the sound of running water when fixtures are off.

How does plumbing leak detection work?

We use a combination of methods such as acoustic listening equipment, pressure testing, thermal imaging, and camera inspection to narrow down and confirm the location of a leak without unnecessary demolition.

Can leak detection find a slab leak?

Yes. Slab leaks are one of the most common hidden leaks we locate. Detection helps pinpoint the leak so repair can be targeted. See our slab leak repair page for more detail.

Will you have to break into my walls or floors?

Our goal is to locate the leak precisely so any access needed is as small as possible. Detection comes first, which minimizes guesswork and unnecessary damage.

How much water can a small leak waste?

Even a slow leak can waste a significant amount of water over time and raise your bill. Left unchecked, it can also damage framing, drywall, flooring, and foundations.

Do you offer leak detection near me?

We provide plumbing leak detection services for homeowners across California. Call (800) 390-6351 to schedule an inspection.

Think You Have a Hidden Leak?

Find it before it causes more damage. Call California Plumbing Pros to schedule professional leak detection services.