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Is your monthly water bill increasing without an explanation? Does your water meter continue moving after you’ve turned off all the water in your home? If so, you may have a hidden leak somewhere in your home. These leaks are quite elusive and can pose a real challenge to the untrained eye. That’s why you need the help of a trustworthy plumbing service.

Hidden water leaks can go undetected for weeks or even months, leading to high water bills, mold growth, and structural damage. It’s advisable to have a qualified plumber in Broward County inspect your plumbing regularly to identify potential water leaks and root causes before further damage occurs.

In this post, the team at Mr. Rooter Plumbing explains how plumbers find hidden leaks without destructive digging.

Moisture Meters

Plumbers often use pinless moisture meters to determine whether moisture is present in materials such as drywall, flooring, and concrete. As the name implies, these devices use electromagnetic sensors to calculate the moisture level on surfaces. In other words, they detect abnormally high moisture levels in various materials.

If the moisture readings are above 15% to 20%, that confirms the possibility of an active leak that requires urgent intervention. These devices eliminate guesswork from leak detection and provide accurate percentage readings. A dependable plumber should be able to read the findings accurately, interpret them, and offer solutions.

Thermal Imaging Cameras

An active water leak changes the temperature of the surrounding material. Thermal imaging cameras detect the surface temperature differences caused by the water escaping from the pipes. These cameras cool or warm damp spots that point to a leak. For example, a wet surface that has been saturated by cold water will appear as a dark or blue anomaly on the camera’s display. On the other hand, a hot water leak will show up as a bright, warmer zone.

Acoustic Leak Detection

One of the most effective tools plumbers use is an acoustic leak detector. Even a tiny leak behind a wall creates sound as water escapes under pressure through a crack or pinhole. You may hear these sounds when your house is quiet, but most of them go unnoticed, which is why you need help from a local plumbing service.

Highly sensitive listening equipment amplifies these sounds, allowing plumbers to detect leaks hidden behind walls, beneath concrete slabs, or underground. By comparing sound levels at different locations, they can identify the leak with impressive accuracy.

Video Pipe Inspection

If you’ve ever scheduled a leak detection service, you have probably seen the plumber insert a rod into the affected pipe. Plumbers use high-resolution, waterproof cameras to view the interior of a leaking pipe in order to determine the cause of the leak and where the leak is occurring.

The camera attached to a rod is fed into the pipe, and it transmits HD video to a monitor. The plumber uses the footage to visually identify cracks, loose joints, and other issues that cause leaks. Just like the other methods we’ve highlighted, video pipe inspection allows plumbers to eliminate destructive digging, thereby saving property damage and repair expenses.

Tracer Gas Testing

If acoustic tools and thermal aging cameras fail, plumbers can drain the pipe and pump in a safe, non-toxic tracer gas. As the gas escapes the pipe and rises through the wall, specialized electronic sniffers detect it, identifying the leak's location.

Pressure Testing

Sometimes the plumbing system itself provides the biggest clue. A plumber may isolate sections of the water supply and perform pressure tests. If pressure drops when a section is closed off, it indicates water is escaping somewhere within that portion of the system. This method helps narrow the search before more advanced equipment is used. The ideal water pressure for a home normally ranges from 40 to 80 PSI. If it drops below 40 PSI, you’ll know something is off. Reach out to a professional plumbing service for an inspection and find out if the culprit is a hidden leak.

Contact Mr. Rooter Plumbing Today for Water Leak Detection and Repair

If you’ve suspected a water leak behind a wall, it’s a good idea to have it fixed as quickly as possible. You don’t want to lose more water and incur costly expenses on structural repairs. At Mr. Rooter Plumbing, we specialize in trenchless leak detection and repair. Whether you’re dealing with an underground leak or a leak behind a wall, our plumbers have the tools to find it and fix it without destructive digging. Call us now to book a convenient appointment!

Jul 16, 2026

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Customer Reviews

Our plumber was excellent he came out probably even on a holiday and did exactly what he was supposed to do. You also informed us and let us make the decisions. We will definitely happen again

Wonderful company.  Never talked me into something i didn’t need.  I recommended this company to a friend of mine.  No hidden fees.  Pictures were taken and were showed to me with a simple to understand explanation. Kitchen plumbing was leaking all over the floor and even managed to seep through the walls to the sidewalk.I highly recommend Mr. Rooter!

Service was excellent. Came in hour after calling. Did a very good job. Darrel was very good and very polite. I didn’t expect it to cost that much but like I said I’m very grateful for the job being done so quickly and good job.

Delvin arrived quickly on a Sunday for water fsu ets that needed to be replaced. He was timely and professional and I was happy with his work. I will be calling on their services again!