Usually, yes, when the leak is hidden. Non-invasive leak detection finds and marks the leak before anything is opened, so the repair needs one small opening instead of several exploratory holes in tile, concrete, drywall or lawn. It isn't needed when the leak is visible and easy to reach, like a dripping faucet or a running toilet.
“Do I really need to pay someone just to find a leak?” It’s a fair question. The answer depends on one thing: whether you can see the leak. If you can, you probably don’t. If you can’t, detection is usually what keeps the whole job small.
What you’re really comparing
Without detection, a hidden leak is found by opening things up until the water turns up. With detection, it’s found by testing and listening first.
| Searching by opening things up | Non-invasive leak detection | |
|---|---|---|
| How the leak is found | Break tile, cut drywall, dig trenches | Meter test, pressure test, acoustic, thermal, tracer gas |
| Openings | Often several, some in the wrong place | One small opening at the marked spot |
| Collateral repairs | More flooring, concrete, drywall and landscaping | Minimal |
| Time without a kitchen, bathroom or yard | Longer | Shorter |
| Documentation for insurance | Whatever photos you take | Photos, readings and a marked location |
Where detection pays off most
- Slab leaks. Concrete and tile are expensive to break and replace. One accurate opening instead of several makes the biggest difference here. See slab leak detection.
- Leaks inside walls and showers. Tile walls and finished drywall are costly to open blind. See hidden water leak detection.
- Buried water lines. Trenching a whole line through a lawn, driveway or landscaping is a big job. See underground leak detection.
- Pools. Leaks in buried pool plumbing are almost impossible to find without testing each line. See pool & spa leak detection.
When you don’t need it
Save your money when:
- the leak is visible — a drip, a puddle under a sink, a running toilet,
- the source is obvious and easy to reach, or
- a simple meter test and fixture check finds it.
The hidden cost of waiting
A slow leak rarely stays small. Water soaks subfloors, drywall and insulation, and the EPA advises drying water-damaged materials within 24–48 hours to help prevent mold. The longer a hidden leak runs, the bigger the repair and the more water is wasted. The EPA estimates household leaks waste nearly 10,000 gallons a year in the average home (EPA WaterSense).
Questions to ask before you hire
Ask how the company will confirm the leak, isolate the line, pinpoint the spot and document it. Our guide on how to choose a leak detection company lists nine questions, and what affects leak detection cost explains how jobs are priced.
Talk it through
Not sure whether you need detection? Call and describe what you’re seeing. We serve Bargersville and the rest of Johnson County, and we’ll tell you honestly if it sounds like something a plumber can handle directly.
Still can’t find it?
Our professional leak detection pinpoints the leak without tearing things up, so the repair starts in the right spot.
Frequently asked questions
What does non-invasive leak detection mean?
It means the leak is found without cutting, breaking or digging to search. Testing and listening equipment pinpoint the spot first; an opening is made only afterwards, at the marked location, for the repair.
When is professional leak detection not worth it?
When the leak is visible and easy to reach — a dripping faucet, a running toilet or a leaking supply line under a sink. A plumber can usually fix those directly.
Does leak detection help with an insurance claim?
It often does. Photos, readings and a marked location give the adjuster clear documentation of where the water came from.
Can a slow leak really cause much damage?
Yes. A slow leak can run for weeks inside a wall or under a slab, soaking materials and wasting water. The U.S. EPA notes that about 1 in 10 homes has leaks wasting 90 gallons or more per day.