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Home / Services / Leak Detection

Leak Detection in Union, NJ

Not sure where the leak is, only that something is wrong. That is the most common call we get, and it is exactly what leak detection equipment is built to answer.

No-dig detectionSlab & wall leaksMeter diagnostics
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Most people who call about a leak have not seen the leak itself. They have seen a water bill that jumped without an obvious reason, a warm or damp spot on the floor, or a meter that keeps spinning with every fixture in the house shut off. That last test, watching the meter with everything off, is the first thing worth checking before calling anyone, since it confirms whether the leak is inside the house or between the meter and the street.

Union Township's mix of older cast iron and copper plumbing, much of it original to homes built before the 1960s, means hidden leaks show up more often here than in newer construction. We use acoustic and electronic detection equipment to find the source without opening up walls or slabs on a guess.

How We Find It

Detection Methods We Use

Acoustic Listening Equipment

Picks up the sound of pressurized water escaping through a pipe, even under a slab or behind a finished wall.

Pressure Testing

Isolates sections of the plumbing system to narrow down which line is losing pressure before any exploratory work.

Thermal Imaging

Spots temperature differences from a hot water line leak inside a wall or under flooring.

Meter & Line Isolation

Determines whether a leak sits on the house side or the service line between the meter and the street, which changes who is responsible for the repair.

Common Signs

What Usually Brings People To This Page

A water bill that jumped with no change in household water use is the single most common reason people call. Others include a warm patch on a slab floor near a water heater or garage, the sound of running water when every fixture is off, or a musty smell with no visible source. Each of these points to a different likely location, which is why we ask specific questions on the phone before dispatching.

Slab and Under-House Leaks

When The Leak Is Underneath

Homes with slab foundations or crawlspace plumbing sometimes develop leaks at a pipe joint underneath the structure. A warm spot on the floor near where a hot water line runs, or a section of flooring that stays damp for no visible reason, are the classic signs. We locate the exact point before recommending a repair path, which is often a targeted spot repair rather than tearing up an entire slab.

Pricing

What It Costs In Union

Standard leak detection visitAcoustic + pressure testing
$250-$450
Slab leak locationIncludes thermal imaging where needed
$350-$600
Meter/service line isolationDetermines house side vs street side
$200-$350
Leak locationSlab and under-house leaks take longer to isolate than exposed pipe.
Home constructionFinished basements and slab floors add detection time.
AccessCrawlspace access affects how quickly we can pinpoint the source.

Detection cost is separate from repair. Many water utilities, including in Union Township, offer a one-time high-bill adjustment once a confirmed leak is repaired, worth asking about. Want your real number? Call (908) 357-1542.

FAQs

Common Questions

Shut off every fixture and appliance that uses water, then check your water meter. If it keeps moving, there is a leak somewhere in the system.

In most cases yes. Acoustic and thermal equipment locates the leak first, so we cut only where the pipe actually is.

If it is between your home and the water meter, it is generally the homeowner's. Leaks between the meter and the street main are usually the utility's responsibility.

Yes. Slab leaks and leaks in irrigation lines or between the meter and the house often show no visible sign except the bill.

Related Services

Often Needed Together

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