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Copper water lines, shut-off valves and an inline treatment cartridge on a finished assembly

West Orange, NJ · Licensed #13345

Leak Detection in NJ

Non-invasive leak detection finds hidden water leaks fast, before mold and damage. Licensed NJ plumber, northern NJ.

  • NJ Master Plumber #13345
  • Bonded & Insured
  • 4.9★ · 238 Google reviews
  • 24-Hour Service Mon–Sat

Prefer to talk? Call or text (908) 376-9159

  • NJ Master PlumberLicense #13345 · 36BI01334500
  • Bonded & Insured
  • Backflow Certified
  • Navien Certified
  • OSHA Certified
A wall-mounted condensing combi boiler with copper primaries, green-handled zone valves and gas piping

Licensed & local

Licensed Leak Detection in NJ

Maccabi Plumbing & Heating pinpoints hidden water leaks across NJ using non-invasive acoustic, thermal, and moisture equipment, before they cause mold and structural damage inside your walls and floors. If your water bill jumped for no reason, you hear water running with everything shut off, or a warm or damp spot has shown up on a floor or ceiling, there's a good chance water is escaping somewhere you can't see it. Here's a test most homeowners don't know they can run themselves. With every fixture in the house turned off, watch your water meter. If it's still moving, you have a hidden leak, and you know it before anyone opens a single wall. We're a licensed NJ Master Plumber operation (License #13345), so we don't just find the leak, we repair it.

A whole-house filter housing and water meter on the incoming service line in a northern New Jersey basement

Think You Have a Hidden Leak? Find It Fast

A hidden water leak is a time-sensitive problem, not a wait-and-see one, because damp materials can grow mold within 24 to 48 hours of exposure (U.S. EPA). Every day a leak runs behind a wall, it feeds rot, ruins drywall and insulation, and adds to a water bill you're already overpaying. Fast detection is the difference between a small access repair and a demolition.

If you're staring at a spreading stain or a wall that feels wet right now, call (908) 376-9159. We'll get out to locate it before the damage spreads.

Two Maccabi Plumbing & Heating branded service vans parked outside a northern New Jersey apartment building

How Do Plumbers Find a Hidden Water Leak?

Plumbers locate hidden leaks non-invasively using acoustic listening equipment to hear water escaping under floors and inside walls, thermal imaging to see the temperature difference moisture creates, and moisture meters to confirm dampness in a surface. The first and simplest step is the water-meter test. With every fixture off, a moving meter confirms a leak exists and hints at how big it is. Together these pinpoint the spot before any wall is opened.

Each tool has a job, and knowing when to use which is the difference between a clean find and a wild-goose chase. Acoustic listening is the workhorse for pressurized supply lines, because escaping water makes a distinct sound the equipment amplifies. Thermal imaging shines when a hot-water line is leaking or when moisture has cooled a section of wall, showing the plume as a temperature shift. Moisture meters confirm and map how far dampness has traveled through a material once we're close. And the meter test brackets the whole job. It tells us there's genuinely a leak before we spend an hour hunting for one that turned out to be a dripping outdoor spigot.

A brass backflow prevention assembly mounted on the exterior wall of a northern New Jersey home

Leaks We Find and Repair

We find the leaks that hide in the parts of a house you can't inspect, and because we're licensed, we fix them too.

  • In-wall supply-line leaks, the weeping copper or split line behind finished drywall
  • Pinhole copper leaks, the corrosion-driven leaks that plague older northern-NJ copper
  • Slab and under-addition leaks, less common here than down South but real under slab-on-grade additions and sunrooms
  • Buried water-service-line leaks, the line running from the street to the house, out in the yard
  • Fixture and valve leaks, the slow, hidden weeps behind and under fixtures

For a leak in the buried line from the street, that's often a main water line replacement rather than a spot repair, and we'll tell you which it is once we've located it.

A new toilet set out on the bathroom floor part-way through a replacement

What Your Service Visit Includes

Our leak-detection visit follows the same order every time, and the whole point is to cut once, in the right place.

  1. Locate. We start with the meter test and a walk of the likely runs, narrowing where the water is going.
  2. Confirm. Acoustic, thermal, or moisture tools verify the leak is where we think it is, not a false lead.
  3. Pinpoint. We mark the exact spot so any opening is the smallest possible.
  4. Access minimally. If a repair needs an opening, we make one small, precise cut at the source instead of exploratory holes.
  5. Repair. As a licensed NJ Master Plumber, we fix the leak on the same visit whenever the parts and access allow.
  6. Verify. We re-run the meter and re-test the line to confirm the leak is gone before we close up.
A soldered copper tee and shut-off valve on a newly run water line

Why Maccabi

Why Old NJ Homes Get Hidden Leaks

Northern NJ's older homes get hidden leaks because their supply piping is aging out, plain and simple. The pre-1950 colonials around Essex and Morris counties were plumbed in copper or galvanized steel, and both fail in ways you don't see coming. Copper develops pinhole leaks from corrosion, tiny holes that weep for months behind a wall. Galvanized steel rusts from the inside, closing off and eventually splitting. On top of that, NJ's freeze-thaw winters stress the lines and open small splits that don't surface until a spring stain appears on the ceiling.

There's a regional wrinkle worth knowing. Because full basements are the norm in Essex and Morris homes, we don't see the classic slab leaks that dominate Southern plumbing. Hidden leaks here are far more often in-wall supply lines, buried service lines in the yard, or under a later addition. That changes how we approach detection, and it's why generic national leak-detection copy written for slab-heavy markets misses the mark on an old NJ house. If your run of copper keeps springing pinholes, the honest fix is often whole-house repiping, not an endless string of patches.

A wall-hung boiler with a copper zone manifold, circulator pumps and yellow gas piping in a northern New Jersey basement

Pricing, explained

Pricing and What to Expect

Leak detection is a defined, priced diagnostic, not a free guess, and what it costs depends on how hard the leak is to reach and pin down. The main drivers are access difficulty (an open basement run is quick, a leak buried under a finished floor is not), which tools the job needs, and the scope of the repair once we find it. We explain the detection fee and the trip charge up front, before we start, and we'd rather price it honestly than quote a leak we haven't seen. Companies that promise to find "any leak, guaranteed" for a flat fee are usually the ones who tear open three walls to make good on it.

A pair of whole-house water treatment tanks plumbed in blue PEX in a northern New Jersey utility room

Why Maccabi

Why Maccabi

The difference is simple. Detection-only franchises locate your leak, mark it, and hand you a report, then you're on your own to find a plumber. We're a licensed NJ Master Plumber (License #13345), bonded and insured, so we find it and fix it on the same visit. We're rated 4.9 stars across 238 Google reviews, based in West Orange, and we answer emergency calls 24 hours a day, Monday through Saturday (closed Sunday). Non-invasive first, honest pricing, and one licensed pro from the meter test to the verified repair.

Commercial restroom urinals with flush valves and privacy partitions in a northern New Jersey building

Find Your Leak Before It Spreads

A hidden leak only gets more expensive the longer it runs. Call, text, or WhatsApp (908) 376-9159, or book non-invasive leak detection. We'll run the meter test, pinpoint the leak with acoustic and thermal tools, and repair it as a licensed NJ Master Plumber (#13345), all before mold gets a foothold. You can read the EPA's household-leak figures at epa.gov/watersense and its mold-and-moisture guidance at epa.gov/mold.

Know the warning signs

Signs of a Hidden Water Leak

Most hidden leaks announce themselves before they show water, if you know what to watch for.

  • A water bill that jumped with no change in how much you're using

  • The sound of running water when every fixture and appliance is off

  • Warm or damp spots on a floor, especially over a hot-water line

  • Staining or bubbling paint on a wall or ceiling

  • A persistent musty smell in a room or a closet

  • A drop in water pressure that came on gradually

  • A water meter that keeps ticking over after you've shut everything down

That last one is the tell. If the meter moves with the house dead quiet, water is going somewhere, and it's worth a call before it finds your subfloor.

Why it pays to do it right

Benefits of Professional Leak Detection

Finding a hidden leak the non-invasive way means you cut once, in the right spot, instead of opening walls to guess.

  • Detection first, demolition never. Acoustic, thermal, and moisture tools pinpoint the leak so any opening is one small, precise cut at the source.

  • Speed limits the damage. Damp materials can grow mold within 24 to 48 hours (U.S. EPA), so fast location beats a spreading stain.

  • One licensed pro, find and fix. Unlike detection-only franchises that mark the spot and leave, Maccabi (#13345) repairs it on the same visit.

  • We verify the repair by re-running the meter test before closing up, so you know the leak is actually gone.

  • Local housing knowledge shortens the hunt, since full-basement Essex colonials leak in walls and buried lines, not under a slab.

  • Honest, explained pricing up front, no flat-fee "any leak guaranteed" gimmick that ends in three torn-open walls.

A wall-mounted high-efficiency A.O. Smith water heater plumbed in copper in a northern New Jersey basement

Where We Work

We locate and repair hidden leaks across 22 towns in the Essex, Passaic, Morris, Bergen, and Union county corridor, from our West Orange base out to Clifton, Livingston, Montclair, and Springfield. On a wet-basement call in an older West Orange home, knowing the neighborhood's housing stock, mostly full-basement colonials with original copper, tells us where to look before we've even unpacked a tool.

Honest pricing

What Drives Your NJ Price (and Your Written Quote)

We don't hide numbers behind a phone call. Every quote is written and specific, so you know what changes it before we start.

  • The fixture or system involved and its condition
  • Parts, equipment size, and efficiency tier
  • Access, permits, and whether it's an emergency call

Flexible payment / financing available via Klarna.

Get Your Quote Today

Tell us what's going on and we'll give you a clear, written price, no obligation. Virtual estimates available, and we'll call you back as soon as we can.

Call or Text (908) 376-9159

The Maccabi Guarantee

We stand by our work with a 1-year labor warranty, plus the manufacturer's warranty on all parts.

Call or Text (908) 376-9159
Morey Katzourin, Owner & NJ Master Plumber at Maccabi Plumbing & Heating, standing beside a branded company truck in northern New Jersey

Verified credentials

What You Get With a Licensed NJ Master Plumber

  • Licensed NJ Master Plumber (#13345), fully bonded and insured
  • 4.9★ from 238 Google reviews
  • 24-hour response, Mon–Sat, closed Sunday
  • Honest repair-or-replace advice, with the price before we start
  • Backflow, Navien, and OSHA certified

Verified Google reviews

What northern-NJ customers actually said

Maccabi Plumbing & Heating is rated 4.9 stars across 238 Google reviews. These are unedited, published reviews from that profile.

  • What an amazing experience I had with Maccabi! I had a major leak under my sink and they replied the drain with new PVC as needed and they were very reasonably priced amongst competitors however the difference for me was how friendly and attentive the office was to our needs. 10/10
    Naftali F.

    Google review · March 2026

  • Highly recommended! We had a severe leak inside the building caused by a collapsed sewage pipe in a very challenging underground location. They brought in their team, quickly diagnosed the exact issue, and fixed it perfectly. They also made sure to leave the entire area spotless. Since then, they are the only ones I call for any plumbing issue or installation, and every single time they surprise me again with their incredible level of professionalism. Truly exceptional service!
    Ezra

    Google review · June 2026

  • They arrived quickly after I called about a leaking sink valve. The two gentlemen were friendly, polite and very efficient. They resolved the issues quickly and even cleaned up after they were finished. Very satisfied with their service and will be in touch with them for any future plumbing issues.
    John B.

    Google review · May 2026

Read all 238 reviews on Google

Visit / contact

Reach Maccabi Plumbing & Heating in West Orange, NJ

Maccabi Plumbing & Heating

300 Executive Drive
West Orange, NJ 07051

Open 24 hours Monday–Saturday. Closed Sunday.

Emergency line answered nights & early mornings, Mon–Sat.

Street parking is available near our office. Our licensed plumber travels to your property. Most residential and commercial work is completed on site across northern New Jersey.

FAQ

NJ Leak Detection Questions, Answered

24-hour, Mon–Sat availability

Not seeing your question? Call or text and a licensed plumber will talk it through, no answering service run-around.

Call or Text (908) 376-9159

Plumbers locate hidden leaks non-invasively using acoustic listening equipment (to hear water escaping under floors or in walls), thermal imaging (to see temperature differences from moisture), and moisture meters. A simple first step is the water-meter test. With every fixture off, a moving meter confirms a leak. This pinpoints the spot before any wall is opened.

Get Leak Detection Help in NJ Today

Licensed, bonded, and insured, with 24-hour service across northern New Jersey.