Water Leak Detection Las Vegas, NV
Professional water leak detection in Las Vegas without tearing up your home. We use hydrogen tracer gas, acoustic equipment, and thermal imaging to pinpoint slab leaks and underground line leaks to within a few feet before any concrete is cut. Nevada licensed, 25 years in the trade.
Find the Leak Before It Finds Your Foundation
A water bill that jumps for no clear reason is often the first sign of a hidden leak. Water escapes inside walls, under concrete slabs, and through underground supply lines, sometimes for months, before a homeowner notices. The longer it runs, the more it costs you in wasted water and the more damage it does to your foundation and your home.
MG Drain Services LLC offers professional water leak detection in Las Vegas to find and fix the source fast. We locate the exact leak point using non-invasive technology, so we cut concrete or dig soil only at the precise spot the leak is, not across your whole yard or floor. That saves you money on the repair and protects your property.
Our Hydrogen Tracer Gas Leak Detection Method
The most accurate way to pinpoint a hidden leak in a pressurized water line is tracer gas detection, and it is the method that sets our water leak detection apart from plumbers who rely on listening equipment alone.
How Tracer Gas Detection Works
We isolate and drain the suspect water line, then charge it with a 5% hydrogen and 95% nitrogen tracer gas mixture. Hydrogen is the smallest molecule there is, so it escapes through even a microscopic crack or pinhole in the pipe. Because hydrogen is lighter than air, it rises straight up through soil, asphalt, and concrete to the surface.
We then sweep the area with a calibrated hydrogen sensor. Where the gas surfaces, the sensor alarms, and the highest reading marks the leak. This locates the leak within roughly a 3-foot area, which means the repair is targeted and the digging or concrete cutting is kept to a minimum.
The gas is completely safe. At 5%, the hydrogen blend is certified non-flammable and non-toxic, because hydrogen does not become combustible until it exceeds 5.7% concentration. The nitrogen is an inert carrier. It is a green-label gas approved for residential leak detection.
Tracer gas works where acoustic detection cannot. On plastic pipe, on deep underground lines, in noisy environments, or when a leak is too small to make a sound, the gas still finds it. We often confirm an acoustic or thermal reading with tracer gas to be certain before we cut.
The Equipment We Use: Jacob's MC Sniffer430
We detect the tracer gas with the Jacob's MC Sniffer430, a professional-grade hydrogen leak detector built specifically for pinpointing water leaks in underground, underfloor, and in-wall piping. It is one of the most sensitive tracer gas detectors available, and it is what lets us find leaks other plumbers miss.
- Detects hydrogen down to 1 PPM. The sensor reads hydrogen concentration at a resolution of a single part per million, so even a tiny pinhole leak registers clearly.
- Works on any pipe material. It locates leaks in both plastic and metal piping, including the PEX and copper lines common in Las Vegas homes.
- Finds leaks under any surface. Soil, grass, stone pavers, wood floors, ceramic tile, and concrete. The gas rises through all of them and the sensor catches it at the surface.
- Locates in-wall leaks without contact. The Sniffer430 finds leak sources inside walls, behind furniture, and in hard-to-reach areas without opening anything up first.
- Detects at significant depth. Deep underground supply lines that acoustic equipment struggles with are well within its range.
This is the same class of equipment used by professional leak detection specialists. Most general plumbers do not carry it, which is why a leak that has stumped someone else is often a straightforward find for us.
Water Leak Detection Methods We Use
No single tool finds every leak. We combine methods to confirm the location before any repair begins.
Hydrogen Tracer Gas
The most precise method for pressurized lines, slab leaks, and underground pipe. The Jacob's MC Sniffer430 pinpoints the source within about 3 feet.
Acoustic Listening
Sensitive ground microphones pick up the sound of water escaping under pressure through soil and concrete.
Thermal Imaging
Infrared cameras detect temperature differences from escaping water, useful for hot water slab leaks.
Meter and Pressure Testing
We isolate sections of the system and watch the meter to confirm a leak exists and narrow down its location.
Stop Guessing. Find the Leak.
We locate the source before we cut. Targeted repair, minimal damage.
📞 (702) 480-8070Our Leak Detection Process
Confirm the Leak
We check your meter and pressure-test the system to confirm a leak exists and determine whether it is on the supply side, the slab, or an underground line.
Isolate the Line
We narrow the leak to a specific line or zone, then drain and seal that section so the tracer gas stays contained to the suspect pipe.
Pinpoint With Tracer Gas
We charge the line with the hydrogen and nitrogen mixture and sweep the surface with a sensor until the exact leak point is marked.
Report and Repair
We show you the location, explain the options, and give a written estimate. We repair slab leaks, supply lines, and underground pipe in-house.
Signs You Have a Hidden Water Leak
If you notice any of these, call for a water leak detection visit before the damage grows:
- A water bill that rose without a change in your usage
- The sound of running water when every fixture is off
- Warm spots on the floor (a sign of a hot water slab leak)
- Low water pressure throughout the house
- A water meter that keeps moving with all fixtures shut off
- Cracks in the foundation or in interior walls
- Damp, musty, or moldy areas with no obvious source
- Unexplained wet spots in the yard or a section of lawn that stays green
Las Vegas slab leaks: Many valley homes sit on post-tension concrete slabs. Tracer gas lets us locate a slab leak without breaking the floor to look for it. When a repair does require cutting concrete, we plan the cut carefully around the post-tension cables. Hard water also corrodes copper supply lines from the inside over time, which is a common cause of pinhole slab leaks in older Las Vegas and Henderson homes.
Water Leak Detection FAQ
How do you find a water leak without digging up my yard or breaking my floor?
We use non-invasive methods first: hydrogen tracer gas, acoustic listening equipment, and thermal imaging. The tracer gas method pinpoints the leak within about a 3-foot area before any concrete is cut or soil is dug, so excavation is targeted to the exact spot instead of exploratory digging.
Is the hydrogen tracer gas safe to use in my home?
Yes. We use a 5% hydrogen and 95% nitrogen mixture that is certified non-flammable and non-toxic. Hydrogen does not become combustible until it exceeds 5.7% concentration, so the 5% blend is a green-label, non-combustible gas that is safe for residential use.
What are the signs of a hidden water leak?
A water bill that rises without a change in usage, the sound of running water when nothing is on, warm spots on the floor, low water pressure, a water meter that keeps moving when all fixtures are off, cracks in the foundation, or unexplained damp or musty areas.
Can you detect leaks under a concrete slab?
Yes. Slab leaks are one of the most common calls we get in older Las Vegas homes. Hydrogen tracer gas rises through concrete and soil, so we can pinpoint a slab leak without breaking the floor first. Once located, any concrete cutting on a post-tension slab is planned carefully around the tensioning cables.
What equipment do you use to find leaks?
We use the Jacob's MC Sniffer430, a professional hydrogen tracer gas detector that reads hydrogen down to 1 part per million. It locates leaks in plastic and metal pipe under soil, tile, wood, concrete, and inside walls. It is the same class of equipment used by dedicated leak detection specialists, and most general plumbers do not carry it.
Do you offer leak detection service in Spanish?
Yes. All services are available in English and Spanish. Se habla español.
Schedule Water Leak Detection in Las Vegas
Mon-Sat, 7 AM to 5 PM. Same-day appointments often available. Se habla español.
📞 (702) 480-8070Related Plumbing Services
MG Drain Services LLC | Nevada C-1d Plumbing Contractor License | BBB Accredited | Family-Owned and Operated Since 2015
Las Vegas, NV | (702) 480-8070 | Monday-Saturday, 7 AM to 5 PM