Alameda County · Detection
Pinpoint hidden leaks under concrete foundations without breaking up the whole slab.
Vito J. in Mission San Jose, Fremont noticed a hot spot on the floor, or one area of carpet or tile that's always warm and wasn't sure how serious it was. Fremont's Mission San Jose and Niles districts have some of the city's oldest housing stock, predating the 1956 merger of five smaller communities into modern Fremont, while newer construction near Warm Springs and the BART corridor reflects the area's more recent tech-industry growth. That range means slab leak causes here vary significantly by which of Fremont's five founding communities a home sits in. The water bill stopped climbing the same week the leak was found and fixed.
— Vito J., Mission San Jose, Fremont
Fremont's Mission San Jose and Niles districts have some of the city's oldest housing stock, predating the 1956 merger of five smaller communities into modern Fremont, while newer construction near Warm Springs and the BART corridor reflects the area's more recent tech-industry growth. That range means slab leak causes here vary significantly by which of Fremont's five founding communities a home sits in.
Water service in Fremont is provided by Alameda County Water District, and confirming whether an issue is on your private plumbing or the utility side of the meter is one of the first things we check.
A slab leak happens when a hot or cold water line running beneath your home's concrete foundation develops a crack, pinhole, or corrosion failure. Left alone, it can warp flooring, feed mold behind walls, and quietly inflate your water bill for months. Our technicians use acoustic listening equipment, infrared thermal cameras, and static pressure testing to find the leak's exact position before a single inch of concrete is opened.
Because slab leaks are hidden under structural concrete, guesswork digging is expensive and destructive. We combine electronic amplification with thermal imaging to narrow the leak to a small, marked area, so any follow-up access work is as limited and targeted as possible.
A hot spot on the floor, or one area of carpet or tile that's always warmThe sound of running water when every fixture in the house is offA water meter that keeps spinning with all taps closedUnexplained cracks in flooring, drywall, or the foundation itselfMildew smell or unexplained humidity in ground-floor roomsA steadily climbing water bill with no change in household usageFrom Mission San Jose, Niles, Centerville to Irvington, Warm Springs, Ardenwood, we handle slab leak detection calls across Fremont, matching the approach to each property's age, soil, and layout.
Call or request an appointment online. Same-day slots are available across California for active leaks.
A technician arrives with acoustic listening equipment, thermal imaging, and pressure or camera tools matched to your specific leak type.
The leak's exact location is marked and explained to you in plain terms, so nothing gets opened up on a guess.
You receive a written diagnostic report you can hand to your plumber, restoration team, or insurance company, with repair or fix options discussed on the spot.
“The floor in our hallway had a warm spot for weeks. They found the slab leak in under an hour with the listening equipment and marked a tiny area instead of tearing up the whole hallway. Huge relief.”
“Our water bill jumped for two months straight and we couldn't find why. Turned out it was a slow leak behind the water heater. Professional, on time, and explained everything on the spot.”
“Salt air had corroded a fitting outside near the meter box. They traced it with the acoustic equipment without digging up my whole side yard first. Appreciated the straightforward report.”
“Good experience overall, technician was knowledgeable and thorough. Took a little longer than expected but they were clearly being careful about pinpointing the exact spot before marking it.”
“Old Victorian with plaster walls everywhere, so I was dreading this. They used thermal imaging and found the leak behind one wall panel instead of opening up the whole room. Saved us a big repair bill.”
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