Fresno County · Detection
Locate leaks in buried main water lines and irrigation systems before they surface.
The Choi Family, who lives in Old Fig Garden, Fresno, reached out after noticing reduced water pressure at the house. Fresno's larger residential lots and dedicated irrigation lines mean we often need to determine whether a leak is on the home's main water service or a separate irrigation system before any repair conversation starts. What looked like it might mean tearing out a whole room turned into a same-day, targeted fix once the exact spot was confirmed.
— The Choi Family, Old Fig Garden, Fresno
Fresno's larger residential lots and dedicated irrigation lines mean we often need to determine whether a leak is on the home's main water service or a separate irrigation system before any repair conversation starts.
Water service in Fresno is provided by the City of Fresno Department of Public Utilities, 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.
The main line running from the water meter to your house, along with any underground irrigation lines, can develop a leak long before it ever reaches the surface. Soil often absorbs the water for a while, which means the yard can look normal even as the leak grows. We use acoustic ground microphones and tracer-gas methods to trace buried lines and identify the leak's position without trenching the entire run.
Acoustic correlators listen for the specific sound signature of pressurized water escaping underground, while tracer gas can be introduced into the line and detected at the surface directly above a leak, letting us mark a precise dig site instead of trenching the entire line.
A soft, spongy, or unusually green patch of lawn along the line's pathWater pooling at the surface with no obvious sourceA water meter that keeps registering usage with everything indoors shut offReduced water pressure at the houseSound of running water near the meter box or yard with fixtures offA sinkhole or settling ground above a buried lineFrom Tower District, Woodward Park, Fig Garden to Sunnyside, Bullard, Old Fig Garden, we handle underground & main line leak detection calls across Fresno, 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.
“Our irrigation system was losing water and we assumed it was just old sprinkler heads. Turned out to be a leak in the underground line itself. Glad we called before digging up the whole yard ourselves.”
“Hard water here does a number on pipes. They found a pinhole leak in a joint I never would've guessed. Quick, respectful of the property, and didn't leave a mess.”
“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.”
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