Leak Detection in Corona

Your water bill jumped $80 last month, but nothing looks wet. No dripping faucet, no soggy drywall, no obvious puddle under the sink — just a meter that keeps spinning when every fixture in the house is shut off. That gap between what you can see and what’s actually happening inside your walls, slab, or yard is exactly what leak detection is designed to close. The longer a hidden leak runs undetected, the more it saturates framing, corrodes pipe joints, and invites mold into spaces you can’t easily reach.

What leak detection actually involves

Modern leak detection is less about guesswork and more about listening. Electronic amplification equipment picks up the acoustic signature of pressurized water escaping a pipe — a sound that travels through concrete, soil, and framing in ways a human ear alone can’t isolate. Thermal imaging cameras reveal temperature differentials where moisture has migrated behind drywall or under flooring without breaking the surface. Tracer gas methods push a non-toxic hydrogen/nitrogen blend through a line and detect where it surfaces, which is especially useful for underground supply lines and pool plumbing buried under hardscape.

A thorough inspection also starts at the meter. Watching the meter’s low-flow indicator with all fixtures closed confirms whether a leak is active and gives a rough sense of volume loss per minute before any equipment is deployed. From there, the search narrows zone by zone — isolating the main line, then branch lines, then fixtures — until the signal concentrates at a specific location. Most residential leak detections in the Corona area are completed in two to four hours, though slab leaks under post-tension foundations or leaks in complex commercial plumbing can take longer.

Our process

1. Meter and pressure baseline — Before any equipment goes on the ground, we shut off all fixtures and read the water meter. A spinning low-flow dial confirms an active leak; a pressure gauge test on the main line tells us whether we’re dealing with a supply-side loss or something downstream of the PRV.

2. Zone isolation — We close valves systematically to divide the system into segments. When the meter stops moving after a valve closes, the leak is upstream of that valve. This narrows the search area before acoustic or thermal tools are deployed, saving time and reducing unnecessary surface investigation.

3. Electronic and thermal scanning — Ground microphones and amplified listening rods are placed at intervals along the suspected line. Thermal imaging runs along walls, ceilings, and floors where moisture migration is possible. We correlate both data sets — acoustic peak plus thermal anomaly — before marking a location.

4. Pinpoint marking and documentation — Once the leak location is confirmed, we mark it precisely and document with photos and a written report. That report includes the suspected pipe type, depth estimate, leak volume, and recommended repair method — the same documentation your insurance adjuster will want to see.

5. Repair coordination — Detection and repair are handled by the same licensed crew (License #997337), so there’s no handoff delay. We discuss the repair approach with you before any cutting, coring, or excavation begins.

What separates a good leak detection from a bad one

The most common mistake in leak detection is skipping zone isolation and going straight to acoustic scanning across the entire property. Without narrowing the search first, background noise from traffic, HVAC equipment, and neighboring plumbing creates false signals that lead to unnecessary slab cuts or wall openings in the wrong location.

A second frequent problem is confusing a slow slab leak with condensation or a roof intrusion. Both produce moisture in similar floor zones. Good operators cross-reference the meter test (which rules out roof and condensation sources entirely) before committing to a slab diagnosis.

For insurance purposes, adjusters typically want to see a written leak detection report that identifies the leak location, the pipe affected, and the approximate flow rate or pressure loss. A verbal “we found it” isn’t enough to support a claim for consequential water damage. RT Olson documents every detection with photos, meter readings, and a written scope — the paperwork that keeps your claim moving.

What does leak detection cost?

Typical costs run from a few hundred dollars for a straightforward fixture or supply-line trace to several thousand for complex underground or slab leak detection requiring multiple methods. Most homeowners pay somewhere in the ranges below, though every loss is different — RT Olson Plumbing, Heating and Air Conditioning provides a written scope before any work begins so you know exactly what you’re authorizing.

Homeowners insurance typically covers sudden and accidental water damage caused by a hidden leak, and many policies will reimburse the cost of the detection itself when it’s required to locate a covered loss — review your policy’s “tear-out” or “access” endorsement, and ask your adjuster before assuming it isn’t covered.

Seasonal and regional considerations

Corona’s clay-heavy soils expand and contract significantly between the wet season and the long dry stretch that follows. That soil movement puts lateral stress on underground supply lines and can reopen joints that were borderline for years. Post-tension slab construction — common in Inland Empire tract homes built from the 1980s onward — complicates slab leak repairs because cutting into a post-tension slab without knowing cable locations creates serious structural risk. Detection accuracy matters more here than in areas with conventional slabs, because a mismarked location isn’t just an inconvenience.

Hot summers also drive homeowners to run irrigation systems hard, which is when buried lateral lines and valve manifolds tend to fail. A spike in your LADWP or Western Municipal Water District bill during July or August is worth investigating before the wet season hides the evidence under seasonal groundwater.

Service area

RT Olson Plumbing, Heating and Air Conditioning is based in Corona and serves surrounding communities including Norco, Eastvale, Riverside, Chino Hills, Ontario, and Rancho Cucamonga. Each city has its own mix of housing vintages, foundation types, and water provider billing cycles — details that matter when you’re trying to figure out whether a high bill is a leak or a rate change. Dedicated service pages for each city are linked from the navigation above.

If your water meter is moving and you can’t find the reason, call (951) 344-5596 to schedule a leak detection — we’re available 24/7 and can typically get eyes on the problem the same day.