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A hidden leak can run for weeks before you see a stain, a spike in your water bill, or warped flooring. AAA Organized Plumbing uses non-invasive leak detection to pinpoint leaks inside walls, under slabs, and in underground lines across Napa, then repairs them with minimal disruption. Call (707) 320-5800 to schedule leak detection.
Finding a leak is often harder than fixing it. We combine the right detection tools with experienced technicians so we open only the wall, floor, or yard section that needs it. From a dripping supply line to a leaking water main under the driveway, we locate the source, explain the repair options, and restore your plumbing.

Acoustic listening equipment, thermal imaging, and moisture meters let us trace leaks inside walls, ceilings, and floors without guesswork or unnecessary demolition.

For homes built on concrete slabs, we locate leaks in the supply lines below the floor and recommend the least disruptive fix, whether that is a spot repair, rerouting the line, or repiping the affected section.

A leak between the meter and your home can waste a large amount of water and soften the ground. We locate the break and repair or replace the service line.

Isolating and pressure testing sections of the plumbing system confirms whether a leak exists and narrows down where it is before any wall or floor is opened.

We repair leaking copper, galvanized, PEX, and PVC pipes, failed fittings, shutoff valves, toilets, faucets, and supply lines, using quality parts matched to your system.

We install smart water monitors and automatic shutoff valves that watch your water flow and can shut off the supply when a leak is detected, which is especially valuable for vacation rentals and second homes.
Napa’s mix of historic homes, newer slab-built subdivisions, and hillside properties creates a few recurring leak patterns.

Many older Napa homes still have galvanized steel or early copper supply lines. Galvanized pipe corrodes from the inside, and older copper can develop pinhole leaks over time.

The 2014 South Napa earthquake and seasonal soil movement put stress on buried and in-slab piping. Joints that shifted years ago can start leaking long after the event.

Homes built on slabs in Napa, American Canyon, and nearby communities have supply lines running under the concrete, where a small leak can go unnoticed until flooring, walls, or the water bill show it.

Pressure that is too high wears out valves, fittings, and appliance connections faster. We test your pressure and install or replace pressure regulators when needed.

A leak in a home that sits empty between guests or visits can run for days. Smart shutoff valves and periodic inspections help protect these properties.

Landscaped Napa properties often have long irrigation runs and hose bibs that crack or leak underground, adding to water bills without an obvious sign.
If you notice any of these, call us before the damage spreads.

A water bill that climbs without any change in how you use water is one of the most reliable signs of a hidden leak.

Turn off every fixture and appliance, then watch the meter. If it keeps moving, water is escaping somewhere in the system.

Discoloration on ceilings or walls, bubbling paint, and cupped or soft flooring usually mean water is leaking behind the surface.

A warm area on a tile or concrete floor can indicate a leaking hot water line under the slab.

Hearing water running when nothing is on, especially at night, points to a leak inside a wall, floor, or underground line.

Persistent musty smells or mold in cabinets, closets, or along baseboards are often caused by a slow, hidden leak.
Our process is designed to locate the leak accurately, keep repairs as small as possible, and give you clear pricing.

We confirm the leak using your water meter and a visual inspection of fixtures, appliances, and accessible piping.

Acoustic, thermal, and moisture tools narrow down the exact location before anything is opened.

We explain what we found and give you written options and pricing, from a spot repair to rerouting or repiping.

We open only what is needed, repair the leak with quality materials, and pressure test the system to confirm it is sound.

If pressure, pipe material, or fixtures put your home at risk of future leaks, we tell you and explain the options.

You receive notes and photos of the repair, which can help with insurance claims when water damage is involved.
We bring deep experience in older lateral lines, modern trenchless equipment, and full familiarity with the regulatory landscape across the wine country. Our team holds proper licensing, provides written documentation, and stands behind every project completed. Here is what sets our sewer work apart:

Local Knowledge
Our crew understands the historic clay pipe, expansive clay soils, and earthquake-affected infrastructure unique to properties in the area.

Trenchless Expertise
We invest in CIPP lining and pipe bursting equipment that protects landscaping, driveways, and hardscaping on premium properties.

Transparent Pricing
Every estimate is written, itemized, and reviewed before work begins, with no surprise charges added at completion.

Workmanship Guarantee
Every sewer repair and replacement carries a documented warranty under CA License #1118193
Beyond underground sewer work, our team handles a wide range of residential and commercial plumbing needs across the wine country. From everyday fixture repairs to full system upgrades, we serve as one dependable source for property owners. Here is the rest of what we offer:
Our plumbing crew travels throughout Napa Valley and the southern North Bay to deliver dependable service to a wide customer base. We work in towns large and small, from Carneros and American Canyon to Calistoga. Here are the communities where we provide regular service:
We use acoustic listening equipment, thermal imaging, moisture meters, and pressure testing to pinpoint the leak before opening anything. That usually means one small access opening instead of exploratory demolition.
A slab leak is a leak in a water line that runs beneath a concrete foundation. Depending on the location and pipe condition, we repair it by opening the slab at the leak, rerouting the line through walls or the attic, or repiping the affected section.
Turn off all water in the home and check your water meter. If it is still moving, you likely have a leak. Other signs include a rising water bill, stains, warm spots on floors, and the sound of running water.
For vacation rentals, second homes, and properties with a history of leaks, a smart monitor with an automatic shutoff valve is a worthwhile investment. It can stop the water supply when it detects a leak, limiting damage while no one is home.
Coverage depends on your policy and the cause of the leak. Sudden, accidental leaks are often covered, while gradual leaks may not be. We provide documentation and photos you can share with your insurer.
Yes. We regularly work on older homes with galvanized, cast iron, and early copper piping, and we recommend repiping only when repeated leaks or pipe condition make it the better long-term value.
For all your plumbing needs throughout Northern California, trust your local Napa plumber at AAA Organized Plumbing.