Hidden & wall leaks
Located without needless demolition.
Leak Detection
Leak Detection & Repair in Vancouver, WA
A hidden leak driving up your water bill or damaging your home? We find leaks fast, slab, wall, or underground, and repair them before they get worse.
★★★★★5.0 · 744 Google reviewsLicensed & insuredEmergency & scheduled service
Licensed & InsuredWA & OR licensed
Upfront Flat-Rate PricingKnow the price first
Emergency & Scheduled ServiceAvailability confirmed when you call
Local & Family-OwnedBased in Vancouver, WA
Services we handle
What we do
The most expensive leaks are the ones you can't see, behind a wall, under a slab, or in the line running to your home. Left alone, they waste water, spike your bill, and quietly cause rot and mold. We locate them precisely, so the repair is targeted instead of tearing the house apart guessing.
Once we've pinpointed the leak, we fix it and explain what caused it, whether it's a single fitting or a sign the pipes are due for more attention. Straight answers, no scare tactics.
Slab leaks
Pinpointed and repaired under concrete.
Underground & water-line leaks
From the meter to the house.
Pipe & fitting repair
The failed section fixed properly.
High-bill investigations
Track down what's wasting water.
Honest next steps
Repair now, and whether the pipes need more.
When to call
Signs of a hidden leak
- A water bill that jumped for no clear reason
- Damp spots, warm floors, or the sound of running water
- A musty smell or mold with no obvious source
- The water meter moves with everything turned off
How the service works
How a hidden water leak is narrowed down
Leak detection is a process of eliminating systems and locations before opening finishes. Meter behavior, pressure, fixture use, moisture patterns, and the building layout guide the next test.
Confirm that water is being lost
The technician reviews the bill or symptom, checks meter or well-system behavior, isolates fixtures and branches where possible, and distinguishes supply water from drainage or exterior moisture.
Narrow the source with targeted tools
Moisture readings, pressure tests, acoustic listening, thermal patterns, inspection openings, and fixture testing may be used according to the suspected leak and building materials.
Expose only what is needed and verify
Once evidence supports a location, access is planned around the likely repair. The corrected system is tested again so stopping the leak is confirmed rather than assumed.
Diagnosis before recommendation
The source changes the repair
Water appearing in one place can begin somewhere else entirely.
Pressurized supply or drain leak
A supply leak can continue when fixtures are off. A drain leak may appear only when a specific sink, tub, toilet, or appliance is used.
Plumbing or building-envelope water
Roof, window, siding, groundwater, and condensation can mimic plumbing leaks. Testing should support the source before a plumbing repair is sold.
Inside piping or service line
Meter and isolation tests can help distinguish water lost between the utility and house from water lost in the home's distribution system.
Home base + regional coverage
Vancouver is home. Our service area reaches farther.
True Plumbing is based in Vancouver, where our team, reputation, and service operation are centered. We also serve nearby communities across southwest Washington and the east Portland metro.
Vancouver & Clark County
Crawlspaces, slabs, and seasonal weather change the clues
Vancouver-area homes include raised floors with crawlspaces, slab sections, basements, additions, and exterior service lines. Rain and groundwater can complicate moisture patterns, so weather timing and whether the meter moves are useful evidence.
Home base · Primary service areaVancouver, Washington
Dedicated coverage for downtown, the waterfront, east Vancouver, and surrounding neighborhoods, backed by a local shop off NE 60th Way.
Explore Vancouver plumbingVancouver-area communities
East & north Clark County
East Portland metro
Appointment availability varies by address and schedule. Not sure whether your property is covered? Call (360) 207-6064 and we will confirm it before you plan around us.
What neighbors say
Rated 5.0 stars by 744 customers
5.0
★★★★★
★★★★★
Our water main burst and Jason came out fast and replaced the entire line within 72 hours. The quick response saved us from major damage and high water bills.
D
Diana C.
Summary of Google feedback
★★★★★
Eric was quick to dig down to the leak, and quick to find and fix it. Very pleasant to work with, I'll call True Plumbing any time.
K
Kathy M.
Summary of Google feedback
★★★★★
Nick came on a Sunday to repair our broken PEX pipe, which was leaking severely. He explained everything he was doing and did a great job, friendly, efficient, and thorough.
M
Mike K.
Summary of Google feedback
Helpful guides
Learn more before the visit
Clear answers connected to this service, written for Vancouver-area property owners.
Detecting Hidden Water Leaks Before They Become Emergencies
Hidden leaks run up your bill and rot your home before you notice. Learn the warning signs, the simple meter test, and where leaks usually start.
Read the guideWhen Is the Best Time to Repipe Your House?
Wondering if it's time to repipe? Learn how Clark County pipe materials, leak patterns, remodeling, and pressure symptoms affect the decision.
Read the guideWhat to Do in the First Minutes of a Plumbing Emergency
Prepare exposed pipes before a Clark County freeze and follow conservative shutoff, electrical, and gas-safety steps during an active plumbing leak.
Read the guideMore we do
Related plumbing services
Good to know
Leak questions
How can I check for a hidden water leak at home?
Turn off fixtures and water-using appliances, then observe whether the meter's leak indicator or reading continues to move. Confirm that irrigation, toilets, softeners, humidifiers, and ice makers are not cycling before assuming the movement is in a concealed supply pipe.
Does a high water bill always mean there is a pipe leak?
No. A bill can rise because of irrigation, household-use changes, rate changes, a running toilet, appliance cycles, estimated readings, or a private service-line leak. Comparing meter movement and isolating fixtures helps narrow the cause before opening walls or ground.
What are the signs of a slab leak?
Possible signs include unexplained meter use, warm or damp flooring, the sound of running water, pressure changes, moisture at a slab edge, or damage without a visible fixture leak. Those symptoms can have other causes, so the supply and drain systems need to be isolated.
How do plumbers find leaks without opening every wall?
Diagnosis starts with the meter, shutoffs, pressure behavior, fixture isolation, visible moisture, plumbing layout, and the difference between supply and drain symptoms. Depending on the situation, targeted acoustic, thermal, moisture, camera, or line-locating tools may narrow the access area.
Could the moisture be rain or drainage instead of plumbing?
Yes. Roof and window leaks, groundwater, grading, irrigation, condensation, and foundation drainage can resemble a plumbing leak. Timing with rainfall, meter movement, water temperature, odor, and whether moisture appears during fixture use help separate the likely sources.
What affects the cost of hidden-leak repair?
Location, access, pipe material, whether the leak is on a supply, drain, fixture, slab, wall, crawlspace, or underground line, and the finish or excavation needed all affect scope. Accurate isolation avoids pricing a broad repair before the failed section is known.
Think you have a leak?
Let's find it fast.
Leak detection and repair across Vancouver and Clark County. Call or request service online.
Open 24 hours · Washington and Oregon licensed · licensed, bonded & insured