Leak Detection & Leak Repair
Find the Source, Not Just the Stain
A hidden leak can run for days or weeks before you see obvious damage. By the time stains, soft flooring, a musty smell, or a high bill appear, water may already be spreading behind walls, under floors, or beneath a slab. We help homes, rentals, and light commercial properties across the Rogue Valley.
Water often travels away from the source, so the stain you see may not be where the pipe is leaking. Our work focuses on locating the actual failure, explaining the cause, and repairing it before damage spreads. Call +1 (458) 332-0458 if you suspect a hidden leak.
Suspect a Hidden Leak?
Leak detection & repair across Grants Pass and the Rogue Valley.
(458) 332-0458 Call Now Contact UsWhy Grants Pass Plumbing Pros
What We Do
Leak Detection & Leak Repair Services
Leak detection isn’t just about finding water — it’s about finding the actual plumbing failure so the repair can be targeted.
For pipes failing in multiple areas, see pipe repair & repiping; for active leaks, our emergency plumber.
Warning Signs
Signs You May Have a Hidden Leak
Many leaks start quietly. You may not see water pouring out, but the home gives clues. If you notice more than one, don’t ignore it.
Our Toolkit
Leak Detection Methods We Use
Different leaks need different methods. The right approach depends on the symptoms, pipe location, material, and whether the leak is active — together they reduce guesswork.
Water Meter Testing
If all fixtures are closed and the meter still moves, a leak may be present somewhere in the supply system.
Pressure Testing
Isolates sections of the water system. If pressure drops in a section, that section may have a leak.
Thermal Imaging
Reveals temperature differences from water behind surfaces — helpful for hot-water and slab leaks.
Moisture Meters
Confirm where materials are wet, showing how far water has spread and helping locate the source.
Visual Inspection
We check valves, supply lines, fixture and water-heater connections, crawl spaces, cabinets, and toilets.
Why accurate detection matters
Guessing creates unnecessary holes in walls, floors, and slabs. Accurate detection finds the real source instead of the symptom, confirms whether a leak is active, pinpoints supply vs. drain vs. slab, and reduces the chance of repeat water damage.
Under the Slab
Slab Leak Detection & Repair
A slab leak happens when a water line beneath the concrete foundation leaks. It’s hard to see and can get expensive if it isn’t found early.
Possible slab leak signs:
Once located, the repair path depends on pipe location, extent of damage, and the condition of the rest of the system — sometimes a targeted repair, other times rerouting a line or replacing aging pipe.
Where They Start
Common Places Leaks Start
Leaks can begin anywhere water moves through the property, but some locations are far more common than others.
Under sinks & fixtures
Supply lines, shutoff valves, faucet connections, and drain fittings loosen or fail — often damaging cabinets and flooring first.
Behind walls
Water lines leak from fittings, corrosion, nail punctures, or movement. Stains, bubbling paint, and musty smells are common clues.
Ceilings below baths
A stain below a bathroom may come from a supply line, shower valve, toilet connection, tub drain, or failed seal — the stain is just the start.
Water heater areas
Connections, relief valves, and nearby piping can leak. See water heater repair.
Crawl spaces
Pipes leak below the floor where the problem isn’t noticed until there’s moisture, odor, or low pressure.
Underground & yard lines
Wet soil, pooling water, or unusually green grass can point to a buried water-line leak that needs careful location.
Once We Find It
Leak Repair Options
The repair should match the cause. We explain what failed, why it failed, and what makes sense for the property.
How We Work
Our Leak Detection Process
A clear path from symptoms to a confirmed repair — narrowing the search before we open any surface.
Listen & Inspect
We ask about symptoms and look for moisture patterns.
Test the System
Meter, pressure, thermal imaging, or moisture readings.
Locate the Source
We narrow the search and explain what the evidence shows.
Recommend Options
The best way to stop the leak and prevent recurrence.
Repair the Leak
We fix the issue and confirm the system operates properly.
Next Steps
If water-damage restoration is needed, we explain what to consider.
Who We Help
Leak Detection for Homes, Rentals & Businesses
A hidden leak can damage tenant spaces, customer areas, storage rooms, and office finishes — not just single-family homes.
Single-family homes
Find and fix leaks before they spread.
Rental homes
Protect the property and tenant spaces.
Small apartments
Catch leaks across multiple units.
Offices & shops
Avoid damage to finishes and stock.
Restaurants & light commercial
Protect operations from water damage.
Remodels & inspections
Check moisture and aging lines early.
Older Grants Pass homes
Past repairs, aging valves, corroded sections, and mixed pipe materials create different failure points. We factor in the home’s age and how water moves — not a one-size approach.
Before a remodel or sale
A good time to check for hidden moisture, aging supply lines, and weak valves before new cabinets, flooring, or tile — and to avoid surprises for buyers and sellers.
Reduce the Damage
While You Wait for Help
Water spreads into drywall, insulation, framing, and flooring. A few steps limit the damage before service begins.
Shut off the fixture valve if the leak is at one fixture
Shut off the main water valve for a larger leak
Move belongings away from the wet area
Avoid using electrical outlets near water
Document visible damage if needed
Keep the area clear for inspection
For active flooding or a burst line, use our emergency plumbing service.
Related Plumbing Services
Leak repair often connects to other plumbing services:
Leak Detection Near Grants Pass
Also serving Medford, Central Point, Ashland & Jacksonville — see all service areas.
Questions & Answers