San Luis Obispo County Plumbing Service
Leak Detection and Repair
Water travels. Where it appears is frequently not where it comes from, which is why the first job is locating the leak rather than opening the nearest wall and hoping. The repair is usually the shorter half of the visit.

Signs worth investigating
- A water bill that climbed without a change in how the household uses water
- Staining, bubbling paint or soft drywall, often at a distance from the source
- A musty smell in a cabinet, closet or along a wall
- The meter continuing to move with every fixture off
- Damp flooring, or a warm patch on a slab floor
- A drip you can hear but cannot find
How a leak is tracked down
- Step 1
Establish that there is a leak
Checking behaviour with fixtures isolated, so effort is not spent chasing something that turns out to be condensation or a one-off spill.
- Step 2
Narrow the area
Working from what is accessible outward — fixtures, connections, visible piping — before assuming the leak is concealed.
- Step 3
Confirm before opening
Nothing gets cut into on a guess. You are told what the evidence points to and how confident that is first.
- Step 4
Repair and verify
Making the repair, then confirming the symptom is actually gone rather than temporarily out of sight.
About certainty
Some leaks are found in ten minutes. Others take methodical elimination, and a few sit in places that cannot be inspected without opening something up.
When that point is reached, the honest thing is to say what is known, what is likely and what is still a guess — including when the next step means access work with no guarantee attached. That conversation happens before any cutting, not after.
Useful to have ready
- When you first noticed it, and whether it is getting worse
- Whether the water appears constantly or only during certain use
- Any recent work on the property, including landscaping and remodeling
- Where your main shutoff is, and whether you can reach it safely
Leak detection FAQ
Often the source can be narrowed down substantially before anything is opened. Whether it can be confirmed without access depends on where it sits, and you will be told which situation you are in before any work starts.
It can be, and it is worth checking. A running toilet, an irrigation fault and a concealed supply leak can all look identical on a bill, so the investigation starts by ruling out the easy explanations.
If water is actively appearing and you can reach the main shutoff safely, closing it limits the damage. Mention on the call whether you were able to.
Related services
Plumbing Repair and Troubleshooting
Tracking down the cause of leaks, slow drains, pressure problems and fixtures that will not behave.
Water Heater Repair and Installation
Evaluation, repair and replacement for tank water heaters, including the connections around them.
Tankless Water Heaters
Installation and service for on-demand water heating, including what a property needs to support it.