
Where Pipe Leaks Happen in a Home
This page covers leaks in the water lines inside your house: under sinks, behind toilets, inside walls and ceilings, at the water heater, and along exposed runs in the garage or crawl space. Leaks under the foundation are a different job, covered on our slab leak detection page. Breaks between the meter and the house fall under water line repair.
The failure points we repair most often:
- Pinhole leaks in older copper, often on hot water lines
- Corroded galvanized joints that weep at the threads
- Braided supply lines and shutoff valves under sinks and toilets
- Fittings at the water heater
- Pipe damaged by remodeling, a nail through the wall, or shifting framing
How We Repair a Leaking Pipe
Stop the damage first, then fix the pipe so it stays fixed.
Stop the water
Find the exact failure
Repair the section
Test and close up

One Leak or the First of Many?
A single leak from a nail, a worn supply line, or a bad fitting is a repair. We fix it and you move on.
Pinhole leaks are different. When copper starts failing from the inside, the next pinhole is usually not far away, often on the same run. If we see that pattern, we tell you, and we show you what a whole-home repipe would cost next to another round of patches. The choice stays yours.
Why 5-Star
Why Homeowners Call 5-Star Plumbing
In-House Licensed Technicians
Upfront Flat-Rate Pricing
We Open Only What We Must
1-Year Labor Warranty
Pipe Leak Questions, Answered
- Should I shut off the main water if a pipe is leaking?
Yes, you should, if the leak is active and you cannot stop it at a fixture valve. The main shutoff is usually where the water line enters the house or in a box near the street. Shutting it off early limits the damage while help is on the way.
- Can you fix a pinhole leak without replacing the whole pipe?
Yes, usually we can. We replace the damaged section and test it. If the pipe around it shows the same wear, we point that out before you decide.
- Will you need to open my wall or ceiling?
Sometimes we do. Leaks inside walls and ceilings need an access opening to repair. We find the exact spot first, so the opening stays as small as the repair allows.
- Do you repair leaks in PEX and CPVC pipe?
Yes, we do. We repair copper, PEX, CPVC, and galvanized supply lines, and we join different materials with transition fittings approved for the purpose.
- Is a dripping supply line under the sink worth fixing right away?
Yes, it is. A small drip from a braided supply line or a valve can turn into a failed connection without warning. Replacing the line and the shutoff valve is a short job that removes that risk.





