The leak history (invented)
- Several years ago
- A pinhole in the kitchen cold line under the slab is spot repaired.
- Two years later
- A hot line leak near the hall bathroom is found and spot repaired.
- This year
- The meter moves again, and closing the water heater inlet stops it. A warm area appears near the laundry.
Why this time feels different
The first leak looked like bad luck. The second, on a different line, raised questions. With a third, the owner asks the plumber directly whether the pipe under the slab is reaching the end of its life. The pipe removed during the second repair showed pitting on the inside wall, which the owner photographed at the time.
The house is a 1960s Fullerton slab home with original copper, and the water is hard. Those facts do not prove more leaks are coming, but together with the history they change the conversation.
The three proposals the owner compares
| Option | What it addresses | What it leaves |
|---|---|---|
| Spot repair at the laundry | Today's leak | All remaining under-slab copper |
| Reroute the hot side overhead | Every hot line, which has leaked twice | Cold lines under the slab |
| Whole-house repipe | All supply lines | Nothing under the slab for supply |
How the owner reasons it through
- IfOnly the hot side kept leakingA hot side reroute targets the pattern without the full scope of a repipe.
- IfThe cold side has leaked tooA full repipe starts to look more sensible.
- IfThe owner plans to stay long termFewer future leaks matter more than the smallest job now.
The invented outcome
Because one of the three leaks was on the cold side, and the owner plans to stay, they get written proposals from two licensed plumbers for a full repipe and a hot-side reroute. After comparing scope, patching, permits and pipe material, they choose a full repipe through the attic. The old under-slab lines are capped and abandoned in place.
The owner keeps all three leak records in one folder, which helps when talking to their insurer and will help when they eventually sell.
Takeaways
- Track every leak with dates, locations and photos of removed pipe.
- Ask what the removed pipe shows about the rest of the system.
- Price at least two approaches when leaks repeat.
- Confirm permits and patching are included in each proposal.
Common questions
Is this a real case?
No. It is an invented example for illustration.
How many leaks justify a repipe?
There is no fixed number. Leak history, pipe condition and your plans for the house all matter.
What happens to the old pipe under the slab?
In a reroute or repipe it is usually disconnected and capped, then left in place.
General information for Fullerton, not a quote or professional advice. In an emergency, call 911.