shibby
New Member
Yep.
This is my first post. I am a homeowner and currently at a loss.
In the past 6 months, I have had 3 pinhole leaks in the same 20ft stretch of copper piping supplying my cold water. First occurred in April of this year, and 2nd in beginning of Dec, and the most recent, the 3rd, just yesterday.
They have all happened about 6 ft from each other and it's always a pinhole leak.
The first 2 were fixed by removing about a foot of old piping and coupling in a new one. The 3rd leak, about 3 ft of new piping was coupled in.
The plumbers tested my water pressure and determined the pressure to be normal. In addition, they mentioned that the copper piping is mid-grade piping. So pretty decent.
My place was built in 2004 so it's not too old piping.
No one knows why this is happening and I fear it will happen again.
One thing I do notice is sometimes, possibly when using water, I hear and knocking and bumping sound in the piping pretty much in the same 20ft stretch that the leaks have occurred. I'm not sure if this is something that may be causing the leaks, or if it's something else.
What are the chances that 3 pinhole leaks happen in a same stretch of copper piping within a span of 6 months in a 2004 built residence?
I am looking for a possible diagnosis and a fix to this problem. At this point I have no confidence that this is random, but something is causing it and it'll happen again.
Attached are some pics of the most recent leak and repair. The problem pipe running horizontal in each pic.
Thank you for you help, I really need some advice.

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This is my first post. I am a homeowner and currently at a loss.
In the past 6 months, I have had 3 pinhole leaks in the same 20ft stretch of copper piping supplying my cold water. First occurred in April of this year, and 2nd in beginning of Dec, and the most recent, the 3rd, just yesterday.
They have all happened about 6 ft from each other and it's always a pinhole leak.
The first 2 were fixed by removing about a foot of old piping and coupling in a new one. The 3rd leak, about 3 ft of new piping was coupled in.
The plumbers tested my water pressure and determined the pressure to be normal. In addition, they mentioned that the copper piping is mid-grade piping. So pretty decent.
My place was built in 2004 so it's not too old piping.
No one knows why this is happening and I fear it will happen again.
One thing I do notice is sometimes, possibly when using water, I hear and knocking and bumping sound in the piping pretty much in the same 20ft stretch that the leaks have occurred. I'm not sure if this is something that may be causing the leaks, or if it's something else.
What are the chances that 3 pinhole leaks happen in a same stretch of copper piping within a span of 6 months in a 2004 built residence?
I am looking for a possible diagnosis and a fix to this problem. At this point I have no confidence that this is random, but something is causing it and it'll happen again.
Attached are some pics of the most recent leak and repair. The problem pipe running horizontal in each pic.
Thank you for you help, I really need some advice.


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