Repairing Pinhole Leaks in Copper Pipes: Soldering Holes, Replacing Pipes, or Replumbing the Whole House Will Rid Copper Pipes or Leaks

Submitted By
Tom Kraeutler
Answers
1 expert, 0 community
Q:

I purchased my home in April 2006. I am experiencing a problem with the copper waterlines/pipes corroding from the inside out.  So far the corrosion appears to be limited to just the hot water lines, but I'm afraid to take a look inside the cold water lines.

What's happening is we keep getting pinhole leaks springing up throughout the hot water lines, and when I recently repaired two holes/leaks I looked at the inside of the lines and saw a lot of corrosion which I have never seen or experienced before. 

I had a home inspection completed by a professional before I bought and closed on the house, and the inspector identified a leak that the previous owner had to fix prior to the closing.  Is there anything else I can do other than replace the entire waterline system?  Also, is there anything I can do because I feel this was an existing problem that the previous owner knew about?