Lots of information here but I do have a few things to add.
Pinhole leaks often occur copper plumbing within the walls as well as within concrete. The exact cause of the leaks is suspected but unknown. Since the leaks are common regardless of the location of the copper pipes many believe that the leaks are caused by excessive treatment of water at the water treatment facilities. The thought is that it is actually the water drawing minerals (or other impurities) out of the copper which result in the leaks.
That said, pinhole leaks in copper pipes are not exclusive to our area. It is well known that copper plumbing is susceptible to having pinhole leaks in many parts of the US and also worldwide.
Yes, "re-plumbed" does refer to having the copper plumbing that was leaking replaced. Some of the "re-plumb" jobs are complete and some are part. As you can imagine, there are some pipes that are easier to get to than others. Typically, when a property is re-plumbed CPVC pipe is used. It is commonly referred to as PVC pipe. This is a flexible "plastic" type pipe material that can be installed with minimal holes being cut.
There are also companies that offer a service to "coat" the inside of copper plumbing with a liquid material that seals the current holes and keeps the water from interacting with the interior surface of the copper plumbing.
Probably more information here than you need but I hope this helps!
BRIAN A. MCGREEVY
Broker/Owner, REALTOR, MBA, GRI, ABR, SRES, RRS, AHWD
2007, 2008, 2009, 2010 & 2011 Five Star Award Winner- Best in Client Satisfaction
Sarasota Home Realty
2100 Constitution Boulevard
Sarasota, FL 34231
Phone: (941) 544-6763 FAX: (941) 866-7588