Pinhole leaks in copper pipes
Mar 4, 2016 1:00 AM - Q. I am a Realtor and have noticed a chronic plumbing problem in one of the subdivisions in my area. Many of the homes in the neighborhood have developed pinhole leaks in the copper water pipes under the slab floors. Obviously, this is very expensive to fix and can cause serious damage. What could be the cause of this problem: materials, workmanship or what?