You were all so helpfull on my last problem I thought I would run another one by you. I worked at a customers house last week who had a couple pinholes in his copper in the basement. I replaced a section about 6 feet long that had two holes in it. After I turned the water back on I found another had started up about 6" away from one of my couplings and so i cut alittle further and fixed that one too. When I cleaned the copper I noticed that it almost looked like brass. The collor of the copper had changed over the years. It was very dark just like brass. I guess my question is...I have heard about pinhole developing from grounding problems and was wondering if any of you had any insight into this. Or have any of you noticed this color change in copper. As I told the customer, I would hate to be comming back all the time to replace a small section of pipe, However I guess it is job security....... Any thoughts? Thanks, Mark
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pinholes in copper water lines