People tend to get a bit hysterical when they read something and don't try to understand what they read!!
That leaves many of us convinced of hazards if we don't do some thought of our own. A place to look for more reliable advise might be needed? I use Prime as a water treatment and do trust most of their advise. They do tend to be experts?
So since I put Prime in my water and it is supposed to deal with heavy metals, I want to know what it does so I check their information. Seems a better way to get info than trusting scuttle butt info from the web.
In many areas, copper pipes are specified by building codes as they are the safest type. There are other areas where the water is different so you should check your water before deciding if your water is a serious problem.
Prime is designed to deal with copper in DOUBLE the amount allowed in water supplies so in many cases there is no problem but you should read though this discussion on the Prime site and make your own decision based on facts rather than what you read other places.
http://www.seachem.com/support/forums/archive/index.php/t-3484.html
What I read for my area tells me that if my water has double the allowed amount and my PH begins to approach battery acid, I have a problem. Until then I feel quite safe and ignore the hysterical!