Hal wrote:

On Tue, 17 Feb 2004 09:23:21 -0500, "Sam Hopkins"
wrote:


My guess is there's something more sinister going on. Copper pipes have been
used a long long long time in homes with water that is above 7 PH and the
plumping in them still exists after 80 years.


There was a flap about copper pipes not standing up to water here and
someone blamed impurities in the copper. Sounds reasonable to me,

I've heard that electrical currents through the ground and using water
pipe for ground can also be a problem. I am not an electrician, so
anyone with a problem should ask an expert.