nanci,
the problem needs to be isolated. a reading must be maintained if possible, and various breakers worked one at a time until it 0's out.
Then said circuit must be traced, and possibly taken apart to find what is energizing the water pipes.
the 'bonding' and 'grounding' should have been done originally in your home , unless you are now adding copper water lines where there were none.
as alluded to, it is a bandaid....
