Shouldn't happen. The water pipes are often used as a ground, but since
they are grounded, you can't get a shock off them. But, maybe they aren't
grounded. Is there a jumper around your meter, or any plastic in the
system?

I suggest that you ascertain there is voltage between the water pipes and a
true ground. Assuming there is (if there isn't, then you are hallucinating)
then shut off all the breakers and see if there is voltage. Assuming there
isn't, turn them back on one at a time and see what circuit energizes them.

With that knowledge, you can probably fix it.