Ok so purely by accident while working on a buddies residential panel I found an errant amperage on his water pipe ground. It is only on the street side of the water meter, zero amps on the house side of the water meter. The amperage seems to range from .2 amps to 3 amps or so. It seems to runs up or down with the imbalanced load on the Neutral. The closer to the household load being balanced, the lower the amperage goes. The electrical service is brand new, a month or so old from the weather head down. Upon finding the issue I re tightened all of the connections in the new panel figuring that could be the issue. Nope. Household wiring is probably 80 percent new. There is some old knob and tube and old romex that will be going away as he renovates and so my first thought was bad neutral somewhere in the house. Shutting off the old circuits OR any new circuits, does not clear the problem, it only increases or decreases the amperage depending on the imbalance in load. I next disconnected both the ground from the water pipe and the ground rod expecting to find a voltage between ground and water service. I found zero volts between water pipe and ground wire and zero volts between ground rod and ground wire. Next I checked for voltage between Neutral and both grounds. Again zero volts. I then checked the water pipe with my clamp meter and as to be expected, found zero amps. Upon hooking the grounds back up, it's back. I then began turning off breakers, that is when I noticed it changing. As the house moves further out of balance, the greater the amperage to ground. I had him give the local utility a call, they came out, pulled his meter, and apparently plugged in a socket tester and told him the line up to the transformer was good. I'm stumped. Any help or insight that anyone can offer will be greatly appreciated. Thanks in advance, Dave.