Crap grounds...

[blitz <blitz () macronet net>]

Yes, seen that and worse..

How about the di-electric fittings on either a water heater, or a water meter?

Of course, "no one" would use a HOT water line as a ground, but it does 
happen, and
I believe the NEC requires both be bypassed now with a conductor the same 
size as power neutral.

I routinely jump unbridged meters and water heaters (cold pipe to hot) with 
a #6 when in doubt.
Just to be sure.
I've got lots of #6 in the scrap box, and plenty clamps...

Cheap insurance..