Crlnva,
Does VA adopt the NEC into law? If so, then you would still be required to drive a second ground rod if one will not provide the 25 ohms or less to ground as specified in section 250.56, regardless whether the waterpipe primary electrode is copper or not.
Because the average electrical contractor doesn't own the special testing equipment required to measure ground resistance, most electricians will just drive the second rod to satisfy the requirement. Matt
