earlydean, let's clarify your post.
250.52(A)(1) states that IF a metal water pipe IS to be used as a grounding electrode, it must be in contact with the earth for 10 feet or more.
250.52 doesn't state that a water pipe MUST be used as an grounding electrode.
EX. well water systems, plastic pipe incoming water.
However, if it is used as a grounding electrode and meets the earth contact requirement,it MUST be supplemented.
Does anyone else read it this way, or is it just me?