Rizer 250 is tough no doubt about it.
The quick answer is right now grounding and bonding are two separate items that are both addressed in article 250.
Grounding electric systems to metal water pipes must be most times within 5' of the point of entrance.
Bonding metal water pipes to a electric system can be done anywhere.
The first code reference I posted 250.30(A)(4)has only to do with Grounding the SDS.
The second code reference I posted 250.104(A)(4)has only to do with Bonding metal water piping in the area served to this SDS.
These rules mirror the rules for a typical house service.
The service must be grounded to the metal water pipe (if there is one) within 5' of the entrance, if this is done the interior water piping is now also bonded.
But what if this house has a plastic water main and metal interior piping.
In that case no service ground will be needed but bonding is still required, the bonding can be done anywhere on the piping system.
