The correct way is to ground the dish and cable to your electric service grounding point.
The proper way to ground the system is to the service ground,which consist of an 8' groundrod bonded to the waterservice and the grounding bar in your panel.
Therefore, it seems, it is best to ground in a way that is acceptable to the local inspector.
As far as I know, it has been that way for some time. I wanted to run a separate ground rod for the satellite system, and found out that wouldn't be up to code. This makes it hard for me to properly ground my system, since the electric service is on the opposite corner of the house from my dish farm