In a H2O pipe it could be about any pressure but generally in the 40-60 lb's/in at the meter in front of the structure it services. House drawn well's generally can run the same per the PSI required.
A H2O pipe is not just "picked up" cause it near any other panel.
Grounding or Bonding to the H2O pipe is usually done from the Service Point of distrubition of the "Main" Service.
The H2O Pipe has to be 10 foot and in ground as it enters the building to qualify for bonding at the service point.
In bound pottable water is considered pressurized, Drain or waste is not considered pressurizied.