Due to LOS issues it would be much easier if I can ground the coax/mast grounding block to a well-supplied water pipe just after it comes through the foundation in the basement. Is this something that can be done and what requirements should I look for. I am trying to avoid having to connect a new ground rod near the entry point with the panel ground rod which is about 100 feet away. Also, is one alternative to somehow gain access to the incoming water pipe just before it enters the foundation by digging up the dirt and attaching something at that point? As always, thank you.