I agree with Gunni. Why put a pressurized water source that probably operates at a much higer pressure than your normal system pressure on a boat that can be filled with that water?
On the other hand, there are ways to regulate the pressure down (one problem solved) and there are some new water sensor controls that turn off the water supply after a certain number of gallons (to protect homes from water line breaks) (second problem mitigated) This of course depends on your confidence in the gizmo's to work 100% of the time. My insurance company offered one to me (at a $$ of course) after I flooded my walnut floors overflowing the kitchen sink!
If I were to hook up a shore side source of water (which I wouldn't do) I would sure want some protection like the regulator and shut off controller. You can probably call your house insurance carrier and they might have info on it. Your boat, your choice.
