filling fresh water with city water hook up

TakingThe5th wrote:
Your modifications could be augmented to facilitate the winterizing process as well. Put a tee valve on the suction side of the pump and add a hose to the tee valve and you are ready to suck antifreeze out of a jug. The valve will control the source of liquid for the pump; fresh water tank or jug. Cap off that new hose when not in use for extra safety.

Mine came from the factory with exactly this.

I added a mod where I added a "T" after the pump and a spigot in the bay on my passenger side that is just below the Fresh Water Fill Gravity port (also on my passenger side), I keep a short hose on it with a sprayer kinda like having a outside shower on my passenger side, although only cold water. Now I can fill the gravity feed with this hose that is there all the time (I like the OP's idea a lot too and may go that route also, but read for the next trick).

The above hose (in the quoted section) that was originally designed to help with winterizing, can be used to fill the Gravity Fresh Water Fill also. Now I use the winterizing hose dropped into my portable water container with the valve set to winterizing, turn on the RV water pump and let it suck the water up out of the portable container and I then use my new spigot and hose to dispense it into the gravity hole. Now I don't have to lift a large water container or carry an extra 12v pump when boon docking and wanting to fill the tank from portable containers.