I’ve searched and searched but can’t find the answer. I’m permanently set up on my land and the faucet head to my fresh water supply is rusted out and needs replacing. In the mean time I want to use my fresh water tank. I’ve filled the tank 1/3 of the way so I can flush it and when I turn on the pump I can hear it running but I don’t get any water from the faucets. Is there a valve or something I need to turn to switch from city supply to the fresh water tank? Thanks ahead of time.