Our Surveyor trailer came with a built in water filter. Very difficult to get to when winterizing ,almost impossible. Discussed problem with the dealer. He asked if we have a filter at our home. Answe...
It takes a three stage filter system to guarantee good water... have never seen one installed in a RV. I run water before hooking up and put some in my hand for a taste test. In ten years I've used my inline system maybe three times and we do not buy bottled water.