No water flow when dry camping

A partially blocked aerator or other blocking sources in the lines AFTER the pump would cause the pump to cycle on and off as the preasure reached maximum and then fell below minimum as water is drawn. If the flow is unusually slow AND with little preasure and constantly running pump, then my vote would be a partial blockage BEFORE the pump's preasure head. Sediment or some other foreign matter is impeading a full water flow to the pump. Some units have a screen at the discharge point inside the water tank that with age gets plugged. Hard to believe that a 2010 model would already need maintenance, but it's possible. A white film (scum) does build up in a water tank even with regular disinfecting. That film can work it's way to the discharge point and cause the symtom you describe. The scum floats and or clings to the side of the tank. When you draw down the water in the tank to empty it or to use it all up for use, the scum collects and is drawn to the screen by the pumps action. The screen is part of the fitting that is the same diameter as the hole that penetrates the tank and is easily removed for cleaning and or inspection. The other possibilty with the same sympton would be a partially blocked filter on the water pump, if there is one. Then as others have suggested, foreign matter inside the pump, but that for me is the least llikely culprit given the symtom you describe.