The bottle filling system incorporates a bottle, a fill base structure, and a control structure. The bottle, the fill base structure, and the control structure are fluidically interconnected. The fill base structure and the control structure are electrically interconnected. The control structure controls the flow of a fluid from a pressurized fluid source into the fill base structure. The fill base structure transports the fluid received from the control structure to the bottle. The control structure detects the presence of the bottle relative to the fill base structure. The control structure measures the amount of fluid in the bottle. The control structure automatically replenishes the amount of fluid contained in the bottle.