Abstract: A bottled water pressurization system draws purified water from a five gallon bottle by means of an electric pump, forcing the purified water into a tank containing a certain quantity of pressurized air, maintaining a level of water in the tank sufficient to produce a pressure of approximately 25 to 50 pounds per square inch. An outlet of the tank delivers pressurized water to a faucet or spigot, coffee machine, an ice make, a refrigerator, a hot and/or cold drinking water delivery unit, or other such appliance. A flexible tube is connected to the pump inlet and draws water from the bottle through an upright tube and cover assembly inserted into and over the mouth of the bottle. The upright tube extends nearly to the bottom of the bottle. A one-way valve attached to the bottom of the upright tube prevents reverse flow spillage of residual water in the upright tube when it is removed from an empty bottle and installed in a full one.