Used water removal system for a portable, hand-wash sink station

A portable, stand-alone, hand-wash sink station comprising:

• a vertically elongated used water storage tank having an upper end, a lower end and an open interior section;
• a fresh water tank disposed within the open interior section of the used water storage tank;
• a wash basin with a fresh water supply faucet arranged above the upper end of the used water storage tank and with the faucet connected to the fresh water tank for providing fresh water when desired;
• a wash basin drain connection between the used water storage tank and the wash basin for draining used water from the wash basin into the used water storage tank;
• an inverted, vertically elongated tube arranged within the sink station alongside the used water tank, the tube having one open end opening into a lower end of the used water tank to form an inlet and a second open end forming an outlet, opening outside of the sink station for draining water therethrough;
• whereby used water may be siphoned from the lower end of the housing formed storage tank upwardly, and then downwardly, through the tube to the outlet of the tube when a vacuum is applied to the tube outlet.

A portable stand-alone, hand-wash sink station comprising:

• a vertically elongated used water storage tank having an upper end portion, a lower end portion and an open interior section;
• a normally closed drain outlet at said lower end portion for draining used water from the used water storage tank when the drain outlet is opened;
• a fresh water tank arranged within the open interior section of the used water storage tank, said fresh water tank having a normally closed fresh water inlet provided at the upper end of the fresh water tank, and a normally closed fresh water drain outlet provided at the lower end of the fresh water tank for respectively filling and emptying the fresh water tank when desired;
• a wash basin above which a fresh water supply faucet is arranged, located upon an upper column disposed above the upper end portion of the used water storage tank, and with the faucet connected to the fresh water tank for providing fresh water when desired;
• a drain connection between the wash basin and the used water storage tank for draining used water from the wash basin into the used water storage tank;
• and
• an inverted, vertically elongated tube bent in a U-shape to provide a pair of parallel tube legs, arranged within the hand-wash sink station alongside the used water storage tank, with one leg of the tube having an open end which opens into the lower end of the used water tank, and the opposite leg having an open end which opens to the outside of the sink station;
• whereby a vacuum may be temporarily applied to said open end for siphoning used water from the lower end of the used water storage tank upwardly and then downwardly through the tube to the outlet for draining the used water from the sink station.