Abstract: A water tank system having a tank with an inner cavity adapted to hold water, with a filling aperture in a top surface of the tank and a spout is in a first side near a bottom surface, with an air pump external to the tank, an air stone in the inner cavity of the tank which is connected to the air pump via a tube, the air stone is adapted to gradually diffuse oxygen into the water in the tank, and an air water trap that is S-shaped and generally hollow and has an open first end and an open second end, the first end penetrates the top surface of the tank, the air water trap allows condensation to collect and air to be exhausted from the tank.