Incidentally, by way of example, in the embodiment of FIGS. 2, 3 and 4A, and 4B, all the components, including the lines and valves, etc. should preferably be fabricated from chlorine resistant materials such as Kel-F plastic and/or metals like nickel. [0057]FIG. 4B illustrates a second preferred embodiment of the present invention as integrated in a household setting.