> Still aghast at the 338 daily gallons per four people stat, I looked up some more information on sewage production.

Maybe they just took the total water use and divided it by the total population and then divided again by four. In a sense, this gives you the per four-person-family use rate. But it is including industry, agriculture, fire fighting, leaky water mains, and absolutely everything else.

You can make statistics say anything you want them to say. Just ask any politician.
Howard