And having thoughtlessly polluted our streams and rivers, we have seen in recent years a rapidly growing market for bottled drinking water. I am sure that some will say that a rapidly growing market for water is "good for the economy," and most of us are still affluent enough to pay the cost. Nevertheless, it is a considerable cost that we are now paying for drinkable water, which we once had in plentiful supply at little cost or none at all. And the increasing of the cost suggests that the time may come when the cost will be unaffordable.