一些像日本、美國的國家有幸提供人民完善的供水系統不需煮沸即可飲用的自來生水。
there are some
lucky countries such as Japanese and American, having their bona fide water
supply system which can have their people to drink tap water without boiling.
不過凡事總有萬一，美國一州西維基尼亞就是一個不幸的例子。
but anything always
would have an accident into itself like one state of the U.S., west Virginia
which is a unfortunate example.
縱然他們的政府不斷的保證他們的水可以安心飲用，實際真相為何卻無人能知。
though their government
constantly promised their water is safe to drink, the real fact of this event
is not known for anyone.
看來世上最純淨的飲水只能到古早時候才能找到。