1 Very An odor that would not be detected ordinarily by
faint. the average consumer, but that could be detected
in the laboratory by an experienced observer.
2 Faint. An odor that the consumer might detect if his
attention were called to it, but that would not
attract attention otherwise.
3 Distinct. An odor that would be detected readily and that
might cause the water to be regarded with
disfavor.
4 Decided. An odor that would force itself upon the attention
and that might make the water unpalatable.
5 Very An odor of such intensity that the water would be
strong. absolutely unfit to drink. (A term to be used
only in extreme cases.)