 While mass nouns do not admit the indefinite article, they admit a use of ‘some’ which acts like an indefinite article (Cartwright 1965). We can say, for example, “Adam drank some water which is worse than Onondaga Lake water,” or, “Heraclitus bathed in some water yesterday and bathed in it again today.” (Note the anaphoric use of ‘it’ in the last sentence, and how it does not necessarily imply its referent is a particular thing).