Sentence:  Frontage on a body of clear , clean <WSD>water</WSD> will be vastly different from the same amount of frontage on polluted water . 
Meaning of the word marked with <WSD> tags:  binary compound that occurs at room temperature as a clear colorless odorless tasteless liquid; freezes into ice below 0 degrees centigrade and boils above 100 degrees centigrade; widely used as a solvent