Sentence:  conduct , encourage , and promote fundamental scientific research and basic studies to develop the best and most economical processes and methods for converting saline water into <WSD>water</WSD> suitable for beneficial consumptive purposes ; 
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