B-complex vitamins and vitamin C are water-soluble vitamins that are not stored in the body and must be replaced each day. Knowledge of recommended daily allowances, food sources ...
http://www.ext.colostate.edu/pubs/foodnut/09312.html

A highly water-soluble 2+1 b-cyclodextrin?fullerene conjugate". Chem. Commun. 2002: 1508 - 1509. doi: 10.1039/b202410a.   ^ E.M.Gutman, "Mechanochemistry of Solid Surfaces", World ...
http://en.wikipedia.org/wiki/Water-soluble

wa·ter-sol·u·ble (wô t r-s l y-b l, w t r-) adj. Soluble in water. Thesaurus Legend: Synonyms Related Words Antonyms. Adj. 1. water-soluble - soluble in water
http://www.thefreedictionary.com/water-soluble

UCON Base Stocks are the base of a formulation and are available in water soluble or water insoluble formulations.
http://www.dow.com/ucon/base/soluble.htm

What are water soluble oils like to use? Find out with these first-hand accounts from artists using water soluble oils.
http://painting.about.com/cs/oils/a/oilswatersol.htm