Abstract: A water soluble metalworking fluid is the subject of this invention. The fluid is utilized at a concentration of about 3 weight percent in aqueous solution. The active ingredients are comprised of disodium phosphate heptahydrate, sodium molybdate, sodium vanadate, 1,2,3-benzotriazole, a fluorinated hydrocarbon surfactant, a biocide, and a foam suppressant, all in aqueous solution. The resulting fluid is water soluble, transparent, film free, non-putrefying, non-toxic, a non-irritant, non-corrosive, non-polluting, and has very low BOD and COD values.