The present article describes the possibilities for direct photometric determination of Fe(II) quantity in the form of sulfosalicylic complex without its transition to the compound Fe(III). During the research, the influence of chloride- and sulfate ions being present in drinking and mineral water in reasonable quantity, on the determination of Fe(II) with the help of sulfosalicylic method has been investigated. To determine the impediment of copper to the determination of Fe(II) with sulfosalicylic acid the conditions under which the complex formation of copper(II) with sulfosalicylic acid have been studied.