In the title Schiff base hydrate, C15H14BrNO3·H2O, the dihedral angle between the benzene rings is 0.9 (2)° and an intramolecular O—H...N hydrogen bond closes an S(6) ring. In the crystal, Ow—H...O (w = water) hydrogen bonds link the components into centrosymmetric tetramers (two Schiff bases and two water molecules). Weak C—H...Ow interactions consolidate the linking of the molecules within the tetramers. The O atom of the water molecule is disordered over two adjacent sites in a 0.73 (9):0.27 (9) ratio.