The title compound, C(13)H(9)Cl(2)NO(2)·H(2)O, represents a Schiff base which adopts the phenol-imine tautomeric form in the solid state. The mol-ecule is approximately planar (r.m.s. deviation 0.0818 Å), and the dihedral angle between the two aromatic rings is 7.46 (12)°. An O-H⋯N inter-action generates an S(6) ring. In the crystal, mol-ecules are linked by inter-molecular O-H⋯O hydrogen bonds involving the solvent water mol-ecule, forming chains.