In the title compound, [Zn(C(18)H(39)N(3)O(3))](NO(3))(2)·H(2)O, the coordination geometry around the central Zn(II) atom is distorted octa-hedral. The hydroxyl groups in the macrocyclic ligand and water mol-ecules are engaged in O-H⋯O hydrogen bonding, which forms two-dimensional corrugated sheets comprising 34-membered rings. Neighbouring sheets are connected by C-H⋯O inter-actions.