3,5-Bis(4-methoxy-phen-yl)-1H-1,2,4-triazole monohydrate.

In the title compound, C(16)H(15)N(3)O(2)·H(2)O, the two benzene rings and the triazole ring lie almost in the same plane, the triazole ring forming dihedral angles of 5.07 (9) and 5.80 (8)° with the benzene rings. In the crystal, there are three relatively strong inter-molecular O-H⋯N and N-H⋯O hydrogen bonds, which lead to the formation of a one-dimensional double chain running parallel to the a axis. Weak π-π inter-actions between the benzene rings of neighboring chains with a centroid-centroid distance of 3.893 (4) Å result in the formation of layers parallel to the ac plane.