Crystal structure of 4-acetamido­benzoic acid monohydrate

In the title compound, C(9)H(9)NO(3)·H(2)O, the plane of the acetamide group is oriented at 20.52 (8)° with respect to the benzene ring, whereas the plane of the carb­oxy­lic acid group is essentially coplanar with the benzene ring [maximum deviation = 0.033 (1) Å]. In the crystal, classical O—H⋯O and N—H⋯O hydrogen bonds and weak C—H⋯O hydrogen bonds link the organic mol­ecules and water mol­ecules of crystallization into a three-dimensional supra­molecular architecture.