4-Acetamido­anilinium nitrate monohydrate

In the title hydrated salt, C₈H₁₁N₂O⁺·NO₃⁻·H₂O, the N—C bond distances [1.349 (2) and 1.413 (2) Å] along with the sum of the angles (359.88°) around the acetamide N atom clearly indicate that the heteroatom has an sp² character. The ammonium group is involved in a total of three N—H...O hydrogen bonds, two of these are with a water mol­ecule, which forms two O—H...O hydrogen bonds. All these hydrogen bonds link the ionic units and the water mol­ecule into infinite planar layers parallel to (100). The remaining two N—H...O inter­actions in which the ammoniun group is involved link these layers into an infinite three-dimensional network.