4-Amino­pyridinium 2-chloro-4-nitro­benzoate monohydrate

In the title hydrated mol­ecular salt, C₅H₇N₂⁺·C₇H₃ClNO₄⁻·H₂O, the ions and water mol­ecules assemble into ribbons of R₆⁵(22) rings along the c axis via O(water)—H...O⁻, N⁺—H...O(water) and N—H...O⁻ hydrogen bonds. N—H...O⁻ hydrogen bonds connect adjacent ribbons along the c-axis direction via R₄⁴(12) rings, forming hydrogen-bonded layers. The CO₂ and NO₂ groups make dihedral angles of 81.8 (2) and 1.4 (2)°, respectively, with the ring in the anion.