4-[(2-Chloro­ethyl)amino]quinolinium chloride monohydrate

In the title salt hydrate, C(11)H(12)ClN(2) (+)·Cl(−)·H(2)O, the quinolin­ium core is essentially planar (r.m.s. deviation = 0.027 Å) with the chloro­ethyl side chain being almost orthogonal to the core [C—N—C—C torsion angle = −80.0 (3)°]. In the crystal packing, the water mol­ecule bridges three species, forming donor inter­actions to two chloride anions and accepting a hydrogen bond from the quinolinium H atom. The chloride anion accepts a hydrogen bond from the amine N atom with the result that a two-dimensional supra­molecular array is formed in the ac plane. A C—H⋯Cl interaction also occurs.