2-(Furan-2-yl)-1,3-bis(furan-2-ylmeth-yl)-1H-benzimidazol-3-ium chloride monohydrate.

The title hydrated salt, C(21)H(17)N(2)O(3) (+)·Cl(-)·H(2)O, exhibits disorder in one of the furan rings. The major and minor components have a refined occupancy ratio of 0.844 (19):0.156 (19). The structure displays intermolecular hydrogen bonding involving the water molecule and the chloride anion. Close intermolecular C-H⋯Cl and C-H⋯(furan ring) inter-actions complete the hydrogen bonding.