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In the crystal of the title hydrated mol­ecular salt, C8H12NO+·Cl·H2O, the water mol­ecule makes two O—H...Cl hydrogen bonds, generating [010] zigzag chains of alternating water mol­ecules and chloride ions. The cation is bonded to the chain by an O—H...O hydrogen bond and two weak C—H...Cl inter­actions. Weak aromatic π–π stacking [centroid–centroid separation = 3.5175 (15) Å] occurs between the chains.

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The title salt, C8H12NO+·Br·H2O, is isomorphous with the chloride analogue [Seethalakshmi et al. (2013). Acta Cryst. E69, o835–o836]. In the solid state, the cations, anions and water mol­ecules are inter­linked by a network of O—H...O, O—H...Br and C—H...Br inter­actions. The water mol­ecule makes two O—H...Br hydrogen bonds, generating [010] zigzag chains of alternating water mol­ecules and bromide anions. The cation is involved in two inter­molecular C—H...Cl inter­actions in the chloride salt, whereas three inter­molecular C—H...Br inter­actions are observed in the title bromide salt. This additional inter­molecular C—H...Br inter­action links the adjacent water and bromide zigzag chains via cationic mol­ecules. In addition, weak π–π stacking inter­actions are observed between pyridinium rings [centroid–centroid distance = 3.5664 (13) Å].
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