The asymmetric unit of the title compound, [Cd(C7H4NO3S)(2)- (C8H22N4)]center dot 0.25H(2)O, consists of two [Cd(sac)(2)(paen)] molecules [sac is saccharinate (C7H4NO3S) and paen is N,N'-bis(3-propylamine) ethylenediamine (C8H22N4)], and a partial-occupancy water molecule. Each Cd II ion is octahedrally coordinated. The equatorial plane of the octahedron is formed by N atoms of the paen ligands, and the axial positions are occupied by the N atoms of the sac ligands. In one of the molecules, the sulfonyl group of a sac ligand is disordered over two different orientations, with site-occupancy factors of 0.83 and 0.17. N-H center dot center dot center dot O hydrogen bonding is observed between the independent molecules. Neighbouring [Cd(sac)(2)(paen)] units are linked by N-H center dot center dot center dot O hydrogen bonds into chains running parallel to the a axis.