In the title polymer, [Cd(C(8)H(10)O(4))(H(2)O)(2)](n), the Cd(II) cation is coordinated by five carboxyl-ate O atoms from three different cyclo-hexane-1,2-dicarboxyl-ate anions and two O atoms from two water mol-ecules, displaying a distorted CdO(7) pentagonal-bipyramidal geometry. Each anion acts as a μ(3)-bridge, linking symmetry-related Cd(II) ions into a layer parallel to (010). In the crystal, numerous O-H⋯O and C-H⋯O hydrogen bonds occur. The coordinated water mol-ecules and carboxyl-ate O atoms act as donors or acceptors in the formation of these hydrogen-bonding inter-actions.