Very recently, ICD has been identified to be an additional source of low energy electrons in water and water clusters. There, ICD is faster than the competing proton transfer that is usually the prominent pathway in the case of electronic excitation of water clusters. The response of condensed water to electronic excitations is of utmost importance for biological systems. For instance, it was shown in experiments that low energy electrons do affect constituents of DNA effectively. Furthermore, ICD was reported after core-electron excitations of hydroxide in dissolved water.