but feasibility is often limited due to considerations of political financial and capacity and this complicates the implementation of central government decisions at the subnational level in greece israel and italy the absence of monitoring and evaluation of water policy outcomes were considered important obstacles to water policy implementation at the territorial level in israel the outcome of national water policies is not always quantified in a timely manner due to difficulties in obtaining the relevant data from the iwa database a complete reorganisation of the database is needed to provide clear results from policy changes