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There is a significant water saving potential across all economic sectors, but large investments are needed to unlock it. Monitoring, metering and authorisation of water abstractions and understanding of environmental interactions in river basins has progressed overall. Environmental flow requirements (e-flows) are better defined than they were, even though still not to a satisfactory level. Enforcement has improved; yet, there is a long distance to cover until full implementation of WFD requirements regarding e-flows across all EU water bodies. Leakages in the conveyance systems are still higher than 25% of total water supply in many eastern and southern European countries(EC, 2013b). Furthermore, attention is needed to avoid rebound effects.