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In (Bernhard et al. (JRC, 2020b), the average increase of water use efficiency in the industry sector between 2000 and 2015 is estimated at 2.2 % per year. This is roughly in agreement with Figure 4.16 (Dworak et al., 2007) provide an estimate of potential water savings in the industry between 15 and 90 %, with 43 % as central estimate.