This study set up the estimates of leakage management efficiency evaluation and leakage management goal that
could be used in local water distribution networks efficiency business and modernization business. The data were
analyzed using data envelopment analysis and multiple regression analysis. To this end, with leakage management
input indices concerning leakage reduction activities (e.g., aged pipe replacement, water meter replacement, leakage
restoration, and leakage detection) and leakage management calculation indices (e.g., the increase of revenue water
ratio and the reduction of leakage ratio), the data on 22 K-water consignment local water supply systems were
analyzed for the years from 2004 through 2018. Using the results of efficiency analysis by data envelopment analysis,
the other DMUs (Decision Making Unit) benchmarked the DMU with the highest efficiency to maximize the leakage
management efficiency for all DMUs. Through this, leakage management goal estimates were drawn with the input
indices of four leakage reduction activities and calculation indices of the increase of revenue water ratio and the
reduction of leakage ratio by multiple regression analysis for each group based on the revenue water ratio and leakage
ratio. The correlation coefficients of the leakage management goal estimate for the criteria for the revenue water
ratio amounted to 0.553 and 0.771. The correlation coefficients of the leakage management goal estimate for the
criteria for leakage ratio were 0.397 and 0.865. Accordingly, we estimated the quantity and priority of four leakage
reduction activities for the target leakage ratio and revenue water ratio.