The Society of Convergence Knowledge Transactions ISSN:2287-8920(Print) 융복합지식학회논문지

In order to effectively control the leakage occurring in the water supply pipeline, it is necessary to accurately grasp the pipeline performance and set a management goal appropriate to the situation. In this study, the types of pipelines were classified in consideration of local government financial status, and the pipeline performance of each type were evaluated using domestic and overseas performance indicators. As an indicator for classifying pipeline types, billed metered consumption that was most correlated with the population density (water population per length of distribution and service pip) was selected as the types of pipeline classification criterion. The billed metered consumption standards for dividing pipelines into three phases were set at 10 ML/km/year and 30 ML/km/year. The 161 local governments in Korea were classified as Type-I (33 local governments), Type-II (54 local governments), and Type-III (74 local governments). The water pipelines in the surveyed area (161 local governments) were divided by type and evaluated by ILI and revenue water rate indicators. The average ILI and revenue water rate of Type-I, which represent large cities and planned cities, are 4.0% and 88.9%, respectively, which shows that the pipline performance of Type-I is better than Type-II and III. The ILI value of Type-II is the highest (10.4), and it is urgent to prepare countermeasures by supporting pipeline improvement projects that are the same as Type-III.