| Title |
A Study on the Calculation of Stormwater Utility Fee Using GIS based Impervious Surface Ratio Estimation Methodology |
| Authors |
유재현 ( Jae Hyun Yoo ) ; 김계현 ( Kye Hyun Kim ) ; 최지용 ( Ji Yong Choi ) ; 이철용 ( Chol Young Lee ) |
| DOI |
https://doi.org/10.15681/KSWE.2021.37.3.157 |
| Keywords |
Impervious Surface Map; Impervious Surface Ratio; Nonpoint pollution; Stormwater Utility Fee |
| Abstract |
Korea needs to develop a rational system to separate stormwater utility fee from current sewerage fee. In this study, the scenario for calculating stormwater utility fee of Bupyeong-gu was suggested and the results were considered. For this purpose, the application of stormwater utility fee overseas and current domestic system were analyzed. A three step calculating scenario considering suitable domestic situation and impervious surface area was suggested. Water, sewerage usage, and hydrant data were collected. The total amount of water and sewerage fees for land use were calculated. The sewerage fee of Bupyeong-gu for the year 2014 was 21,685,446,578 won. Assuming that 40% of this amount was the cost associated to stormwater, the result showed that the fees for residential area in third step decreased by 0.77% compared to that of the first step. For commercial area, the stormwater utility fee decreased by 36.87%. For industrial area, although the consumption of water was similar to that of commercial area, the stormwater utility fee increased by 8.35%. For green area, the fee increased by 37.46%. This study demonstrated that the calculation of actual stormwater utility fee using impervious surface map and impervious Surface Ratio Estimation Methodology developed in previous studies is feasible. |