In this study, a survey of the number of excess water quality standards, an average concentration analysis, and a trend analysis to calculate the grade of groundwater contamination using data from the groundwater quality monitoring network (GQMN) in Gyeonggi-do were conducted. A water pollution map of underground water was provided, and the water quality characteristics between analysis items and influencing factors were identified by statistical analysis. The indication contamination rate-the ratio of three determined contamination indicators-from high to low was Cl- (31.2%) > NO3--N (27.9%) > pH (20.8%) > Trichloroethylene (8.9%) > Arsenic (6.3%) > Tetrachloroethylene (1.5%). According to the contamination grade analysis, the ‘clean grade (0)’ was classified as less than 68.8% (Cl-), the ‘possibly contaminated grade (1)’ was less than 30.1% (Cl-), the ‘contaminated grade (2)’ was less than 7.1% (NO3--N), and the ‘seriously contaminated grade (3)’ was classified as less than 1.9% (NO3--N). A mean contamination index rank difference test was conducted for each influencing factor in highly contaminated areas, non-drinking facilities, unopened facilities, private facilities, industrial waters, and industrial areas that showed statistically significant differences.
: 공학분야 > 환경공학
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