Evaluation of geogenic sources using major ions, potential harmful trace elements, and natural organic matter of various drinking water sources in South Korea

Kyung-Seok Ko1, Dong-Chan Koh2, Jong-Sik Ryu3, Young Hwa Oh2, Youn-Young Jung4, Jae-Min Lee2 and Ho Jeong Jo5, (1)Daejeon, South Korea, (2)Korea Institute of Geoscience and Mineral Resources, Daejeon, South Korea, (3)Pukyong National University, Department of Earth and Environmental Sciences, Busan, South Korea, (4)Korea Basic Science Institute, Cheongju, South Korea, (5)Yuseong, Daejeon, South Korea