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The chemical characteristics and age dating of the thermal springwater developed recently in Chullabukdo were investigated. The temperature range of the thermal springwater was found 27∼29℃, indicating a low temperature thermal springwater. The concentration of F- ion in the springwater was found relatively high in the range of 2∼3 ppm, but NO3- ion was nearly not detected. The concentration range of SO42- ion was 0.02∼23 ppm, among which SO42- content of Y3 was found very high compared to that of other springwater, since this site is known as a sulfur spring. HCO3- ion content was found 2∼5 times higher than that of groundwater. Y1, Y3, Y5, Y2, Y4, and Y8, were classified as HCO3- type, Y6 as Cl- type, and Y7, as no domonant type by classification diagram for anion and cation facies. From the results of age dating on the basis of the mean tritium level of precipitation and thermal springs, Y1 was identified as the oldest thermal spring (-89 years) and Y7 was identified as -89 years and Y7 was -1 year using dispersive model. The results calculated by two models agreed well each other.
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