In Matsuzaki, Togo and Asozu Hot Springs which issue around the Pond Togo, the chloride and sulfate content and water temperatures of well waters and the amount of chloride and sufate fixed to the soil were determined with samples collected from various parts of the thermal spring districts and its neighborhood. The chloride and sulfate content and water temperatures of the well water samples collected from the thermal spring districts were higher than those from its neighbourhood, but for the amounts of chloride and sulfate fixed to the soil, no difference was detected. As the existence of other sources which would supply the chloride, sulfate and heat to the water is not expected, the difference in the chloride and sulfate content and water temperatures of well waters, between the samples collected from the thermal spring districts and its neighbourhood, seems to be due to the effects of thermal springs.