The radioactivity levels (Rn-222 and Ra-226) and physico-chemical properties of geothermal waters from two spas of BayA +/- ndA +/- r are investigated. Radon and radium measurements were made with collector chamber method. The radon concentrations range from 3.0 to 13.3 Bq/l, whereas the radium varies from 0.35 to 1.71 Bq/l. It has been observed that radon levels increase in winter and decrease in summer. The Rn-222/Ra-226 ratio was found to range from 4.91 to 30.53. Physico-chemical properties of water samples were also analysed. Water samples have considerably stable total dissolved solids values, slight acidity, low electrical conductivity, and temperature (42-48 A degrees C).