Hydrogeochemistry and geothermometry of thermal springs in the eastern Trans-Mexican Volcanic Belt

•Thermal springs from the eastern Trans-Mexican Volcanic Belt were studied•Three water types were identified: Na-Cl, Na-Ca-SO4-HCO3, and Na-HCO3.•High concentrations of B, Li, As, and F− were detected.•The presence of geothermal brine and rock-water processes control water chemistry•The geothermometry indicates reservoir temperatures between 90 and 190°C.