This paper reports on the measured water uptake and water transport properties through an anion-exchange membrane, including the water diffusivity, the electro-osmotic drag (EOD) coefficient, and the mass-transfer coefficient of water at the cathode catalyst layer/membrane interface. The water uptake of the membrane in equilibrium with liquid water and water vapor at different values of relative humidity is measured at 30,40 and 60 degrees C. The measured water uptake at each measured temperature is correlated in terms of the relative humidity. Like in Nafion (R) membranes, the Schroeder's paradox phenomenon is also found to exist in the anion-exchange membrane. The water diffusivity of the anion-exchange membrane shows the same order of 10(-10) m(2) s(-1) as that of the Nafion (R) membrane. The measured mass-transfer coefficient of water at the cathode catalyst layer/membrane interface falls in the range of 1.0 x 10(-6) to 1.0 x 10(-5) m s(-1). The EOD coefficients measured at 30 degrees C and 40 degrees C are, respectively, 2.3 and 3.6. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.