We consider only the four intrinsic electrically active defects with the highest mobility: the positive and negative ions (OH₃+ and OH^-) and the valence or Bjerrum defects (vacant or doubly occupied hydrogen bonds). Assuming chemical equilibrium of the system, the entropy production is calculated in the linear approximation, especially the part of it resulting from changes of the proton configuration. The investigation of the electrical properties yields a Debye mechanism for the conductivity, and physical interpretations are found for the occurring phenomenological parameters. The anisotropy of the static dielectric constant is shown to be due to the anisotropy of the dynamical defect charges. Two characteristic times are found for the field relaxation, which are different of the Debye relaxation time. The electrostatic interaction between the defects is calculated for arbitrary concentrations. The electrochemical, mechanoelectrical and thermoelectrical effects are investigated, together with the inverse effects.