M. Reimanis, J.Ozolins, J. Malers, L. Berzina-Cimdina. Influence of electrolysis process on propagation of microorganisms in water. In this research paper influence of electrolysis process on microorganism propagation in water has been studded. The quantity of microorganisms and organic matter in the water and its changes under electrolysis were evaluated with help of permanganate index IMn, mg O2/L. Specially synthesized TiOx containing ceramic electrode was used as an anode. In these studies it was found that if the current density is increased until 8,3mA/cm2 and the process time is increased up to 2 hours, the IMn of the treated water decreased by 10%. If chloride ions are present during the electrolysis the decreasing of IMn was more rapid and using current density 8,3mA/cm2, IMn decreased by 78% during 1 hour. Use of the TiOx electrode promotes the destruction of organic matter as indicated by changes in IMn. Using the TOx electrode in the electrolysis process with the presence of chloride ions can create a lasting disinfectant effect that becomes apparent as decrease in the intensity of microorganisms reproduction.