M. Reimanis, J.Ozolins, N.Caplinska-Jarocka. Electrolytic process for water treatment. In this research paper influence of voltage power on decomposition of organic matter in water electrolysis process has been studded. Specially synthesized TinO2n-1 containing ceramic electrode was used as an anode. The quantity of organic matter in the water was given as chemical oxygen consumption (ĶSP), mg O2/L. In this study it was found that in electrolysis process increasing the voltage power changes of water ĶSP is derisory.