In the presented research work model water solutions saturated with Benzene, Toluene, Xylene and their mixtures have been applied. They have been subdued to an ozonization process in, static and dynamic conditions. Non-equilibrium plasma has been obtained in a tubular ozonizer made of stainless steel equipped with a glass dielectric. Discharges have been generated by sinusoid current of 5.9 kV voltage (at carrier gas flow rate of 50 L/h). The compound content in the solutions has been subdued to extraction in methylene dichloride prior to the plasma application and after the process completion. Quality and quantity analyses have been performed by means of gas chromatography with the application of flame-ionization detec-tion. In static conditions a decomposition rate reaching 97% has been obtained for Benzene and Toluene. The biggest drop in the hydrocarbon content has been observed in the case of Xylene and the smallest one- in the case of Benzene.