The deterioration of water quality in water supply sources is an urgent problem both in Russia and around the world, which is why it is so important to develop new methods of water purification and filtration, which justifies the goal and emphasizes the relevance and practical significance of the research described in this article. As part of this work, pilot tests were conducted to determine ozone doses and evaluate the effectiveness of the ozonation method at a number of water supply stations. Taking into account the different chemical composition of water in the water supply sources, the convenience of transportation and installation of experimental equipment at the work site, an experimental installation UL-2 was created. The installation allows you to simulate the processes of ozonation and filtration of water. Based on the results of the tests carried out, the effectiveness of the ozonation method is determined, as well as recommendations for the hardware implementation of the water ozonation process and an assessment of its technical and economic indicators are formulated.