Trihalomethanes (THMs) are formed due to chlorination of water containing organic compounds. They have mutagenous and carcinogenic properties. The main representative of this effluent group is chloroform. The objectives of this paper are to determine the removal effectiveness of chloroform from natural water with the application of reverse osmosis, nanofiltration and ultrafiltration as well as modelling the flux of using a mathematical model based on resistance determination law and filtration model in constant pressure conditions (J. Hermia's model). The investigation carried out demonstrated the possibility of applying these processes for the removal of chloroform from water. The comparison of volumetric fluxes - the model flux and the experimental one, confirmed good congruence of the model calculations with the results of investigation studies.
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